More memory allocators

std/assembly/allocator/emscripten.ts

@@ -0,0 +1,20 @@
+///////////////////////// 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;
+
+export function allocate_memory(size: usize): usize {
+  return _malloc(size);
+}
+
+export function free_memory(ptr: usize): void {
+  _free(ptr);
+}
+
+export function reset_memory(): void {
+  throw new Error("not supported");
+}