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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2001, 2012 Oracle and/or its affiliates. All rights reserved.
*
* $Id$
*/
#include "db_config.h"
#include "db_int.h"
/*
* __os_id --
* Return the current process ID.
*
* PUBLIC: void __os_id __P((DB_ENV *, pid_t *, db_threadid_t*));
*/
void
__os_id(dbenv, pidp, tidp)
DB_ENV *dbenv;
pid_t *pidp;
db_threadid_t *tidp;
{
/*
* We can't depend on dbenv not being NULL, this routine is called
* from places where there's no DB_ENV handle.
*
* We cache the pid in the ENV handle, getting the process ID is a
* fairly slow call on lots of systems.
*/
if (pidp != NULL) {
if (dbenv == NULL) {
#if defined(HAVE_VXWORKS)
*pidp = taskIdSelf();
#else
*pidp = getpid();
#endif
} else
*pidp = dbenv->env->pid_cache;
}
/*
* When building on MinGW, we define both HAVE_PTHREAD_SELF and DB_WIN32,
* and we are using pthreads instead of Windows threads implementation.
* So here, we need to check the thread implementations before checking
* the platform.
*/
if (tidp != NULL) {
#if defined(HAVE_PTHREAD_SELF)
*tidp = pthread_self();
#elif defined(HAVE_MUTEX_UI_THREADS)
*tidp = thr_self();
#elif defined(DB_WIN32)
*tidp = GetCurrentThreadId();
#else
/*
* Default to just getpid.
*/
DB_THREADID_INIT(*tidp);
#endif
}
}
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