Support for Signal calls.

Merge in RedPhone

// FREEBIE

jni/webrtc/system_wrappers/source/thread_unittest.cc

@@ -0,0 +1,56 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include "webrtc/system_wrappers/interface/thread_wrapper.h"
+
+#include "testing/gtest/include/gtest/gtest.h"
+#include "webrtc/system_wrappers/interface/scoped_ptr.h"
+#include "webrtc/system_wrappers/interface/sleep.h"
+
+namespace webrtc {
+
+// Function that does nothing, and reports success.
+bool NullRunFunction(void* obj) {
+  SleepMs(0);  // Hand over timeslice, prevents busy looping.
+  return true;
+}
+
+TEST(ThreadTest, StartStop) {
+  ThreadWrapper* thread = ThreadWrapper::CreateThread(&NullRunFunction, NULL);
+  unsigned int id = 42;
+  ASSERT_TRUE(thread->Start(id));
+  EXPECT_TRUE(thread->Stop());
+  delete thread;
+}
+
+// Function that sets a boolean.
+bool SetFlagRunFunction(void* obj) {
+  bool* obj_as_bool = static_cast<bool*>(obj);
+  *obj_as_bool = true;
+  SleepMs(0);  // Hand over timeslice, prevents busy looping.
+  return true;
+}
+
+TEST(ThreadTest, RunFunctionIsCalled) {
+  bool flag = false;
+  ThreadWrapper* thread = ThreadWrapper::CreateThread(&SetFlagRunFunction,
+                                                      &flag);
+  unsigned int id = 42;
+  ASSERT_TRUE(thread->Start(id));
+
+  // At this point, the flag may be either true or false.
+  EXPECT_TRUE(thread->Stop());
+
+  // We expect the thread to have run at least once.
+  EXPECT_TRUE(flag);
+  delete thread;
+}
+
+}  // namespace webrtc