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/SurfaceComposerClient.cpp | 29 +++++++++++++++--------------
 1 file changed, 15 insertions(+), 14 deletions(-)

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

diff --git a/libs/gui/SurfaceComposerClient.cpp b/libs/gui/SurfaceComposerClient.cpp
index a5879a77e1..9efdd35a52 100644
--- a/libs/gui/SurfaceComposerClient.cpp
+++ b/libs/gui/SurfaceComposerClient.cpp
@@ -455,23 +455,24 @@ void TransactionCompletedListener::onTransactionCompleted(ListenerStats listener
     }
 }
 
-void TransactionCompletedListener::onTransactionQueueStalled() {
-      std::unordered_map<void*, std::function<void()>> callbackCopy;
-      {
-          std::scoped_lock<std::mutex> lock(mMutex);
-          callbackCopy = mQueueStallListeners;
-      }
-      for (auto const& it : callbackCopy) {
-          it.second();
-      }
-}
-
-void TransactionCompletedListener::addQueueStallListener(std::function<void()> stallListener,
-                                                         void* id) {
+void TransactionCompletedListener::onTransactionQueueStalled(const String8& reason) {
+    std::unordered_map<void*, std::function<void(const std::string&)>> callbackCopy;
+    {
+        std::scoped_lock<std::mutex> lock(mMutex);
+        callbackCopy = mQueueStallListeners;
+    }
+    for (auto const& it : callbackCopy) {
+        it.second(reason.c_str());
+    }
+}
+
+void TransactionCompletedListener::addQueueStallListener(
+        std::function<void(const std::string&)> stallListener, void* id) {
     std::scoped_lock<std::mutex> lock(mMutex);
     mQueueStallListeners[id] = stallListener;
 }
-void TransactionCompletedListener::removeQueueStallListener(void *id) {
+
+void TransactionCompletedListener::removeQueueStallListener(void* id) {
     std::scoped_lock<std::mutex> lock(mMutex);
     mQueueStallListeners.erase(id);
 }
-- 
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