From f1e5df1d266f70a508c7b520fd52feced8fbcf61 Mon Sep 17 00:00:00 2001
From: Patrick Williams <pdwilliams@google.com>
Date: Mon, 17 Oct 2022 21:37:42 +0000
Subject: SF: Trigger ANR when buffer cache is full

* Updates the transaction queue stall listener to take a string that
  contains the reason for hanging.
* Updates ClientCache::add to indicate whether or not a failure is due
  to the cache being full
* Calls the transaction queue stall listener when the ClientCache is
  full

Bug: 244218818
Test: presubmits
Change-Id: I5fdc9aef0f0a1601ace1c42cfac5024c3de8d299
---
 libs/gui/BLASTBufferQueue.cpp | 20 +++++++++++---------
 1 file changed, 11 insertions(+), 9 deletions(-)

(limited to 'libs/gui/BLASTBufferQueue.cpp')

diff --git a/libs/gui/BLASTBufferQueue.cpp b/libs/gui/BLASTBufferQueue.cpp
index 8b9a878598..fc8aff87af 100644
--- a/libs/gui/BLASTBufferQueue.cpp
+++ b/libs/gui/BLASTBufferQueue.cpp
@@ -167,14 +167,15 @@ BLASTBufferQueue::BLASTBufferQueue(const std::string& name, bool updateDestinati
     mNumFrameAvailable = 0;
 
     TransactionCompletedListener::getInstance()->addQueueStallListener(
-        [&]() {
-            std::function<void(bool)> callbackCopy;
-            {
-                std::unique_lock _lock{mMutex};
-                callbackCopy = mTransactionHangCallback;
-            }
-            if (callbackCopy) callbackCopy(true);
-        }, this);
+            [&](const std::string& reason) {
+                std::function<void(const std::string&)> callbackCopy;
+                {
+                    std::unique_lock _lock{mMutex};
+                    callbackCopy = mTransactionHangCallback;
+                }
+                if (callbackCopy) callbackCopy(reason);
+            },
+            this);
 
     BQA_LOGV("BLASTBufferQueue created");
 }
@@ -1112,7 +1113,8 @@ bool BLASTBufferQueue::isSameSurfaceControl(const sp<SurfaceControl>& surfaceCon
     return SurfaceControl::isSameSurface(mSurfaceControl, surfaceControl);
 }
 
-void BLASTBufferQueue::setTransactionHangCallback(std::function<void(bool)> callback) {
+void BLASTBufferQueue::setTransactionHangCallback(
+        std::function<void(const std::string&)> callback) {
     std::unique_lock _lock{mMutex};
     mTransactionHangCallback = callback;
 }
-- 
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