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