forked from enlightenment/efl
48 lines
1.3 KiB
Plaintext
48 lines
1.3 KiB
Plaintext
typedef struct _Eina_Barrier Eina_Barrier;
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/** @private */
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struct _Eina_Barrier
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{
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int needed; /**< The number of waiting threads that will cause the barrier to signal and reset. */
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int called; /**< The number of threads that are waiting on this barrier. */
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Eina_Lock cond_lock; /**< The lock for the barrier */
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Eina_Condition cond; /**< The condition variable for the barrier */
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};
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static inline Eina_Bool
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eina_barrier_new(Eina_Barrier *barrier, int needed)
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{
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barrier->needed = needed;
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barrier->called = 0;
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if (!eina_lock_new(&(barrier->cond_lock)))
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return EINA_FALSE;
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if (!eina_condition_new(&(barrier->cond), &(barrier->cond_lock)))
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return EINA_FALSE;
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return EINA_TRUE;
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}
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static inline void
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eina_barrier_free(Eina_Barrier *barrier)
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{
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eina_condition_free(&(barrier->cond));
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eina_lock_free(&(barrier->cond_lock));
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barrier->needed = 0;
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barrier->called = 0;
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}
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static inline Eina_Bool
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eina_barrier_wait(Eina_Barrier *barrier)
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{
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eina_lock_take(&(barrier->cond_lock));
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barrier->called++;
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if (barrier->called == barrier->needed)
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{
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barrier->called = 0;
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eina_condition_broadcast(&(barrier->cond));
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}
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else
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eina_condition_wait(&(barrier->cond));
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eina_lock_release(&(barrier->cond_lock));
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return EINA_TRUE;
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}
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