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