mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-15 01:11:27 +00:00
e942fe6528
The queues in the curses resources struct have been cleaned up and the threading support code (including for the queues (pipes, really)) has been moved to its own file. The input test app currently just prints the devices and the events as they come in, but demonstrates the new input system working in a separate thread (though it is currently in with the curses thread).
140 lines
3.7 KiB
C
140 lines
3.7 KiB
C
/*
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threading.c
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Ruamoko threading support
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Copyright (C) 2020 Bill Currie <bill@taniwha.org>
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Copyright (C) 2021 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2020/03/01
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <sys/time.h>
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#include <errno.h>
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#include <pthread.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include "QF/dstring.h"
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#include "ruamoko/qwaq/qwaq.h"
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#include "ruamoko/qwaq/threading.h"
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#define always_inline inline __attribute__((__always_inline__))
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int
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qwaq_pipe_acquire_string (qwaq_pipe_t *pipe)
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{
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int string_id = -1;
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pthread_mutex_lock (&pipe->string_id_cond.mut);
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while (RB_DATA_AVAILABLE (pipe->string_ids) < 1) {
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pthread_cond_wait (&pipe->string_id_cond.rcond,
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&pipe->string_id_cond.mut);
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}
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RB_READ_DATA (pipe->string_ids, &string_id, 1);
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pthread_cond_broadcast (&pipe->string_id_cond.wcond);
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pthread_mutex_unlock (&pipe->string_id_cond.mut);
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return string_id;
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}
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void
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qwaq_pipe_release_string (qwaq_pipe_t *pipe, int string_id)
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{
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pthread_mutex_lock (&pipe->string_id_cond.mut);
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while (RB_SPACE_AVAILABLE (pipe->string_ids) < 1) {
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pthread_cond_wait (&pipe->string_id_cond.wcond,
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&pipe->string_id_cond.mut);
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}
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RB_WRITE_DATA (pipe->string_ids, &string_id, 1);
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pthread_cond_broadcast (&pipe->string_id_cond.rcond);
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pthread_mutex_unlock (&pipe->string_id_cond.mut);
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}
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void
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qwaq_pipe_submit (qwaq_pipe_t *pipe, const int *cmd, unsigned len)
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{
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pthread_mutex_lock (&pipe->pipe_cond.mut);
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while (RB_SPACE_AVAILABLE (pipe->pipe) < len) {
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pthread_cond_wait (&pipe->pipe_cond.wcond,
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&pipe->pipe_cond.mut);
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}
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RB_WRITE_DATA (pipe->pipe, cmd, len);
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pthread_cond_broadcast (&pipe->pipe_cond.rcond);
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pthread_mutex_unlock (&pipe->pipe_cond.mut);
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}
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void
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qwaq_pipe_receive (qwaq_pipe_t *pipe, int *result, int cmd, unsigned len)
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{
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Sys_Printf ("qwaq_wait_result: %d %d\n", cmd, len);
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pthread_mutex_lock (&pipe->pipe_cond.mut);
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while (RB_DATA_AVAILABLE (pipe->pipe) < len
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|| *RB_PEEK_DATA (pipe->pipe, 0) != cmd) {
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pthread_cond_wait (&pipe->pipe_cond.rcond,
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&pipe->pipe_cond.mut);
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}
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RB_READ_DATA (pipe->pipe, result, len);
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pthread_cond_broadcast (&pipe->pipe_cond.wcond);
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pthread_mutex_unlock (&pipe->pipe_cond.mut);
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Sys_Printf ("qwaq_wait_result exit: %d %d\n", cmd, len);
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}
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void
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qwaq_init_timeout (struct timespec *timeout, int64_t time)
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{
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#define SEC 1000000000L
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struct timeval now;
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gettimeofday(&now, 0);
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timeout->tv_sec = now.tv_sec;
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timeout->tv_nsec = now.tv_usec * 1000L + time;
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if (timeout->tv_nsec >= SEC) {
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timeout->tv_sec += timeout->tv_nsec / SEC;
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timeout->tv_nsec %= SEC;
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}
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}
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void
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qwaq_init_cond (rwcond_t *cond)
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{
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pthread_cond_init (&cond->rcond, 0);
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pthread_cond_init (&cond->wcond, 0);
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pthread_mutex_init (&cond->mut, 0);
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}
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void
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qwaq_init_pipe (qwaq_pipe_t *pipe)
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{
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qwaq_init_cond (&pipe->pipe_cond);
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qwaq_init_cond (&pipe->string_id_cond);
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for (int i = 0; i < STRING_ID_QUEUE_SIZE - 1; i++) {
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RB_WRITE_DATA (pipe->string_ids, &i, 1);
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pipe->strings[i].mem = &dstring_default_mem;
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}
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}
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