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47 lines
1.1 KiB
C
47 lines
1.1 KiB
C
/*-
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* See the file LICENSE for redistribution information.
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*
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* Copyright (c) 2001-2002
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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 revid[] = "$Id: os_id.c,v 1.2 2002/01/11 15:52:59 bostic Exp $";
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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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#include <unistd.h>
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#endif
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#include "db_int.h"
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/*
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* __os_id --
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* Return a 32-bit value identifying the current thread of control.
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*
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* PUBLIC: void __os_id __P((u_int32_t *));
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*/
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void
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__os_id(idp)
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u_int32_t *idp;
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{
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/*
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* By default, use the process ID.
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*
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* getpid() returns a pid_t which we convert to a u_int32_t. I have
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* not yet seen a system where a pid_t has 64-bits, but I'm sure they
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* exist. Since we're returning only the bottom 32-bits, you cannot
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* use the return of __os_id to reference a process (for example, you
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* cannot send a signal to the value returned by __os_id). To send a
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* signal to the current process, use raise(3) instead.
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*/
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#ifdef HAVE_VXWORKS
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*idp = taskIdSelf();
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#else
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*idp = getpid();
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#endif
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}
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