mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-22 20:41:20 +00:00
140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/*
|
|
threading.c
|
|
|
|
Ruamoko threading support
|
|
|
|
Copyright (C) 2020 Bill Currie <bill@taniwha.org>
|
|
Copyright (C) 2021 Bill Currie <bill@taniwha.org>
|
|
|
|
Author: Bill Currie <bill@taniwha.org>
|
|
Date: 2020/03/01
|
|
|
|
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:
|
|
|
|
Free Software Foundation, Inc.
|
|
59 Temple Place - Suite 330
|
|
Boston, MA 02111-1307, USA
|
|
|
|
*/
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include <sys/time.h>
|
|
|
|
#include <errno.h>
|
|
#include <pthread.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <unistd.h>
|
|
|
|
#include "QF/dstring.h"
|
|
|
|
#include "ruamoko/qwaq/qwaq.h"
|
|
#include "ruamoko/qwaq/threading.h"
|
|
|
|
#define always_inline inline __attribute__((__always_inline__))
|
|
|
|
int
|
|
qwaq_pipe_acquire_string (qwaq_pipe_t *pipe)
|
|
{
|
|
int string_id = -1;
|
|
|
|
pthread_mutex_lock (&pipe->string_id_cond.mut);
|
|
while (RB_DATA_AVAILABLE (pipe->string_ids) < 1) {
|
|
pthread_cond_wait (&pipe->string_id_cond.rcond,
|
|
&pipe->string_id_cond.mut);
|
|
}
|
|
RB_READ_DATA (pipe->string_ids, &string_id, 1);
|
|
pthread_cond_broadcast (&pipe->string_id_cond.wcond);
|
|
pthread_mutex_unlock (&pipe->string_id_cond.mut);
|
|
return string_id;
|
|
}
|
|
|
|
void
|
|
qwaq_pipe_release_string (qwaq_pipe_t *pipe, int string_id)
|
|
{
|
|
pthread_mutex_lock (&pipe->string_id_cond.mut);
|
|
while (RB_SPACE_AVAILABLE (pipe->string_ids) < 1) {
|
|
pthread_cond_wait (&pipe->string_id_cond.wcond,
|
|
&pipe->string_id_cond.mut);
|
|
}
|
|
RB_WRITE_DATA (pipe->string_ids, &string_id, 1);
|
|
pthread_cond_broadcast (&pipe->string_id_cond.rcond);
|
|
pthread_mutex_unlock (&pipe->string_id_cond.mut);
|
|
}
|
|
|
|
void
|
|
qwaq_pipe_submit (qwaq_pipe_t *pipe, const int *cmd, unsigned len)
|
|
{
|
|
pthread_mutex_lock (&pipe->pipe_cond.mut);
|
|
while (RB_SPACE_AVAILABLE (pipe->pipe) < len) {
|
|
pthread_cond_wait (&pipe->pipe_cond.wcond,
|
|
&pipe->pipe_cond.mut);
|
|
}
|
|
RB_WRITE_DATA (pipe->pipe, cmd, len);
|
|
pthread_cond_broadcast (&pipe->pipe_cond.rcond);
|
|
pthread_mutex_unlock (&pipe->pipe_cond.mut);
|
|
}
|
|
|
|
void
|
|
qwaq_pipe_receive (qwaq_pipe_t *pipe, int *result, int cmd, unsigned len)
|
|
{
|
|
//Sys_Printf ("qwaq_wait_result: %d %d\n", cmd, len);
|
|
pthread_mutex_lock (&pipe->pipe_cond.mut);
|
|
while (RB_DATA_AVAILABLE (pipe->pipe) < len
|
|
|| *RB_PEEK_DATA (pipe->pipe, 0) != cmd) {
|
|
pthread_cond_wait (&pipe->pipe_cond.rcond,
|
|
&pipe->pipe_cond.mut);
|
|
}
|
|
RB_READ_DATA (pipe->pipe, result, len);
|
|
pthread_cond_broadcast (&pipe->pipe_cond.wcond);
|
|
pthread_mutex_unlock (&pipe->pipe_cond.mut);
|
|
//Sys_Printf ("qwaq_wait_result exit: %d %d\n", cmd, len);
|
|
}
|
|
|
|
void
|
|
qwaq_init_timeout (struct timespec *timeout, int64_t time)
|
|
{
|
|
#define SEC 1000000000L
|
|
struct timeval now;
|
|
gettimeofday(&now, 0);
|
|
timeout->tv_sec = now.tv_sec;
|
|
timeout->tv_nsec = now.tv_usec * 1000L + time;
|
|
if (timeout->tv_nsec >= SEC) {
|
|
timeout->tv_sec += timeout->tv_nsec / SEC;
|
|
timeout->tv_nsec %= SEC;
|
|
}
|
|
}
|
|
|
|
void
|
|
qwaq_init_cond (rwcond_t *cond)
|
|
{
|
|
pthread_cond_init (&cond->rcond, 0);
|
|
pthread_cond_init (&cond->wcond, 0);
|
|
pthread_mutex_init (&cond->mut, 0);
|
|
}
|
|
|
|
void
|
|
qwaq_init_pipe (qwaq_pipe_t *pipe)
|
|
{
|
|
qwaq_init_cond (&pipe->pipe_cond);
|
|
qwaq_init_cond (&pipe->string_id_cond);
|
|
|
|
for (int i = 0; i < STRING_ID_QUEUE_SIZE - 1; i++) {
|
|
RB_WRITE_DATA (pipe->string_ids, &i, 1);
|
|
pipe->strings[i].mem = &dstring_default_mem;
|
|
}
|
|
}
|