| /* |
| * 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 as SK_DEBUG vs. SK_RELEASE. |
| #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) |
| |
| #if defined(SK_BUILD_FOR_GOOGLE3) && !defined(SK_BUILD_FOR_WASM_IN_GOOGLE3) |
| extern "C" { |
| void __google_potentially_blocking_region_begin(void); |
| void __google_potentially_blocking_region_end (void); |
| } |
| #define SK_POTENTIALLY_BLOCKING_REGION_BEGIN __google_potentially_blocking_region_begin() |
| #define SK_POTENTIALLY_BLOCKING_REGION_END __google_potentially_blocking_region_end() |
| #else |
| #define SK_POTENTIALLY_BLOCKING_REGION_BEGIN |
| #define SK_POTENTIALLY_BLOCKING_REGION_END |
| #endif |
| |
| #endif // SkThreadAnnotations_DEFINED |