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#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_ = false;
bool in_blocking_func_ = false;
bool ignoring_ = false;
void DisableIgnoresImpl();
void EnableIgnoresImpl();
};
struct TsanInterceptorContext {
ThreadState *thr;
const uptr pc;
};
LibIgnore *libignore();
#if !SANITIZER_GO
inline bool in_symbolizer() {
return UNLIKELY(cur_thread_init()->in_symbolizer);
}
#endif
inline bool MustIgnoreInterceptor(ThreadState *thr) {
return !thr->is_inited || thr->ignore_interceptors || thr->in_ignored_lib;
}
} // 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 (MustIgnoreInterceptor(thr)) \
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_FREEBSD
# define TSAN_INTERCEPTOR_FREEBSD_ALIAS(ret, func, ...) \
TSAN_INTERCEPTOR(ret, _pthread_##func, __VA_ARGS__) \
ALIAS(WRAP(pthread_##func));
#else
# define TSAN_INTERCEPTOR_FREEBSD_ALIAS(ret, func, ...)
#endif
#if SANITIZER_NETBSD
# define TSAN_INTERCEPTOR_NETBSD_ALIAS(ret, func, ...) \
TSAN_INTERCEPTOR(ret, __libc_##func, __VA_ARGS__) \
ALIAS(WRAP(pthread_##func));
# define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR(ret, func, ...) \
TSAN_INTERCEPTOR(ret, __libc_thr_##func, __VA_ARGS__) \
ALIAS(WRAP(pthread_##func));
# define TSAN_INTERCEPTOR_NETBSD_ALIAS_THR2(ret, func, func2, ...) \
TSAN_INTERCEPTOR(ret, __libc_thr_##func, __VA_ARGS__) \
ALIAS(WRAP(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
#define COMMON_INTERCEPT_FUNCTION(name) INTERCEPT_FUNCTION(name)
#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED \
(!cur_thread_init()->is_inited)
#define COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, size) \
MemoryAccessRange(((TsanInterceptorContext *)ctx)->thr, \
((TsanInterceptorContext *)ctx)->pc, (uptr)ptr, size, \
true)
#define COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, size) \
MemoryAccessRange(((TsanInterceptorContext *) ctx)->thr, \
((TsanInterceptorContext *) ctx)->pc, (uptr) ptr, size, \
false)
#define COMMON_INTERCEPTOR_ENTER(ctx, func, ...) \
SCOPED_TSAN_INTERCEPTOR(func, __VA_ARGS__); \
TsanInterceptorContext _ctx = {thr, pc}; \
ctx = (void *)&_ctx; \
(void)ctx;
#endif // TSAN_INTERCEPTORS_H
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