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73 lines
1.5 KiB
73 lines
1.5 KiB
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 1999
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* Sleepycat Software. All rights reserved.
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*/
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#include "db_config.h"
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#ifndef lint
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static const char sccsid[] = "@(#)mutex.c 11.1 (Sleepycat) 7/25/99";
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#endif /* not lint */
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#ifndef NO_SYSTEM_INCLUDES
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#include <sys/types.h>
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#endif
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#include "db_int.h"
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/*
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* CDB___db_mutex_alloc --
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* Allocate and initialize a mutex.
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*
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* PUBLIC: int CDB___db_mutex_alloc __P((DB_ENV *, REGINFO *, MUTEX **));
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*/
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int
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CDB___db_mutex_alloc(dbenv, infop, storep)
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DB_ENV *dbenv;
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REGINFO *infop;
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MUTEX **storep;
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{
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int ret;
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/*
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* If the architecture supports mutex in heap memory, simply
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* use that memory. If it doesn't, we have to allocate space
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* in the region.
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*/
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#ifdef MUTEX_NO_MALLOC_LOCKS
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R_LOCK(dbenv, infop);
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ret = CDB___db_shalloc(infop->addr, sizeof(MUTEX), MUTEX_ALIGN, storep);
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R_UNLOCK(dbenv, infop);
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#else
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COMPQUIET(dbenv, NULL);
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COMPQUIET(infop, NULL);
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ret = CDB___os_calloc(1, sizeof(MUTEX), storep);
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#endif
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return (ret);
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}
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/*
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* CDB___db_mutex_free --
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* Free a mutex.
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*
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* PUBLIC: void CDB___db_mutex_free __P((DB_ENV *, REGINFO *, MUTEX *));
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*/
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void
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CDB___db_mutex_free(dbenv, infop, mutexp)
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DB_ENV *dbenv;
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REGINFO *infop;
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MUTEX *mutexp;
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{
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#ifdef MUTEX_NO_MALLOC_LOCKS
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R_LOCK(dbenv, infop);
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CDB___db_shalloc_free(infop->addr, mutexp);
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R_UNLOCK(dbenv, infop);
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#else
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COMPQUIET(dbenv, NULL);
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COMPQUIET(infop, NULL);
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CDB___os_free(mutexp, sizeof(*mutexp));
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#endif
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}
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