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  1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. #define STRINGIZE(x) #x
  6. #define LINEFILE(x) "Line " STRINGIZE(x) " of File " __FILE__
  7. #define LINE_FILE LINEFILE(__LINE__)
  8.  
  9. /* Comment out the next line to disable debugging diagnostics. */
  10. #define DEBUG_D
  11. #ifdef DEBUG_D
  12. /* Debugging functions and variables. */
  13. static unsigned long malloc_b = 0;
  14. static unsigned long malloc_c = 0;
  15. static unsigned long free_c = 0;
  16.  
  17. static inline void* dmalloc(size_t size);
  18. static inline void dfree(void* object);
  19. static inline void dprintc(void);
  20.  
  21. static inline void* dmalloc(size_t size)
  22. {
  23.     malloc_b += size;
  24.     ++malloc_c;
  25.     return malloc(size);
  26. }
  27.  
  28. static inline void dfree(void* object)
  29. {
  30.     free(object);
  31.     ++free_c;
  32. }
  33.  
  34. static inline void dprintc(void)
  35. {
  36.     fprintf(stderr, "\nAllocated %lu bytes; malloc() called: %lu.\nfree() called: %lu.\n",
  37.             malloc_b, malloc_c, free_c);
  38. }
  39.  
  40. #define malloc dmalloc
  41. #define free dfree
  42.  
  43. #endif /* ifdef DEBUG_D */
  44.  
  45. static inline void swap(void* A, void* B, size_t size);
  46.  
  47. int main(void)
  48. {
  49.     unsigned long long mb;
  50.     while (malloc(sizeof(char) << 20)) ++mb;
  51.     printf("Allocated %llu Kilobytes Total.\n", mb);
  52.     dprintc();
  53.     return 0;
  54. }
  55.  
  56. static inline void swap(void* A, void* B, size_t size)
  57. {
  58.     char* temp;
  59.     temp = malloc(size);
  60.     if (temp)
  61.     {
  62.         memcpy(temp, A, size);
  63.         memcpy(A, B, size);
  64.         memcpy(B, temp, size);
  65.         free(temp);
  66.     }
  67. }
Success #stdin #stdout 0.01s 261824KB
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Standard input is empty
stdout
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Allocated 577733508809539825 Kilobytes Total.
https://ideone.com/UPjm6
language:
C (gcc 8.3)
created:
12 years ago
visibility:
public

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