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Viewing changes to storage/innobase/include/sync0sync.ic

  • Committer: Brian Aker
  • Date: 2008-11-04 15:39:09 UTC
  • mfrom: (575.1.2 devel)
  • Revision ID: brian@tangent.org-20081104153909-c72hn65udxs1ccal
Merge of Monty's work

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storage/innobase/include/sync0sync.ic
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/**********************************************************************
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Sets the waiters field in a mutex. */
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UNIV_INTERN
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void
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mutex_set_waiters(
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/*==============*/
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Reserves a mutex for the current thread. If the mutex is reserved, the
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function spins a preset time (controlled by SYNC_SPIN_ROUNDS) waiting
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for the mutex before suspending the thread. */
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UNIV_INTERN
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void
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mutex_spin_wait(
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/*============*/
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#ifdef UNIV_SYNC_DEBUG
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/**********************************************************************
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Sets the debug information for a reserved mutex. */
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UNIV_INTERN
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void
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mutex_set_debug_info(
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/*=================*/
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#endif /* UNIV_SYNC_DEBUG */
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/**********************************************************************
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Releases the threads waiting in the primary wait array for this mutex. */
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UNIV_INTERN
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void
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mutex_signal_object(
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/*================*/
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{
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        ut_ad(mutex_own(mutex));
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        ut_d(mutex->thread_id = ULINT_UNDEFINED);
 
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        ut_d(mutex->thread_id = (os_thread_id_t) ULINT_UNDEFINED);
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#ifdef UNIV_SYNC_DEBUG
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        sync_thread_reset_level(mutex);
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        perform the read first, which could leave a waiting
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        thread hanging indefinitely.
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        Our current solution call every 10 seconds
 
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        Our current solution call every second
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        sync_arr_wake_threads_if_sema_free()
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        to wake up possible hanging threads if
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        they are missed in mutex_signal_object. */