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Merge "fix an issue where invalidate/transactions could be missed"

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This commit is contained in:
Mathias Agopian 2011-12-04 00:45:50 -08:00 committed by Android (Google) Code Review
commit 75b95f5bc1
2 changed files with 9 additions and 6 deletions
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12
services/surfaceflinger/MessageQueue.cpp
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@ -44,7 +44,7 @@ void MessageBase::handleMessage(const Message&) {
// ---------------------------------------------------------------------------
MessageQueue::MessageQueue()
: mLooper(new Looper(true))
: mLooper(new Looper(true)), mWorkPending(0)
{
}
@ -58,11 +58,11 @@ void MessageQueue::waitMessage() {
int32_t ret = mLooper->pollOnce(-1);
switch (ret) {
case ALOOPER_POLL_WAKE:
// we got woken-up there is work to do in the main loop
return;
case ALOOPER_POLL_CALLBACK:
// callback was handled, loop again
// callback and/or wake
if (android_atomic_and(0, &mWorkPending)) {
return;
}
continue;
case ALOOPER_POLL_TIMEOUT:
@ -94,7 +94,9 @@ status_t MessageQueue::postMessage(
}
status_t MessageQueue::invalidate() {
if (android_atomic_or(1, &mWorkPending) == 0) {
mLooper->wake();
}
return NO_ERROR;
}

1
services/surfaceflinger/MessageQueue.h
View File

@ -55,6 +55,7 @@ private:
class MessageQueue {
sp<Looper> mLooper;
volatile int32_t mWorkPending;
public:
MessageQueue();