mirror of https://github.com/nodejs/node.git
102 lines
2.9 KiB
C
102 lines
2.9 KiB
C
#include "node_api.h"
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#include "assert.h"
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#include "uv.h"
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#include <stdlib.h>
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#include "../../js-native-api/common.h"
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static int cleanup_hook_count = 0;
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static void MustNotCall(napi_async_cleanup_hook_handle hook, void* arg) {
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assert(0);
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}
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struct AsyncData {
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uv_async_t async;
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napi_env env;
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napi_async_cleanup_hook_handle handle;
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};
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static struct AsyncData* CreateAsyncData() {
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struct AsyncData* data = (struct AsyncData*) malloc(sizeof(struct AsyncData));
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data->handle = NULL;
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return data;
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}
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static void AfterCleanupHookTwo(uv_handle_t* handle) {
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cleanup_hook_count++;
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struct AsyncData* data = (struct AsyncData*) handle->data;
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napi_status status = napi_remove_async_cleanup_hook(data->handle);
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assert(status == napi_ok);
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free(data);
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}
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static void AfterCleanupHookOne(uv_async_t* async) {
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cleanup_hook_count++;
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uv_close((uv_handle_t*) async, AfterCleanupHookTwo);
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}
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static void AsyncCleanupHook(napi_async_cleanup_hook_handle handle, void* arg) {
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cleanup_hook_count++;
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struct AsyncData* data = (struct AsyncData*) arg;
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uv_loop_t* loop;
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napi_status status = napi_get_uv_event_loop(data->env, &loop);
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assert(status == napi_ok);
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int err = uv_async_init(loop, &data->async, AfterCleanupHookOne);
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assert(err == 0);
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data->async.data = data;
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data->handle = handle;
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uv_async_send(&data->async);
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}
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static void ObjectFinalizer(napi_env env, void* data, void* hint) {
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// AsyncCleanupHook and its subsequent callbacks are called twice.
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assert(cleanup_hook_count == 6);
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napi_ref* ref = data;
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NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, *ref));
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free(ref);
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}
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static void CreateObjectWrap(napi_env env) {
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napi_value js_obj;
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napi_ref* ref = malloc(sizeof(*ref));
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NODE_API_CALL_RETURN_VOID(env, napi_create_object(env, &js_obj));
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NODE_API_CALL_RETURN_VOID(
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env, napi_wrap(env, js_obj, ref, ObjectFinalizer, NULL, ref));
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// create a strong reference so that the finalizer is called at shutdown.
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NODE_API_CALL_RETURN_VOID(env, napi_reference_ref(env, *ref, NULL));
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}
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static napi_value Init(napi_env env, napi_value exports) {
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// Reinitialize the static variable to be compatible with musl libc.
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cleanup_hook_count = 0;
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// Create object wrap before cleanup hooks.
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CreateObjectWrap(env);
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{
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struct AsyncData* data = CreateAsyncData();
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data->env = env;
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napi_add_async_cleanup_hook(env, AsyncCleanupHook, data, &data->handle);
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}
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{
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struct AsyncData* data = CreateAsyncData();
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data->env = env;
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napi_add_async_cleanup_hook(env, AsyncCleanupHook, data, NULL);
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}
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{
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napi_async_cleanup_hook_handle must_not_call_handle;
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napi_add_async_cleanup_hook(
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env, MustNotCall, NULL, &must_not_call_handle);
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napi_remove_async_cleanup_hook(must_not_call_handle);
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}
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// Create object wrap after cleanup hooks.
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CreateObjectWrap(env);
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return NULL;
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}
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NAPI_MODULE(NODE_GYP_MODULE_NAME, Init)
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