Function initialize_emmalloc_heap

system/lib/emmalloc.c:548–563

Initialize emmalloc during static initialization. See system/lib/README.md for static constructor ordering.

// Initialize emmalloc during static initialization.
// See system/lib/README.md for static constructor ordering.
__attribute__((constructor(47)))
static void initialize_emmalloc_heap() {
  // Initialize circular doubly linked lists representing free space
  // Never useful to unroll this for loop, just takes up code size.
#pragma clang loop unroll(disable)
  for (int i = 0; i < NUM_FREE_BUCKETS; ++i) {
    freeRegionBuckets[i].prev = freeRegionBuckets[i].next = &freeRegionBuckets[i];
  }

#ifdef EMMALLOC_VERBOSE
  MAIN_THREAD_ASYNC_EM_ASM(out('initialize_emmalloc_heap()'));
#endif

  // Start with a tiny dynamic region.
  claim_more_memory(3*sizeof(Region));
}

void emmalloc_blank_slate_from_orbit() {
  MALLOC_ACQUIRE();