--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/third_party/libuv/test/test-ref.c	Wed Jan 14 19:39:52 2026 -0800
@@ -0,0 +1,445 @@
+/* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "uv.h"
+#include "task.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+
+static uv_write_t write_req;
+static uv_shutdown_t shutdown_req;
+static uv_connect_t connect_req;
+
+static char buffer[32767];
+
+static int req_cb_called;
+static int connect_cb_called;
+static int write_cb_called;
+static int shutdown_cb_called;
+static int close_cb_called;
+
+
+static void close_cb(uv_handle_t* handle) {
+  close_cb_called++;
+}
+
+
+static void do_close(void* handle) {
+  close_cb_called = 0;
+  uv_close((uv_handle_t*)handle, close_cb);
+  ASSERT_OK(close_cb_called);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, close_cb_called);
+}
+
+
+static void fail_cb(void) {
+  FATAL("fail_cb should not have been called");
+}
+
+
+static void fail_cb2(void) {
+  ASSERT(0 && "fail_cb2 should not have been called");
+}
+
+
+static void req_cb(uv_udp_send_t* req, int status) {
+  req_cb_called++;
+}
+
+
+static void shutdown_cb(uv_shutdown_t* req, int status) {
+  ASSERT_PTR_EQ(req, &shutdown_req);
+  shutdown_cb_called++;
+}
+
+
+static void write_cb(uv_write_t* req, int status) {
+  ASSERT_PTR_EQ(req, &write_req);
+  uv_shutdown(&shutdown_req, req->handle, shutdown_cb);
+  write_cb_called++;
+}
+
+
+static void connect_and_write(uv_connect_t* req, int status) {
+  uv_buf_t buf = uv_buf_init(buffer, sizeof buffer);
+  ASSERT_PTR_EQ(req, &connect_req);
+  ASSERT_OK(status);
+  uv_write(&write_req, req->handle, &buf, 1, write_cb);
+  connect_cb_called++;
+}
+
+
+
+static void connect_and_shutdown(uv_connect_t* req, int status) {
+  ASSERT_PTR_EQ(req, &connect_req);
+  ASSERT_OK(status);
+  uv_shutdown(&shutdown_req, req->handle, shutdown_cb);
+  connect_cb_called++;
+}
+
+
+TEST_IMPL(ref) {
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(idle_ref) {
+  uv_idle_t h;
+  uv_idle_init(uv_default_loop(), &h);
+  uv_idle_start(&h, (uv_idle_cb) fail_cb2);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(async_ref) {
+  uv_async_t h;
+  uv_async_init(uv_default_loop(), &h, NULL);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(prepare_ref) {
+  uv_prepare_t h;
+  uv_prepare_init(uv_default_loop(), &h);
+  uv_prepare_start(&h, (uv_prepare_cb) fail_cb2);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(check_ref) {
+  uv_check_t h;
+  uv_check_init(uv_default_loop(), &h);
+  uv_check_start(&h, (uv_check_cb) fail_cb2);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+static void prepare_cb(uv_prepare_t* h) {
+  ASSERT_NOT_NULL(h);
+  uv_unref((uv_handle_t*)h);
+}
+
+
+TEST_IMPL(unref_in_prepare_cb) {
+  uv_prepare_t h;
+  uv_prepare_init(uv_default_loop(), &h);
+  uv_prepare_start(&h, prepare_cb);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(timer_ref) {
+  uv_timer_t h;
+  uv_timer_init(uv_default_loop(), &h);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(timer_ref2) {
+  uv_timer_t h;
+  uv_timer_init(uv_default_loop(), &h);
+  uv_timer_start(&h, (uv_timer_cb)fail_cb, 42, 42);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(fs_event_ref) {
+#if defined(NO_FS_EVENTS)
+  RETURN_SKIP(NO_FS_EVENTS);
+#endif
+  uv_fs_event_t h;
+  uv_fs_event_init(uv_default_loop(), &h);
+  uv_fs_event_start(&h, (uv_fs_event_cb)fail_cb, ".", 0);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(fs_poll_ref) {
+  uv_fs_poll_t h;
+  uv_fs_poll_init(uv_default_loop(), &h);
+  uv_fs_poll_start(&h, NULL, ".", 999);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(tcp_ref) {
+  uv_tcp_t h;
+  uv_tcp_init(uv_default_loop(), &h);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(tcp_ref2) {
+  uv_tcp_t h;
+  uv_tcp_init(uv_default_loop(), &h);
+  uv_listen((uv_stream_t*)&h, 128, (uv_connection_cb)fail_cb);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(tcp_ref2b) {
+  uv_tcp_t h;
+  uv_tcp_init(uv_default_loop(), &h);
+  uv_listen((uv_stream_t*)&h, 128, (uv_connection_cb)fail_cb);
+  uv_unref((uv_handle_t*)&h);
+  uv_close((uv_handle_t*)&h, close_cb);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, close_cb_called);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(tcp_ref3) {
+  struct sockaddr_in addr;
+  uv_tcp_t h;
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
+  uv_tcp_init(uv_default_loop(), &h);
+  uv_tcp_connect(&connect_req,
+                 &h,
+                 (const struct sockaddr*) &addr,
+                 connect_and_shutdown);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, connect_cb_called);
+  ASSERT_EQ(1, shutdown_cb_called);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(tcp_ref4) {
+  struct sockaddr_in addr;
+  uv_tcp_t h;
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
+  uv_tcp_init(uv_default_loop(), &h);
+  uv_tcp_connect(&connect_req,
+                 &h,
+                 (const struct sockaddr*) &addr,
+                 connect_and_write);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, connect_cb_called);
+  ASSERT_EQ(1, write_cb_called);
+  ASSERT_EQ(1, shutdown_cb_called);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(udp_ref) {
+  uv_udp_t h;
+  uv_udp_init(uv_default_loop(), &h);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(udp_ref2) {
+  struct sockaddr_in addr;
+  uv_udp_t h;
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
+  uv_udp_init(uv_default_loop(), &h);
+  uv_udp_bind(&h, (const struct sockaddr*) &addr, 0);
+  uv_udp_recv_start(&h, (uv_alloc_cb)fail_cb, (uv_udp_recv_cb)fail_cb);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(udp_ref3) {
+  struct sockaddr_in addr;
+  uv_buf_t buf = uv_buf_init("PING", 4);
+  uv_udp_send_t req;
+  uv_udp_t h;
+
+  ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
+  uv_udp_init(uv_default_loop(), &h);
+  uv_udp_send(&req,
+              &h,
+              &buf,
+              1,
+              (const struct sockaddr*) &addr,
+              req_cb);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, req_cb_called);
+  do_close(&h);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(pipe_ref) {
+  uv_pipe_t h;
+  uv_pipe_init(uv_default_loop(), &h, 0);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(pipe_ref2) {
+  uv_pipe_t h;
+  uv_pipe_init(uv_default_loop(), &h, 0);
+  uv_listen((uv_stream_t*)&h, 128, (uv_connection_cb)fail_cb);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(pipe_ref3) {
+  uv_pipe_t h;
+  uv_pipe_init(uv_default_loop(), &h, 0);
+  uv_pipe_connect(&connect_req, &h, TEST_PIPENAME, connect_and_shutdown);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, connect_cb_called);
+  ASSERT_EQ(1, shutdown_cb_called);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(pipe_ref4) {
+  uv_pipe_t h;
+  uv_pipe_init(uv_default_loop(), &h, 0);
+  uv_pipe_connect(&connect_req, &h, TEST_PIPENAME, connect_and_write);
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+  ASSERT_EQ(1, connect_cb_called);
+  ASSERT_EQ(1, write_cb_called);
+  ASSERT_EQ(1, shutdown_cb_called);
+  do_close(&h);
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(process_ref) {
+  /* spawn_helper4 blocks indefinitely. */
+  char *argv[] = { NULL, "spawn_helper4", NULL };
+  uv_process_options_t options;
+  size_t exepath_size;
+  char exepath[256];
+  uv_process_t h;
+  int r;
+
+  memset(&options, 0, sizeof(options));
+  exepath_size = sizeof(exepath);
+
+  r = uv_exepath(exepath, &exepath_size);
+  ASSERT_OK(r);
+
+  argv[0] = exepath;
+  options.file = exepath;
+  options.args = argv;
+  options.exit_cb = NULL;
+
+  r = uv_spawn(uv_default_loop(), &h, &options);
+  ASSERT_OK(r);
+
+  uv_unref((uv_handle_t*)&h);
+  uv_run(uv_default_loop(), UV_RUN_DEFAULT);
+
+  r = uv_process_kill(&h, /* SIGTERM */ 15);
+  ASSERT_OK(r);
+
+  do_close(&h);
+
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}
+
+
+TEST_IMPL(has_ref) {
+  uv_idle_t h;
+  uv_idle_init(uv_default_loop(), &h);
+  uv_ref((uv_handle_t*)&h);
+  ASSERT_EQ(1, uv_has_ref((uv_handle_t*)&h));
+  uv_unref((uv_handle_t*)&h);
+  ASSERT_OK(uv_has_ref((uv_handle_t*)&h));
+  MAKE_VALGRIND_HAPPY(uv_default_loop());
+  return 0;
+}