From 9ccaa904393ddf2189f7d7815cef29a3e3393cbc Mon Sep 17 00:00:00 2001
From: Max Kellermann <max@duempel.org>
Date: Sun, 28 Aug 2011 17:29:09 +0200
Subject: [PATCH] ntp_server: use the I/O thread
---
Makefile.am | 2 ++
src/ntp_server.c | 60 ++++++++++++++++++++++-----------
src/ntp_server.h | 20 +++++------
src/output/raop_output_plugin.c | 32 +++++-------------
test/run_ntp_server.c | 21 +++++-------
test/run_output.c | 11 ++++++
6 files changed, 80 insertions(+), 66 deletions(-)
diff --git a/Makefile.am b/Makefile.am
index 6f9963a16..fc78a8e2c 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1014,6 +1014,7 @@ test_run_ntp_server_LDADD = $(MPD_LIBS) \
$(GLIB_LIBS)
test_run_ntp_server_SOURCES = test/run_ntp_server.c \
test/signals.c test/signals.h \
+ src/io_thread.c src/io_thread.h \
src/ntp_server.c src/ntp_server.h
test_run_filter_CPPFLAGS = $(AM_CPPFLAGS)
@@ -1119,6 +1120,7 @@ test_run_output_LDADD = $(MPD_LIBS) \
test_run_output_SOURCES = test/run_output.c \
test/stdbin.h \
src/conf.c src/tokenizer.c src/utils.c src/string_util.c src/log.c \
+ src/io_thread.c src/io_thread.h \
src/audio_check.c \
src/audio_format.c \
src/audio_parser.c \
diff --git a/src/ntp_server.c b/src/ntp_server.c
index 8e4aca6bd..d2e45bcac 100644
--- a/src/ntp_server.c
+++ b/src/ntp_server.c
@@ -18,8 +18,10 @@
*/
#include "ntp_server.h"
+#include "io_thread.h"
#include <glib.h>
+#include <assert.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
@@ -31,7 +33,6 @@
#include <ws2tcpip.h>
#include <winsock.h>
#else
-#include <sys/select.h>
#include <sys/socket.h>
#endif
@@ -75,7 +76,7 @@ fill_time_buffer(unsigned char *buffer)
fill_time_buffer_with_time(buffer, ¤t_time);
}
-bool
+static bool
ntp_server_handle(struct ntp_server *ntp)
{
unsigned char buf[32];
@@ -102,25 +103,14 @@ ntp_server_handle(struct ntp_server *ntp)
return num_bytes == sizeof(buf);
}
-bool
-ntp_server_check(struct ntp_server *ntp, struct timeval *tout)
+static gboolean
+ntp_in_event(G_GNUC_UNUSED GIOChannel *source,
+ G_GNUC_UNUSED GIOCondition condition,
+ gpointer data)
{
- fd_set rdfds;
- int fdmax = 0;
+ struct ntp_server *ntp = data;
- FD_ZERO(&rdfds);
-
- FD_SET(ntp->fd, &rdfds);
- fdmax = ntp->fd;
- if (select(fdmax + 1, &rdfds,NULL, NULL, tout) <= 0)
- return false;
-
- if (FD_ISSET(ntp->fd, &rdfds)) {
- if (!ntp_server_handle(ntp)) {
- g_debug("unable to send timing response\n");
- return false;
- }
- }
+ ntp_server_handle(ntp);
return true;
}
@@ -131,9 +121,41 @@ ntp_server_init(struct ntp_server *ntp)
ntp->fd = -1;
}
+void
+ntp_server_open(struct ntp_server *ntp, int fd)
+{
+ assert(ntp->fd < 0);
+ assert(fd >= 0);
+
+ ntp->fd = fd;
+
+#ifndef G_OS_WIN32
+ ntp->channel = g_io_channel_unix_new(fd);
+#else
+ ntp->channel = g_io_channel_win32_new_socket(fd);
+#endif
+ /* NULL encoding means the stream is binary safe */
+ g_io_channel_set_encoding(ntp->channel, NULL, NULL);
+ /* no buffering */
+ g_io_channel_set_buffered(ntp->channel, false);
+
+ ntp->source = g_io_create_watch(ntp->channel, G_IO_IN);
+ g_source_set_callback(ntp->source, (GSourceFunc)ntp_in_event, ntp,
+ NULL);
+ g_source_attach(ntp->source, io_thread_context());
+}
+
void
ntp_server_close(struct ntp_server *ntp)
{
+ if (ntp->source != NULL) {
+ g_source_destroy(ntp->source);
+ g_source_unref(ntp->source);
+ }
+
+ if (ntp->channel != NULL)
+ g_io_channel_unref(ntp->channel);
+
if (ntp->fd >= 0)
close(ntp->fd);
}
diff --git a/src/ntp_server.h b/src/ntp_server.h
index 56593fef0..2b970dff2 100644
--- a/src/ntp_server.h
+++ b/src/ntp_server.h
@@ -20,6 +20,8 @@
#ifndef MPD_NTP_SERVER_H
#define MPD_NTP_SERVER_H
+#include <glib.h>
+
#include <stdbool.h>
struct timeval;
@@ -27,24 +29,18 @@ struct timeval;
struct ntp_server {
unsigned short port;
int fd;
+
+ GIOChannel *channel;
+ GSource *source;
};
void
ntp_server_init(struct ntp_server *ntp);
+void
+ntp_server_open(struct ntp_server *ntp, int fd);
+
void
ntp_server_close(struct ntp_server *ntp);
-/*
- * Recv the NTP datagram from the AirTunes, send back an NTP response.
- */
-bool
-ntp_server_handle(struct ntp_server *ntp);
-
-/*
- * check to see if there are any timing requests, and respond if there are any
- */
-bool
-ntp_server_check(struct ntp_server *ntp, struct timeval *tout);
-
#endif
diff --git a/src/output/raop_output_plugin.c b/src/output/raop_output_plugin.c
index a498ca670..912048007 100644
--- a/src/output/raop_output_plugin.c
+++ b/src/output/raop_output_plugin.c
@@ -535,15 +535,11 @@ exec_request(struct rtspcl_data *rtspcld, const char *cmd,
while (true) {
FD_ZERO(&rdfds);
FD_SET(rtspcld->fd, &rdfds);
- FD_SET(raop_session->ntp.fd, &rdfds);
- fdmax = raop_session->ntp.fd > rtspcld->fd ? raop_session->ntp.fd : rtspcld->fd;;
+ fdmax = rtspcld->fd;
select(fdmax + 1, &rdfds, NULL, NULL, &tout);
if (FD_ISSET(rtspcld->fd, &rdfds)) {
break;
}
- if (FD_ISSET(raop_session->ntp.fd, &rdfds)) {
- ntp_server_handle(&raop_session->ntp);
- }
}
if (read_line(rtspcld->fd, line, sizeof(line), timeout, 0) <= 0) {
@@ -1068,20 +1064,14 @@ static bool
send_audio_data(int fd, GError **error_r)
{
int i = 0;
- struct timeval current_time, tout, rtp_time;
+ struct timeval current_time, rtp_time;
struct raop_data *rd = raop_session->raop_list;
get_time_for_rtp(&raop_session->play_state, &rtp_time);
gettimeofday(¤t_time, NULL);
int diff = difference(¤t_time, &rtp_time);
+ g_usleep(-diff);
- while (diff < -10000) {
- tout.tv_sec = 0;
- tout.tv_usec = -diff;
- ntp_server_check(&raop_session->ntp, &tout);
- gettimeofday(¤t_time, NULL);
- diff = difference(¤t_time, &rtp_time);
- }
gettimeofday(&raop_session->play_state.last_send, NULL);
while (rd) {
if (rd->started) {
@@ -1214,10 +1204,8 @@ raop_output_cancel(void *data)
static bool
raop_output_pause(void *data)
{
- struct timeval tout = {.tv_sec = 0, .tv_usec = 0};
struct raop_data *rd = (struct raop_data *) data;
- ntp_server_check(&raop_session->ntp, &tout);
rd->paused = true;
return true;
}
@@ -1284,17 +1272,18 @@ raop_output_open(void *data, struct audio_format *audio_format, GError **error_r
if (raop_session->data_fd < 0)
return false;
- raop_session->ntp.fd =
- open_udp_socket(NULL, &raop_session->ntp.port,
- error_r);
- if (raop_session->ntp.fd < 0)
+ int fd = open_udp_socket(NULL, &raop_session->ntp.port,
+ error_r);
+ if (fd < 0)
return false;
+ ntp_server_open(&raop_session->ntp, fd);
+
raop_session->ctrl.fd =
open_udp_socket(NULL, &raop_session->ctrl.port,
error_r);
if (raop_session->ctrl.fd < 0) {
- close(raop_session->ntp.fd);
+ ntp_server_close(&raop_session->ntp);
raop_session->ctrl.fd = -1;
g_mutex_unlock(raop_session->list_mutex);
return false;
@@ -1324,7 +1313,6 @@ raop_output_play(void *data, const void *chunk, size_t size,
{
//raopcl_send_sample
struct raop_data *rd = data;
- struct timeval tout = {.tv_sec = 0, .tv_usec = 0};
size_t rval = 0, orig_size = size;
rd->paused = false;
@@ -1335,8 +1323,6 @@ raop_output_play(void *data, const void *chunk, size_t size,
g_mutex_lock(raop_session->data_mutex);
- ntp_server_check(&raop_session->ntp, &tout);
-
if (raop_session->play_state.rtptime <= NUMSAMPLES) {
// looped over, need new reference point to calculate correct times
raop_session->play_state.playing = false;
diff --git a/test/run_ntp_server.c b/test/run_ntp_server.c
index 7268fa94c..db24059ab 100644
--- a/test/run_ntp_server.c
+++ b/test/run_ntp_server.c
@@ -20,6 +20,7 @@
#include "config.h"
#include "ntp_server.h"
#include "signals.h"
+#include "io_thread.h"
#include <glib.h>
@@ -39,12 +40,10 @@
#include <arpa/inet.h>
#endif
-static bool quit = false;
-
void
on_quit(void)
{
- quit = true;
+ io_thread_quit();
}
static int bind_host(int sd, char *hostname, unsigned long ulAddr,
@@ -122,27 +121,25 @@ open_udp_socket(char *hostname, unsigned short *port)
int
main(G_GNUC_UNUSED int argc, G_GNUC_UNUSED char **argv)
{
+ g_thread_init(NULL);
signals_init();
+ io_thread_init();
struct ntp_server ntp;
ntp_server_init(&ntp);
- ntp.fd = open_udp_socket(NULL, &ntp.port);
- if (ntp.fd < 0) {
+ int fd = open_udp_socket(NULL, &ntp.port);
+ if (fd < 0) {
g_printerr("Failed to create UDP socket\n");
ntp_server_close(&ntp);
return EXIT_FAILURE;
}
- while (!quit) {
- struct timeval tv = {
- .tv_sec = 1,
- .tv_usec = 0,
- };
+ ntp_server_open(&ntp, fd);
- ntp_server_check(&ntp, &tv);
- }
+ io_thread_run();
ntp_server_close(&ntp);
+ io_thread_deinit();
return EXIT_SUCCESS;
}
diff --git a/test/run_output.c b/test/run_output.c
index 8a34fedec..b4d2b8f9c 100644
--- a/test/run_output.c
+++ b/test/run_output.c
@@ -18,6 +18,7 @@
*/
#include "config.h"
+#include "io_thread.h"
#include "output_plugin.h"
#include "output_internal.h"
#include "output_control.h"
@@ -36,6 +37,7 @@
#include <assert.h>
#include <string.h>
#include <unistd.h>
+#include <stdlib.h>
struct playlist g_playlist;
@@ -146,6 +148,13 @@ int main(int argc, char **argv)
return 1;
}
+ io_thread_init();
+ if (!io_thread_start(&error)) {
+ g_warning("%s", error->message);
+ g_error_free(error);
+ return EXIT_FAILURE;
+ }
+
/* initialize the audio output */
if (!load_audio_output(&ao, argv[2]))
@@ -216,6 +225,8 @@ int main(int argc, char **argv)
ao_plugin_finish(ao.plugin, ao.data);
g_mutex_free(ao.mutex);
+ io_thread_deinit();
+
config_global_finish();
return 0;