1 /* fake_mutex.h -*-C++-*-
3 *************************************************************************
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49 **************************************************************************
51 * Cilkscreen fake mutexes are provided to indicate to the Cilkscreen race
52 * detector that a race should be ignored.
54 * NOTE: This class does not provide mutual exclusion. You should use the
55 * mutual exclusion constructs provided by TBB or your operating system to
56 * protect against real data races.
59 #ifndef FAKE_MUTEX_H_INCLUDED
60 #define FAKE_MUTEX_H_INCLUDED
62 #include <cilktools/cilkscreen.h>
69 fake_mutex() : locked(false)
75 __CILKRTS_ASSERT(! locked
);
78 // Wait until mutex is available, then enter
81 __cilkscreen_acquire_lock(&locked
);
82 __CILKRTS_ASSERT(! locked
);
86 // A fake mutex is always available
87 bool try_lock() { lock(); return true; }
92 __CILKRTS_ASSERT(locked
);
94 __cilkscreen_release_lock(&locked
);
103 #endif // FAKE_MUTEX_H_INCLUDED