1 files changed, 94 insertions, 0 deletions
diff --git a/libs/hwui/tests/common/LeakChecker.cpp b/libs/hwui/tests/common/LeakChecker.cpp
new file mode 100644
index 000000000000..d935382cc9a4
--- /dev/null
+++ b/libs/hwui/tests/common/LeakChecker.cpp
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2016 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.
+ */
+
+#include "LeakChecker.h"
+
+#include "Caches.h"
+#include "TestUtils.h"
+
+#include <cstdio>
+#include <iostream>
+#include <memunreachable/memunreachable.h>
+#include <unistd.h>
+#include <unordered_set>
+
+using namespace std;
+
+namespace android {
+namespace uirenderer {
+namespace test {
+
+static void logUnreachable(initializer_list<UnreachableMemoryInfo> infolist) {
+    // merge them all
+    UnreachableMemoryInfo merged;
+    unordered_set<uintptr_t> addrs;
+    merged.allocation_bytes = 0;
+    merged.leak_bytes = 0;
+    merged.num_allocations = 0;
+    merged.num_leaks = 0;
+    for (auto& info : infolist) {
+        // We'll be a little hazzy about these ones and just hope the biggest
+        // is the most accurate
+        merged.allocation_bytes = max(merged.allocation_bytes, info.allocation_bytes);
+        merged.num_allocations = max(merged.num_allocations, info.num_allocations);
+        for (auto& leak : info.leaks) {
+             if (addrs.find(leak.begin) == addrs.end()) {
+                 merged.leaks.push_back(leak);
+                 merged.num_leaks++;
+                 merged.leak_bytes += leak.size;
+                 addrs.insert(leak.begin);
+             }
+        }
+    }
+
+    // Now log the result
+    if (merged.num_leaks) {
+        cout << endl << "Leaked memory!" << endl;
+        if (!merged.leaks[0].backtrace.num_frames) {
+            cout << "Re-run with 'setprop libc.debug.malloc.program hwui_unit_test'"
+                    << endl << "and 'setprop libc.debug.malloc.options backtrace=8'"
+                    << " to get backtraces" << endl;
+        }
+        cout << merged.ToString(false);
+    }
+}
+
+void LeakChecker::checkForLeaks() {
+    // TODO: Until we can shutdown the RT thread we need to do this in
+    // two passes as GetUnreachableMemory has limited insight into
+    // thread-local caches so some leaks will not be properly tagged as leaks
+    UnreachableMemoryInfo rtMemInfo;
+    TestUtils::runOnRenderThread([&rtMemInfo](renderthread::RenderThread& thread) {
+        if (Caches::hasInstance()) {
+            Caches::getInstance().tasks.stop();
+        }
+        // Check for leaks
+        if (!GetUnreachableMemory(rtMemInfo)) {
+            cerr << "Failed to get unreachable memory!" << endl;
+            return;
+        }
+    });
+    UnreachableMemoryInfo uiMemInfo;
+    if (!GetUnreachableMemory(uiMemInfo)) {
+        cerr << "Failed to get unreachable memory!" << endl;
+        return;
+    }
+    logUnreachable({rtMemInfo, uiMemInfo});
+}
+
+} /* namespace test */
+} /* namespace uirenderer */
+} /* namespace android */