Modernize TimeCheck
This replaces the usage of Thread, Mutex, Condition and KeyedVector
with their std:: counterparts.
We're also extracting the time thread from TimeCheck and adding a unit
test.
The logic in TimerThread now is easier to follow and it is more
evident that tasks would never be executed before their deadline
arrived. In the original code, this wasn't obvious.
Test: atest libmediautils_test
Bug: 188748333
Change-Id: Iac887e7d6e6758c0a0e5c56695e9671082e64b09
diff --git a/media/utils/include/mediautils/TimeCheck.h b/media/utils/include/mediautils/TimeCheck.h
index 5ba6d7c..2411f97 100644
--- a/media/utils/include/mediautils/TimeCheck.h
+++ b/media/utils/include/mediautils/TimeCheck.h
@@ -14,62 +14,33 @@
* limitations under the License.
*/
+#pragma once
-#ifndef ANDROID_TIME_CHECK_H
-#define ANDROID_TIME_CHECK_H
-
-#include <utils/KeyedVector.h>
-#include <utils/Thread.h>
#include <vector>
+#include <mediautils/TimerThread.h>
+
namespace android {
// A class monitoring execution time for a code block (scoped variable) and causing an assert
// if it exceeds a certain time
class TimeCheck {
-public:
-
+ public:
// The default timeout is chosen to be less than system server watchdog timeout
static constexpr uint32_t kDefaultTimeOutMs = 5000;
- TimeCheck(const char *tag, uint32_t timeoutMs = kDefaultTimeOutMs);
- ~TimeCheck();
- static void setAudioHalPids(const std::vector<pid_t>& pids);
- static std::vector<pid_t> getAudioHalPids();
+ TimeCheck(const char* tag, uint32_t timeoutMs = kDefaultTimeOutMs);
+ ~TimeCheck();
+ static void setAudioHalPids(const std::vector<pid_t>& pids);
+ static std::vector<pid_t> getAudioHalPids();
-private:
-
- class TimeCheckThread : public Thread {
- public:
-
- TimeCheckThread() {}
- virtual ~TimeCheckThread() override;
-
- nsecs_t startMonitoring(const char *tag, uint32_t timeoutMs);
- void stopMonitoring(nsecs_t endTimeNs);
-
- private:
-
- // RefBase
- virtual void onFirstRef() override { run("TimeCheckThread", PRIORITY_URGENT_AUDIO); }
-
- // Thread
- virtual bool threadLoop() override;
-
- Condition mCond;
- Mutex mMutex;
- // using the end time in ns as key is OK given the risk is low that two entries
- // are added in such a way that <add time> + <timeout> are the same for both.
- KeyedVector< nsecs_t, const char*> mMonitorRequests;
- };
-
- static sp<TimeCheckThread> getTimeCheckThread();
+ private:
+ static TimerThread* getTimeCheckThread();
static void accessAudioHalPids(std::vector<pid_t>* pids, bool update);
+ static void crash(const char* tag);
- const nsecs_t mEndTimeNs;
+ const TimerThread::Handle mTimerHandle;
};
-}; // namespace android
-
-#endif // ANDROID_TIME_CHECK_H
+}; // namespace android