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- /*
- * Copyright 2016 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #ifndef SkMSAN_DEFINED
- #define SkMSAN_DEFINED
- #include "include/core/SkTypes.h"
- #include <string.h>
- // Typically declared in LLVM's msan_interface.h. Easier for us to just re-declare.
- extern "C" {
- void __msan_check_mem_is_initialized(const volatile void*, size_t);
- void __msan_unpoison (const volatile void*, size_t);
- }
- // Code that requires initialized inputs can call this to make it clear that
- // the blame for use of uninitialized data belongs further up the call stack.
- static inline void sk_msan_assert_initialized(const void* begin, const void* end) {
- #if defined(__has_feature)
- #if __has_feature(memory_sanitizer)
- __msan_check_mem_is_initialized(begin, (const char*)end - (const char*)begin);
- #endif
- #endif
- }
- // Lie to MSAN that this range of memory is initialized.
- // This can hide serious problems if overused. Every use of this should refer to a bug.
- static inline void sk_msan_mark_initialized(const void* begin, const void* end, const char* skbug) {
- SkASSERT(skbug && 0 != strcmp(skbug, ""));
- #if defined(__has_feature)
- #if __has_feature(memory_sanitizer)
- __msan_unpoison(begin, (const char*)end - (const char*)begin);
- #endif
- #endif
- }
- #endif//SkMSAN_DEFINED
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