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[tsan] Publish the TSan external API in tsan_interface.h 

Let's make the TSan external API available and commented in the public header:

    void *__tsan_external_register_tag(const char *object_type);
    void __tsan_external_assign_tag(void *addr, void *tag);
    void __tsan_external_read(void *addr, void *caller_pc, void *tag);
    void __tsan_external_write(void *addr, void *caller_pc, void *tag);

Differential Revision: https://reviews.llvm.org/D32358

llvm-svn: 301003
This commit is contained in:
Kuba Mracek 2017-04-21 17:25:47 +00:00
parent 1061ccca8c
commit d1be869744
1 changed files with 15 additions and 0 deletions
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15
compiler-rt/include/sanitizer/tsan_interface.h
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@ -114,6 +114,21 @@ void __tsan_mutex_post_signal(void *addr, unsigned flags);
void __tsan_mutex_pre_divert(void *addr, unsigned flags);
void __tsan_mutex_post_divert(void *addr, unsigned flags);
// External race detection API.
// Can be used by non-instrumented libraries to detect when their objects are
// being used in an unsafe manner.
// - __tsan_external_read/__tsan_external_write annotates the logical reads
// and writes of the object at the specified address. 'caller_pc' should
// be the PC of the library user, which the library can obtain with e.g.
// `__builtin_return_address(0)`.
// - __tsan_external_register_tag registers a 'tag' with the specified name,
// which is later used in read/write annotations to denote the object type
// - __tsan_external_assign_tag can optionally mark a heap object with a tag
void *__tsan_external_register_tag(const char *object_type);
void __tsan_external_assign_tag(void *addr, void *tag);
void __tsan_external_read(void *addr, void *caller_pc, void *tag);
void __tsan_external_write(void *addr, void *caller_pc, void *tag);
#ifdef __cplusplus
} // extern "C"
#endif