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      1 //===-- tsan_interceptors_mac.cc ------------------------------------------===//
      2 //
      3 //                     The LLVM Compiler Infrastructure
      4 //
      5 // This file is distributed under the University of Illinois Open Source
      6 // License. See LICENSE.TXT for details.
      7 //
      8 //===----------------------------------------------------------------------===//
      9 //
     10 // This file is a part of ThreadSanitizer (TSan), a race detector.
     11 //
     12 // Mac-specific interceptors.
     13 //===----------------------------------------------------------------------===//
     14 
     15 #include "sanitizer_common/sanitizer_platform.h"
     16 #if SANITIZER_MAC
     17 
     18 #include "interception/interception.h"
     19 #include "tsan_interceptors.h"
     20 
     21 #include <libkern/OSAtomic.h>
     22 
     23 namespace __tsan {
     24 
     25 TSAN_INTERCEPTOR(void, OSSpinLockLock, volatile OSSpinLock *lock) {
     26   CHECK(!cur_thread()->is_dead);
     27   if (!cur_thread()->is_inited) {
     28     return REAL(OSSpinLockLock)(lock);
     29   }
     30   SCOPED_TSAN_INTERCEPTOR(OSSpinLockLock, lock);
     31   REAL(OSSpinLockLock)(lock);
     32   Acquire(thr, pc, (uptr)lock);
     33 }
     34 
     35 TSAN_INTERCEPTOR(bool, OSSpinLockTry, volatile OSSpinLock *lock) {
     36   CHECK(!cur_thread()->is_dead);
     37   if (!cur_thread()->is_inited) {
     38     return REAL(OSSpinLockTry)(lock);
     39   }
     40   SCOPED_TSAN_INTERCEPTOR(OSSpinLockTry, lock);
     41   bool result = REAL(OSSpinLockTry)(lock);
     42   if (result)
     43     Acquire(thr, pc, (uptr)lock);
     44   return result;
     45 }
     46 
     47 TSAN_INTERCEPTOR(void, OSSpinLockUnlock, volatile OSSpinLock *lock) {
     48   CHECK(!cur_thread()->is_dead);
     49   if (!cur_thread()->is_inited) {
     50     return REAL(OSSpinLockUnlock)(lock);
     51   }
     52   SCOPED_TSAN_INTERCEPTOR(OSSpinLockUnlock, lock);
     53   Release(thr, pc, (uptr)lock);
     54   REAL(OSSpinLockUnlock)(lock);
     55 }
     56 
     57 TSAN_INTERCEPTOR(void, os_lock_lock, void *lock) {
     58   CHECK(!cur_thread()->is_dead);
     59   if (!cur_thread()->is_inited) {
     60     return REAL(os_lock_lock)(lock);
     61   }
     62   SCOPED_TSAN_INTERCEPTOR(os_lock_lock, lock);
     63   REAL(os_lock_lock)(lock);
     64   Acquire(thr, pc, (uptr)lock);
     65 }
     66 
     67 TSAN_INTERCEPTOR(bool, os_lock_trylock, void *lock) {
     68   CHECK(!cur_thread()->is_dead);
     69   if (!cur_thread()->is_inited) {
     70     return REAL(os_lock_trylock)(lock);
     71   }
     72   SCOPED_TSAN_INTERCEPTOR(os_lock_trylock, lock);
     73   bool result = REAL(os_lock_trylock)(lock);
     74   if (result)
     75     Acquire(thr, pc, (uptr)lock);
     76   return result;
     77 }
     78 
     79 TSAN_INTERCEPTOR(void, os_lock_unlock, void *lock) {
     80   CHECK(!cur_thread()->is_dead);
     81   if (!cur_thread()->is_inited) {
     82     return REAL(os_lock_unlock)(lock);
     83   }
     84   SCOPED_TSAN_INTERCEPTOR(os_lock_unlock, lock);
     85   Release(thr, pc, (uptr)lock);
     86   REAL(os_lock_unlock)(lock);
     87 }
     88 
     89 }  // namespace __tsan
     90 
     91 #endif  // SANITIZER_MAC
     92