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/****************************************************************************
* *
* GNAT COMPILER COMPONENTS *
* *
* P T H R E A D *
* *
* C Implementation File *
* *
* Copyright (C) 2011, Free Software Foundation, Inc. *
* *
* GNAT is free software; you can redistribute it and/or modify it under *
* terms of the GNU General Public License as published by the Free Soft- *
* ware Foundation; either version 3, or (at your option) any later ver- *
* sion. GNAT is distributed in the hope that it will be useful, but WITH- *
* OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY *
* or FITNESS FOR A PARTICULAR PURPOSE. *
* *
* As a special exception under Section 7 of GPL version 3, you are granted *
* additional permissions described in the GCC Runtime Library Exception, *
* version 3.1, as published by the Free Software Foundation. *
* *
* You should have received a copy of the GNU General Public License and *
* a copy of the GCC Runtime Library Exception along with this program; *
* see the files COPYING3 and COPYING.RUNTIME respectively. If not, see *
* <http://www.gnu.org/licenses/>. *
* *
* GNAT was originally developed by the GNAT team at New York University. *
* Extensive contributions were provided by Ada Core Technologies Inc. *
* *
****************************************************************************/
/* This file provides utility functions to access the threads API */
#include "s-oscons.h"
#ifdef NEED_PTHREAD_CONDATTR_SETCLOCK
# include <pthread.h>
# include <time.h>
#ifndef _AIXVERSION_530
/* We use the same runtime library for AIX 5.2 and 5.3, but pthread_condattr_
* setclock exists only on the latter, so for the former provide a dummy
* implementation (declared below, weak symbol defined in init.c).
*
* Note: this means that under AIX 5.2 we'll be using CLOCK_MONOTONIC
* timestamps from clock_gettime() as arguments to pthread_cond_timedwait,
* which expects a CLOCK_REALTIME value, which is technically wrong, but
* inocuous in practice on that particular platform since both clocks happen
* to use close epochs.
*/
extern int pthread_condattr_setclock (pthread_condattr_t *attr, clockid_t cl);
#endif
int
__gnat_pthread_condattr_setup(pthread_condattr_t *attr) {
/*
* If using a clock other than CLOCK_REALTIME for the Ada Monotonic_Clock,
* the corresponding clock id must be set for condition variables.
*/
return pthread_condattr_setclock (attr, CLOCK_RT_Ada);
}
#else
int
__gnat_pthread_condattr_setup (void *attr) {
/* Dummy version for other platforms, which may or may not have pthread.h */
return 0;
}
#endif
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