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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,121 @@ | ||
| //===-- tsan_interface.h ----------------------------------------*- C++ -*-===// | ||
| // | ||
| // The LLVM Compiler Infrastructure | ||
| // | ||
| // This file is distributed under the University of Illinois Open Source | ||
| // License. See LICENSE.TXT for details. | ||
| // | ||
| //===----------------------------------------------------------------------===// | ||
| // | ||
| // This file is a part of ThreadSanitizer (TSan), a race detector. | ||
| // | ||
| // Public interface header for TSan. | ||
| //===----------------------------------------------------------------------===// | ||
| #ifndef SANITIZER_TSAN_INTERFACE_H | ||
| #define SANITIZER_TSAN_INTERFACE_H | ||
|
|
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| #include <sanitizer/common_interface_defs.h> | ||
|
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| #ifdef __cplusplus | ||
| extern "C" { | ||
| #endif | ||
|
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| // __tsan_release establishes a happens-before relation with a preceding | ||
| // __tsan_acquire on the same address. | ||
| void __tsan_acquire(void *addr); | ||
| void __tsan_release(void *addr); | ||
|
|
||
| // Annotations for custom mutexes. | ||
| // The annotations allow to get better reports (with sets of locked mutexes), | ||
| // detect more types of bugs (e.g. mutex misuses, races between lock/unlock and | ||
| // destruction and potential deadlocks) and improve precision and performance | ||
| // (by ignoring individual atomic operations in mutex code). However, the | ||
| // downside is that annotated mutex code itself is not checked for correctness. | ||
|
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| // Mutex creation flags are passed to __tsan_mutex_create annotation. | ||
| // If mutex has no constructor and __tsan_mutex_create is not called, | ||
| // the flags may be passed to __tsan_mutex_pre_lock/__tsan_mutex_post_lock | ||
| // annotations. | ||
|
|
||
| // Mutex has static storage duration and no-op constructor and destructor. | ||
| // This effectively makes tsan ignore destroy annotation. | ||
| const unsigned __tsan_mutex_linker_init = 1 << 0; | ||
| // Mutex is write reentrant. | ||
| const unsigned __tsan_mutex_write_reentrant = 1 << 1; | ||
| // Mutex is read reentrant. | ||
| const unsigned __tsan_mutex_read_reentrant = 1 << 2; | ||
|
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| // Mutex operation flags: | ||
|
|
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| // Denotes read lock operation. | ||
| const unsigned __tsan_mutex_read_lock = 1 << 3; | ||
| // Denotes try lock operation. | ||
| const unsigned __tsan_mutex_try_lock = 1 << 4; | ||
| // Denotes that a try lock operation has failed to acquire the mutex. | ||
| const unsigned __tsan_mutex_try_lock_failed = 1 << 5; | ||
| // Denotes that the lock operation acquires multiple recursion levels. | ||
| // Number of levels is passed in recursion parameter. | ||
| // This is useful for annotation of e.g. Java builtin monitors, | ||
| // for which wait operation releases all recursive acquisitions of the mutex. | ||
| const unsigned __tsan_mutex_recursive_lock = 1 << 6; | ||
| // Denotes that the unlock operation releases all recursion levels. | ||
| // Number of released levels is returned and later must be passed to | ||
| // the corresponding __tsan_mutex_post_lock annotation. | ||
| const unsigned __tsan_mutex_recursive_unlock = 1 << 7; | ||
|
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| // Annotate creation of a mutex. | ||
| // Supported flags: mutex creation flags. | ||
| void __tsan_mutex_create(void *addr, unsigned flags); | ||
|
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| // Annotate destruction of a mutex. | ||
| // Supported flags: none. | ||
| void __tsan_mutex_destroy(void *addr, unsigned flags); | ||
|
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| // Annotate start of lock operation. | ||
| // Supported flags: | ||
| // - __tsan_mutex_read_lock | ||
| // - __tsan_mutex_try_lock | ||
| // - all mutex creation flags | ||
| void __tsan_mutex_pre_lock(void *addr, unsigned flags); | ||
|
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| // Annotate end of lock operation. | ||
| // Supported flags: | ||
| // - __tsan_mutex_read_lock (must match __tsan_mutex_pre_lock) | ||
| // - __tsan_mutex_try_lock (must match __tsan_mutex_pre_lock) | ||
| // - __tsan_mutex_try_lock_failed | ||
| // - __tsan_mutex_recursive_lock | ||
| // - all mutex creation flags | ||
| void __tsan_mutex_post_lock(void *addr, unsigned flags, int recursion); | ||
|
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| // Annotate start of unlock operation. | ||
| // Supported flags: | ||
| // - __tsan_mutex_read_lock | ||
| // - __tsan_mutex_recursive_unlock | ||
| int __tsan_mutex_pre_unlock(void *addr, unsigned flags); | ||
|
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| // Annotate end of unlock operation. | ||
| // Supported flags: | ||
| // - __tsan_mutex_read_lock (must match __tsan_mutex_pre_unlock) | ||
| void __tsan_mutex_post_unlock(void *addr, unsigned flags); | ||
|
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| // Annotate start/end of notify/signal/broadcast operation. | ||
| // Supported flags: none. | ||
| void __tsan_mutex_pre_signal(void *addr, unsigned flags); | ||
| void __tsan_mutex_post_signal(void *addr, unsigned flags); | ||
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| // Annotate start/end of a region of code where lock/unlock/signal operation | ||
| // diverts to do something else unrelated to the mutex. This can be used to | ||
| // annotate, for example, calls into cooperative scheduler or contention | ||
| // profiling code. | ||
| // These annotations must be called only from within | ||
| // __tsan_mutex_pre/post_lock, __tsan_mutex_pre/post_unlock, | ||
| // __tsan_mutex_pre/post_signal regions. | ||
| // Supported flags: none. | ||
| void __tsan_mutex_pre_divert(void *addr, unsigned flags); | ||
| void __tsan_mutex_post_divert(void *addr, unsigned flags); | ||
|
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| #ifdef __cplusplus | ||
| } // extern "C" | ||
| #endif | ||
|
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| #endif // SANITIZER_TSAN_INTERFACE_H |
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