[pulseaudio-discuss] [PATCH 1/2] thread_mq: supports a mainloop as thread/consumer
Alexander Couzens
lynxis at fe80.eu
Mon Aug 5 20:29:45 PDT 2013
Signed-off-by: Alexander Couzens <lynxis at fe80.eu>
---
src/pulsecore/thread-mq.c | 74 ++++++++++++++++++++++++++++++++++++++++-------
src/pulsecore/thread-mq.h | 7 +++--
2 files changed, 68 insertions(+), 13 deletions(-)
diff --git a/src/pulsecore/thread-mq.c b/src/pulsecore/thread-mq.c
index dd84c9a..12e6d4e 100644
--- a/src/pulsecore/thread-mq.c
+++ b/src/pulsecore/thread-mq.c
@@ -30,18 +30,27 @@
#include <pulsecore/semaphore.h>
#include <pulsecore/macro.h>
+#include <pulse/mainloop-api.h>
+
#include "thread-mq.h"
PA_STATIC_TLS_DECLARE_NO_FREE(thread_mq);
-static void asyncmsgq_read_cb(pa_mainloop_api*api, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
+static void asyncmsgq_read_cb(pa_mainloop_api *api, pa_io_event *e, int fd, pa_io_event_flags_t events, void *userdata) {
pa_thread_mq *q = userdata;
pa_asyncmsgq *aq;
- pa_assert(pa_asyncmsgq_read_fd(q->outq) == fd);
pa_assert(events == PA_IO_EVENT_INPUT);
- pa_asyncmsgq_ref(aq = q->outq);
+ if (pa_asyncmsgq_read_fd(q->outq) == fd)
+ pa_asyncmsgq_ref(aq = q->outq);
+ else if (pa_asyncmsgq_read_fd(q->inq))
+ pa_asyncmsgq_ref(aq = q->inq);
+ else {
+ pa_assert(false);
+ return;
+ }
+
pa_asyncmsgq_read_after_poll(aq);
for (;;) {
@@ -55,6 +64,12 @@ static void asyncmsgq_read_cb(pa_mainloop_api*api, pa_io_event* e, int fd, pa_io
while (pa_asyncmsgq_get(aq, &object, &code, &data, &offset, &chunk, 0) >= 0) {
int ret;
+ if (!object && code == PA_MESSAGE_SHUTDOWN) {
+ pa_asyncmsgq_done(aq, 0);
+ api->quit(api, 0);
+ break;
+ }
+
ret = pa_asyncmsgq_dispatch(object, code, data, offset, &chunk);
pa_asyncmsgq_done(aq, ret);
}
@@ -66,7 +81,7 @@ static void asyncmsgq_read_cb(pa_mainloop_api*api, pa_io_event* e, int fd, pa_io
pa_asyncmsgq_unref(aq);
}
-static void asyncmsgq_write_cb(pa_mainloop_api*api, pa_io_event* e, int fd, pa_io_event_flags_t events, void *userdata) {
+static void asyncmsgq_write_inq_cb(pa_mainloop_api *api, pa_io_event *e, int fd, pa_io_event_flags_t events, void *userdata) {
pa_thread_mq *q = userdata;
pa_assert(pa_asyncmsgq_write_fd(q->inq) == fd);
@@ -76,19 +91,50 @@ static void asyncmsgq_write_cb(pa_mainloop_api*api, pa_io_event* e, int fd, pa_i
pa_asyncmsgq_write_before_poll(q->inq);
}
+static void asyncmsgq_write_outq_cb(pa_mainloop_api *api, pa_io_event *e, int fd, pa_io_event_flags_t events, void *userdata) {
+ pa_thread_mq *q = userdata;
+
+ pa_assert(pa_asyncmsgq_write_fd(q->outq) == fd);
+ pa_assert(events == PA_IO_EVENT_INPUT);
+
+ pa_asyncmsgq_write_after_poll(q->outq);
+ pa_asyncmsgq_write_before_poll(q->outq);
+}
+
+void pa_thread_mq_init_thread_mainloop(pa_thread_mq *q, pa_mainloop_api *main_mainloop, pa_mainloop_api *thread_mainloop) {
+ pa_assert(q);
+ pa_assert(main_mainloop);
+ pa_assert(thread_mainloop);
+
+ pa_assert_se(q->inq = pa_asyncmsgq_new(0));
+ pa_assert_se(q->outq = pa_asyncmsgq_new(0));
+
+ q->main_mainloop = main_mainloop;
+
+ pa_assert_se(pa_asyncmsgq_read_before_poll(q->outq) == 0);
+ pa_asyncmsgq_write_before_poll(q->outq);
+ pa_assert_se(q->read_main_event = main_mainloop->io_new(main_mainloop, pa_asyncmsgq_read_fd(q->outq), PA_IO_EVENT_INPUT, asyncmsgq_read_cb, q));
+ pa_assert_se(q->write_thread_event = main_mainloop->io_new(thread_mainloop, pa_asyncmsgq_write_fd(q->outq), PA_IO_EVENT_INPUT, asyncmsgq_write_outq_cb, q));
+
+ pa_asyncmsgq_read_before_poll(q->inq);
+ pa_asyncmsgq_write_before_poll(q->inq);
+ pa_assert_se(q->read_thread_event = thread_mainloop->io_new(thread_mainloop, pa_asyncmsgq_read_fd(q->inq), PA_IO_EVENT_INPUT, asyncmsgq_read_cb, q));
+ pa_assert_se(q->write_main_event = main_mainloop->io_new(main_mainloop, pa_asyncmsgq_write_fd(q->inq), PA_IO_EVENT_INPUT, asyncmsgq_write_inq_cb, q));
+}
+
void pa_thread_mq_init(pa_thread_mq *q, pa_mainloop_api *mainloop, pa_rtpoll *rtpoll) {
pa_assert(q);
pa_assert(mainloop);
- q->mainloop = mainloop;
+ q->main_mainloop = mainloop;
pa_assert_se(q->inq = pa_asyncmsgq_new(0));
pa_assert_se(q->outq = pa_asyncmsgq_new(0));
pa_assert_se(pa_asyncmsgq_read_before_poll(q->outq) == 0);
- pa_assert_se(q->read_event = mainloop->io_new(mainloop, pa_asyncmsgq_read_fd(q->outq), PA_IO_EVENT_INPUT, asyncmsgq_read_cb, q));
+ pa_assert_se(q->read_main_event = mainloop->io_new(mainloop, pa_asyncmsgq_read_fd(q->outq), PA_IO_EVENT_INPUT, asyncmsgq_read_cb, q));
pa_asyncmsgq_write_before_poll(q->inq);
- pa_assert_se(q->write_event = mainloop->io_new(mainloop, pa_asyncmsgq_write_fd(q->inq), PA_IO_EVENT_INPUT, asyncmsgq_write_cb, q));
+ pa_assert_se(q->write_main_event = mainloop->io_new(mainloop, pa_asyncmsgq_write_fd(q->inq), PA_IO_EVENT_INPUT, asyncmsgq_write_inq_cb, q));
pa_rtpoll_item_new_asyncmsgq_read(rtpoll, PA_RTPOLL_EARLY, q->inq);
pa_rtpoll_item_new_asyncmsgq_write(rtpoll, PA_RTPOLL_LATE, q->outq);
@@ -106,15 +152,21 @@ void pa_thread_mq_done(pa_thread_mq *q) {
if (!pa_asyncmsgq_dispatching(q->outq))
pa_asyncmsgq_flush(q->outq, true);
- q->mainloop->io_free(q->read_event);
- q->mainloop->io_free(q->write_event);
- q->read_event = q->write_event = NULL;
+ q->main_mainloop->io_free(q->read_main_event);
+ q->main_mainloop->io_free(q->write_main_event);
+ q->read_main_event = q->write_main_event = NULL;
+
+ if (q->thread_mainloop) {
+ q->thread_mainloop->io_free(q->read_thread_event);
+ q->thread_mainloop->io_free(q->write_thread_event);
+ q->read_thread_event = q->write_thread_event = NULL;
+ }
pa_asyncmsgq_unref(q->inq);
pa_asyncmsgq_unref(q->outq);
q->inq = q->outq = NULL;
- q->mainloop = NULL;
+ q->main_mainloop = NULL;
}
void pa_thread_mq_install(pa_thread_mq *q) {
diff --git a/src/pulsecore/thread-mq.h b/src/pulsecore/thread-mq.h
index a1f4b3f..79af364 100644
--- a/src/pulsecore/thread-mq.h
+++ b/src/pulsecore/thread-mq.h
@@ -31,12 +31,15 @@
* attached to the thread using pa_thread_mq_install(). */
typedef struct pa_thread_mq {
- pa_mainloop_api *mainloop;
+ pa_mainloop_api *main_mainloop;
+ pa_mainloop_api *thread_mainloop;
pa_asyncmsgq *inq, *outq;
- pa_io_event *read_event, *write_event;
+ pa_io_event *read_main_event, *write_main_event;
+ pa_io_event *read_thread_event, *write_thread_event;
} pa_thread_mq;
void pa_thread_mq_init(pa_thread_mq *q, pa_mainloop_api *mainloop, pa_rtpoll *rtpoll);
+void pa_thread_mq_init_thread_mainloop(pa_thread_mq *q, pa_mainloop_api *main_mainloop, pa_mainloop_api *thread_mainloop);
void pa_thread_mq_done(pa_thread_mq *q);
/* Install the specified pa_thread_mq object for the current thread */
--
1.8.3.4
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