/* * Copyright 2019 Google LLC * * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ #ifndef SkThreadAnnotations_DEFINED #define SkThreadAnnotations_DEFINED // The bulk of this code is cribbed from: // http://clang.llvm.org/docs/ThreadSafetyAnalysis.html #if defined(__clang__) && (!defined(SWIG)) #define SK_THREAD_ANNOTATION_ATTRIBUTE(x) __attribute__((x)) #else #define SK_THREAD_ANNOTATION_ATTRIBUTE(x) // no-op #endif #define SK_CAPABILITY(x) \ SK_THREAD_ANNOTATION_ATTRIBUTE(capability(x)) #define SK_SCOPED_CAPABILITY \ SK_THREAD_ANNOTATION_ATTRIBUTE(scoped_lockable) #define SK_GUARDED_BY(x) \ SK_THREAD_ANNOTATION_ATTRIBUTE(guarded_by(x)) #define SK_PT_GUARDED_BY(x) \ SK_THREAD_ANNOTATION_ATTRIBUTE(pt_guarded_by(x)) #define SK_ACQUIRED_BEFORE(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(acquired_before(__VA_ARGS__)) #define SK_ACQUIRED_AFTER(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(acquired_after(__VA_ARGS__)) #define SK_REQUIRES(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(requires_capability(__VA_ARGS__)) #define SK_REQUIRES_SHARED(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(requires_shared_capability(__VA_ARGS__)) #define SK_ACQUIRE(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(acquire_capability(__VA_ARGS__)) #define SK_ACQUIRE_SHARED(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(acquire_shared_capability(__VA_ARGS__)) // Would be SK_RELEASE, but that is already in use by SkPostConfig. #define SK_RELEASE_CAPABILITY(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(release_capability(__VA_ARGS__)) // For symmetry with SK_RELEASE_CAPABILITY. #define SK_RELEASE_SHARED_CAPABILITY(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(release_shared_capability(__VA_ARGS__)) #define SK_TRY_ACQUIRE(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(try_acquire_capability(__VA_ARGS__)) #define SK_TRY_ACQUIRE_SHARED(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(try_acquire_shared_capability(__VA_ARGS__)) #define SK_EXCLUDES(...) \ SK_THREAD_ANNOTATION_ATTRIBUTE(locks_excluded(__VA_ARGS__)) #define SK_ASSERT_CAPABILITY(x) \ SK_THREAD_ANNOTATION_ATTRIBUTE(assert_capability(x)) #define SK_ASSERT_SHARED_CAPABILITY(x) \ SK_THREAD_ANNOTATION_ATTRIBUTE(assert_shared_capability(x)) #define SK_RETURN_CAPABILITY(x) \ SK_THREAD_ANNOTATION_ATTRIBUTE(lock_returned(x)) #define SK_NO_THREAD_SAFETY_ANALYSIS \ SK_THREAD_ANNOTATION_ATTRIBUTE(no_thread_safety_analysis) #endif // SkThreadAnnotations_DEFINED