big s/polyp/pulse/g

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f

1 files changed, 839 insertions, 0 deletions

diff --git a/src/pulse/mainloop.c b/src/pulse/mainloop.c
new file mode 100644
index 00000000..32f1a845
--- /dev/null
+++ b/src/pulse/mainloop.c
@@ -0,0 +1,839 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+ 
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+ 
+  PulseAudio 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 Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <signal.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#ifdef HAVE_SYS_POLL_H
+#include <sys/poll.h>
+#else
+#include "../pulsecore/poll.h"
+#endif
+
+#include "../pulsecore/winsock.h"
+
+#ifndef HAVE_PIPE
+#include "../pulsecore/pipe.h"
+#endif
+
+#include <pulsecore/core-error.h>
+#include <pulse/timeval.h>
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core-util.h>
+#include <pulsecore/idxset.h>
+#include <pulsecore/log.h>
+
+#include "mainloop.h"
+
+struct pa_io_event {
+    pa_mainloop *mainloop;
+    int dead;
+    int fd;
+    pa_io_event_flags_t events;
+    void (*callback) (pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t f, void *userdata);
+    struct pollfd *pollfd;
+    void *userdata;
+    void (*destroy_callback) (pa_mainloop_api*a, pa_io_event *e, void *userdata);
+};
+
+struct pa_time_event {
+    pa_mainloop *mainloop;
+    int dead;
+    int enabled;
+    struct timeval timeval;
+    void (*callback)(pa_mainloop_api*a, pa_time_event *e, const struct timeval*tv, void *userdata);
+    void *userdata;
+    void (*destroy_callback) (pa_mainloop_api*a, pa_time_event *e, void *userdata);
+};
+
+struct pa_defer_event {
+    pa_mainloop *mainloop;
+    int dead;
+    int enabled;
+    void (*callback)(pa_mainloop_api*a, pa_defer_event*e, void *userdata);
+    void *userdata;
+    void (*destroy_callback) (pa_mainloop_api*a, pa_defer_event *e, void *userdata);
+};
+
+struct pa_mainloop {
+    pa_idxset *io_events, *time_events, *defer_events;
+    int io_events_scan_dead, defer_events_scan_dead, time_events_scan_dead;
+
+    struct pollfd *pollfds;
+    unsigned max_pollfds, n_pollfds;
+    int rebuild_pollfds;
+
+    int prepared_timeout;
+
+    int quit, retval;
+    pa_mainloop_api api;
+
+    int deferred_pending;
+
+    int wakeup_pipe[2];
+
+    enum {
+        STATE_PASSIVE,
+        STATE_PREPARED,
+        STATE_POLLING,
+        STATE_POLLED,
+        STATE_QUIT
+    } state;
+
+    pa_poll_func poll_func;
+    void *poll_func_userdata;
+};
+
+/* IO events */
+static pa_io_event* mainloop_io_new(
+    pa_mainloop_api*a,
+    int fd,
+    pa_io_event_flags_t events,
+    void (*callback) (pa_mainloop_api*a, pa_io_event *e, int fd, pa_io_event_flags_t events, void *userdata),
+    void *userdata) {
+    
+    pa_mainloop *m;
+    pa_io_event *e;
+
+    assert(a && a->userdata && fd >= 0 && callback);
+    m = a->userdata;
+    assert(a == &m->api);
+
+    e = pa_xmalloc(sizeof(pa_io_event));
+    e->mainloop = m;
+    e->dead = 0;
+
+    e->fd = fd;
+    e->events = events;
+    e->callback = callback;
+    e->userdata = userdata;
+    e->destroy_callback = NULL;
+    e->pollfd = NULL;
+
+#ifdef OS_IS_WIN32
+    {
+        fd_set xset;
+        struct timeval tv;
+
+        tv.tv_sec = 0;
+        tv.tv_usec = 0;
+
+        FD_ZERO (&xset);
+        FD_SET (fd, &xset);
+
+        if ((select((SELECT_TYPE_ARG1) fd, NULL, NULL, SELECT_TYPE_ARG234 &xset,
+                    SELECT_TYPE_ARG5 &tv) == -1) &&
+             (WSAGetLastError() == WSAENOTSOCK)) {
+            pa_log_warn(__FILE__": WARNING: cannot monitor non-socket file descriptors.");
+            e->dead = 1;
+        }
+    }
+#endif
+
+    pa_idxset_put(m->io_events, e, NULL);
+    m->rebuild_pollfds = 1;
+
+    pa_mainloop_wakeup(m);
+
+    return e;
+}
+
+static void mainloop_io_enable(pa_io_event *e, pa_io_event_flags_t events) {
+    assert(e && e->mainloop);
+
+    e->events = events;
+    e->mainloop->rebuild_pollfds = 1;
+
+    pa_mainloop_wakeup(e->mainloop);
+}
+
+static void mainloop_io_free(pa_io_event *e) {
+    assert(e && e->mainloop);
+
+    e->dead = e->mainloop->io_events_scan_dead = e->mainloop->rebuild_pollfds = 1;
+
+    pa_mainloop_wakeup(e->mainloop);
+}
+
+static void mainloop_io_set_destroy(pa_io_event *e, void (*callback)(pa_mainloop_api*a, pa_io_event *e, void *userdata)) {
+    assert(e);
+    e->destroy_callback = callback;
+}
+
+/* Defer events */
+static pa_defer_event* mainloop_defer_new(pa_mainloop_api*a, void (*callback) (pa_mainloop_api*a, pa_defer_event *e, void *userdata), void *userdata) {
+    pa_mainloop *m;
+    pa_defer_event *e;
+
+    assert(a && a->userdata && callback);
+    m = a->userdata;
+    assert(a == &m->api);
+
+    e = pa_xmalloc(sizeof(pa_defer_event));
+    e->mainloop = m;
+    e->dead = 0;
+
+    e->enabled = 1;
+    e->callback = callback;
+    e->userdata = userdata;
+    e->destroy_callback = NULL;
+
+    pa_idxset_put(m->defer_events, e, NULL);
+
+    m->deferred_pending++;
+
+    pa_mainloop_wakeup(e->mainloop);
+
+    return e;
+}
+
+static void mainloop_defer_enable(pa_defer_event *e, int b) {
+    assert(e);
+
+    if (e->enabled && !b) {
+        assert(e->mainloop->deferred_pending > 0);
+        e->mainloop->deferred_pending--;
+    } else if (!e->enabled && b) {
+        e->mainloop->deferred_pending++;
+        pa_mainloop_wakeup(e->mainloop);
+    }
+    
+    e->enabled = b;
+}
+
+static void mainloop_defer_free(pa_defer_event *e) {
+    assert(e);
+    e->dead = e->mainloop->defer_events_scan_dead = 1;
+
+    if (e->enabled) {
+        e->enabled = 0;
+        assert(e->mainloop->deferred_pending > 0);
+        e->mainloop->deferred_pending--;
+    }
+}
+
+static void mainloop_defer_set_destroy(pa_defer_event *e, void (*callback)(pa_mainloop_api*a, pa_defer_event *e, void *userdata)) {
+    assert(e);
+    e->destroy_callback = callback;
+}
+
+/* Time events */
+static pa_time_event* mainloop_time_new(pa_mainloop_api*a, const struct timeval *tv, void (*callback) (pa_mainloop_api*a, pa_time_event*e, const struct timeval *tv, void *userdata), void *userdata) {
+    pa_mainloop *m;
+    pa_time_event *e;
+
+    assert(a && a->userdata && callback);
+    m = a->userdata;
+    assert(a == &m->api);
+
+    e = pa_xmalloc(sizeof(pa_time_event));
+    e->mainloop = m;
+    e->dead = 0;
+
+    e->enabled = !!tv;
+    if (tv)
+        e->timeval = *tv;
+
+    e->callback = callback;
+    e->userdata = userdata;
+    e->destroy_callback = NULL;
+
+    pa_idxset_put(m->time_events, e, NULL);
+
+    if (e->enabled)
+        pa_mainloop_wakeup(m);
+    
+    return e;
+}
+
+static void mainloop_time_restart(pa_time_event *e, const struct timeval *tv) {
+    assert(e);
+
+    if (tv) {
+        e->enabled = 1;
+        e->timeval = *tv;
+
+        pa_mainloop_wakeup(e->mainloop);
+    } else
+        e->enabled = 0;
+}
+
+static void mainloop_time_free(pa_time_event *e) {
+    assert(e);
+
+    e->dead = e->mainloop->time_events_scan_dead = 1;
+
+    /* no wakeup needed here. Think about it! */
+}
+
+static void mainloop_time_set_destroy(pa_time_event *e, void (*callback)(pa_mainloop_api*a, pa_time_event *e, void *userdata)) {
+    assert(e);
+    e->destroy_callback = callback;
+}
+
+/* quit() */
+
+static void mainloop_quit(pa_mainloop_api*a, int retval) {
+    pa_mainloop *m;
+    assert(a && a->userdata);
+    m = a->userdata;
+    assert(a == &m->api);
+
+    pa_mainloop_quit(m, retval);
+}
+    
+static const pa_mainloop_api vtable = {
+    .userdata = NULL,
+
+    .io_new= mainloop_io_new,
+    .io_enable= mainloop_io_enable,
+    .io_free= mainloop_io_free,
+    .io_set_destroy= mainloop_io_set_destroy,
+
+    .time_new = mainloop_time_new,
+    .time_restart = mainloop_time_restart,
+    .time_free = mainloop_time_free,
+    .time_set_destroy = mainloop_time_set_destroy,
+    
+    .defer_new = mainloop_defer_new,
+    .defer_enable = mainloop_defer_enable,
+    .defer_free = mainloop_defer_free,
+    .defer_set_destroy = mainloop_defer_set_destroy,
+    
+    .quit = mainloop_quit,
+};
+
+pa_mainloop *pa_mainloop_new(void) {
+    pa_mainloop *m;
+
+    m = pa_xmalloc(sizeof(pa_mainloop));
+
+    if (pipe(m->wakeup_pipe) < 0) {
+        pa_log_error(__FILE__": ERROR: cannot create wakeup pipe");
+        pa_xfree(m);
+        return NULL;
+    }
+
+    pa_make_nonblock_fd(m->wakeup_pipe[0]);
+    pa_make_nonblock_fd(m->wakeup_pipe[1]);
+
+    m->io_events = pa_idxset_new(NULL, NULL);
+    m->defer_events = pa_idxset_new(NULL, NULL);
+    m->time_events = pa_idxset_new(NULL, NULL);
+
+    assert(m->io_events && m->defer_events && m->time_events);
+
+    m->io_events_scan_dead = m->defer_events_scan_dead = m->time_events_scan_dead = 0;
+    
+    m->pollfds = NULL;
+    m->max_pollfds = m->n_pollfds = 0;
+    m->rebuild_pollfds = 1;
+
+    m->quit = m->retval = 0;
+
+    m->api = vtable;
+    m->api.userdata = m;
+
+    m->deferred_pending = 0;
+
+    m->state = STATE_PASSIVE;
+
+    m->poll_func = NULL;
+    m->poll_func_userdata = NULL;
+
+    m->retval = -1;
+    
+    return m;
+}
+
+static int io_foreach(void *p, uint32_t PA_GCC_UNUSED idx, int *del, void*userdata) {
+    pa_io_event *e = p;
+    int *all = userdata;
+    assert(e && del && all);
+
+    if (!*all && !e->dead)
+        return 0;
+    
+    if (e->destroy_callback)
+        e->destroy_callback(&e->mainloop->api, e, e->userdata);
+    pa_xfree(e);
+    *del = 1;
+    return 0;
+}
+
+static int time_foreach(void *p, uint32_t PA_GCC_UNUSED idx, int *del, void*userdata) {
+    pa_time_event *e = p;
+    int *all = userdata;
+    assert(e && del && all);
+
+    if (!*all && !e->dead)
+        return 0;
+    
+    if (e->destroy_callback)
+        e->destroy_callback(&e->mainloop->api, e, e->userdata);
+    pa_xfree(e);
+    *del = 1;
+    return 0;
+}
+
+static int defer_foreach(void *p, PA_GCC_UNUSED uint32_t idx, int *del, void*userdata) {
+    pa_defer_event *e = p;
+    int *all = userdata;
+    assert(e && del && all);
+
+    if (!*all && !e->dead)
+        return 0;
+    
+    if (e->destroy_callback)
+        e->destroy_callback(&e->mainloop->api, e, e->userdata);
+    pa_xfree(e);
+    *del = 1;
+    return 0;
+}
+
+void pa_mainloop_free(pa_mainloop* m) {
+    int all = 1;
+    assert(m);
+
+    pa_idxset_foreach(m->io_events, io_foreach, &all);
+    pa_idxset_foreach(m->time_events, time_foreach, &all);
+    pa_idxset_foreach(m->defer_events, defer_foreach, &all);
+
+    pa_idxset_free(m->io_events, NULL, NULL);
+    pa_idxset_free(m->time_events, NULL, NULL);
+    pa_idxset_free(m->defer_events, NULL, NULL);
+
+    pa_xfree(m->pollfds);
+
+    if (m->wakeup_pipe[0] >= 0)
+        close(m->wakeup_pipe[0]);
+    if (m->wakeup_pipe[1] >= 0)
+        close(m->wakeup_pipe[1]);
+
+    pa_xfree(m);
+}
+
+static void scan_dead(pa_mainloop *m) {
+    int all = 0;
+    assert(m);
+
+    if (m->io_events_scan_dead)
+        pa_idxset_foreach(m->io_events, io_foreach, &all);
+    if (m->time_events_scan_dead)
+        pa_idxset_foreach(m->time_events, time_foreach, &all);
+    if (m->defer_events_scan_dead)
+        pa_idxset_foreach(m->defer_events, defer_foreach, &all);
+
+    m->io_events_scan_dead = m->time_events_scan_dead = m->defer_events_scan_dead = 0;
+}
+
+static void rebuild_pollfds(pa_mainloop *m) {
+    pa_io_event*e;
+    struct pollfd *p;
+    uint32_t idx = PA_IDXSET_INVALID;
+    unsigned l;
+
+    l = pa_idxset_size(m->io_events) + 1;
+    if (m->max_pollfds < l) {
+        m->pollfds = pa_xrealloc(m->pollfds, sizeof(struct pollfd)*l);
+        m->max_pollfds = l;
+    }
+
+    m->n_pollfds = 0;
+    p = m->pollfds;
+
+    if (m->wakeup_pipe[0] >= 0) {
+        m->pollfds[0].fd = m->wakeup_pipe[0];
+        m->pollfds[0].events = POLLIN;
+        m->pollfds[0].revents = 0;
+        p++;
+        m->n_pollfds++;
+    }
+
+    for (e = pa_idxset_first(m->io_events, &idx); e; e = pa_idxset_next(m->io_events, &idx)) {
+        if (e->dead) {
+            e->pollfd = NULL;
+            continue;
+        }
+
+        e->pollfd = p;
+        p->fd = e->fd;
+        p->events =
+            ((e->events & PA_IO_EVENT_INPUT) ? POLLIN : 0) |
+            ((e->events & PA_IO_EVENT_OUTPUT) ? POLLOUT : 0) |
+            POLLHUP |
+            POLLERR;
+        p->revents = 0;
+
+        p++;
+        m->n_pollfds++;
+    }
+
+    m->rebuild_pollfds = 0;
+}
+
+static int dispatch_pollfds(pa_mainloop *m) {
+    uint32_t idx = PA_IDXSET_INVALID;
+    pa_io_event *e;
+    int r = 0;
+
+    for (e = pa_idxset_first(m->io_events, &idx); e && !m->quit; e = pa_idxset_next(m->io_events, &idx)) {
+        if (e->dead || !e->pollfd || !e->pollfd->revents)
+            continue;
+        
+        assert(e->pollfd->fd == e->fd && e->callback);
+        e->callback(&m->api, e, e->fd,
+                    (e->pollfd->revents & POLLHUP ? PA_IO_EVENT_HANGUP : 0) |
+                    (e->pollfd->revents & POLLIN ? PA_IO_EVENT_INPUT : 0) |
+                    (e->pollfd->revents & POLLOUT ? PA_IO_EVENT_OUTPUT : 0) |
+                    (e->pollfd->revents & POLLERR ? PA_IO_EVENT_ERROR : 0),
+                    e->userdata);
+        e->pollfd->revents = 0;
+        r++;
+    }
+
+    return r;
+}
+
+static int dispatch_defer(pa_mainloop *m) {
+    uint32_t idx;
+    pa_defer_event *e;
+    int r = 0;
+
+    if (!m->deferred_pending)
+        return 0;
+
+    for (e = pa_idxset_first(m->defer_events, &idx); e && !m->quit; e = pa_idxset_next(m->defer_events, &idx)) {
+        if (e->dead || !e->enabled)
+            continue;
+ 
+        assert(e->callback);
+        e->callback(&m->api, e, e->userdata);
+        r++;
+    }
+
+    return r;
+}
+
+static int calc_next_timeout(pa_mainloop *m) {
+    uint32_t idx;
+    pa_time_event *e;
+    struct timeval now;
+    int t = -1;
+    int got_time = 0;
+
+    if (pa_idxset_isempty(m->time_events))
+        return -1;
+
+    for (e = pa_idxset_first(m->time_events, &idx); e; e = pa_idxset_next(m->time_events, &idx)) {
+        int tmp;
+        
+        if (e->dead || !e->enabled)
+            continue;
+
+        /* Let's save a system call */
+        if (!got_time) {
+            pa_gettimeofday(&now);
+            got_time = 1;
+        }
+
+        if (e->timeval.tv_sec < now.tv_sec || (e->timeval.tv_sec == now.tv_sec && e->timeval.tv_usec <= now.tv_usec)) 
+            return 0;
+
+        tmp = (e->timeval.tv_sec - now.tv_sec)*1000;
+            
+        if (e->timeval.tv_usec > now.tv_usec)
+            tmp += (e->timeval.tv_usec - now.tv_usec)/1000;
+        else
+            tmp -= (now.tv_usec - e->timeval.tv_usec)/1000;
+
+        if (tmp == 0)
+            return 0;
+        else if (t == -1 || tmp < t)
+            t = tmp;
+    }
+
+    return t;
+}
+
+static int dispatch_timeout(pa_mainloop *m) {
+    uint32_t idx;
+    pa_time_event *e;
+    struct timeval now;
+    int got_time = 0;
+    int r = 0;
+    assert(m);
+
+    if (pa_idxset_isempty(m->time_events))
+        return 0;
+
+    for (e = pa_idxset_first(m->time_events, &idx); e && !m->quit; e = pa_idxset_next(m->time_events, &idx)) {
+        
+        if (e->dead || !e->enabled)
+            continue;
+
+        /* Let's save a system call */
+        if (!got_time) {
+            pa_gettimeofday(&now);
+            got_time = 1;
+        }
+        
+        if (e->timeval.tv_sec < now.tv_sec || (e->timeval.tv_sec == now.tv_sec && e->timeval.tv_usec <= now.tv_usec)) {
+            assert(e->callback);
+
+            e->enabled = 0;
+            e->callback(&m->api, e, &e->timeval, e->userdata);
+
+            r++;
+        }
+    }
+
+    return r;
+}
+
+void pa_mainloop_wakeup(pa_mainloop *m) {
+    char c = 'W';
+    assert(m);
+
+    if (m->wakeup_pipe[1] >= 0)
+        pa_write(m->wakeup_pipe[1], &c, sizeof(c));
+}
+
+static void clear_wakeup(pa_mainloop *m) {
+    char c[10];
+
+    assert(m);
+
+    if (m->wakeup_pipe[0] < 0)
+        return;
+
+    while (pa_read(m->wakeup_pipe[0], &c, sizeof(c)) == sizeof(c));
+}
+
+int pa_mainloop_prepare(pa_mainloop *m, int timeout) {
+    assert(m);
+    assert(m->state == STATE_PASSIVE);
+
+    clear_wakeup(m);
+    scan_dead(m);
+
+    if (m->quit)
+        goto quit;
+
+    if (!m->deferred_pending) {
+    
+        if (m->rebuild_pollfds)
+            rebuild_pollfds(m);
+        
+        m->prepared_timeout = calc_next_timeout(m);
+        if (timeout >= 0 && (timeout < m->prepared_timeout || m->prepared_timeout < 0))
+            m->prepared_timeout = timeout;
+    }
+
+    m->state = STATE_PREPARED;
+    return 0;
+
+quit:
+    m->state = STATE_QUIT;
+    return -2;
+}
+
+int pa_mainloop_poll(pa_mainloop *m) {
+    int r;
+
+    assert(m);
+    assert(m->state == STATE_PREPARED);
+
+    if (m->quit)
+        goto quit;
+
+    m->state = STATE_POLLING;
+
+    if (m->deferred_pending)
+        r = 0;
+    else {
+        if (m->poll_func)
+            r = m->poll_func(m->pollfds, m->n_pollfds, m->prepared_timeout, m->poll_func_userdata);
+        else
+            r = poll(m->pollfds, m->n_pollfds, m->prepared_timeout);
+
+        if (r < 0) {
+            if (errno == EINTR)
+                r = 0;
+            else
+                pa_log(__FILE__": poll(): %s", pa_cstrerror(errno));
+        }
+    }
+
+    m->state = r < 0 ? STATE_PASSIVE : STATE_POLLED;
+    return r;
+
+quit:
+    m->state = STATE_QUIT;
+    return -2;
+}
+
+int pa_mainloop_dispatch(pa_mainloop *m) {
+    int dispatched = 0;
+
+    assert(m);
+    assert(m->state == STATE_POLLED);
+
+    if (m->quit)
+        goto quit;
+    
+    if (m->deferred_pending)
+        dispatched += dispatch_defer(m);
+    else {
+        dispatched += dispatch_timeout(m);
+        
+        if (m->quit)
+            goto quit;
+        
+        dispatched += dispatch_pollfds(m);
+
+    }
+    
+    if (m->quit)
+        goto quit;
+    
+    m->state = STATE_PASSIVE;
+
+    return dispatched;
+
+quit:
+    m->state = STATE_QUIT;
+    return -2;
+}
+
+int pa_mainloop_get_retval(pa_mainloop *m) {
+    assert(m);
+    return m->retval;
+}
+
+int pa_mainloop_iterate(pa_mainloop *m, int block, int *retval) {
+    int r;
+    assert(m);
+
+    if ((r = pa_mainloop_prepare(m, block ? -1 : 0)) < 0)
+        goto quit;
+
+    if ((r = pa_mainloop_poll(m)) < 0)
+        goto quit;
+
+    if ((r = pa_mainloop_dispatch(m)) < 0)
+        goto quit;
+
+    return r;
+
+quit:
+    
+    if ((r == -2) && retval)
+        *retval = pa_mainloop_get_retval(m);
+    return r;
+}
+
+int pa_mainloop_run(pa_mainloop *m, int *retval) {
+    int r;
+    
+    while ((r = pa_mainloop_iterate(m, 1, retval)) >= 0);
+
+    if (r == -2)
+        return 1;
+    else if (r < 0)
+        return -1;
+    else
+        return 0;
+}
+
+void pa_mainloop_quit(pa_mainloop *m, int retval) {
+    assert(m);
+
+    m->quit = 1;
+    m->retval = retval;
+    pa_mainloop_wakeup(m);
+}
+
+pa_mainloop_api* pa_mainloop_get_api(pa_mainloop*m) {
+    assert(m);
+    return &m->api;
+}
+
+void pa_mainloop_set_poll_func(pa_mainloop *m, pa_poll_func poll_func, void *userdata) {
+    assert(m);
+
+    m->poll_func = poll_func;
+    m->poll_func_userdata = userdata;
+}
+
+
+#if 0
+void pa_mainloop_dump(pa_mainloop *m) {
+    assert(m);
+
+    pa_log(__FILE__": Dumping mainloop sources START");
+    
+    {
+        uint32_t idx = PA_IDXSET_INVALID;
+        pa_io_event *e;
+        for (e = pa_idxset_first(m->io_events, &idx); e; e = pa_idxset_next(m->io_events, &idx)) {
+            if (e->dead)
+                continue;
+            
+            pa_log(__FILE__": kind=io fd=%i events=%i callback=%p userdata=%p", e->fd, (int) e->events, (void*) e->callback, (void*) e->userdata);
+        }
+    }
+    {
+        uint32_t idx = PA_IDXSET_INVALID;
+        pa_defer_event *e;
+        for (e = pa_idxset_first(m->defer_events, &idx); e; e = pa_idxset_next(m->defer_events, &idx)) {
+            if (e->dead)
+                continue;
+            
+            pa_log(__FILE__": kind=defer enabled=%i callback=%p userdata=%p", e->enabled, (void*) e->callback, (void*) e->userdata);
+        }
+    }
+    {
+        uint32_t idx = PA_IDXSET_INVALID;
+        pa_time_event *e;
+        for (e = pa_idxset_first(m->time_events, &idx); e; e = pa_idxset_next(m->time_events, &idx)) {
+            if (e->dead)
+                continue;
+            
+            pa_log(__FILE__": kind=time enabled=%i time=%lu.%lu callback=%p userdata=%p", e->enabled, (unsigned long) e->timeval.tv_sec, (unsigned long) e->timeval.tv_usec, (void*) e->callback, (void*) e->userdata);
+        }
+    }
+
+    pa_log(__FILE__": Dumping mainloop sources STOP");
+
+}
+#endif