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-rw-r--r--include/libcamera/base/semaphore.h10
-rw-r--r--src/libcamera/base/semaphore.cpp4
2 files changed, 8 insertions, 6 deletions
diff --git a/include/libcamera/base/semaphore.h b/include/libcamera/base/semaphore.h
index c11e8dd1..f1052317 100644
--- a/include/libcamera/base/semaphore.h
+++ b/include/libcamera/base/semaphore.h
@@ -18,15 +18,15 @@ class Semaphore
public:
Semaphore(unsigned int n = 0);
- unsigned int available();
- void acquire(unsigned int n = 1);
- bool tryAcquire(unsigned int n = 1);
- void release(unsigned int n = 1);
+ unsigned int available() LIBCAMERA_TSA_EXCLUDES(mutex_);
+ void acquire(unsigned int n = 1) LIBCAMERA_TSA_EXCLUDES(mutex_);
+ bool tryAcquire(unsigned int n = 1) LIBCAMERA_TSA_EXCLUDES(mutex_);
+ void release(unsigned int n = 1) LIBCAMERA_TSA_EXCLUDES(mutex_);
private:
Mutex mutex_;
ConditionVariable cv_;
- unsigned int available_;
+ unsigned int available_ LIBCAMERA_TSA_GUARDED_BY(mutex_);
};
} /* namespace libcamera */
diff --git a/src/libcamera/base/semaphore.cpp b/src/libcamera/base/semaphore.cpp
index 4fe30293..6217e386 100644
--- a/src/libcamera/base/semaphore.cpp
+++ b/src/libcamera/base/semaphore.cpp
@@ -56,7 +56,9 @@ unsigned int Semaphore::available()
void Semaphore::acquire(unsigned int n)
{
MutexLocker locker(mutex_);
- cv_.wait(locker, [&] { return available_ >= n; });
+ cv_.wait(locker, [&]() LIBCAMERA_TSA_REQUIRES(mutex_) {
+ return available_ >= n;
+ });
available_ -= n;
}