assemblyscript/std/assembly/allocator/emscripten.ts

/**
 * @file Emscripten Memory Allocator
 *
 * Uses Emscripten's exported _malloc and _free implementations, i.e., when linking with
 * Emscripten-compiled programs that already provide these. Differs from 'system' in that their
 * names are prefixed with an underscore.
 */

declare function _malloc(size: usize): usize;
declare function _free(ptr: usize): void;

@global
export function allocate_memory(size: usize): usize {
  return _malloc(size);
}

@global
export function free_memory(ptr: usize): void {
  _free(ptr);
}

@global
export function reset_memory(): void {
  unreachable();
}