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Diffstat (limited to 'src')
| -rw-r--r-- | src/guard.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/guard.cc b/src/guard.cc index f236053..1cbeb58 100644 --- a/src/guard.cc +++ b/src/guard.cc @@ -103,6 +103,10 @@ extern "C" int __cxa_guard_acquire(volatile int64_t *guard_object) // the lock at the same time. while (!__sync_bool_compare_and_swap_4(lock, 0, 1)) { + if (1 == ((*guard_object) >> 56)) + { + break; + } sched_yield(); } // We have to test the guard again, in case another thread has performed |