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/****************************************************************
* *
* Copyright (c) 2014-2015 Fidelity National Information *
* Services, Inc. and/or its subsidiaries. All rights reserved. *
* *
* This source code contains the intellectual property *
* of its copyright holder(s), and is made available *
* under a license. If you do not know the terms of *
* the license, please stop and do not read further. *
* *
****************************************************************/
#include "mdef.h"
#ifdef DEBUG
#include "gtm_unistd.h" /* for "getpid" */
#endif
#include "interlock.h"
GBLREF volatile int4 fast_lock_count; /* Stop interrupts while we have our parts exposed */
GBLREF uint4 process_id;
/* Release latch specified by argument */
void rel_latch(sm_global_latch_ptr_t latch)
{
++fast_lock_count; /* Disable interrupts (i.e. wcs_stale) for duration to avoid potential deadlocks */
assert(process_id == getpid()); /* make sure "process_id" global variable is reliable (used below in RELEASE_SWAPLOCK) */
RELEASE_SWAPLOCK(latch);
--fast_lock_count;
assert(0 <= fast_lock_count);
}
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