appio_test_fread_fwrite.c File Reference

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Macros
#define	NUM_EVENTS   8

Functions
int	main (int argc, char **argv)

Macro Definition Documentation

NUM_EVENTS

#define NUM_EVENTS   8

Definition at line 24 of file appio_test_fread_fwrite.c.

Function Documentation

main()

int main	(	int	argc,
		char **	argv
	)

Definition at line 26 of file appio_test_fread_fwrite.c.

                                {
  int EventSet = PAPI_NULL; 
  const char* names[NUM_EVENTS] = {"READ_CALLS", "READ_BYTES","READ_USEC","READ_ERR", "READ_EOF", "WRITE_CALLS","WRITE_BYTES","WRITE_USEC"};
  long long values[NUM_EVENTS];
 
  char *infile = "/etc/group";
 
  /* Set TESTS_QUIET variable */
  tests_quiet( argc, argv );
 
  int version = PAPI_library_init (PAPI_VER_CURRENT);
  if (version != PAPI_VER_CURRENT) {
    fprintf(stderr, "PAPI_library_init version mismatch\n");
    exit(1);
  }
 
  /* Create the Event Set */
  if (PAPI_create_eventset(&EventSet) != PAPI_OK) {
    fprintf(stderr, "Error creating event set\n");
      exit(2);
  }
 
  if (!TESTS_QUIET) printf("This program will read %s and write it to /dev/null\n", infile);
  FILE* fdin=fopen(infile, "r");
  if (fdin  == NULL) perror("Could not open file for reading: \n");
  FILE* fout=fopen("/dev/null", "w");
  if (fout  == NULL) perror("Could not open file for writing: \n");
  int bytes = 0;
  char buf[1024];
 
  int retval;
  int e;
  int event_code;
  for (e=0; e<NUM_EVENTS; e++) {
    retval = PAPI_event_name_to_code((char*)names[e], &event_code);
    if (retval != PAPI_OK) {
      fprintf(stderr, "Error getting code for %s\n", names[e]);
      exit(2);
    }
    retval = PAPI_add_event(EventSet, event_code);
    if (retval != PAPI_OK) {
      fprintf(stderr, "Error adding %s to event set\n", names[e]);
      exit(2);
    }
  }
 
  /* Start counting events */
  if (PAPI_start(EventSet) != PAPI_OK) {
    fprintf(stderr, "Error in PAPI_start\n");
    exit(1);
  }
 
//if (PAPI_read(EventSet, values) != PAPI_OK)
//   handle_error(1);
//printf("After reading the counters: %lld\n",values[0]);
 
  while ((bytes = fread(buf, 1, 1024, fdin)) > 0) {
    fwrite(buf, 1, bytes, fout);
  }
 
  fclose(fdin);
  fclose(fout);
 
  /* Stop counting events */
  if (PAPI_stop(EventSet, values) != PAPI_OK) {
    fprintf(stderr, "Error in PAPI_stop\n");
  }
  
  if (!TESTS_QUIET) {
    printf("----\n");
    for (e=0; e<NUM_EVENTS; e++)  
      printf("%s: %lld\n", names[e], values[e]);
  }
  test_pass( __FILE__ );
  return 0;
}

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