/* GDC -- D front-end for GCC
   Copyright (C) 2004 David Friedman
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.
 
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
 
   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/

module gcc.threadsem;
private import gcc.config;

version (GNU_Semaphore_POSIX)
{
    private import std.c.unix;
    struct Semaphore {
	sem_t sem;
	bool create() {  return sem_init(& sem, 0, 0) == 0; }
	void wait() { sem_wait(& sem); }
	void signal() { sem_post(& sem); }
	
    }
}
else version (GNU_Semaphore_Mach)
{
    private import std.c.mach.mach;
    struct Semaphore {
	semaphore_t sem;
	bool create() {
	    return semaphore_create(current_task(), & sem,
		SYNC_POLICY_FIFO, 0) == KERN_SUCCESS; }
	void wait() { semaphore_wait(sem); }
	void signal() { semaphore_signal(sem); }
    }
}
else version (GNU_Semaphore_SysV)
{
    // TODO
}
else version (GNU_Sempahore_Pthreads)
{
    // TODO
}
