Built motion from commit 6a09e18b.|2.6.11

[motion2.git] / legacy-libs / grpc / deps / grpc / src / core / lib / iomgr / pollset_uv.cc

diff --git a/legacy-libs/grpc/deps/grpc/src/core/lib/iomgr/pollset_uv.cc b/legacy-libs/grpc/deps/grpc/src/core/lib/iomgr/pollset_uv.cc
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+++ b/legacy-libs/grpc/deps/grpc/src/core/lib/iomgr/pollset_uv.cc
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+/*
+ *
+ * Copyright 2016 gRPC authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#include <grpc/support/port_platform.h>
+
+#include "src/core/lib/iomgr/port.h"
+
+#ifdef GRPC_UV
+
+#include <grpc/support/alloc.h>
+#include <grpc/support/log.h>
+#include "src/core/lib/iomgr/pollset_custom.h"
+
+#include <uv.h>
+
+/* Indicates that grpc_pollset_work should run an iteration of the UV loop
+   before running callbacks. This defaults to 1, and should be disabled if
+   grpc_pollset_work will be called within the callstack of uv_run */
+int grpc_pollset_work_run_loop = 1;
+
+static bool g_kicked = false;
+
+typedef struct uv_poller_handle {
+  uv_timer_t poll_timer;
+  uv_timer_t kick_timer;
+  int refs;
+} uv_poller_handle;
+
+static uv_poller_handle* g_handle;
+
+static void init() {
+  g_handle = (uv_poller_handle*)gpr_malloc(sizeof(uv_poller_handle));
+  g_handle->refs = 2;
+  uv_timer_init(uv_default_loop(), &g_handle->poll_timer);
+  uv_timer_init(uv_default_loop(), &g_handle->kick_timer);
+}
+
+static void empty_timer_cb(uv_timer_t* handle) {}
+
+static void kick_timer_cb(uv_timer_t* handle) { g_kicked = false; }
+
+static void run_loop(size_t timeout) {
+  if (grpc_pollset_work_run_loop) {
+    if (timeout == 0) {
+      uv_run(uv_default_loop(), UV_RUN_NOWAIT);
+    } else {
+      uv_timer_start(&g_handle->poll_timer, empty_timer_cb, timeout, 0);
+      uv_run(uv_default_loop(), UV_RUN_ONCE);
+      uv_timer_stop(&g_handle->poll_timer);
+    }
+  }
+}
+
+static void kick() {
+  if (!g_kicked) {
+    g_kicked = true;
+    uv_timer_start(&g_handle->kick_timer, kick_timer_cb, 0, 0);
+  }
+}
+
+static void close_timer_cb(uv_handle_t* handle) {
+  g_handle->refs--;
+  if (g_handle->refs == 0) {
+    gpr_free(g_handle);
+  }
+}
+
+static void shutdown() {
+  uv_close((uv_handle_t*)&g_handle->poll_timer, close_timer_cb);
+  uv_close((uv_handle_t*)&g_handle->kick_timer, close_timer_cb);
+  if (grpc_pollset_work_run_loop) {
+    GPR_ASSERT(uv_run(uv_default_loop(), UV_RUN_DEFAULT) == 0);
+  }
+}
+
+grpc_custom_poller_vtable uv_pollset_vtable = {init, run_loop, kick, shutdown};
+
+#endif /* GRPC_UV */