linux-pcp.c File Reference

Include dependency graph for linux-pcp.c:

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Data Structures
union	uPointer_t
union	convert_64_t
struct	_pcp_register_t
struct	_pcp_event_info_t
struct	_pcp_reg_alloc_t
struct	_pcp_control_state_t
struct	_pcp_context_t
struct	_pcp_hash_t
struct	_pcp_domain_cache_t

Macros
#define	FUNC   __func__ /* force it. */
#define	AGENT_NAME   "perfevent" /* Power9 PCP. */
#define	PM_OPTFLAG_EXIT   (1<<5)
#define	PM_CONTEXT_UNDEF   -1
#define	PM_CONTEXT_HOST   1
#define	PM_CONTEXT_ARCHIVE   2
#define	PM_CONTEXT_LOCAL   3
#define	HANDLE_STRING_ERROR   {fprintf(stderr,"%s:%i unexpected string function error.\n",__FILE__,__LINE__); exit(-1);}
#define	HASH_SIZE   512 /* very roughly in the range of total events. full Saturn test, had ~ 11,000 events.*/
#define	COUNT_ROUTINES   1 /* Change to zero to stop counting. */
#define	mRtnCnt(funcname)   /* .. make macro do nothing. */
#define	mConvertUsec(timeval_)    (timeval_.tv_sec*1000000+timeval_.tv_usec) /* avoid typos. */
#define	_prog_fprintf   if (0) fprintf /* change to 1 to enable printing of progress debug messages. */
#define	_time_fprintf   if (0) fprintf /* change to 1 to enable printing of performance timings. */
#define	_time_gettimeofday   if (0) gettimeofday /* change to 1 to enable gettimeofday for performance timings. */
#define	STRINGIFY(x)   #x
#define	TOSTRING(x)   STRINGIFY(x)
#define	mGet_DL_FPtr(Name)
#define	hostnameLen   512 /* constant used multiple times. */
#define	LNBLOCK   256 /* Power9 gets IPC errors if read block is too large. */
#define	BlockSize   64 /* constant used multiple times. */

Functions
static char *	cachedGetInDom (pmInDom indom, int inst)
static char *	pcp_pmErrStr (int code)
static int	pcp_pmTraversePMNS (const char *name, void(*func)(const char *))
static void	pcp_pmFreeResult (pmResult *result)
static int	pcp_pmNewContext (int type, const char *name)
static int	pcp_pmDestroyContext (int handle)
static int	pcp_pmFetch (int numpid, pmID *pmidlist, pmResult **result)
static int	pcp_pmLookupDesc (pmID pmid, pmDesc *desc)
static int	pcp_pmGetInDom (pmInDom indom, int **instlist, char ***namelist)
static int	pcp_pmLookupText (pmID pmid, int level, char **buffer)
static char *	pcp_pmUnitsStr_r (const pmUnits *pu, char *buf, int buflen)
static unsigned int	stringHash (char *str, unsigned int tableSize)
static unsigned int	addNameHash (char *key, int idx)
static void	freeNameHash (void)
static int	findNameHash (char *key)
static int	_local_linkDynamicLibraries (void)
static int	qsPMID (const void *arg1, const void *arg2)
static void	cbPopulateNameOnly (const char *name)
static void	makeQualifiedEvent (int baseEvent, int idx, char *qualifier)
static void	getPMDesc (int pcpIdx)
static unsigned long long	getULLValue (pmValueSet *vset, int value_index)
static void	subZero (_pcp_control_state_t *myCtl, int event)
static int	getHelpText (unsigned int pcpIdx, char **helpText)
static int	_pcp_init_component (int cidx)
static int	_pcp_init_thread (hwd_context_t *ctx)
static int	_pcp_init_control_state (hwd_control_state_t *ctl)
static int	_pcp_update_control_state (hwd_control_state_t *ctl, NativeInfo_t *native, int count, hwd_context_t *ctx)
static int	PCP_ReadList (hwd_control_state_t *ctl, pmResult **results)
static int	_pcp_reset (hwd_context_t *ctx, hwd_control_state_t *ctl)
static int	_pcp_start (hwd_context_t *ctx, hwd_control_state_t *ctl)
static int	_pcp_read (hwd_context_t *ctx, hwd_control_state_t *ctl, long long **events, int flags)
static int	_pcp_stop (hwd_context_t *ctx, hwd_control_state_t *ctl)
static int	_pcp_shutdown_thread (hwd_context_t *ctx)
static int	_pcp_shutdown_component (void)
static int	_pcp_ctl (hwd_context_t *ctx, int code, _papi_int_option_t *option)
static int	_pcp_set_domain (hwd_control_state_t *ctl, int domain)
static int	_pcp_ntv_enum_events (unsigned int *EventCode, int modifier)
static int	_pcp_ntv_name_to_code (const char *name, unsigned int *event_code)
static int	_pcp_ntv_code_to_name (unsigned int pcpIdx, char *name, int len)
static int	_pcp_ntv_code_to_descr (unsigned int pcpIdx, char *descr, int len)
static int	_pcp_ntv_code_to_info (unsigned int pcpIdx, PAPI_event_info_t *info)

Variables
papi_vector_t	_pcp_vector
int	_papi_hwi_debug = DEBUG_SUBSTRATE
static int	sEventInfoSize =0
static int	sEventInfoBlock = ((8*1024) / sizeof(_pcp_event_info_t))
static _pcp_event_info_t *	pcp_event_info = NULL
static int	sEventCount = 0
static int	ctxHandle = -1
static _pcp_hash_t	sNameHash [HASH_SIZE]
static struct timeval t1	t2
static void *	dl1 = NULL
static char	pcp_main [] =PAPI_PCP_MAIN
void(*	_dl_non_dynamic_init )(void)

Macro Definition Documentation

_prog_fprintf

#define _prog_fprintf   if (0) fprintf /* change to 1 to enable printing of progress debug messages. */

Definition at line 242 of file linux-pcp.c.

_time_fprintf

#define _time_fprintf   if (0) fprintf /* change to 1 to enable printing of performance timings. */

Definition at line 243 of file linux-pcp.c.

_time_gettimeofday

#define _time_gettimeofday   if (0) gettimeofday /* change to 1 to enable gettimeofday for performance timings. */

Definition at line 244 of file linux-pcp.c.

AGENT_NAME

#define AGENT_NAME   "perfevent" /* Power9 PCP. */

Definition at line 42 of file linux-pcp.c.

BlockSize

#define BlockSize   64 /* constant used multiple times. */

COUNT_ROUTINES

#define COUNT_ROUTINES   1 /* Change to zero to stop counting. */

Definition at line 197 of file linux-pcp.c.

FUNC

#define FUNC   __func__ /* force it. */

Definition at line 36 of file linux-pcp.c.

HANDLE_STRING_ERROR

#define HANDLE_STRING_ERROR   {fprintf(stderr,"%s:%i unexpected string function error.\n",__FILE__,__LINE__); exit(-1);}

Definition at line 65 of file linux-pcp.c.

HASH_SIZE

#define HASH_SIZE   512 /* very roughly in the range of total events. full Saturn test, had ~ 11,000 events.*/

Definition at line 194 of file linux-pcp.c.

hostnameLen

#define hostnameLen   512 /* constant used multiple times. */

LNBLOCK

#define LNBLOCK   256 /* Power9 gets IPC errors if read block is too large. */

mConvertUsec

#define mConvertUsec

(

timeval_

)

(timeval_.tv_sec*1000000+timeval_.tv_usec) /* avoid typos. */

Definition at line 239 of file linux-pcp.c.

mGet_DL_FPtr

#define mGet_DL_FPtr

(

Name

)

Value:

   Name##_ptr = dlsym(dl1, TOSTRING(Name));                                \
   if (dlerror() != NULL) {  /* If we had an error, */                     \
      int strErr=snprintf(_pcp_vector.cmp_info.disabled_reason, PAPI_HUGE_STR_LEN,     \
         "PCP library function %s not found in lib.", TOSTRING(Name));     \
      _pcp_vector.cmp_info.disabled_reason[PAPI_HUGE_STR_LEN-1]=0;          \
      if (strErr > PAPI_HUGE_STR_LEN) HANDLE_STRING_ERROR;                  \
      return(PAPI_ENOSUPP);                                                \
   } /* end of macro. */

Definition at line 409 of file linux-pcp.c.

mRtnCnt

#define mRtnCnt

(

funcname

)

/* .. make macro do nothing. */

Definition at line 227 of file linux-pcp.c.

PM_CONTEXT_ARCHIVE

#define PM_CONTEXT_ARCHIVE   2

Definition at line 59 of file linux-pcp.c.

PM_CONTEXT_HOST

#define PM_CONTEXT_HOST   1

Definition at line 58 of file linux-pcp.c.

PM_CONTEXT_LOCAL

#define PM_CONTEXT_LOCAL   3

Definition at line 60 of file linux-pcp.c.

PM_CONTEXT_UNDEF

#define PM_CONTEXT_UNDEF   -1

Definition at line 57 of file linux-pcp.c.

PM_OPTFLAG_EXIT

#define PM_OPTFLAG_EXIT   (1<<5)

Definition at line 56 of file linux-pcp.c.

STRINGIFY

#define STRINGIFY

(

x

)

#x

Definition at line 407 of file linux-pcp.c.

TOSTRING

#define TOSTRING

(

x

)

STRINGIFY(x)

Definition at line 408 of file linux-pcp.c.

Function Documentation

_local_linkDynamicLibraries()

static int _local_linkDynamicLibraries ( void  )

static

Definition at line 419 of file linux-pcp.c.

{
   if ( _dl_non_dynamic_init != NULL ) {  // If weak var present, statically linked insted of dynamic.
       char *strCpy=strncpy( _pcp_vector.cmp_info.disabled_reason, "The pcp component REQUIRES dynamic linking capabilities.", PAPI_HUGE_STR_LEN);
       _pcp_vector.cmp_info.disabled_reason[PAPI_HUGE_STR_LEN-1]=0;
       if (strCpy == NULL) HANDLE_STRING_ERROR;
       return PAPI_ENOSUPP;               // EXIT not supported.
   }
 
   char path_name[1024];
   char *pcp_root = getenv("PAPI_PCP_ROOT"); 
   
   dl1 = NULL;
   // Step 1: Process override if given.   
   if (strlen(pcp_main) > 0) {                                  // If override given, it has to work.
      dl1 = dlopen(pcp_main, RTLD_NOW | RTLD_GLOBAL);           // Try to open that path.
      if (dl1 == NULL) {
         int strErr=snprintf(_pcp_vector.cmp_info.disabled_reason, PAPI_HUGE_STR_LEN, "PAPI_PCP_MAIN override '%s' given in Rules.pcp not found.", pcp_main);
         _pcp_vector.cmp_info.disabled_reason[PAPI_HUGE_STR_LEN-1]=0;
         if (strErr > PAPI_HUGE_STR_LEN) HANDLE_STRING_ERROR;
         return(PAPI_ENOSUPP);   // Override given but not found.
      }
   }
 
   // Step 2: Try system paths, will work with Spack, LD_LIBRARY_PATH, default paths.
   if (dl1 == NULL) {                                           // No override,
      dl1 = dlopen("libpcp.so", RTLD_NOW | RTLD_GLOBAL);        // Try system paths.
   }
 
   // Step 3: Try the explicit install default. 
   if (dl1 == NULL && pcp_root != NULL) {                          // if root given, try it.
      int strErr=snprintf(path_name, 1024, "%s/lib64/libpcp.so", pcp_root);   // PAPI Root check.
      path_name[1024-1]=0;
      if (strErr > PAPI_MAX_STR_LEN) HANDLE_STRING_ERROR;
      dl1 = dlopen(path_name, RTLD_NOW | RTLD_GLOBAL);             // Try to open that path.
   }
 
   // Check for failure.
   if (dl1 == NULL) {
      int strErr=snprintf(_pcp_vector.cmp_info.disabled_reason, PAPI_HUGE_STR_LEN, "libpcp.so not found.");
      _pcp_vector.cmp_info.disabled_reason[PAPI_HUGE_STR_LEN-1]=0;
      if (strErr > PAPI_HUGE_STR_LEN) HANDLE_STRING_ERROR;
      return(PAPI_ENOSUPP);
   }
 
   // We have dl1. 
 
//-----------------------------------------------------------------------------
// Collect pointers for routines in shared library.  All below will abort this
// routine with PAPI_ENOSUPP, if the routine is not found in the dynamic
// library.
//-----------------------------------------------------------------------------
 
   mGet_DL_FPtr(pmLookupName);
   mGet_DL_FPtr(pmErrStr);
   mGet_DL_FPtr(pmTraversePMNS);
   mGet_DL_FPtr(pmFreeResult);
   mGet_DL_FPtr(pmNewContext);
   mGet_DL_FPtr(pmDestroyContext);
   mGet_DL_FPtr(pmFetch);
   mGet_DL_FPtr(pmLookupDesc);
   mGet_DL_FPtr(pmGetInDom);
   mGet_DL_FPtr(pmLookupText);
   mGet_DL_FPtr(pmUnitsStr_r);
   return PAPI_OK;   // If we get here, all above succeeded. 
} // end routine.

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_pcp_ctl()

static int _pcp_ctl ( hwd_context_t *  ctx, int  code, _papi_int_option_t *  option  )

static

Definition at line 1631 of file linux-pcp.c.

{
   mRtnCnt(_pcp_ctl);                                                   // count this function.
   ( void ) ctx;                                                        // avoid var unused warning.
   ( void ) code;                                                       // avoid var unused warning.
   ( void ) option;                                                     // avoid var unused warning.
 
   switch (code) {
      case PAPI_DEFDOM:
         SUBDBG("PAPI_DEFDOM, option.domain=0x%08X\n", (unsigned int) option->domain.domain);
         break;
 
      case PAPI_DOMAIN:
         SUBDBG("PAPI_DOMAIN, option.domain=0x%08X\n", (unsigned int) option->domain.domain);
         break;
 
      case PAPI_DEFGRN:
         SUBDBG("PAPI_DEFGRN, option.granularity=0x%08X\n", (unsigned int) option->granularity.granularity);
         break;
 
      case PAPI_GRANUL:
         SUBDBG("PAPI_GRANUL, option.granularity=0x%08X\n", (unsigned int) option->granularity.granularity);
         break;
 
      case PAPI_INHERIT:
         SUBDBG("PAPI_INHERIT, option.inherit=0x%08X\n", (unsigned int) option->inherit.inherit);
         break;
 
      default:
         fprintf(stderr, "%s:%i:%s CODE 0x%08x IS INVALID "
            "OR UNRECOGNIZED.\n", __FILE__, __LINE__, FUNC, code);
         return PAPI_EINVAL;                                            // Invalid code.
         break;
   } // end switch by code.
 
   return PAPI_OK;                             
} // end routine.

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_pcp_init_component()

static int _pcp_init_component ( int  cidx )

static

Definition at line 856 of file linux-pcp.c.

{
    int retval = PAPI_OK;
   char *reason = _papi_hwd[cidx]->cmp_info.disabled_reason;            // For error messages.
   int rLen = PAPI_HUGE_STR_LEN;                                        // Most I will print.
   reason[rLen-1]=0;                                                    // last resort terminator.
 
   mRtnCnt(_pcp_init_component);                                        // count the routine.
   #define hostnameLen 512 /* constant used multiple times. */
   char hostname[hostnameLen];                                          // host name.
   int  ret;
 
   ret = _local_linkDynamicLibraries();
   if ( ret != PAPI_OK ) {                                              // Failure to get lib.
       retval = PAPI_ESYS;
       goto fn_fail;
   }
 
   ret = gethostname(hostname, hostnameLen);                            // Try to get the host hame.
   if (ret != 0) {                                                      // If we can't get the hostname, 
      int strErr=snprintf(reason, rLen, "Failed system call, gethostname() "
            "returned %i.", ret);   
      reason[rLen-1]=0;
      if (strErr > rLen) HANDLE_STRING_ERROR;
      retval = PAPI_ESYS;
      goto fn_fail;
   }
   #undef hostnameLen /* done with it. */
 
   _prog_fprintf(stderr, "%s:%i retrieved hostname='%s'\n", __FILE__, __LINE__, hostname); // show progress.
 
   ctxHandle = pcp_pmNewContext(PM_CONTEXT_HOST, "local:");             // Set the new context to local host.
   if (ctxHandle < 0) {
      int strErr=snprintf(reason, rLen, "Cannot connect to PM Daemon on \"%s\".\n "
         "(Is the Performance Co-Pilot running?)\n", hostname);
      reason[rLen-1]=0;
      if (strErr > rLen) SUBDBG("%s:%i Warning! Error's 'reason' string truncated:\n%s\n",__FILE__,__LINE__,reason);
      retval = PAPI_ESYS;
      goto fn_fail;
   }
 
   _prog_fprintf(stderr, "%s:%i Found ctxHandle=%i\n", __FILE__, __LINE__, ctxHandle); // show progress.
 
   sEventInfoSize = sEventInfoBlock;                                    // first allocation.   
   pcp_event_info = (_pcp_event_info_t*) 
      calloc(sEventInfoSize, sizeof(_pcp_event_info_t));                // Make room for all events.
   if (pcp_event_info == NULL) {
      int strErr=snprintf(_pcp_vector.cmp_info.disabled_reason, PAPI_HUGE_STR_LEN,
          "Could not allocate %lu bytes of memory for pcp_event_info.", sEventInfoSize*sizeof(_pcp_event_info_t));
      _pcp_vector.cmp_info.disabled_reason[PAPI_HUGE_STR_LEN-1]=0;    // force null termination.
      if (strErr > PAPI_HUGE_STR_LEN) HANDLE_STRING_ERROR;
      retval = PAPI_ENOMEM;
      goto fn_fail;
   }
 
   sEventCount = 0;                                                     // begin at zero.
   _time_gettimeofday(&t1, NULL);
   ret = pcp_pmTraversePMNS(AGENT_NAME, cbPopulateNameOnly);            // Timed on Saturn [Intel Xeon 2.0GHz]; typical 9ms, range 8.5-10.5ms.
   if (ret < 0) {                                                       // Failure...
      int strErr=snprintf(reason, rLen, "pmTraversePMNS failed; ret=%i [%s]\n", 
         ret, pcp_pmErrStr(ret));
      if (ret == PM_ERR_NAME) {                                         // We know what this one is,
         strErr=snprintf(reason, rLen, "pmTraversePMNS ret=PM_ERR_NAME: "
            "Occurs if event filter '%s' unknown to PCP Daemon.\n", AGENT_NAME);
      }
      reason[rLen-1]=0;
      if (strErr >rLen) HANDLE_STRING_ERROR;
      retval = PAPI_ENOIMPL;
      goto fn_fail;
   }      
      
   _time_gettimeofday(&t2, NULL);
   _time_fprintf(stderr, "pmTraversePMNS PopulateNameOnly took %li uS.\n", 
      (mConvertUsec(t2)-mConvertUsec(t1)));
   _time_fprintf(stderr, "Final sEventCount=%i, sEventInfoSize=%i, "
               "sEventInfoBlock=%i.\n", 
      sEventCount, sEventInfoSize, sEventInfoBlock);
  
   if (sEventCount < 1) {                                               // Failure...
      int strErr=snprintf(reason, rLen, "pmTraversePMNS returned zero events "
         "for AGENT=\"%s\".\n", AGENT_NAME);
      reason[rLen-1]=0;
      if (strErr >rLen) HANDLE_STRING_ERROR;
      retval = PAPI_ENOIMPL;
      goto fn_fail;
   }
 
   int i,j,k;
   char **allNames=calloc(sEventCount, sizeof(char*));                  // Make an array for all names. 
   for (i=0; i<sEventCount; i++) {                                      // .. 
      allNames[i] = pcp_event_info[i].name;                             // copy pointer into array. 
   } // end for each event.
 
   pmID *allPMID=calloc(sEventCount, sizeof(pmID));                     // Make an array for results.
   if (allPMID == NULL) {                                               // If we failed,
      snprintf(reason, rLen, "memory alloc denied for allPMID; "
            "size=%i.\n", sEventCount);
      int strErr=snprintf(reason, rLen, "Could not allocate %lu bytes of memory for allPMID.", sEventCount*sizeof(pmID));
      free(allNames);
      if (strErr > rLen) HANDLE_STRING_ERROR;
      retval = PAPI_ENOMEM;
      goto fn_fail;
   } // end if calloc failed.
 
   //----------------------------------------------------------------
   // Unlike Saturn, on the Power9 we get an 'IPC protocol failure' 
   // if we try to read more than 946 names at a time. This is some
   // limitation on a communication packet size. On our test system
   // Power9; the maximum number we can read is 946. To allow leeway
   // for other possible values; we read in blocks of 256.
   //----------------------------------------------------------------
   #define LNBLOCK 256                                                  /* Power9 gets IPC errors if read block is too large. */
   k = (__LINE__)-1;                                                    // where LNBLOCK is defined.   
 
   _time_gettimeofday(&t1, NULL);
 
   i=0;                                                                 // Starting index for allPMID.
   while (i<sEventCount) {                                              // read in blocks of LNBLOCK.
      j = sEventCount-i;                                                // .. presume we can read the rest.
      if (j > LNBLOCK) j=LNBLOCK;                                       // .. reduce if we cannot.
      ret = pcp_pmLookupName(j, allNames+i, allPMID+i);                 // .. Get a block of PMIDs for a block of names.
      if (ret < 0) {                                                    // .. Failure...
         int strErr=snprintf(reason, rLen, "pmLookupName for %i names failed; ret=%i [%s].\n", 
            sEventCount, ret, pcp_pmErrStr(ret));
         reason[rLen-1]=0;
         if (strErr > rLen) HANDLE_STRING_ERROR;
 
         if (ret == PM_ERR_IPC) {                                       // .. If we know it, rewrite.
            strErr=snprintf(reason, rLen, "pmLookupName ret=PM_ERR_IPC: one known cause is a readblock too large; reduce LNBLOCK (%s:%i).\n",
                  __FILE__,k);
            reason[rLen-1]=0;
            if (strErr > rLen) HANDLE_STRING_ERROR;
            retval = PAPI_EBUF;
            goto fn_fail;
         }
 
         retval = PAPI_ESYS;
         goto fn_fail;
      }
 
      i+=j;                                                             // .. Adjust the pointer forward by what we read.
   } // end while to read names in chunks, and avoid IPC error. 
   #undef LNBLOCK                                                       /* Discard constant; no further use. */  
 
   _time_gettimeofday(&t2, NULL);
   _time_fprintf(stderr, "pmLookupName for all took %li uS, ret=%i.\n", 
      (mConvertUsec(t2)-mConvertUsec(t1)), ret );
 
   for (i=0; i<sEventCount; i++) pcp_event_info[i].pmid = allPMID[i];   // copy all the pmid over to array.
 
   pmResult *allFetch = NULL;                                           // result of pmFetch. 
   _time_gettimeofday(&t1, NULL);
   ret = pcp_pmFetch(sEventCount, allPMID, &allFetch);                  // Fetch (read) all the events.
   _time_gettimeofday(&t2, NULL);
   if (ret != 0) {
      int strErr=snprintf(reason, rLen, "pcp_pmFetch failed, retcode=%d.", ret);
      reason[rLen-1]=0;
      if (strErr > rLen) HANDLE_STRING_ERROR;
      retval = PAPI_ENOSUPP;
      goto fn_fail;
   }
 
   _time_fprintf(stderr, "pmFetch for all took %li uS, for %i events; ret=%i.\n", 
      (mConvertUsec(t2)-mConvertUsec(t1)), sEventCount, ret);
 
   //-------------------------------------------------------------------
   // In processing fetches, if we find a multi-valued event, we need
   // to force an event for every value (PAPI only returns 1 value per
   // event; not an array). In experiments thus far, all multi-valued
   // events have had domain descriptor names; so we just concat with
   // the name and make a new Event. We use a helper for that,
   // afterward we set the number of values in the original 'base name'
   // to zero; so it will be deleted by the cleanup routine.                                        
   //-------------------------------------------------------------------
 
   _time_gettimeofday(&t1, NULL);                                       // time this index explosion.
   int origEventCount = sEventCount;                                    // sEventCount may change in below routine.
 
   for (i=0; i<origEventCount; i++) {                                   // process all the fetch results.
      pcp_event_info[i].desc.pmid = PM_ID_NULL;                         // This indicates the description is NOT loaded yet.
      pmValueSet *vset = allFetch->vset[i];                             // get the result for event[i].
 
      // On Saturn test system, never saw this happen.
      if (vset == NULL) {                                               // .. should not happen. leave numVal=0 for deletion.
         fprintf(stderr, "%s:%i vset=NULL for name='%s'\n", 
            __FILE__, __LINE__, pcp_event_info[i].name);
         continue;                                                      // .. next in loop.
      }
     
      pcp_event_info[i].numVal = vset->numval;                          // Show we have a value.
      if (vset->numval == 0) {                                          // If the value is zero, 
//       _prog_fprintf(stderr, "%s:%i Discarding, no values for event  '%s'.\n", __FILE__, __LINE__, pcp_event_info[i].name);
         continue;                                  // If no values, leave numVal = 0 for deletion. (We do see this in tests). 
      }
 
      pcp_event_info[i].valfmt = vset->valfmt;                          // Get the value format. (INSITU or not).
      getPMDesc(i);                                                     // Get the value descriptor.
      unsigned long long ullval= (long long) -1;   // debug stuff.
      convert_64_t convert;
 
      if (vset->valfmt != PM_VAL_INSITU) {                              // If not in situ, must get the type.
         pmValue *pmval = &vset->vlist[0];                              // .. Get the first value.
         pmValueBlock *pB = pmval->value.pval;                          // .. get it.
         if (pcp_event_info[i].valType != pB->vtype) {
            int strErr=snprintf(reason, rLen, "Unexpected value type fetched for %s. %i vs %i. Possible version incompatibiity.\n", 
               pcp_event_info[i].name, pcp_event_info[i].valType, pB->vtype);
            reason[rLen-1]=0;
            if( strErr > rLen) HANDLE_STRING_ERROR;
            retval = PAPI_ENOSUPP;
            goto fn_fail;
         }
 
//       pcp_event_info[i].valType = pB->vtype;                         // .. get the type.
         ullval = getULLValue(vset, 0);                                 // .. get the first value.
 
         switch(pB->vtype) {                                            // PCP's variable type; an int flag.
            case  PM_TYPE_32:                                           // 32-bit signed integer
               _prog_fprintf(stderr, "type I32, desc.sem=%i, event '%s'=", pcp_event_info[i].desc.sem, pcp_event_info[i].name); 
               break;
            case  PM_TYPE_U32:                                          // 32-bit unsigned integer
               _prog_fprintf(stderr, "type U32, desc.sem=%i, event '%s'=", pcp_event_info[i].desc.sem, pcp_event_info[i].name); 
               break;
            case  PM_TYPE_FLOAT:                                        // 32-bit floating point
               _prog_fprintf(stderr, "type F32, desc.sem=%i, event '%s'=", pcp_event_info[i].desc.sem, pcp_event_info[i].name); 
               break;                                                   // END CASE.
 
            case  PM_TYPE_64:                                           // 64-bit signed integer
               convert.ull = ullval;
               _prog_fprintf(stderr, "type I64, desc.sem=%i, event '%s'= (ll) %lli =", pcp_event_info[i].desc.sem, pcp_event_info[i].name, convert.ll); 
               break;
            case  PM_TYPE_U64:                                          // 64-bit unsigned integer
               _prog_fprintf(stderr, "type U64, desc.sem=%i, event '%s'= (ull) %llu =", pcp_event_info[i].desc.sem, pcp_event_info[i].name, convert.ull); 
               break;
            case  PM_TYPE_DOUBLE:                                       // 64-bit floating point
               convert.ull = ullval;
               _prog_fprintf(stderr, "type U64, desc.sem=%i, event '%s'= (double) %f =", pcp_event_info[i].desc.sem, pcp_event_info[i].name, convert.d); 
               break;                                                   // END CASE.
 
            // IF YOU want to return string values, this is a place
            // to change; currently all string-valued events are
            // rejected. But, pB->vbuf is the string value. I would
            // copy it into a new pcp_event_info[] field; it would
            // need to be malloc'd here and free'd at component
            // shutdown. Also PAPI would need a new way to accept a
            // char* or void*. 
 
            case  PM_TYPE_STRING:                                       // pB->vbuf is char* to string value.
               _prog_fprintf(stderr, "%s:%i Discarding PM_TYPE_STRING event, desc.sem=%i, event '%s'=", __FILE__, __LINE__, pcp_event_info[i].desc.sem, pcp_event_info[i].name); 
               pcp_event_info[i].numVal = 0;                            // .. .. set numVal = 0 for deletion.
               break;
 
            default:                                                    // If we don't recognize the type,
               _prog_fprintf(stderr, "%s:%i Dsicarding PM_UNKNOWN_TYPE event, desc.sem=%i, event '%s'=", __FILE__, __LINE__, pcp_event_info[i].desc.sem, pcp_event_info[i].name); 
               pcp_event_info[i].numVal = 0;                            // .. set numVal = 0 for deletion.
               break;
         } // end switch.
      } // If not In Situ.
      else {
         _prog_fprintf(stderr, "type IST, desc.sem=%i, event '%s'=", pcp_event_info[i].desc.sem, pcp_event_info[i].name); 
      }
 
      convert.ull = ullval; 
      _prog_fprintf(stderr, "%02X%02X%02X%02X %02X%02X%02X%02X\n", convert.ch[0], convert.ch[1],  convert.ch[2], convert.ch[3],  convert.ch[4], convert.ch[5],  convert.ch[6], convert.ch[7]);
      // Lookup description takes time; so we only do it for
      // multi-valued events here. For other events, we will do it
      // as needed for EventInfo filling.
 
      if (pcp_event_info[i].numVal > 1) {                               // If a domain qualifier is possible;
         getPMDesc(i);                                                  // .. Get the event descriptor.
         _prog_fprintf(stderr, "Event %s has %i values, indom=%i.\n", pcp_event_info[i].name, pcp_event_info[i].numVal, pcp_event_info[i].desc.indom); 
         if (pcp_event_info[i].desc.indom != PM_INDOM_NULL) {           // .. If we have a non-null domain,
            for (j=0; j<vset->numval; j++) {                            // .. for every value present,
               pmValue *pmval = &vset->vlist[j];                        // .. .. get that guy.
 
               char *dname = cachedGetInDom(                            // .. .. read from cached domains (and populate it when needed).
                                 pcp_event_info[i].desc.indom,
                                 pmval->inst);                          // .. .. get the name. Not malloced so don't free dName.
 
               makeQualifiedEvent(i, j, dname);                         // .. .. helper routine; may realloc pcp_event_info[], change sEventCount.
            } // end value list.
            
            pcp_event_info[i].numVal = 0;                               // .. let the base event be discarded.
         } // end if we have a domain.                                  
      } // end if multiple valued.                                      
   } // end for each event.
 
   // Trim the fat! We get rid of everything with numVal == 0.
   // We do that by compaction; moving valid entries to backfill
   // invalid ones.
 
   j=0;                                                                 // first destination.                                                  
   for (i=0; i<sEventCount; i++) {                                      // loop thorugh all old and new.
      if (pcp_event_info[i].numVal > 0) {                               // If we have a valid entry,
         if (i != j) pcp_event_info[j] = pcp_event_info[i];             // move if it isn't already there.
         j++;                                                           // count one moved; new count of valid ones.
      }
   } 
            
   sEventCount = j;                                                     // this is our new count.
   pcp_event_info = realloc(pcp_event_info,                             // release any extra memory. 
                        sEventCount*sizeof(_pcp_event_info_t));         // .. 
   if (pcp_event_info == NULL) {
      int strErr=snprintf(reason, rLen, 
          "Could not reallocate %lu bytes of memory for pcp_event_info.", sEventCount*sizeof(_pcp_event_info_t));
      reason[rLen-1]=0;    // force null termination.
      if (strErr > rLen) HANDLE_STRING_ERROR;    
      retval = PAPI_ENOMEM;
      goto fn_fail;
   } // end if realloc failed.
 
   qsort(pcp_event_info, sEventCount,                                   // sort by PMID, idx, name.
         sizeof(_pcp_event_info_t), qsPMID);                            // ..
 
   _time_gettimeofday(&t2, NULL);                                       // done with index explosion.
   _time_fprintf(stderr, "indexedExplosion for all took %li uS.\n", 
               (mConvertUsec(t2)-mConvertUsec(t1)) );
 
   for (i=0; i<HASH_SIZE; i++) {                                        // init hash table.
      sNameHash[i].idx = -1;                                            // unused entry. 
      sNameHash[i].next = NULL;                                         // ..
   }                                                                  
                                                                   
   unsigned int myHash;                              
   for (i=0; i<sEventCount; i++) {                                    
      myHash = addNameHash(pcp_event_info[i].name, i);                  // Point this hash to this entry.   
   }                                                                  
 
   //-----------------------------------------------------------------------------------------------------------------------
   // *************************************** DEBUG REPORT OF INFORMATION DISCOVERED ***************************************
   //-----------------------------------------------------------------------------------------------------------------------
   // We use -O2, but even in -O0, if(0){...} is completely removed from code. It costs us nothing to leave this code in.
   if (0) {                                                             // change to 1 to enable debug report. 
      unsigned int current, prev=0;                              
      printf("count, hash, name, pmid, value[idx]\n");
      for (i=0; i<sEventCount; i++) {
         myHash = stringHash(pcp_event_info[i].name, HASH_SIZE);        // Get the hash value.
         current = pcp_event_info[i].pmid;
         if (prev > 0 && current != (prev+1) && current != prev)        // print separators.
            printf("----,----,----,----\n");     
         printf("%i, %u, \"%s\", 0x%08X, %i\n", i, myHash,              // quote name, may contain \,/,comma, etc.
                pcp_event_info[i].name, 
                pcp_event_info[i].pmid, 
                pcp_event_info[i].idx);
         prev=current;                                                  // for finding pmid skips.
      } 
 
      // Test hashing.
      int hashErr = 0;
      _time_gettimeofday(&t1, NULL);
      for (i=0; i<sEventCount; i++) {
         int f = findNameHash(pcp_event_info[i].name);                  // Try to find this name. 
         if (f != i) hashErr++;
      }
 
      _time_gettimeofday(&t2, NULL);
      
      _time_fprintf(stderr, "HashLookup avg uS: %3.6f\n", ((double) (mConvertUsec(t2)-mConvertUsec(t1)) )/((double) sEventCount) );
      _time_fprintf(stderr, "Hash Errors: %i of %i.\n", hashErr, sEventCount);
 
   } // END DEBUG REPORT.
   //-----------------------------------------------------------------------------------------------------------------------
   // *************************************** END DEBUG REPORT INFORMATION DISCOVERED **************************************
   //-----------------------------------------------------------------------------------------------------------------------
 
   free(allNames);                                                      // Locals allocations not needed anymore.
   free(allPMID);                                                       // .. the pmIDs we read.
   pcp_pmFreeResult(allFetch);                                          // .. release the results we fetched.
 
//  For PCP, we can read any number of events at once
//  in a single event set. Set vector elements for PAPI.
 
   _pcp_vector.cmp_info.num_native_events = sEventCount;                // Setup our pcp vector.
   _pcp_vector.cmp_info.num_cntrs = sEventCount;                  
   _pcp_vector.cmp_info.num_mpx_cntrs = sEventCount;
   _pcp_vector.cmp_info.CmpIdx = cidx;                                  // export the component ID.
 
  fn_exit:
    _papi_hwd[cidx]->cmp_info.disabled = retval;
    return retval;
  fn_fail:
    goto fn_exit;
} // end routine.

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_pcp_init_control_state()

static int _pcp_init_control_state ( hwd_control_state_t *  ctl )

static

Definition at line 1262 of file linux-pcp.c.

{
   mRtnCnt(_pcp_init_control_state);                                    // count this function.
    _pcp_control_state_t* control = ( _pcp_control_state_t* ) ctl;
   // contents: _pcp_control_state state at this writing: 
   // contents of state: 
   // int numEvents;                                                    // The number of events we have.
   // int maxAllocated;                                                 // the current entries in pcpIndex.
   // int *pcpIndex;                                                    // array of indices into pcp_event_info[].
   // long long *values;                                                // Values read from our PCP events.
 
    memset(control, 0, sizeof(_pcp_control_state_t));                   // zero it.
 
    return PAPI_OK;
} // end routine.

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_pcp_init_thread()

static int _pcp_init_thread ( hwd_context_t *  ctx )

static

Definition at line 1250 of file linux-pcp.c.

{
   mRtnCnt(_pcp_init_thread);                                           // count this function.
   _pcp_context_t* myCtx = (_pcp_context_t*) ctx;                       // recast.
   myCtx->initDone = 1;                                                 // Nothing else to do for init.
   return PAPI_OK;
}  // end routine.

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_pcp_ntv_code_to_descr()

static int _pcp_ntv_code_to_descr ( unsigned int  pcpIdx, char *  descr, int  len  )

static

Definition at line 1794 of file linux-pcp.c.

{
   mRtnCnt(_pcp_ntv_code_to_descr);                                     // count this function.
 
   pcpIdx &= PAPI_NATIVE_AND_MASK;                                      // We might be called with the NATIVE bit set.
   if (pcpIdx >= (unsigned int) sEventCount) {                          // out of range?
      fprintf(stderr, "%s:%i:%s called with out-of-range pcpIdx=%u.\n", 
         __FILE__, __LINE__, FUNC, pcpIdx);
      return PAPI_EINVAL;                                               // exit with error.
   }
 
   if (len < 1)  {                                                      // If length is ridiculous,
      fprintf(stderr, "%s:%i:%s called with out-of-range descr len=%i.\n", 
         __FILE__, __LINE__, FUNC, len);
      return PAPI_EINVAL;                                               // exit with error.
   }
 
   char *helpText = NULL;                                               // pointer to receive the result.
   int ret = getHelpText(pcpIdx, &helpText);                            // get it. 
   if (ret != PAPI_OK) {                                                // If there is any error,
      if (helpText != NULL) free(helpText);                             // .. no memory leak.
      fprintf(stderr, "%s:%i:%s failed getHelpText; it returned %s.\n", 
         __FILE__, __LINE__, FUNC, PAPI_strerror(ret));
      return ret;                                                       // exit with whatever PAPI error routine had.
   }
 
   strncpy(descr, helpText, len);                                       // copy it over.
   descr[len-1] = 0;                                                    // force a z-terminator.
   free(helpText);                                                      // release text alloc by pm routine.
   return PAPI_OK;                                                      // EXIT, all good.
} // end routine.

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_pcp_ntv_code_to_info()

static int _pcp_ntv_code_to_info ( unsigned int  pcpIdx, PAPI_event_info_t *  info  )

static

Definition at line 1847 of file linux-pcp.c.

{
   mRtnCnt(_pcp_ntv_code_to_info);                                      // count this function.
   int len, ret;   
 
   pcpIdx &= PAPI_NATIVE_AND_MASK;                                      // remove any high order bits.
   if (pcpIdx >= (unsigned int) sEventCount) {                          // out of range?
      fprintf(stderr, "%s:%i:%s called with out-of-range pcpIdx=%u.\n", 
         __FILE__, __LINE__, FUNC, pcpIdx);
      return PAPI_EINVAL;                                               // exit with error.
   }
 
   len=sizeof(info->symbol);                                            // get length.
   strncpy(info->symbol, pcp_event_info[pcpIdx].name, len);             // Copy. 
   info->symbol[len-1] = 0;                                             // force z-terminator.
 
   len=sizeof(info->long_descr);                                        // get length.
   ret = _pcp_ntv_code_to_descr(pcpIdx, info->long_descr, len);         // copy to info.
   if (ret != PAPI_OK) return(ret);                                     // return on failure. _pcp_ntv_code_to_descr already printed error.
 
   // Units resides in pmDesc; we need to get it if we don't already
   // have it (multi-valued events got it during init).
 
   getPMDesc(pcpIdx);                                                   // get the description.
 
   char unitStr[64];
   // This routine has been timed over 19600 trials on Saturn;
   // it requires an average of 2 uS. No daemon comm needed.
 
   pcp_pmUnitsStr_r(&pcp_event_info[pcpIdx].desc.units, unitStr, 64);   // Construct the unit string; needs at least 60 char.
   if ( strlen(unitStr) == 0) {
      sprintf(unitStr, "fraction");                                     // Only ever seen for 'dutycycle' events.
 
      // Following is for debug purposes. 
      if (0) {                                                          // Alternatively, show the details of the PCP units descriptor.
         sprintf(unitStr, "[%u, %i, %u, %u, %i, %i, %i]", 
            pcp_event_info[pcpIdx].desc.units.pad,
            pcp_event_info[pcpIdx].desc.units.scaleCount,
            pcp_event_info[pcpIdx].desc.units.scaleTime,
            pcp_event_info[pcpIdx].desc.units.scaleSpace,
            pcp_event_info[pcpIdx].desc.units.dimCount,
            pcp_event_info[pcpIdx].desc.units.dimTime,
            pcp_event_info[pcpIdx].desc.units.dimSpace
         );
      } 
   }
 
   len = sizeof(info->units);                                           // length of destination.
   strncpy( info->units, unitStr, len);                                 // copy it over.
   info->units[len-1] = 0;                                              // ensure a z-terminator.
 
   switch (pcp_event_info[pcpIdx].valType) {                            // Translate this to a papi value.
 
      case  PM_TYPE_32:                                                 // 32 bit was converted to long long.
      case  PM_TYPE_64:                                                 // long long.
         info->data_type = PAPI_DATATYPE_INT64;                         // What papi needs.
         break;                                                         // END CASE.
 
      case  PM_TYPE_U32:                                                // 32-bit was converted to 64 bit.
      case  PM_TYPE_U64:                                                // 64-bit unsigned integer
      case  PM_TYPE_STRING:                                             // array of char pointer.
         info->data_type = PAPI_DATATYPE_UINT64;                        // What papi needs.
         break;                                                         // END CASE.
 
      case  PM_TYPE_FLOAT:                                              // 32-bit was converted to double.
      case  PM_TYPE_DOUBLE:                                             // 64-bit floating point
         info->data_type = PAPI_DATATYPE_FP64;                          // What papi needs.
         break;                                                         // END CASE.
   };
 
   if (pcp_event_info[pcpIdx].desc.sem == PM_SEM_COUNTER) {             // If we have a counter,
      info->timescope = PAPI_TIMESCOPE_SINCE_START;                     // .. normal stuff.
   } else {                                                             // An instantaneous value. 
      info->timescope = PAPI_TIMESCOPE_POINT;                           // .. What PAPI calls that.
   }
 
   return PAPI_OK;                                                      // exit.
} // end routine.

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_pcp_ntv_code_to_name()

static int _pcp_ntv_code_to_name ( unsigned int  pcpIdx, char *  name, int  len  )

static

Definition at line 1765 of file linux-pcp.c.

{
   mRtnCnt(_pcp_ntv_code_to_name);                                      // count this function.
 
   pcpIdx &= PAPI_NATIVE_AND_MASK;                                      // We can be called with the NATIVE bit set.
   if (pcpIdx >= (unsigned int) sEventCount) {                          // out of range?
      fprintf(stderr, "%s:%i:%s called with out-of-range pcpIdx=%u.\n", 
         __FILE__, __LINE__, FUNC, pcpIdx);
      return PAPI_EINVAL;                                               // exit with error.
   }
 
   if (len < 1)  {                                                      // If length is ridiculous,
      fprintf(stderr, "%s:%i:%s called with out-of-range descr len=%i.\n", 
         __FILE__, __LINE__, FUNC, len);
      return PAPI_EINVAL;                                               // exit with error.
   }
 
   strncpy(name, pcp_event_info[pcpIdx].name, len);                     // just copy the name.
   name[len-1]=0;                                                       // force z-termination.
 
   return PAPI_OK;
} // end routine.

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_pcp_ntv_enum_events()

static int _pcp_ntv_enum_events ( unsigned int *  EventCode, int  modifier  )

static

Definition at line 1698 of file linux-pcp.c.

{
   mRtnCnt(_pcp_ntv_enum_events);                                       // count this function.
   int idx;
 
   switch (modifier) {                                                  // modifier is type of enum operation desired.
       case PAPI_ENUM_FIRST:                                            // Returns event code of first event created.
           EventCode[0] = 0;                                            // Return 0 as event code after a start.
           return PAPI_OK;                                              // EXIT.
           break;                                                       // END CASE.
                                                                        
       // return EventCode of next available event.                     
       case PAPI_ENUM_EVENTS:                                           // enum base events (which is all events).
           idx = EventCode[0] & PAPI_NATIVE_AND_MASK;                   // Take off any hi order flag bits.
           if ((++idx) >= sEventCount) return PAPI_ENOEVNT;             // If we reach an invalid idx for pcp_event_info[], exit. Does nothing to EventCode.
           EventCode[0] = idx | PAPI_NATIVE_MASK;                       // If index was valid, we return it.
           return PAPI_OK;                                              // And exit.
           break;                                                       // END CASE.
                                                                        
       case PAPI_NTV_ENUM_UMASKS:                                       // Note we HAVE no qualifiers or masks.
           return PAPI_ENOEVNT;                                         // There are no qualifiers to list.
                                                                        
       default:                                                         // If we don't understand the modifier,
           return PAPI_ENOEVNT;                                         // .. Presets or other stuff, just say we have none.
           break;                                                       // END CASE.
   } // end switch(modifier).                                           
                                                                        
   return PAPI_EBUG;                                                    // Dummy return; should have exited from inside switch.
} // end routine.

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_pcp_ntv_name_to_code()

static int _pcp_ntv_name_to_code ( const char *  name, unsigned int *  event_code  )

static

Definition at line 1732 of file linux-pcp.c.

{
   mRtnCnt(_pcp_ntv_name_to_code);                                      // count this function.
 
   if (name == NULL || strlen(name)<1) {                                // Invalid name argument.
      fprintf(stderr, "%s:%i:%s Invalid name.\n",                       // .. report it.
         __FILE__, __LINE__, FUNC);                            
         return PAPI_EINVAL;                                            // .. Invalid argument.
   }
 
   if (event_code == NULL) {                                            // Invalid event_code pointer.
      fprintf(stderr, "%s:%i:%s event_code is not a valid pointer.\n",  // .. report it.
         __FILE__, __LINE__, FUNC);                            
         return PAPI_EINVAL;                                            // .. Invalid argument.
   }
 
   int idx = findNameHash((char*) name);                                // Use our hash to find it.
   if (idx < 0) {                                                       // If we failed, 
      fprintf(stderr, "%s:%i:%s Failed to find name='%s', hash=%i.\n",  // .. report it.
         __FILE__, __LINE__, FUNC, name, 
         stringHash((char*) name, HASH_SIZE));                          // .. 
         return PAPI_EINVAL;                                            // .. Invalid argument.
   }
 
   *event_code = idx;                                                   // return with the index we found.
   return PAPI_OK;
} // end routine.

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_pcp_read()

static int _pcp_read ( hwd_context_t *  ctx, hwd_control_state_t *  ctl, long long **  events, int  flags  )

static

Definition at line 1529 of file linux-pcp.c.

{
   mRtnCnt(_pcp_read);                                                  // count this function.
   (void) ctx;                                                          // avoid unused var warning.
   (void) flags;                                                        // ..
 
   _pcp_control_state_t* myCtl = ( _pcp_control_state_t* ) ctl;         // make a shortcut.
   int i, ret;
   pmResult *allFetch;                                                  // vars to be allocated by call.
   if (events == NULL) {
      fprintf(stderr, "%s:%i:%s 'events' is null.\n", 
         __FILE__, __LINE__, FUNC);                                     // report error.
      return(PAPI_EINVAL);                                              // invalid argument.
   }
 
   ret = PCP_ReadList(ctl, &allFetch);                                  // Read the list of events we were given.
   if (ret != PAPI_OK) {                                                // If that failed, 
      fprintf(stderr, "%s:%i:%s PCP_ReadList failed, return=%s.\n", 
         __FILE__, __LINE__, FUNC, PAPI_strerror(ret));                 // report error.
      return(ret);                                                      // exit with that error.
   }
 
   // We have all the results and values extracted from them.
   // Now subtract zero value from them.
      
   for (i=0; i<myCtl->numEvents; i++) {                                 // for each event, 
      subZero(myCtl, i);                                                // .. subtract zero value in proper type. [TONY DON"T COMMENT OUT, JUST DEBUG]
   } // end loop through all events in this event set.
 
   // Done, point the caller to our results list.
   *events = (long long *) myCtl->pcpValue;                             // pointer the caller needs. 
   pcp_pmFreeResult(allFetch);                                          // Clean up.
   return PAPI_OK;                                                      // exit, all okay.
} // end routine.

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_pcp_reset()

static int _pcp_reset ( hwd_context_t *  ctx, hwd_control_state_t *  ctl  )

static

Definition at line 1469 of file linux-pcp.c.

{
   mRtnCnt(_pcp_reset);                                                 // count this function.
   ( void ) ctx;                                                        // avoid unused var warning.
   int i, k, ret;
   unsigned long long aValue;
 
   pmResult *allFetch;                                                  // vars to be allocated by call.
   _pcp_control_state_t* myCtl = ( _pcp_control_state_t* ) ctl;         // make a shortcut.
 
   ret = PCP_ReadList(ctl, &allFetch);                                  // Read the list of events we were given.
   if (ret != PAPI_OK) {                                                // If that failed, 
      fprintf(stderr, "%s:%i:%s PCP_ReadList failed, return=%s.\n", 
         __FILE__, __LINE__, FUNC, PAPI_strerror(ret));                 // report error.
      if (allFetch != NULL) pcp_pmFreeResult(allFetch);                 // free if it was allocated.
      return(ret);                                                      // exit with that error.
   }
 
   // We have all the results; the values read have been extracted
   // and stored the control state.  Now set them as the zeroValue
   // in each pcp_event_info[].
 
   for (i=0; i<myCtl->numEvents; i++) {                                 // for each event, 
      k = myCtl->pcpIndex[i];                                           // .. get pcp_event_info[] index.
      aValue = myCtl->pcpValue[i];                                      // .. get the value for that event.
      pcp_event_info[k].zeroValue = aValue;                             // .. reset the counter. 
   } // end loop through all events in this event set.
 
   // That is all we do; reset the zeroValue to the current value.
   // For efficiency we do not check if it is a counter, instantaneous
   // or discrete value; that is done in subZero.
   pcp_pmFreeResult(allFetch);                                          // .. Clean up.
   return PAPI_OK;
} // end routine. 

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_pcp_set_domain()

static int _pcp_set_domain ( hwd_control_state_t *  ctl, int  domain  )

static

Definition at line 1678 of file linux-pcp.c.

{
   mRtnCnt(_pcp_set_domain);                                            // count this function.
    (void) ctl;                                                         // avoid var unused warning.
    if ( PAPI_DOM_ALL != domain ) return PAPI_EINVAL;                   // Reject if not this one.
    return PAPI_OK;                                                     // Otherwise, OK, nothing to do.
} // end routine.

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_pcp_shutdown_component()

static int _pcp_shutdown_component ( void  )

static

Definition at line 1595 of file linux-pcp.c.

{
   int i;
   mRtnCnt(_pcp_shutdown_component);                                    // count this function.
   pcp_pmDestroyContext(ctxHandle);                                     // context handle; fails to free malloced memory, says valgrind.
   ctxHandle = -1;                                                      // reset to prevent reuse.
   free(pcp_event_info); pcp_event_info=NULL;                           // then pcp_event_info, reset.
   freeNameHash();                                                      // free sNameHash. resets itself.
   cachedGetInDom(PM_INDOM_NULL, -1);                                   // -1 for inst == free its local static mallocs.
   sEventCount = 0;                                                     // clear number of events. 
 
   for (i=0; i<=ctr_pcp_ntv_code_to_info; i++) 
      _prog_fprintf(stderr, "routine counter %i = %i.\n", i, cnt[i]);
 
   return PAPI_OK;
} // end routine.

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_pcp_shutdown_thread()

static int _pcp_shutdown_thread ( hwd_context_t *  ctx )

static

Definition at line 1583 of file linux-pcp.c.

{
   mRtnCnt(_pcp_shutdown_thread);                                       // count this function.
    ( void ) ctx;                                                       // avoid var unused warning.
 
    return PAPI_OK;
} // end routine.

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_pcp_start()

static int _pcp_start ( hwd_context_t *  ctx, hwd_control_state_t *  ctl  )

static

Definition at line 1510 of file linux-pcp.c.

{
   mRtnCnt(_pcp_start);                                                 // count this function.
   _pcp_reset(ctx, ctl);                                                // Just reset counters.
   return PAPI_OK;
} // end routine.

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_pcp_stop()

static int _pcp_stop ( hwd_context_t *  ctx, hwd_control_state_t *  ctl  )

static

Definition at line 1571 of file linux-pcp.c.

{
   mRtnCnt(_pcp_stop);                                                  // count this function.
    (void) ctx;                                                         // avoid var unused warning.
    (void) ctl;                                                         // avoid var unused warning.
    return PAPI_OK;
} // end routine.

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_pcp_update_control_state()

static int _pcp_update_control_state ( hwd_control_state_t *  ctl, NativeInfo_t *  native, int  count, hwd_context_t *  ctx  )

static

Definition at line 1305 of file linux-pcp.c.

{
   mRtnCnt(_pcp_update_control_state);                                  // count this function.
   int i, index = 0;
   ( void ) ctx;
 
   _pcp_control_state_t* MyCtl = ( _pcp_control_state_t* ) ctl;         // Recast ctl.
 
   MyCtl->numEvents = count;                                            // remember how many there are.
   if (count == 0) {                                                    // If we are deleting a set,
      if (MyCtl->pcpIndex != NULL) {                                    // If we have space allocated,
         free(MyCtl->pcpIndex);                                         // .. discard it,
         free(MyCtl->pcpValue);                                         // .. and values.
         MyCtl->pcpIndex = NULL;                                        // .. never free it again.
         MyCtl->pcpValue = NULL;                                        // .. never free it again.
      }
 
      MyCtl->maxAllocated = 0;                                          // .. no longer tracking max.
      return PAPI_OK;                                                   // .. get out.
   }
 
   // henceforth, count != 0.
   #define BlockSize 64 /* constant used multiple times. */
   int newalloc = ((count/BlockSize)*BlockSize+BlockSize);              // .. pick next up multiple of BlockSize.
   #undef  BlockSize    /*prevent bugs if same name used elsewhere.*/
 
   if (MyCtl->pcpIndex != NULL) {                                       // If I have a previous list of variables,
      if (count > MyCtl->maxAllocated) {                                // .. If I will need more room,
         MyCtl->pcpIndex = realloc(MyCtl->pcpIndex,                     // .. .. reallocate to make more room.
                                   newalloc*sizeof(int));               // .. .. ..
         MyCtl->pcpValue = realloc(MyCtl->pcpValue,                     // .. .. reallocate to make more room.
                                   newalloc*sizeof(unsigned long long));// .. .. ..
         MyCtl->maxAllocated = newalloc;                                // .. .. remember what we've got.
      }
   } else {                                                             // If NULL then I have no previous set,
      MyCtl->maxAllocated = newalloc;                                   // .. pick next up multiple of BlockSize.
      MyCtl->pcpIndex =                                                 // .. make room for 'count' indices,
         calloc(MyCtl->maxAllocated, sizeof(int));                      // .. 
      MyCtl->pcpValue =                                                 // .. make room for 'count' values.
         calloc(MyCtl->maxAllocated, sizeof(unsigned long long));       // .. 
   }
 
   if (MyCtl->pcpIndex == NULL) {                                       // If malloc failed,
      return PAPI_ENOMEM;                                               // .. out of memory.
   } // end if malloc failed.
 
   //------------------------------------------------------------------
   // pcpIndex alloc managed, now process all events passed in.
   // pcpIndex[i] holds the event pcp_event_info[] index for 
   // EventSet[i], and we populate the caller's ni_position for 
   // EventSet[i] with the index into pcpIndex[].
   //------------------------------------------------------------------
 
   for (i=0; i<count; i++) {                                            // for each event passed in,
      index = native[i].ni_event & PAPI_NATIVE_AND_MASK;                // get index.
      if (index < 0 || index >= sEventCount) {                          // if something is wrong, 
         return PAPI_ENOEVNT;                                           // no such event.
      } // end if index invalid.
 
      MyCtl->pcpIndex[i]=index;                                         // remember the index.
      MyCtl->pcpValue[i]=0;                                             // clear the value.   
      native[i].ni_position = i;                                        // Tell PAPI about its location (doesn't matter to us), we have no restrictions on position.
      getPMDesc(index);                                                 // Any time an event is added, ensure we have its variable descriptor.
   } // end for each event listed.
 
   return PAPI_OK;
} // end routine.

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addNameHash()

static unsigned int addNameHash ( char *  key, int  idx  )

static

Definition at line 336 of file linux-pcp.c.

{
   unsigned int slot = stringHash(key, HASH_SIZE);       // compute hash code.
   if (sNameHash[slot].idx < 0) {                        // If not occupied,
      sNameHash[slot].idx = idx;                         // ..Now it is.
      return(slot);                                      // and we are done.
   }
 
   // slot was occupied (collision).
   _pcp_hash_t *newGuy = calloc(1, sizeof(_pcp_hash_t));                // make a new entry.
   newGuy->idx = sNameHash[slot].idx;                                   // copy the idx sitting in table.
   newGuy->next = sNameHash[slot].next;                                 // copy the chain pointer.
   sNameHash[slot].idx = idx;                                           // this one goes into table.
   sNameHash[slot].next = (void*) newGuy;                               // and chains to that new guy.
   return(slot);                                                        // and we are done.
} // end routine.

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cachedGetInDom()

static char * cachedGetInDom ( pmInDom  indom, int  inst  )

static

Definition at line 612 of file linux-pcp.c.

{
   static int domains=0;                                                // None cached to begin.
   static _pcp_domain_cache_t* cachedDomains = NULL;                    // Empty pointer.
   int i, domIdx;
 
   if (inst == -1) {                                                    // If we are shutting down,
      if (cachedDomains == NULL) return(NULL);                          // exit if we never built an array.
      for (i=0; i<domains; i++) {                                       // for every one cached,
         free(cachedDomains[i].instances);                              // .. free malloced memory.
         free(cachedDomains[i].names);                                  // .. free malloced memory.
      }
      
      free(cachedDomains);                                              // discard our table.
      domains = 0;                                                      // reset.
      cachedDomains = NULL;                                             // never free twice.
      return(NULL);                                                     // exit.
   } // end if shutting down.
 
   // Check if we have it already.
   for (i=0; i<domains; i++) {
      if (indom == cachedDomains[i].domainId) break;                    // Exit loop if found.
   } 
 
   domIdx = i;                                                          // The domain index.
   if (i == domains) {                                                  // If not found; make a new one and read it.
      domains++;                                                        // .. add one to count.
 
      if (domains == 1) {                                               // for first domain,
         cachedDomains = malloc(sizeof(_pcp_domain_cache_t));           // ..malloc.
      } else {                                                          // for subsequent domains,
         cachedDomains = realloc(cachedDomains, 
                        domains*sizeof(_pcp_domain_cache_t));           // realloc, retain first.
      }
 
      if (cachedDomains == NULL) {                                      // If we failed malloc/realloc, 
         fprintf(stderr, "%s:%i:%s malloc/realloc denied for "
                 "cachedDomains; size=%i.\n", 
                 __FILE__, __LINE__, __func__, domains);
         exit(-1);
      } // end if realloc failed.
         
      cachedDomains[domIdx].domainId = indom;                           // .. The domain we are getting.
      cachedDomains[domIdx].numInstances = pcp_pmGetInDom(indom, 
         &cachedDomains[domIdx].instances,                              // .. store pointer lists in struct too.
         &cachedDomains[domIdx].names);                                 // .. 
      for (i=0; i<cachedDomains[domIdx].numInstances; i++) {            // DEBUG, vet the strings.
         if (cachedDomains[domIdx].names[i] == NULL || 
             strlen(cachedDomains[domIdx].names[i]) == 0 || 
             strlen(cachedDomains[domIdx].names[i]) >= PAPI_MAX_STR_LEN) {
            fprintf(stderr, "%s:%i:%s ERROR: cachedGetInDom: domain=%u, domIdx=%i, name idx %i invalid string.\n",
               __FILE__, __LINE__, FUNC, indom, domIdx, i);
            exit(-1);
         } // end if domain string is nonsense.
      }           
   } // end if we need to cache a new domain.
      
   // We got the domain index, Now we can try to look up the 
   // instance name.
 
   for (i=0; i < cachedDomains[domIdx].numInstances; i++) {             // look through all instances. 
      if (cachedDomains[domIdx].instances[i] == inst)                   // .. If found,
        return cachedDomains[domIdx].names[i];                          // .. .. return matching name.
   } // end search for inst.
 
   fprintf(stderr, "%s:%i:%s ERROR: cachedGetInDom: domain=%u, domIdx=%i, numInstances=%i, failed to find inst=%i.\n",
      __FILE__, __LINE__, FUNC, indom, domIdx, cachedDomains[domIdx].numInstances, inst);
   exit(-1);                                                            // Cannot continue; should not have happened.
 
   return NULL;                                                         // Code cannot be reached. Couldn't find it.
} // end routine.

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cbPopulateNameOnly()

static void cbPopulateNameOnly ( const char *  name )

static

Definition at line 511 of file linux-pcp.c.

{
   if (sEventCount >= sEventInfoSize) {                                 // If we must realloc, 
      sEventInfoSize += sEventInfoBlock;                                // .. Add another page.
      pcp_event_info = realloc(pcp_event_info,                          // .. do realloc.
                        sEventInfoSize*sizeof(_pcp_event_info_t));      // ..
      memset(&pcp_event_info[sEventCount], 0,                           // .. clear to zeros.
             sEventInfoBlock*sizeof(_pcp_event_info_t));                // .. 
   }
 
   strncpy(pcp_event_info[sEventCount].name, name, PAPI_MAX_STR_LEN-1); // copy name.
   sEventCount++;                                                       // increment our count of events.
} // end routine.

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findNameHash()

static int findNameHash ( char *  key )

static

Definition at line 377 of file linux-pcp.c.

{
   int idx;
   unsigned int slot = stringHash(key, HASH_SIZE);                      // compute hash code.
   idx = sNameHash[slot].idx;                                           // get the index.
   if (idx < 0) return(-1);                                             // No good slot for it.
   if (strcmp(key, pcp_event_info[idx].name) == 0) {                    // If we found it straight away,
      return(idx);                                                      // .. quick return.
   }
 
   _pcp_hash_t *next = (_pcp_hash_t*) sNameHash[slot].next;             // get the next guy.
 
   while (next != NULL) {                                               // follow the chain.
      idx = next->idx;                                                  // .. get the idx.
      if (strcmp(key, pcp_event_info[idx].name) == 0) {                 // If we found a match,
         return(idx);                                                   // .. return with answer.
      }
      
      next = next->next;                                                // get the next guy in the link.
   } // end chain follow for collisions.
 
   return(-1);                                                          // did not find it.
} // end routine.

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freeNameHash()

static void freeNameHash ( void  )

static

Definition at line 358 of file linux-pcp.c.

{
   int i;
   for (i=0; i<HASH_SIZE; i++) {                                         // loop through table.
      void *next = sNameHash[i].next;                                    // Get any pointer.
      while (next != NULL) {                                             // follow the chain.
         void *tofree = next;                                            // remember what we have to free.
         next = ((_pcp_hash_t*) next)->next;                             // follow the chain.
         free(tofree);                                                   // free the one we are standing on.
      } 
   }
} // end routine.

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getHelpText()

static int getHelpText ( unsigned int  pcpIdx, char **  helpText  )

static

Definition at line 815 of file linux-pcp.c.

{
   char    *p;
   int     ret;
   char    errMsg[]="Help Text is not available for this event.";       // for an error we have seen.
 
   pmID myPMID = pcp_event_info[pcpIdx].pmid;                           // collect the pmid.
   ret = pcp_pmLookupText(myPMID, PM_TEXT_HELP, helpText);              // collect a line of text, routine mallocs helpText.
   if (ret != 0) {                                                      // If larger help is not available, Try oneline.
      if (*helpText != NULL) free(*helpText);                           // .. Free anything allocated. 
      *helpText = NULL;                                                 // .. start it as null.
      ret = pcp_pmLookupText(myPMID, PM_TEXT_ONELINE, helpText);        // .. collect a line of text, routine mallocs helpText.
   } 
 
   if (ret == PM_ERR_TEXT) {                                            // If not available, 
      *helpText = strdup(errMsg);                                       // duplicate this error message.
   } else if (ret != 0) {                                               // If PCP has any other error, report and exit.
      fprintf(stderr, "%s:%i:%s pmLookupText failed; return=%s.\n", 
         __FILE__, __LINE__, FUNC, pcp_pmErrStr(ret));
      return PAPI_EATTR;                                                // .. invalid or missing event attribute.
   }
 
   // Replace all /n with '|'.
   for (p=(*helpText); p[0] != 0; p++) {                                // loop through string routine allocated,
      if (p[0] == '\n') p[0] = '|';                                     // .. If we found a \n, replace with '|'.
   } // end scan for \n.
 
   return PAPI_OK;                                                      // Presumably all went well.    
} // end routine.

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getPMDesc()

static void getPMDesc ( int  pcpIdx )

static

Definition at line 576 of file linux-pcp.c.

                                  {                                     // Reads the variable descriptor.
   int ret;
   if (pcp_event_info[pcpIdx].pmid == PM_ID_NULL) return;               // Already have it.
   ret = pcp_pmLookupDesc(pcp_event_info[pcpIdx].pmid,                  // Get the event descriptor.
         &pcp_event_info[pcpIdx].desc);                                 // .. into the table; will set desc.pmid to not null.
   if (ret == PM_ERR_PMID) {                                            // If we failed for PMID,
      fprintf(stderr, "%s:%i:%s Invalid PMID.\n",
              __FILE__, __LINE__, __func__); 
      exit(-1);
   } // end if realloc failed.
      
   if (ret == PM_ERR_NOAGENT) {                                         // If we failed for agent,
      fprintf(stderr, "%s:%i:%s PMDA Agent not available to respond..\n",
              __FILE__, __LINE__, __func__); 
      exit(-1);
   } // end if realloc failed.
 
   if (ret != 0) {                                                      // Unknown error, 
      fprintf(stderr, "%s:%i:%s Unknown error code ret=%i.\n",
              __FILE__, __LINE__, __func__, ret); 
      exit(-1);
   } // end if realloc failed.
 
   pcp_event_info[pcpIdx].valType = pcp_event_info[pcpIdx].desc.type;   // Always copy type over.
   return;                                                              // No error. 
} // END code.

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getULLValue()

static unsigned long long getULLValue ( pmValueSet *  vset, int  value_index  )

static

Definition at line 689 of file linux-pcp.c.

{
   unsigned long long value;                                         // our return value.
   convert_64_t convert;                                             // union for conversion.
   uPointer_t myPtr;                                                 // a union helper to avoid warnings.
 
   if (vset->valfmt == PM_VAL_INSITU) {                              // If the value format is in situ; a 32 bit value.
      convert.ll = vset->vlist[value_index].value.lval;              // .. we can just collect the value immediately.
      value = convert.ull;                                           // .. 
   } else {                                                          // If it is either static or dynamic alloc table,
      pmValueBlock *pmvb = vset->vlist[value_index].value.pval;      // .. value given is a pointer to value block.
      myPtr.cPtr = pmvb->vbuf;                                       // .. use cPtr because vbuf defined as char[1] in pmValueBlock.
      switch (pmvb->vtype) {                                         // Note we restricted the types in init; these cases should agree.
         case  PM_TYPE_32:       // 32-bit signed integer
            convert.ll = myPtr.iPtr[0];
            value = convert.ull;
            break;
 
         case  PM_TYPE_U32:      // 32-bit unsigned integer
            value =  myPtr.uiPtr[0];
            break;
 
         case  PM_TYPE_64:       // 64-bit signed integer
            convert.ll = myPtr.llPtr[0];
            value = convert.ull;
            break;
 
         case  PM_TYPE_U64:      // 64-bit unsigned integer
            value = myPtr.ullPtr[0];
            break;
 
         case  PM_TYPE_FLOAT:    // 32-bit floating point
            convert.d = myPtr.fPtr[0];  // convert first.
            value = convert.ull;
            break;
 
         case  PM_TYPE_DOUBLE:   // 64-bit floating point
            convert.d = myPtr.dPtr[0];
            value = convert.ull;
            break;
 
         case  PM_TYPE_STRING:   // array of char 
            convert.vp = myPtr.cPtr;
            value = convert.ull;            
            break;
 
         default:
            fprintf(stderr, "%s:%i pmValueBlock (from PCP) contains an unrecognized value type=%i.\n",
               __FILE__, __LINE__,  pmvb->vtype);
            convert.ll = -1;                                            // A flag besides zero
            value = convert.ull;
      } // end switch on type. 
   } // if pmValueBlock value.
 
   return(value);                                                       // exit with result.
} // end routine. 

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makeQualifiedEvent()

static void makeQualifiedEvent ( int  baseEvent, int  idx, char *  qualifier  )

static

Definition at line 532 of file linux-pcp.c.

{
   int prevSize;
   if (sEventCount >= sEventInfoSize) {                                 // If we must realloc, 
      prevSize = sEventInfoSize;
      sEventInfoSize += sEventInfoBlock;                                // .. Add another block.
      pcp_event_info = realloc(pcp_event_info,                          // .. attempt reallocation.
                       sEventInfoSize*sizeof(_pcp_event_info_t));       // .. ..
      if (pcp_event_info == NULL) {                                     // If realloc failed, report it.
         fprintf(stderr, "%s:%i:%s realloc denied; "
                 "pcp_event_info=%p at size=%i.\n",
                 __FILE__, __LINE__, __func__, 
                pcp_event_info, sEventInfoSize);
         exit(-1);
      } // end if realloc failed.
 
      memset(&pcp_event_info[prevSize], 0,                              // .. clear the new block to zeros..
             sEventInfoBlock*sizeof(_pcp_event_info_t));                // .. 
   } // end if realloc needed.
 
   pcp_event_info[sEventCount] = pcp_event_info[baseEvent];             // copy the structure.
   pcp_event_info[sEventCount].numVal = 1;                              // Just one value.
   pcp_event_info[sEventCount].idx = idx;                               // Set the right index.
   pcp_event_info[sEventCount].zeroValue = 0;                           // Set the base value.  
   int slen = strlen(pcp_event_info[sEventCount].name);                 // get length of user name.
   char *c = qualifier;                                                 // point at qualifier.
   pcp_event_info[sEventCount].name[slen++] = ':';                      // place a colon.
 
   while ( (*c) != 0 && slen < PAPI_MAX_STR_LEN-1) {                    // .. appending qualifier,
      char v=*c++;                                                      // .. what we intend to append, point at next.
      // your chance to invalidate any chars, right here!
      pcp_event_info[sEventCount].name[slen++] = v;                     // .. add to name, inc slen.
   }
   
   pcp_event_info[sEventCount].name[slen] = 0;                          // ensure z-terminator. 
   sEventCount++;                                                       // increment our count of events.
} // end routine.

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pcp_pmDestroyContext()

static int pcp_pmDestroyContext ( int  handle )

static

Definition at line 293 of file linux-pcp.c.

                  { return ((*pmDestroyContext_ptr) (handle));}

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pcp_pmErrStr()

static char * pcp_pmErrStr ( int  code )

static

Definition at line 281 of file linux-pcp.c.

                  { return ((*pmErrStr_ptr) (code)); }

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pcp_pmFetch()

static int pcp_pmFetch ( int  numpid, pmID *  pmidlist, pmResult **  result  )

static

Definition at line 296 of file linux-pcp.c.

                  { return ((*pmFetch_ptr) (numpid,pmidlist,result)); }

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pcp_pmFreeResult()

static void pcp_pmFreeResult ( pmResult *  result )

static

Definition at line 287 of file linux-pcp.c.

                  {(*pmFreeResult_ptr) (result); return;}

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pcp_pmGetInDom()

static int pcp_pmGetInDom ( pmInDom  indom, int **  instlist, char ***  namelist  )

static

Definition at line 302 of file linux-pcp.c.

                  { return ((*pmGetInDom_ptr) (indom,instlist,namelist)); }

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pcp_pmLookupDesc()

static int pcp_pmLookupDesc ( pmID  pmid, pmDesc *  desc  )

static

Definition at line 299 of file linux-pcp.c.

                  { return ((*pmLookupDesc_ptr) (pmid,desc)); }

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pcp_pmLookupText()

static int pcp_pmLookupText ( pmID  pmid, int  level, char **  buffer  )

static

Definition at line 305 of file linux-pcp.c.

                  { return ((*pmLookupText_ptr) (pmid, level, buffer)); }

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pcp_pmNewContext()

static int pcp_pmNewContext ( int  type, const char *  name  )

static

Definition at line 290 of file linux-pcp.c.

                  { return ((*pmNewContext_ptr) (type,name)); }

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pcp_pmTraversePMNS()

static int pcp_pmTraversePMNS ( const char *  name, void(*)(const char *)  func  )

static

Definition at line 284 of file linux-pcp.c.

                  { return ((*pmTraversePMNS_ptr) (name, func)); }

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pcp_pmUnitsStr_r()

static char * pcp_pmUnitsStr_r ( const pmUnits *  pu, char *  buf, int  buflen  )

static

Definition at line 308 of file linux-pcp.c.

                  {return ((*pmUnitsStr_r_ptr) (pu, buf, buflen)); }

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PCP_ReadList()

static int PCP_ReadList ( hwd_control_state_t *  ctl, pmResult **  results  )

static

Definition at line 1392 of file linux-pcp.c.

{
   int i, j, ret;
    _pcp_control_state_t* myCtl = ( _pcp_control_state_t* ) ctl;
   *results = NULL;                                                     // Nothing allocated.
   if (myCtl->numEvents < 1) return PAPI_ENOEVNT;                       // No events to start.
   int nPMID = 0;                                                       // To count number of **unique** PMIDs.
 
   pmID *allPMID=malloc((myCtl->numEvents)*sizeof(pmID));               // Make maximum possible room.
 
   // We build a list of all *unique* PMIDs. Because PMID can return
   // an array of N values for a single event (e.g. one per CPU), we
   // 'explode' such events into N events for PAPI, which can only
   // return 1 value per event. Thus PAPI could add several to an
   // EventSet that all have the same PMID (PCP's ID). We only need
   // to read those once, our pcp_event_info[] contains the index
   // for each exploded event into the array returned for that PMID.
 
   allPMID[nPMID++] = pcp_event_info[myCtl->pcpIndex[0]].pmid;          // Move the first, increment total so far. 
 
   for (i=1; i<myCtl->numEvents; i++) {                                 // For every event in the event set,
      int myIdx = myCtl->pcpIndex[i];                                   // .. Get pcp_event_info[] index of the event,
      pmID myPMID = pcp_event_info[myIdx].pmid;                         // .. get the PMID for that event,
      for (j=0; j<nPMID; j++) {                                         // .. Search the unique PMID list for a match. 
         if (myPMID == allPMID[j]) break;                               // .. .. found it. break out.
      } 
 
      if (j == nPMID) {                                                 // full loop ==> myPMID was not found in list,
         allPMID[nPMID++] = myPMID;                                     // .. store the unique pmid in list, inc count.
      }
   }                                                                    // done building list of unique pmid.
   
   // nPMID is # of unique PMID, now ready to read all the pmid needed.
   pmResult *allFetch = NULL;                                           // result of pmFetch. 
   ret = pcp_pmFetch(nPMID, allPMID, &allFetch);                        // Fetch them all.
   *results = allFetch;                                                 // For either success or failure.
   
   if( ret != PAPI_OK) {                                                // If fetch failed .. 
      fprintf(stderr, "%s:%i:%s pcp_pmFetch failed, return=%s.\n", 
         __FILE__, __LINE__, FUNC, PAPI_strerror(ret));                 // .. report error.
         if (allPMID != NULL)  free(allPMID);                           // .. no memory leak.
         allPMID = NULL;                                                // .. prevent future use.
      return(ret);                                                      // .. exit with that error.
   }
 
   // For each unique PMID we just read, we must map it to the event
   // sets, which may contain multiple entries with that same PMID.
   // This is because PCP returns arrays, and PAPI does not, so each
   // of our names translates to a PMID + an index.
 
   for (i=0; i<nPMID; i++) {                                            // process all the fetch results.
      pmValueSet *vset = allFetch->vset[i];                             // get the result for event[i].
      pmID myPMID = allPMID[i];                                         // get the pmid from this read.
       
      // Now we must search for any events with this pmid, and get
      // the corresponding value (may be more than one, since we
      // treat each idx as its own value).         
 
      for (j=0; j<myCtl->numEvents; j++) {                              // for each event,
         int myPCPIdx = myCtl->pcpIndex[j];                             // .. get my pcp_event_info[] index.
         pmID thisPMID = pcp_event_info[myPCPIdx].pmid;                 // .. collect its pmid.
         if (thisPMID == myPMID) {                                      // .. If this result services that event, 
            int myArrayIdx = pcp_event_info[myPCPIdx].idx;              // .. .. get array index within result array, for result value list.
            myCtl->pcpValue[j] = getULLValue(vset, myArrayIdx);         // .. .. translate as needed, put back into pcpValue array.
         } // end if counter was found for this PMID.
      } // end loop through all events in this event set.
   } // end for each pmID read.
 
   if (allPMID != NULL)  free(allPMID);                                 // Done with this work area; no memory leak.
   return PAPI_OK;                                                      // All done.
} // end routine.

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qsPMID()

static int qsPMID ( const void *  arg1, const void *  arg2  )

static

Definition at line 490 of file linux-pcp.c.

{
   _pcp_event_info_t *p1 = (_pcp_event_info_t*) arg1;
   _pcp_event_info_t *p2 = (_pcp_event_info_t*) arg2;
 
   if (p1->pmid < p2->pmid) return (-1);                                // 1 comes before 2.
   if (p1->pmid > p2->pmid) return ( 1);                                // 1 comes after 2.
   if (p1->idx  < p2->idx ) return (-1);                                // same pmid, try idx into vlist.
   if (p1->idx  > p2->idx ) return ( 1);                                // 1 comes after 2. 
   return (strcmp(p1->name, p2->name));                                 // sort by name if same PMID and idx.
} // end routine.

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stringHash()

static unsigned int stringHash ( char *  str, unsigned int  tableSize  )

static

Definition at line 320 of file linux-pcp.c.

{
  unsigned long hash = 5381;                             // seed value.
  int c;
  while ((c = (*str++))) {                               // ends when c == 0.
     hash = ((hash << 5) + hash) + c;                    // hash * 33 + c.
  }
 
  return (hash % tableSize);                             // compute index and exit.
} // end function.

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subZero()

static void subZero ( _pcp_control_state_t *  myCtl, int  event  )

static

Definition at line 763 of file linux-pcp.c.

{
   int k = myCtl->pcpIndex[event];                                      // get pcp_event_info[] index.
   if (pcp_event_info[k].desc.sem != PM_SEM_COUNTER) return;            // Don't subtract from instantaneous values.
 
   convert_64_t zero, rawval;
   rawval.ull = myCtl->pcpValue[event];                                 // collect the raw value.
   zero.ull = pcp_event_info[k].zeroValue;                              // collect the zero (base) value.
   switch (pcp_event_info[k].valType) {                                 // Note we restricted the types in init; these cases should agree.
      case  PM_TYPE_32:                                                 // 32 bit was converted to long long.
      case  PM_TYPE_64:                                                 // long long.
         rawval.ll -= zero.ll;                                          // converted.
         break;
 
      case  PM_TYPE_U32:                                                // 32-bit was converted to 64 bit.
      case  PM_TYPE_U64:                                                // 64-bit unsigned integer
         rawval.ull -= zero.ull;                                        // converted.
         break;
 
      case  PM_TYPE_FLOAT:                                              // 32-bit was converted to double.
      case  PM_TYPE_DOUBLE:                                             // 64-bit floating point
         rawval.d -= zero.d;                                            // converted.
         break;
 
      case  PM_TYPE_STRING:                                             // array of char, do nothing for pointer.
         break;
 
      default:
         fprintf(stderr, "%s:%i pcp_event_info[%s] contains an unrecognized value type=%i.\n",
            __FILE__, __LINE__,  pcp_event_info[k].name, pcp_event_info[k].valType);
         exit(-1);                                                      // Quit, this shouldn't happen; something needs updating.
         break;
   } // end switch on type. 
   
   myCtl->pcpValue[event] = rawval.ull;                                 // The adjusted value.
} // end routine.

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Variable Documentation

_dl_non_dynamic_init

void(* _dl_non_dynamic_init) (void)

(

void

)

Definition at line 260 of file linux-pcp.c.

                  { return ((*pmLookupName_ptr) (numpid, namelist, pmidlist)); }

_papi_hwi_debug

int _papi_hwi_debug = DEBUG_SUBSTRATE

Definition at line 187 of file linux-pcp.c.

_pcp_vector

papi_vector_t _pcp_vector

Definition at line 182 of file linux-pcp.c.

ctxHandle

int ctxHandle = -1

static

Definition at line 192 of file linux-pcp.c.

dl1

void* dl1 = NULL

static

Definition at line 248 of file linux-pcp.c.

pcp_event_info

_pcp_event_info_t* pcp_event_info = NULL

static

Definition at line 190 of file linux-pcp.c.

pcp_main

char pcp_main[] =PAPI_PCP_MAIN

static

Definition at line 251 of file linux-pcp.c.

sEventCount

int sEventCount = 0

static

Definition at line 191 of file linux-pcp.c.

sEventInfoBlock

int sEventInfoBlock = ((8*1024) / sizeof(_pcp_event_info_t))

static

Definition at line 189 of file linux-pcp.c.

sEventInfoSize

int sEventInfoSize =0

static

Definition at line 188 of file linux-pcp.c.

sNameHash

_pcp_hash_t sNameHash[HASH_SIZE]

static

Definition at line 195 of file linux-pcp.c.

t2

struct timeval t1 t2

static

Definition at line 238 of file linux-pcp.c.