[libcamera-devel,v3,08/12] android: camera_stream: Protect buffers initialization by mutex_
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Message ID 20211130155600.2203123-9-hiroh@chromium.org
State Superseded
Headers show
Series
  • Introduce clang thread safety annotations
Related show

Commit Message

Hirokazu Honda Nov. 30, 2021, 3:55 p.m. UTC 
The initialization on buffers_ in CameraStrean::configure() is not
protected by mutex_. It is no problem because configure() is not
invoked simultaneously while other functions are called. This
protects it to keep the thread safety consistency for buffers access.

Signed-off-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
---
 src/android/camera_stream.cpp | 1 +
 1 file changed, 1 insertion(+)

Patch
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diff --git a/src/android/camera_stream.cpp b/src/android/camera_stream.cpp
index 5a62b7cd..2181d094 100644
--- a/src/android/camera_stream.cpp
+++ b/src/android/camera_stream.cpp
@@ -125,6 +125,7 @@  int CameraStream::configure()
 		if (ret < 0)
 			return ret;
 
+		MutexLocker lock(*mutex_);
 		/* Save a pointer to the reserved frame buffers */
 		for (const auto &frameBuffer : allocator_->buffers(stream()))
 			buffers_.push_back(frameBuffer.get());