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#include <assert.h>
#include <stdio.h>
#include <emscripten/emmalloc.h>
#include <emscripten/html5.h>
#include <emscripten/heap.h>
#ifdef __wasm64__
#define MAX_HEAP (4*1024*1024*1024ll)
#else
// We don't allow the full 4Gb on wasm32 since that size would wrap
// back to zero. See getHeapMax in library.js.
#define MAX_HEAP (4*1024*1024*1024ll - 65536)
#endif
int main() {
size_t prevheapsize = 0;
int count = 0;
while (1) {
size_t heap_size = emscripten_get_heap_size();
if (prevheapsize != heap_size) {
printf("Heap size: %zu inc: %zu count: %d\n", heap_size, heap_size - prevheapsize, count);
}
prevheapsize = heap_size;
void *ptr = malloc(16*1024*1024);
if (!ptr) {
printf("Cannot malloc anymore. Final heap size: %zu\n", emscripten_get_heap_size());
assert(emscripten_get_heap_size() == MAX_HEAP);
return 0;
}
count++;
}
}
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