dhat/tests/basic.c

   1 // Some basic allocations and accesses.
   2
   3 #include <stdint.h>
   4 #include <stdlib.h>
   5 #include <string.h>
   6 #include "dhat/dhat.h"
   7
   8 int main(void)
   9 {
  10    int64_t* m = malloc(1000);
  11    m[0] = 1;                     // write 8 bytes
  12    m[10] = m[1];                 // read and write 8 bytes
  13
  14    char* c = calloc(1, 2000);
  15    for (int i = 0; i < 1000; i++) {
  16       c[i + 1000] = c[i];        // read and write 1000 bytes
  17    }
  18
  19    char* r = realloc(m, 3000);   // read and write 1000 bytes (memcpy)
  20    for (int i = 0; i < 500; i++) {
  21       r[i + 2000] = 99;          // write 500 bytes
  22    }
  23
  24    c = realloc(c, 1000);         // read and write 1000 bytes (memcpy)
  25
  26    free(c);
  27                                  // totals: 3008 read, 3516 write
  28
  29    // Should be ignored because we're not in ad hoc mode.
  30    DHAT_AD_HOC_EVENT(100);
  31
  32    return 0;
  33 }