libgui: add EGL Image Tracking for debug

Track EGL images allocated by libgui to help debug memory leaks

Test: monkey
Bug: 137514000
Change-Id: I0b193c0fdb7a4c07d7c2e5d06063e3dc01b5a57b

1 files changed, 44 insertions, 0 deletions

diff --git a/libs/gui/include/gui/DebugEGLImageTracker.h b/libs/gui/include/gui/DebugEGLImageTracker.h
new file mode 100644
index 000000000..5d369c9a3
--- /dev/null
+++ b/libs/gui/include/gui/DebugEGLImageTracker.h
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <atomic>
+#include <mutex>
+#include <string>
+
+class DebugEGLImageTracker {
+public:
+    static DebugEGLImageTracker *getInstance();
+
+    virtual void create(const char *from) = 0;
+    virtual void destroy(const char *from) = 0;
+
+    virtual void dump(std::string &result) = 0;
+
+protected:
+    DebugEGLImageTracker() = default;
+    virtual ~DebugEGLImageTracker() = default;
+    DebugEGLImageTracker(const DebugEGLImageTracker &) = delete;
+
+    static std::mutex mInstanceLock;
+    static std::atomic<DebugEGLImageTracker *> mInstance;
+};
+
+#define DEBUG_EGL_IMAGE_TRACKER_CREATE() \
+    (DebugEGLImageTracker::getInstance()->create(__PRETTY_FUNCTION__))
+#define DEBUG_EGL_IMAGE_TRACKER_DESTROY() \
+    (DebugEGLImageTracker::getInstance()->destroy(__PRETTY_FUNCTION__))
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