static void thread_func2(void *k) { int fd; fail_unless((fd = pa_autospawn_lock_init()) >= 0); pa_log("%i, Trying to acquire lock.", PA_PTR_TO_INT(k)); for (;;) { struct pollfd pollfd; int j; if ((j = pa_autospawn_lock_acquire(false)) > 0) break; fail_unless(j == 0); memset(&pollfd, 0, sizeof(pollfd)); pollfd.fd = fd; pollfd.events = POLLIN; fail_unless(pa_poll(&pollfd, 1, -1) == 1); pa_log("%i, woke up", PA_PTR_TO_INT(k)); } pa_log("%i, Got the lock!, Sleeping for 5s", PA_PTR_TO_INT(k)); pa_msleep(5000); pa_log("%i, Releasing", PA_PTR_TO_INT(k)); pa_autospawn_lock_release(); pa_autospawn_lock_done(false); }
static int poll_func(struct pollfd *ufds, unsigned long nfds, int timeout, void *userdata) { pa_mutex *mutex = userdata; int r; pa_assert(mutex); /* Before entering poll() we unlock the mutex, so that * avahi_simple_poll_quit() can succeed from another thread. */ pa_mutex_unlock(mutex); r = pa_poll(ufds, nfds, timeout); pa_mutex_lock(mutex); return r; }
static void wait_for_ping(void) { ssize_t s; char x; struct pollfd pfd; int k; pa_assert(pipe_fd[0] >= 0); memset(&pfd, 0, sizeof(pfd)); pfd.fd = pipe_fd[0]; pfd.events = POLLIN; if ((k = pa_poll(&pfd, 1, -1)) != 1) { pa_assert(k < 0); pa_assert(errno == EINTR); } else if ((s = read(pipe_fd[0], &x, 1)) != 1) { pa_assert(s < 0); pa_assert(errno == EAGAIN); } }
int main(int argc, char*argv[]) { pid_t pid; int fd = -1; int ret = 1, i; struct sockaddr_un sa; char *ibuf = NULL; char *obuf = NULL; size_t buf_size, ibuf_size, ibuf_index, ibuf_length, obuf_size, obuf_index, obuf_length; char *cli; bool ibuf_eof, obuf_eof, ibuf_closed, obuf_closed; struct pollfd pollfd[3]; struct pollfd *watch_socket, *watch_stdin, *watch_stdout; int stdin_type = 0, stdout_type = 0, fd_type = 0; char *bn = NULL; int c; static const struct option long_options[] = { {"version", 0, NULL, ARG_VERSION}, {"help", 0, NULL, 'h'}, {NULL, 0, NULL, 0} }; setlocale(LC_ALL, ""); #ifdef ENABLE_NLS bindtextdomain(GETTEXT_PACKAGE, PULSE_LOCALEDIR); #endif bn = pa_path_get_filename(argv[0]); while ((c = getopt_long(argc, argv, "h", long_options, NULL)) != -1) { switch (c) { case 'h' : help(bn); ret = 0; goto quit; case ARG_VERSION: printf(_("pacmd %s\n" "Compiled with libpulse %s\n" "Linked with libpulse %s\n"), PACKAGE_VERSION, pa_get_headers_version(), pa_get_library_version()); ret = 0; goto quit; default: goto quit; } } if (pa_pid_file_check_running(&pid, "pulseaudio") < 0) { pa_log(_("No PulseAudio daemon running, or not running as session daemon.")); goto quit; } if ((fd = pa_socket_cloexec(PF_UNIX, SOCK_STREAM, 0)) < 0) { pa_log(_("socket(PF_UNIX, SOCK_STREAM, 0): %s"), strerror(errno)); goto quit; } pa_zero(sa); sa.sun_family = AF_UNIX; if (!(cli = pa_runtime_path("cli"))) goto quit; pa_strlcpy(sa.sun_path, cli, sizeof(sa.sun_path)); pa_xfree(cli); for (i = 0; i < 5; i++) { int r; if ((r = connect(fd, (struct sockaddr*) &sa, sizeof(sa))) < 0 && (errno != ECONNREFUSED && errno != ENOENT)) { pa_log(_("connect(): %s"), strerror(errno)); goto quit; } if (r >= 0) break; if (pa_pid_file_kill(SIGUSR2, NULL, "pulseaudio") < 0) { pa_log(_("Failed to kill PulseAudio daemon.")); goto quit; } pa_msleep(300); } if (i >= 5) { pa_log(_("Daemon not responding.")); goto quit; } buf_size = pa_pipe_buf(fd); ibuf_size = PA_MIN(buf_size, pa_pipe_buf(STDIN_FILENO)); ibuf = pa_xmalloc(ibuf_size); obuf_size = PA_MIN(buf_size, pa_pipe_buf(STDOUT_FILENO)); obuf = pa_xmalloc(obuf_size); ibuf_index = ibuf_length = obuf_index = obuf_length = 0; ibuf_eof = obuf_eof = ibuf_closed = obuf_closed = false; if (argc > 1) { for (i = 1; i < argc; i++) { size_t k; k = PA_MIN(ibuf_size - ibuf_length, strlen(argv[i])); memcpy(ibuf + ibuf_length, argv[i], k); ibuf_length += k; if (ibuf_length < ibuf_size) { ibuf[ibuf_length] = i < argc-1 ? ' ' : '\n'; ibuf_length++; } } ibuf_eof = true; } if (!ibuf_eof && isatty(STDIN_FILENO)) { /* send hello to enable interactive mode (welcome message, prompt) */ if (pa_write(fd, "hello\n", 6, &fd_type) < 0) { pa_log(_("write(): %s"), strerror(errno)); goto quit; } } for (;;) { struct pollfd *p; if (ibuf_eof && obuf_eof && ibuf_length <= 0 && obuf_length <= 0) break; if (ibuf_length <= 0 && ibuf_eof && !ibuf_closed) { shutdown(fd, SHUT_WR); ibuf_closed = true; } if (obuf_length <= 0 && obuf_eof && !obuf_closed) { shutdown(fd, SHUT_RD); obuf_closed = true; } pa_zero(pollfd); p = pollfd; if (ibuf_length > 0 || (!obuf_eof && obuf_length <= 0)) { watch_socket = p++; watch_socket->fd = fd; watch_socket->events = (ibuf_length > 0 ? POLLOUT : 0) | (!obuf_eof && obuf_length <= 0 ? POLLIN : 0); } else watch_socket = NULL; if (!ibuf_eof && ibuf_length <= 0) { watch_stdin = p++; watch_stdin->fd = STDIN_FILENO; watch_stdin->events = POLLIN; } else watch_stdin = NULL; if (obuf_length > 0) { watch_stdout = p++; watch_stdout->fd = STDOUT_FILENO; watch_stdout->events = POLLOUT; } else watch_stdout = NULL; if (pa_poll(pollfd, p-pollfd, -1) < 0) { if (errno == EINTR) continue; pa_log(_("poll(): %s"), strerror(errno)); goto quit; } if (watch_stdin) { if (watch_stdin->revents & POLLIN) { ssize_t r; pa_assert(ibuf_length <= 0); if ((r = pa_read(STDIN_FILENO, ibuf, ibuf_size, &stdin_type)) <= 0) { if (r < 0) { pa_log(_("read(): %s"), strerror(errno)); goto quit; } ibuf_eof = true; } else { ibuf_length = (size_t) r; ibuf_index = 0; } } else if (watch_stdin->revents & POLLHUP) ibuf_eof = true; } if (watch_socket) { if (watch_socket->revents & POLLIN) { ssize_t r; pa_assert(obuf_length <= 0); if ((r = pa_read(fd, obuf, obuf_size, &fd_type)) <= 0) { if (r < 0) { pa_log(_("read(): %s"), strerror(errno)); goto quit; } obuf_eof = true; } else { obuf_length = (size_t) r; obuf_index = 0; } } else if (watch_socket->revents & POLLHUP) obuf_eof = true; } if (watch_stdout) { if (watch_stdout->revents & POLLHUP) { obuf_eof = true; obuf_length = 0; } else if (watch_stdout->revents & POLLOUT) { ssize_t r; pa_assert(obuf_length > 0); if ((r = pa_write(STDOUT_FILENO, obuf + obuf_index, obuf_length, &stdout_type)) < 0) { pa_log(_("write(): %s"), strerror(errno)); goto quit; } obuf_length -= (size_t) r; obuf_index += obuf_index; } } if (watch_socket) { if (watch_socket->revents & POLLHUP) { ibuf_eof = true; ibuf_length = 0; } if (watch_socket->revents & POLLOUT) { ssize_t r; pa_assert(ibuf_length > 0); if ((r = pa_write(fd, ibuf + ibuf_index, ibuf_length, &fd_type)) < 0) { pa_log(_("write(): %s"), strerror(errno)); goto quit; } ibuf_length -= (size_t) r; ibuf_index += obuf_index; } } } ret = 0; quit: if (fd >= 0) pa_close(fd); pa_xfree(obuf); pa_xfree(ibuf); return ret; }