Index: webrtc/base/thread_annotations_unittest.cc |
diff --git a/webrtc/base/thread_annotations_unittest.cc b/webrtc/base/thread_annotations_unittest.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..69938eff8669f8243037d0adb269148b65bdf40f |
--- /dev/null |
+++ b/webrtc/base/thread_annotations_unittest.cc |
@@ -0,0 +1,151 @@ |
+/* |
+ * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved. |
+ * |
+ * Use of this source code is governed by a BSD-style license |
+ * that can be found in the LICENSE file in the root of the source |
+ * tree. An additional intellectual property rights grant can be found |
+ * in the file PATENTS. All contributing project authors may |
+ * be found in the AUTHORS file in the root of the source tree. |
+ */ |
+ |
+#include "webrtc/base/thread_annotations.h" |
+#include "webrtc/test/gtest.h" |
+ |
+namespace { |
+ |
+class LOCKABLE Lock { |
+ public: |
+ void EnterWrite() const EXCLUSIVE_LOCK_FUNCTION() {} |
+ void EnterRead() const SHARED_LOCK_FUNCTION() {} |
+ bool TryEnterWrite() const EXCLUSIVE_TRYLOCK_FUNCTION(true) { return true; } |
+ bool TryEnterRead() const SHARED_TRYLOCK_FUNCTION(true) { return true; } |
+ void Leave() const UNLOCK_FUNCTION() {} |
+}; |
+ |
+class SCOPED_LOCKABLE ScopeLock { |
+ public: |
+ explicit ScopeLock(const Lock& lock) EXCLUSIVE_LOCK_FUNCTION(lock) {} |
+ ~ScopeLock() UNLOCK_FUNCTION() {} |
+}; |
+ |
+class ThreadSafe { |
+ public: |
+ ThreadSafe() { |
+ pt_protected_by_lock_ = new int; |
+ pt_protected_by_anything_ = new int; |
+ } |
+ |
+ ~ThreadSafe() { |
+ delete pt_protected_by_lock_; |
+ delete pt_protected_by_anything_; |
+ } |
+ |
+ void LockInOrder() { |
+ anylock_.EnterWrite(); |
+ lock_.EnterWrite(); |
+ pt_lock_.EnterWrite(); |
+ |
+ pt_lock_.Leave(); |
+ lock_.Leave(); |
+ anylock_.Leave(); |
+ } |
+ |
+ void UnprotectedFunction() LOCKS_EXCLUDED(anylock_, lock_, pt_lock_) { |
+ // Can access unprotected Value. |
+ unprotected_ = 15; |
+ // Can access pointers themself, but not data they point to. |
+ int* tmp = pt_protected_by_lock_; |
+ pt_protected_by_lock_ = pt_protected_by_anything_; |
+ pt_protected_by_anything_ = tmp; |
+ } |
+ |
+ void ReadProtected() { |
+ lock_.EnterRead(); |
+ unprotected_ = protected_by_anything_; |
+ unprotected_ = protected_by_lock_; |
+ lock_.Leave(); |
+ |
+ if (pt_lock_.TryEnterRead()) { |
+ unprotected_ = *pt_protected_by_anything_; |
+ unprotected_ = *pt_protected_by_lock_; |
+ pt_lock_.Leave(); |
+ } |
+ |
+ anylock_.EnterRead(); |
+ unprotected_ = protected_by_anything_; |
+ unprotected_ = *pt_protected_by_anything_; |
+ anylock_.Leave(); |
+ } |
+ |
+ void WriteProtected() { |
+ lock_.EnterWrite(); |
+ protected_by_anything_ = unprotected_; |
+ protected_by_lock_ = unprotected_; |
+ lock_.Leave(); |
+ |
+ if (pt_lock_.TryEnterWrite()) { |
+ *pt_protected_by_anything_ = unprotected_; |
+ *pt_protected_by_lock_ = unprotected_; |
+ pt_lock_.Leave(); |
+ } |
+ |
+ anylock_.EnterWrite(); |
+ protected_by_anything_ = unprotected_; |
+ *pt_protected_by_anything_ = unprotected_; |
+ anylock_.Leave(); |
+ } |
+ |
+ void CallReadProtectedFunction() { |
+ lock_.EnterRead(); |
+ pt_lock_.EnterRead(); |
+ ReadProtectedFunction(); |
+ pt_lock_.Leave(); |
+ lock_.Leave(); |
+ } |
+ |
+ void CallWriteProtectedFunction() { |
+ ScopeLock scope_lock(GetLock()); |
+ ScopeLock pt_scope_lock(pt_lock_); |
+ WriteProtectedFunction(); |
+ } |
+ |
+ private: |
+ void ReadProtectedFunction() SHARED_LOCKS_REQUIRED(lock_, pt_lock_) { |
+ unprotected_ = protected_by_lock_; |
+ unprotected_ = *pt_protected_by_lock_; |
+ } |
+ |
+ void WriteProtectedFunction() EXCLUSIVE_LOCKS_REQUIRED(lock_, pt_lock_) { |
+ int x = protected_by_lock_; |
+ *pt_protected_by_lock_ = x; |
+ protected_by_lock_ = unprotected_; |
+ } |
+ |
+ const Lock& GetLock() LOCK_RETURNED(lock_) { return lock_; } |
+ |
+ Lock anylock_ ACQUIRED_BEFORE(lock_); |
+ Lock lock_; |
+ Lock pt_lock_ ACQUIRED_AFTER(lock_); |
+ |
+ int unprotected_ = 0; |
+ |
+ int protected_by_lock_ GUARDED_BY(lock_) = 0; |
+ int protected_by_anything_ GUARDED_VAR = 0; |
+ |
+ int* pt_protected_by_lock_ PT_GUARDED_BY(pt_lock_); |
+ int* pt_protected_by_anything_ PT_GUARDED_VAR; |
+}; |
+ |
+} // namespace |
+ |
+TEST(ThreadAnnotationsTest, Test) { |
+ // This test ensure thread annotations doesn't break compilation. |
+ // Thus no run-time expectations. |
+ ThreadSafe t; |
+ t.LockInOrder(); |
+ t.UnprotectedFunction(); |
+ t.ReadProtected(); |
+ t.WriteProtected(); |
+ t.CallReadProtectedFunction(); |
+ t.CallWriteProtectedFunction(); |
+} |