| #ifndef TSAN_INTERCEPTORS_H |
| #define TSAN_INTERCEPTORS_H |
| |
| #include "sanitizer_common/sanitizer_stacktrace.h" |
| #include "tsan_rtl.h" |
| |
| namespace __tsan { |
| |
| class ScopedInterceptor { |
| public: |
| ScopedInterceptor(ThreadState *thr, const char *fname, uptr pc); |
| ~ScopedInterceptor(); |
| void DisableIgnores() { |
| if (UNLIKELY(ignoring_)) |
| DisableIgnoresImpl(); |
| } |
| void EnableIgnores() { |
| if (UNLIKELY(ignoring_)) |
| EnableIgnoresImpl(); |
| } |
| |
| private: |
| ThreadState *const thr_; |
| bool in_ignored_lib_; |
| bool ignoring_; |
| |
| void DisableIgnoresImpl(); |
| void EnableIgnoresImpl(); |
| }; |
| |
| LibIgnore *libignore(); |
| |
| #if !SANITIZER_GO |
| inline bool in_symbolizer() { |
| return UNLIKELY(cur_thread_init()->in_symbolizer); |
| } |
| #endif |
| |
| } // namespace __tsan |
| |
| #define SCOPED_INTERCEPTOR_RAW(func, ...) \ |
| ThreadState *thr = cur_thread_init(); \ |
| ScopedInterceptor si(thr, #func, GET_CALLER_PC()); \ |
| UNUSED const uptr pc = GET_CURRENT_PC(); |
| |
| #ifdef __powerpc64__ |
| // Debugging of crashes on powerpc after commit: |
| // c80604f7a3 ("tsan: remove real func check from interceptors") |
| // Somehow replacing if with DCHECK leads to strange failures in: |
| // SanitizerCommon-tsan-powerpc64le-Linux :: Linux/ptrace.cpp |
| // https://lab.llvm.org/buildbot/#/builders/105 |
| // https://lab.llvm.org/buildbot/#/builders/121 |
| // https://lab.llvm.org/buildbot/#/builders/57 |
| # define CHECK_REAL_FUNC(func) \ |
| if (REAL(func) == 0) { \ |
| Report("FATAL: ThreadSanitizer: failed to intercept %s\n", #func); \ |
| Die(); \ |
| } |
| #else |
| # define CHECK_REAL_FUNC(func) DCHECK(REAL(func)) |
| #endif |
| |
| #define SCOPED_TSAN_INTERCEPTOR(func, ...) \ |
| SCOPED_INTERCEPTOR_RAW(func, __VA_ARGS__); \ |
| CHECK_REAL_FUNC(func); \ |
| if (!thr->is_inited || thr->ignore_interceptors || thr->in_ignored_lib) \ |
| return REAL(func)(__VA_ARGS__); |
| |
| #define SCOPED_TSAN_INTERCEPTOR_USER_CALLBACK_START() \ |
| si.DisableIgnores(); |
| |
| #define SCOPED_TSAN_INTERCEPTOR_USER_CALLBACK_END() \ |
| si.EnableIgnores(); |
| |
| #define TSAN_INTERCEPTOR(ret, func, ...) INTERCEPTOR(ret, func, __VA_ARGS__) |
| |
| #if SANITIZER_NETBSD |
| # define TSAN_INTERCEPTOR_NETBSD_ALIAS(ret, func, ...) \ |
| TSAN_INTERCEPTOR(ret, __libc_##func, __VA_ARGS__) \ |
| ALIAS(WRAPPER_NAME(pthread_##func)); |
| # define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR(ret, func, ...) \ |
| TSAN_INTERCEPTOR(ret, __libc_thr_##func, __VA_ARGS__) \ |
| ALIAS(WRAPPER_NAME(pthread_##func)); |
| # define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR2(ret, func, func2, ...) \ |
| TSAN_INTERCEPTOR(ret, __libc_thr_##func, __VA_ARGS__) \ |
| ALIAS(WRAPPER_NAME(pthread_##func2)); |
| #else |
| # define TSAN_INTERCEPTOR_NETBSD_ALIAS(ret, func, ...) |
| # define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR(ret, func, ...) |
| # define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR2(ret, func, func2, ...) |
| #endif |
| |
| #endif // TSAN_INTERCEPTORS_H |