chore: import upstream snapshot with attribution

2026-07-13 12:47:05 +08:00
commit 4f3b7da785
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+/* ******************************************************************************
+*
+*
+* This program and the accompanying materials are made available under the
+* terms of the Apache License, Version 2.0 which is available at
+* https://www.apache.org/licenses/LICENSE-2.0.
+*
+*  See the NOTICE file distributed with this work for additional
+*  information regarding copyright ownership.
+* 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.
+*
+* SPDX-License-Identifier: Apache-2.0
+******************************************************************************/
+
+//
+// Sanitizer utilities - platform independent
+//
+
+#include <legacy/NativeOps.h>
+
+// LSAN leak check trigger - only available when built with ASAN/LSAN
+#if defined(__has_feature)
+  #if __has_feature(address_sanitizer)
+    extern "C" void __lsan_do_leak_check(void);
+    #define HAS_LEAK_SANITIZER 1
+  #endif
+#elif defined(__SANITIZE_ADDRESS__)
+  // GCC doesn't have __has_feature, but defines __SANITIZE_ADDRESS__
+  extern "C" void __lsan_do_leak_check(void);
+  #define HAS_LEAK_SANITIZER 1
+#endif
+
+// MSAN doesn't have leak detection - it only tracks uninitialized memory
+// If built with MSAN, this will be a no-op
+
+/**
+ * Triggers leak checking and clears caches.
+ * This allows checking for leaks at any point during execution,
+ * not just at program exit.
+ *
+ * Always clears TAD and Shape caches before checking for leaks
+ * to prevent false positives from legitimate cached data.
+ *
+ * Cleanup sequence (matches MainApplication.java shutdown handler):
+ * 1. Clear TAD cache (frees cached TadPack objects)
+ * 2. Clear Shape cache (frees cached shape info)
+ * 3. Trigger leak check (if sanitizers are enabled)
+ *
+ * Safe to call from Java via JNI.
+ */
+SD_LIB_EXPORT void triggerLeakCheck() {
+    // not just when HAS_LEAK_SANITIZER is defined.
+    //
+    // WHY: Custom lifecycle tracking (TADCacheLifecycleTracker) is used
+    // even when building with MSan (Memory Sanitizer), which doesn't define
+    // HAS_LEAK_SANITIZER. But lifecycle tracking still needs caches cleared
+    // before reporting to avoid false positives.
+    //
+    // TAD and Shape caches contain legitimate data structures that persist
+    // across operations for performance. They are NOT memory leaks.
+    clearTADCache();
+    clearShapeCache();
+
+#ifdef HAS_LEAK_SANITIZER
+    // Additionally trigger sanitizer leak check if available
+    __lsan_do_leak_check();
+#else
+    // No sanitizer leak check, but cache clearing still happened above
+    // This ensures custom lifecycle tracking doesn't report false positives
+#endif
+}