Reland "RTM must to acquire lock before called IsMergedUnsafe (#28514)"
This reverts commit bebc83c80c638ca3fad5f51122527ace660a9c7c.
diff --git a/fml/raster_thread_merger.cc b/fml/raster_thread_merger.cc
index 6110e68..88b33dc 100644
--- a/fml/raster_thread_merger.cc
+++ b/fml/raster_thread_merger.cc
@@ -91,7 +91,9 @@
return MessageLoop::GetCurrentTaskQueueId() == platform_queue_id_;
}
-bool RasterThreadMerger::IsOnRasterizingThread() const {
+bool RasterThreadMerger::IsOnRasterizingThread() {
+ std::scoped_lock lock(mutex_);
+
if (IsMergedUnSafe()) {
return IsOnPlatformThread();
} else {
diff --git a/fml/raster_thread_merger.h b/fml/raster_thread_merger.h
index d3babbf..3ad4a4e 100644
--- a/fml/raster_thread_merger.h
+++ b/fml/raster_thread_merger.h
@@ -89,7 +89,7 @@
// Returns true if the current thread owns rasterizing.
// When the threads are merged, platform thread owns rasterizing.
// When un-merged, raster thread owns rasterizing.
- bool IsOnRasterizingThread() const;
+ bool IsOnRasterizingThread();
// Returns true if the current thread is the platform thread.
bool IsOnPlatformThread() const;