86 строки
1.9 KiB
C
86 строки
1.9 KiB
C
// Emscripten tests
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <dlfcn.h>
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typedef void *(*mallocer)(int n);
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typedef void (*freeer)(void *p);
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void *lib_handle;
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int handles = 0;
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mallocer mallocproxy = NULL;
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freeer freeproxy = NULL;
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void get_lib() {
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//printf("get lib\n");
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lib_handle = dlopen("liblib.so", RTLD_NOW);
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assert(lib_handle != NULL);
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handles++;
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mallocproxy = (mallocer)dlsym(lib_handle, "mallocproxy");
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assert(mallocproxy!= NULL);
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freeproxy = (freeer)dlsym(lib_handle, "freeproxy");
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assert(freeproxy!= NULL);
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}
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void unget_lib() {
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//printf("unget lib\n");
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assert(lib_handle);
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dlclose(lib_handle);
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handles--;
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if (handles == 0) lib_handle = NULL;
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}
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int main() {
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int n = 0, total = 0, l = 0;
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void *allocs[50];
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allocs[10] = malloc(10); // pull in real malloc
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for (int i = 0; i < 1000; i++) {
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//printf("%d: total ever %d MB, current MB %d, total libs %d\n", i, total, n, l);
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if (i % 5 == 0) {
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if (handles < 10) {
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get_lib();
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l++;
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}
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}
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if (i % 7 == 0) {
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if (handles > 0) unget_lib();
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}
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if (i % 3 == 0) {
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if (handles > 0) {
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if (n < 10) {
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if (i % 2 == 0) {
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//printf("alloc\n");
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allocs[n++] = mallocproxy(1024*1024);
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} else {
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//printf("real alloc\n");
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allocs[n++] = malloc(1024*1024);
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}
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total++;
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} else {
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//printf("real free\n");
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free(allocs[--n]); // real free
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}
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}
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}
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if (i % 4 == 0) {
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if (handles > 0 && n > 0) {
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//printf("free\n");
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if (i % 2 == 0) {
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//printf("free\n");
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freeproxy(allocs[--n]);
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} else {
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//printf("real free\n");
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free(allocs[--n]);
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}
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}
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}
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}
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while (n > 0) free(allocs[--n]); // real free
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while (handles > 0) unget_lib();
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printf("*%d,%d*\n", total, l);
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}
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