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fix vsync dead lock

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Change-Id: I306eb2c0c71213100df6faa6edeecdb7dfa1b571
Signed-off-by: lizheng <lizheng2@huawei.com>
This commit is contained in:
lizheng 2021-12-22 17:28:33 +08:00
parent dc5d42a5d3
commit 48fb6d2019
3 changed files with 29 additions and 11 deletions
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5
frameworks/vsync/src/vsync_callback_proxy.cpp
View File

@ -31,7 +31,7 @@ VsyncCallbackProxy::VsyncCallbackProxy(const sptr<IRemoteObject>& impl)
GSError VsyncCallbackProxy::OnVsync(int64_t timestamp)
{
MessageOption opt;
MessageOption opt(MessageOption::TF_ASYNC);
MessageParcel arg;
MessageParcel ret;
@ -53,8 +53,7 @@ GSError VsyncCallbackProxy::OnVsync(int64_t timestamp)
return GSERROR_BINDER;
}
int result = ret.ReadInt32();
GSError err = (GSError)ReturnValueTester::Get<int>(result);
GSError err = (GSError)ReturnValueTester::Get<int>(GSERROR_OK);
if (err != GSERROR_OK) {
VLOG_FAILURE_NO(err);
return err;

4
frameworks/vsync/src/vsync_helper_impl.cpp
View File

@ -60,6 +60,7 @@ GSError VsyncClient::InitService()
{
std::lock_guard<std::mutex> lock(serviceMutex_);
if (service_ == nullptr) {
ScopedBytrace func(__func__);
auto sam = StaticCall::GetInstance()->GetSystemAbilityManager();
if (sam == nullptr) {
VLOG_FAILURE_RET(GSERROR_CONNOT_CONNECT_SAMGR);
@ -146,6 +147,7 @@ GSError VsyncClient::Init(bool restart)
GSError VsyncClient::InitListener()
{
while (listener_ == nullptr) {
ScopedBytrace func(__func__);
auto vret = GSERROR_OK;
{
std::lock_guard<std::mutex> lock(serviceMutex_);
@ -211,9 +213,9 @@ GSError VsyncClient::RequestFrameCallback(const struct FrameCallback &cb)
{
std::lock_guard<std::mutex> lockGuard(callbacksMapMutex_);
callbacksMap_[vsyncID].push(ele);
InitListener();
}
InitListener();
VLOG_SUCCESS("RequestFrameCallback time: " VPUBI64 ", id: %{public}u", delayTime, vsyncID);
return GSERROR_OK;
}

25
frameworks/vsync/src/vsync_manager.cpp
View File

@ -15,6 +15,8 @@
#include "vsync_manager.h"
#include <scoped_bytrace.h>
#include "vsync_callback_death_recipient.h"
#include "vsync_callback_proxy.h"
#include "vsync_log.h"
@ -94,6 +96,7 @@ GSError VsyncManager::ListenVsync(sptr<IVsyncCallback>& cb)
VLOGW("Failed to add death recipient");
}
ScopedBytrace bytrace(__func__);
std::lock_guard<std::mutex> lock(callbacksMutex_);
callbacks_.push_back(cb);
return GSERROR_OK;
@ -101,6 +104,8 @@ GSError VsyncManager::ListenVsync(sptr<IVsyncCallback>& cb)
GSError VsyncManager::RemoveVsync(sptr<IVsyncCallback>& callback)
{
ScopedBytrace bytrace(__func__);
std::lock_guard<std::mutex> lock(callbacksMutex_);
for (auto it = callbacks_.begin(); it != callbacks_.end(); it++) {
if (*it == callback) {
callbacks_.erase(it);
@ -120,16 +125,28 @@ GSError VsyncManager::GetVsyncFrequency(uint32_t &freq)
void VsyncManager::Callback(int64_t timestamp)
{
std::lock_guard<std::mutex> lock(callbacksMutex_);
using sptrIVsyncCallback = sptr<IVsyncCallback>;
std::list<sptrIVsyncCallback> okcbs;
for (const auto &cb : callbacks_) {
std::list<sptrIVsyncCallback> okcbs, calling;
{
ScopedBytrace bytrace("callback 1");
std::lock_guard<std::mutex> lock(callbacksMutex_);
calling = callbacks_;
}
{
ScopedBytrace bytrace("callback 2");
for (const auto &cb : calling) {
if (cb->OnVsync(timestamp) != GSERROR_BINDER) {
okcbs.push_back(cb);
}
}
}
{
ScopedBytrace bytrace("callback 3");
std::lock_guard<std::mutex> lock(callbacksMutex_);
callbacks_ = okcbs;
}
}
} // namespace Vsync
} // namespace OHOS