mirror of
https://github.com/linux-speakup/espeakup.git
synced 2026-08-09 09:19:09 +02:00
b7f324072f
1. Don't lock or unlock queue_guard during queue_clear. It is locked when queue_clear is called, and it should remain so. 2. Protect runner_must_stop with queue_guard in the request_espeak_stop function. The following condition should always hold: queue_guard is locked while testing or modifying runner_must_stop. 3. Rename stop_guard to acknowledge_guard. This is a more descriptive name. This mutex simply protects the acknowledgement of the stop request from being lost. 4. Remove the pthread_mutex_lock from the top of queue_process_entry, because queue_guard is already locked when the function is called.
149 lines
3.4 KiB
C
149 lines
3.4 KiB
C
/*
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* espeakup - interface which allows speakup to use espeak
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*
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* Copyright (C) 2008 William Hubbs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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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. See the
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* GNU General Public License for more details.
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*
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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, see <http://www.gnu.org/licenses/>.
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*/
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#include <errno.h>
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#include <signal.h>
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#include <stdio.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 "espeakup.h"
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/* program version */
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const char *Version = "0.71";
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/* path to our pid file */
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const char *pidPath = "/var/run/espeakup.pid";
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int debug = 0;
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int self_pipe_fds[2];
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volatile int stopped = 0;
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volatile int should_run = 1;
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espeak_AUDIO_OUTPUT audio_mode;
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pthread_cond_t runner_awake = PTHREAD_COND_INITIALIZER;
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pthread_cond_t stop_acknowledged = PTHREAD_COND_INITIALIZER;
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pthread_mutex_t queue_guard = PTHREAD_MUTEX_INITIALIZER;
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pthread_mutex_t acknowledge_guard = PTHREAD_MUTEX_INITIALIZER;
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int espeakup_is_running(void)
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{
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int rc;
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FILE *pidFile;
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pid_t pid;
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rc = 0;
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pidFile = fopen(pidPath, "r");
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if (pidFile) {
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fscanf(pidFile, "%d", &pid);
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fclose(pidFile);
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if (!kill(pid, 0) || errno != ESRCH)
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rc = 1;
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}
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return rc;
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}
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int create_pid_file(void)
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{
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FILE *pidFile;
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pidFile = fopen(pidPath, "w");
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if (!pidFile)
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return -1;
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fprintf(pidFile, "%d\n", getpid());
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fclose(pidFile);
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return 0;
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}
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int main(int argc, char **argv)
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{
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sigset_t sigset;
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int err;
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pthread_t signal_thread_id;
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pthread_t espeak_thread_id;
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pthread_t softsynth_thread_id;
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struct synth_t s = {
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.voice = "",
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};
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/* process command line options */
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process_cli(argc, argv);
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/* Is the espeakup daemon running? */
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if (espeakup_is_running()) {
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printf("Espeakup is already running!\n");
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return 1;
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}
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/*
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* If we are not in debug mode, become a daemon and store the pid.
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*/
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if (!debug) {
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daemon(0, 1);
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if (create_pid_file() < 0) {
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perror("Unable to create pid file");
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return 2;
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}
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}
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/* set up the pipe used to wake the espeak thread */
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if (pipe(self_pipe_fds) < 0) {
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perror("Unable to create pipe");
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return 5;
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}
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/* create the signal processing thread here. */
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err = pthread_create(&signal_thread_id, NULL, signal_thread, NULL);
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if (err != 0) {
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return 4;
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}
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/*
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* Set up the signal mask which will be the default for all threads.
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* We are handling sigint and sigterm, so block them.
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*/
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sigemptyset(&sigset);
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sigaddset(&sigset, SIGINT);
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sigaddset(&sigset, SIGTERM);
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sigprocmask(SIG_BLOCK, &sigset, NULL);
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/* Spawn our softsynth thread. */
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err = pthread_create(&softsynth_thread_id, NULL, softsynth_thread, &s);
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if (err != 0) {
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return 4;
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}
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/* Spawn our espeak-interacting thread. */
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err = pthread_create(&espeak_thread_id, NULL, espeak_thread, &s);
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if (err != 0) {
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return 4;
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}
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/* wait for the threads to shut down. */
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pthread_join(signal_thread_id, NULL);
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pthread_join(softsynth_thread_id, NULL);
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pthread_join(espeak_thread_id, NULL);
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if ( ! debug)
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unlink(pidPath);
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return 0;
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}
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