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-rw-r--r--src/Makefile.am2
-rw-r--r--src/decode.c1
-rw-r--r--src/interface.c3
-rw-r--r--src/main.c18
-rw-r--r--src/main_notify.c130
-rw-r--r--src/main_notify.h34
-rw-r--r--src/player.c1
-rw-r--r--src/player.h4
8 files changed, 173 insertions, 20 deletions
diff --git a/src/Makefile.am b/src/Makefile.am
index 7a3bacea1..6d709c38a 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -52,6 +52,7 @@ mpd_headers = \
listen.h \
log.h \
ls.h \
+ main_notify.h \
mpd_types.h \
myfprintf.h \
normalize.h \
@@ -109,6 +110,7 @@ mpd_SOURCES = \
log.c \
ls.c \
main.c \
+ main_notify.c \
myfprintf.c \
normalize.c \
compress.c \
diff --git a/src/decode.c b/src/decode.c
index 410eb8c04..a7fc0d562 100644
--- a/src/decode.c
+++ b/src/decode.c
@@ -24,6 +24,7 @@
#include "path.h"
#include "log.h"
#include "ls.h"
+#include "main_notify.h"
/* called inside decoder_task (inputPlugins) */
void decoder_wakeup_player(void)
diff --git a/src/interface.c b/src/interface.c
index b538ffc3e..db5959f3a 100644
--- a/src/interface.c
+++ b/src/interface.c
@@ -27,6 +27,7 @@
#include "ioops.h"
#include "myfprintf.h"
#include "os_compat.h"
+#include "main_notify.h"
#include "../config.h"
@@ -494,7 +495,9 @@ int doIOForInterfaces(void)
registered_IO_add_fds(&fdmax, &rfds, &wfds, &efds);
+ main_notify_lock();
selret = select(fdmax + 1, &rfds, &wfds, &efds, NULL);
+ main_notify_unlock();
if (selret < 0 && errno == EINTR)
break;
diff --git a/src/main.c b/src/main.c
index d3cc35924..1e77dc2fd 100644
--- a/src/main.c
+++ b/src/main.c
@@ -43,6 +43,7 @@
#include "utils.h"
#include "normalize.h"
#include "zeroconf.h"
+#include "main_notify.h"
#include "os_compat.h"
#define SYSTEM_CONFIG_FILE_LOCATION "/etc/mpd.conf"
@@ -56,8 +57,6 @@ typedef struct _Options {
int verbose;
} Options;
-static Notify main_notify;
-
/*
* from git-1.3.0, needed for solaris
*/
@@ -380,16 +379,6 @@ static void killFromPidFile(char *cmd, int killOption)
exit(EXIT_SUCCESS);
}
-void wakeup_main_task(void)
-{
- notifySignal(&main_notify);
-}
-
-void wait_main_task(void)
-{
- notifySignal(&main_notify);
-}
-
int main(int argc, char *argv[])
{
Options options;
@@ -432,10 +421,9 @@ int main(int argc, char *argv[])
initNormalization();
initInputStream();
- notifyInit(&main_notify);
-
daemonize(&options);
+ init_main_notify();
setup_log_output(options.stdOutput);
initSigHandlers();
@@ -447,8 +435,6 @@ int main(int argc, char *argv[])
playerInit(&getPlayerData()->playerControl);
read_state_file();
- notifyEnter(&main_notify);
-
while (COMMAND_RETURN_KILL != doIOForInterfaces() &&
COMMAND_RETURN_KILL != handlePendingSignals()) {
syncPlayerAndPlaylist();
diff --git a/src/main_notify.c b/src/main_notify.c
new file mode 100644
index 000000000..bb5db8259
--- /dev/null
+++ b/src/main_notify.c
@@ -0,0 +1,130 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 Warren Dukes <warren.dukes@gmail.com>
+ * Copyright (C) 2008 Eric Wong <normalperson@yhbt.net>
+ *
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * 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
+ */
+
+#include "main_notify.h"
+#include "notify.h"
+#include "utils.h"
+#include "ioops.h"
+#include "gcc.h"
+#include "log.h"
+
+static struct ioOps main_notify_IO;
+static int main_pipe[2];
+static pthread_t main_task;
+static pthread_cond_t main_wakeup = PTHREAD_COND_INITIALIZER;
+static pthread_mutex_t main_wakeup_mutex = PTHREAD_MUTEX_INITIALIZER;
+static pthread_mutex_t select_mutex = PTHREAD_MUTEX_INITIALIZER;
+
+static int ioops_fdset(fd_set * rfds,
+ mpd_unused fd_set * wfds, mpd_unused fd_set * efds)
+{
+ FD_SET(main_pipe[0], rfds);
+ return main_pipe[0];
+}
+
+static void consume_pipe(void)
+{
+ char buffer[2];
+ ssize_t r = read(main_pipe[0], buffer, sizeof(buffer));
+
+ if (r < 0 && errno != EAGAIN && errno != EINTR)
+ FATAL("error reading from pipe: %s\n", strerror(errno));
+}
+
+static int ioops_consume(int fd_count, fd_set * rfds,
+ mpd_unused fd_set * wfds, mpd_unused fd_set * efds)
+{
+ if (FD_ISSET(main_pipe[0], rfds)) {
+ consume_pipe();
+ FD_CLR(main_pipe[0], rfds);
+ fd_count--;
+ }
+ return fd_count;
+}
+
+void init_main_notify(void)
+{
+ if (pipe(main_pipe) < 0)
+ FATAL("Couldn't open pipe: %s", strerror(errno));
+ if (set_nonblocking(main_pipe[0]) < 0)
+ FATAL("Couldn't set non-blocking on main_notify fd: %s",
+ strerror(errno));
+ if (set_nonblocking(main_pipe[1]) < 0)
+ FATAL("Couldn't set non-blocking on main_notify fd: %s",
+ strerror(errno));
+ main_notify_IO.fdset = ioops_fdset;
+ main_notify_IO.consume = ioops_consume;
+ registerIO(&main_notify_IO);
+ main_task = pthread_self();
+}
+
+static int wakeup_via_pipe(void)
+{
+ int ret = pthread_mutex_trylock(&select_mutex);
+ if (ret == EBUSY) {
+ ssize_t w = write(main_pipe[1], "", 1);
+ if (w < 0 && errno != EAGAIN && errno != EINTR)
+ FATAL("error writing to pipe: %s\n",
+ strerror(errno));
+ return 1;
+ } else {
+ pthread_mutex_unlock(&select_mutex);
+ return 0;
+ }
+}
+
+static void wakeup_via_cond(void)
+{
+ int ret = pthread_mutex_trylock(&main_wakeup_mutex);
+
+ if (ret == EBUSY)
+ return; /* nope, no need to wakeup at all */
+ pthread_cond_broadcast(&main_wakeup);
+ pthread_mutex_unlock(&main_wakeup_mutex);
+}
+
+void wakeup_main_task(void)
+{
+ assert(!pthread_equal(main_task, pthread_self()));
+
+ if (!wakeup_via_pipe())
+ wakeup_via_cond();
+}
+
+void main_notify_lock(void)
+{
+ assert(pthread_equal(main_task, pthread_self()));
+ pthread_mutex_lock(&select_mutex);
+}
+
+void main_notify_unlock(void)
+{
+ assert(pthread_equal(main_task, pthread_self()));
+ pthread_mutex_unlock(&select_mutex);
+}
+
+void wait_main_task(void)
+{
+ assert(pthread_equal(main_task, pthread_self()));
+
+ pthread_mutex_lock(&main_wakeup_mutex);
+ pthread_cond_wait(&main_wakeup, &main_wakeup_mutex);
+}
+
diff --git a/src/main_notify.h b/src/main_notify.h
new file mode 100644
index 000000000..c7bba4440
--- /dev/null
+++ b/src/main_notify.h
@@ -0,0 +1,34 @@
+/* the Music Player Daemon (MPD)
+ * Copyright (C) 2003-2007 Warren Dukes <warren.dukes@gmail.com>
+ * Copyright (C) 2008 Eric Wong <normalperson@yhbt.net>
+ *
+ * This project's homepage is: http://www.musicpd.org
+ *
+ * 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
+ */
+
+#ifndef MAIN_NOTIFY_H
+#define MAIN_NOTIFY_H
+
+void init_main_notify(void);
+
+void wakeup_main_task(void);
+
+void wait_main_task(void);
+
+void main_notify_lock(void);
+
+void main_notify_unlock(void);
+
+#endif /* MAIN_NOTIFY_H */
diff --git a/src/player.c b/src/player.c
index b38769331..98bd91177 100644
--- a/src/player.c
+++ b/src/player.c
@@ -32,6 +32,7 @@
#include "permission.h"
#include "ack.h"
#include "os_compat.h"
+#include "main_notify.h"
static void playerCloseAudio(void);
diff --git a/src/player.h b/src/player.h
index 6e0bc83d7..6ec3f8329 100644
--- a/src/player.h
+++ b/src/player.h
@@ -76,10 +76,6 @@ typedef struct _PlayerControl {
volatile double totalPlayTime;
} PlayerControl;
-void wakeup_main_task(void);
-
-void wait_main_task(void);
-
void wakeup_player_nb(PlayerControl *pc);
void player_sleep(PlayerControl *pc);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 15:43:26 +0000