Add Fence::waitForever which logs a warning timeout, and use it

Bug: 7217641
Change-Id: If0c1a613ead307c4045a47824174bf40c72bc7d7

1 files changed, 7 insertions, 0 deletions

diff --git a/include/ui/Fence.h b/include/ui/Fence.h
index b516a22..a8460c2 100644
--- a/include/ui/Fence.h
+++ b/include/ui/Fence.h
@@ -62,6 +62,13 @@ public:
     // indefinitely for the fence to signal.
     int wait(unsigned int timeout);
 
+    // waitForever is a convenience function for waiting forever for a fence to
+    // signal (just like wait(TIMEOUT_NEVER)), but issuing an error to the
+    // system log and fence state to the kernel log if the wait lasts longer
+    // than warningTimeout. The logname argument should be a string identifying
+    // the caller and will be included in the log message.
+    int waitForever(unsigned int warningTimeout, const char* logname);
+
     // TIMEOUT_NEVER may be passed to the wait method to indicate that it
     // should wait indefinitely for the fence to signal.
     enum { TIMEOUT_NEVER = -1 };