push the delayed function of setTimeout into local rootset

Signed-off-by: wenlingyun1 <[email protected]>

runtime-library/stdlib/lib_timer.c

@@ -5,11 +5,13 @@
 
 #include "bh_hashmap.h"
 #include "wasm_export.h"
+#include "gc_export.h"
 
 wasm_exec_env_t env;
 HashMap *timer_map;
 void *(*_createTimer)(uint64_t timeout);
 bool (*_destroyTimer)(void *timer_id);
+static uint32_t local_obj_ref_count;
 
 double
 setTimeout(wasm_exec_env_t exec_env, void *closure, double delay, void *args)
@@ -20,8 +22,13 @@ setTimeout(wasm_exec_env_t exec_env, void *closure, double delay, void *args)
     if (_createTimer != NULL) {
         timer_id = _createTimer(delay);
         bh_hash_map_insert(timer_map, timer_id, closure);
+        wasm_local_obj_ref_t local_ref;
+        wasm_runtime_push_local_obj_ref(env, &local_ref);
+        local_ref.val = (wasm_obj_t)closure;
+        local_obj_ref_count++;
         return (double)(uintptr_t)(timer_id);
     }
+
     return 0;
 }
 
@@ -30,12 +37,14 @@ clearTimeout(wasm_exec_env_t exec_env, double id)
 {
     void *timer_id = (void *)(uintptr_t)id;
 
+    local_obj_ref_count--;
     if (id == 0) {
         return;
     }
     if (_destroyTimer != NULL) {
         _destroyTimer(timer_id);
     }
+    wasm_runtime_pop_local_obj_refs(exec_env, local_obj_ref_count);
 }
 
 /* clang-format off */