Allow overwriting current thread in ThreadManager.
This prepares for introducing a simulated time rtc::ThreadManager
implementation that will run on a single underlying thread.
Bug: webrtc:11255
Change-Id: I793128cc0b8e649a3675914de67dfee3298b446a
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/165765
Commit-Queue: Sebastian Jansson <srte@webrtc.org>
Reviewed-by: Steve Anton <steveanton@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#30256}
diff --git a/rtc_base/thread.cc b/rtc_base/thread.cc
index 6c5830f..a8e89cd 100644
--- a/rtc_base/thread.cc
+++ b/rtc_base/thread.cc
@@ -237,12 +237,7 @@
return static_cast<Thread*>(pthread_getspecific(key_));
}
-void ThreadManager::SetCurrentThread(Thread* thread) {
-#if RTC_DLOG_IS_ON
- if (CurrentThread() && thread) {
- RTC_DLOG(LS_ERROR) << "SetCurrentThread: Overwriting an existing value?";
- }
-#endif // RTC_DLOG_IS_ON
+void ThreadManager::SetCurrentThreadInternal(Thread* thread) {
pthread_setspecific(key_, thread);
}
#endif
@@ -255,12 +250,24 @@
return static_cast<Thread*>(TlsGetValue(key_));
}
-void ThreadManager::SetCurrentThread(Thread* thread) {
- RTC_DCHECK(!CurrentThread() || !thread);
+void ThreadManager::SetCurrentThreadInternal(Thread* thread) {
TlsSetValue(key_, thread);
}
#endif
+void ThreadManager::SetCurrentThread(Thread* thread) {
+#if RTC_DLOG_IS_ON
+ if (CurrentThread() && thread) {
+ RTC_DLOG(LS_ERROR) << "SetCurrentThread: Overwriting an existing value?";
+ }
+#endif // RTC_DLOG_IS_ON
+ SetCurrentThreadInternal(thread);
+}
+
+void rtc::ThreadManager::ChangeCurrentThreadForTest(rtc::Thread* thread) {
+ SetCurrentThreadInternal(thread);
+}
+
Thread* ThreadManager::WrapCurrentThread() {
Thread* result = CurrentThread();
if (nullptr == result) {
diff --git a/rtc_base/thread.h b/rtc_base/thread.h
index b8af583..f8b41d1 100644
--- a/rtc_base/thread.h
+++ b/rtc_base/thread.h
@@ -90,6 +90,9 @@
Thread* CurrentThread();
void SetCurrentThread(Thread* thread);
+ // Allows changing the current thread, this is intended for tests where we
+ // want to simulate multiple threads running on a single physical thread.
+ void ChangeCurrentThreadForTest(Thread* thread);
// Returns a thread object with its thread_ ivar set
// to whatever the OS uses to represent the thread.
@@ -113,6 +116,7 @@
ThreadManager();
~ThreadManager();
+ void SetCurrentThreadInternal(Thread* thread);
void AddInternal(Thread* message_queue);
void RemoveInternal(Thread* message_queue);
void ClearInternal(MessageHandler* handler);