malloc.c (1915B)
1 #! /usr/bin/env sheepy 2 3 #include "libsheepyObject.h" 4 5 int argc; char **argv; 6 7 #define COUNT 16 8 char *pointers[COUNT]; 9 10 int main(int ARGC, char** ARGV) { 11 12 argc = ARGC; argv = ARGV; 13 14 puts("malloc"); 15 char *s; 16 u64 start, end; 17 range(i, COUNT) { 18 start = getMonotonicTime(); 19 s = malloc((1<<i)*1024); 20 pointers[i] = s; 21 end = getMonotonicTime(); 22 printf("%d %p size: %dKB, time: %ldns\n", (int)i ,s, 1<<i, end-start); 23 } 24 25 put 26 27 puts("alloca"); 28 range(i, 12) { 29 start = getMonotonicTime(); 30 s = alloca((1<<i)*1024); 31 end = getMonotonicTime(); 32 printf("alloca %d %p size: %dKB, time: %ldns\n", (int)i ,s, 1<<i, end-start); 33 } 34 35 put 36 puts("accesses in malloc"); 37 start = getMonotonicTime(); 38 range(i, COUNT) { 39 rangeStep(ix, (1<<i)*1024, 4096) { 40 pointers[i][ix] = '1'; 41 } 42 } 43 end = getMonotonicTime(); 44 printf("1 - access malloc'd buffers - time: %ldms\n", (end-start)/1000000); 45 46 start = getMonotonicTime(); 47 range(i, COUNT) { 48 rangeStep(ix, (1<<i)*1024, 4096) { 49 pointers[i][ix] = '1'; 50 } 51 } 52 end = getMonotonicTime(); 53 printf("2 - access malloc'd buffers - time: %ldms\n", (end-start)/1000000); 54 55 put 56 puts("realloc"); 57 range(i, COUNT) { 58 59 start = getMonotonicTime(); 60 pointers[i] = realloc(pointers[i], (1<<i)*1024 + (1<<i)*1024); 61 end = getMonotonicTime(); 62 printf("%d %p size: %dKB, time: %ldns\n", (int)i ,pointers[i], 1<<i, end-start); 63 } 64 65 put 66 range(i, COUNT) { 67 68 start = getMonotonicTime(); 69 pointers[i] = realloc(pointers[i], (1<<i)*1024 - 128); 70 end = getMonotonicTime(); 71 printf("%d %p size: %dKB, time: %ldns\n", (int)i ,pointers[i], 1<<i, end-start); 72 } 73 74 put 75 puts("free"); 76 range(i, COUNT) { 77 start = getMonotonicTime(); 78 free(pointers[i]); 79 end = getMonotonicTime(); 80 printf("%d %p size: %dKB, time: %ldns\n", (int)i ,pointers[i], 1<<i, end-start); 81 } 82 }