mirror of
https://github.com/oven-sh/bun
synced 2026-02-10 02:48:50 +00:00
efabdcbe1f
Co-authored-by: Kai Tamkun <kai@tamkun.io> Co-authored-by: Jarred Sumner <jarred@jarredsumner.com> Co-authored-by: Ashcon Partovi <ashcon@partovi.net> Co-authored-by: Ciro Spaciari <ciro.spaciari@gmail.com> Co-authored-by: Dylan Conway <35280289+dylan-conway@users.noreply.github.com> Co-authored-by: 190n <190n@users.noreply.github.com>
73 lines
3.3 KiB
C
73 lines
3.3 KiB
C
// This is a separate addon because the main one is built with
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// NAPI_VERSION_EXPERIMENTAL, which makes finalizers run synchronously during GC
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// and requires node_api_post_finalizer to run functions that could affect JS
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// engine state. This module's purpose is to call napi_delete_reference directly
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// during a finalizer -- not during a callback scheduled with
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// node_api_post_finalizer -- so it cannot use NAPI_VERSION_EXPERIMENTAL.
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#include <assert.h>
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#include <js_native_api.h>
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#include <node_api.h>
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#include <stdio.h>
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#include <stdlib.h>
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// "we have static_assert at home" - MSVC
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char assertion[NAPI_VERSION == 8 ? 1 : -1];
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#define NODE_API_CALL_CUSTOM_RETURN(env, call, retval) \
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do { \
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napi_status status = (call); \
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if (status != napi_ok) { \
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const napi_extended_error_info *error_info = NULL; \
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napi_get_last_error_info((env), &error_info); \
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const char *err_message = error_info->error_message; \
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bool is_pending; \
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napi_is_exception_pending((env), &is_pending); \
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/* If an exception is already pending, don't rethrow it */ \
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if (!is_pending) { \
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const char *message = \
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(err_message == NULL) ? "empty error message" : err_message; \
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napi_throw_error((env), NULL, message); \
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} \
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return retval; \
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} \
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} while (0)
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#define NODE_API_CALL(env, call) NODE_API_CALL_CUSTOM_RETURN(env, call, NULL)
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#define NODE_API_CALL_RETURN_VOID(env, call) \
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NODE_API_CALL_CUSTOM_RETURN(env, call, )
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typedef struct {
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napi_ref ref;
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} RefHolder;
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static void finalizer(napi_env env, void *data, void *hint) {
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printf("finalizer\n");
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(void)hint;
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RefHolder *ref_holder = (RefHolder *)data;
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NODE_API_CALL_RETURN_VOID(env, napi_delete_reference(env, ref_holder->ref));
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free(ref_holder);
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}
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static napi_value create_ref(napi_env env, napi_callback_info info) {
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(void)info;
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napi_value object;
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NODE_API_CALL(env, napi_create_object(env, &object));
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RefHolder *ref_holder = calloc(1, sizeof *ref_holder);
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NODE_API_CALL(env, napi_wrap(env, object, ref_holder, finalizer, NULL,
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&ref_holder->ref));
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napi_value undefined;
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NODE_API_CALL(env, napi_get_undefined(env, &undefined));
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return undefined;
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}
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/* napi_value */ NAPI_MODULE_INIT(/* napi_env env, napi_value exports */) {
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napi_value create_ref_function;
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NODE_API_CALL(env,
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napi_create_function(env, "create_ref", NAPI_AUTO_LENGTH,
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create_ref, NULL, &create_ref_function));
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NODE_API_CALL(env, napi_set_named_property(env, exports, "create_ref",
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create_ref_function));
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return exports;
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}
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