/* * APM events can be requested direclty from /dev/apm */ static int bsdPMGetEventFromOS(int kq, pmEvent *events, int num) { struct kevent ev; int i, result; struct timespec ts = { 0, 0 }; for (i = 0; i < num; i++) { result = kevent(kq, NULL, 0, &ev, 1, &ts); if (result == 0 || APM_EVENT_TYPE(ev.data) == APM_NOEVENT) { /* no event */ break; } else if (result < 0) { xf86Msg(X_WARNING, "bsdPMGetEventFromOS: kevent returns" " errno = %d\n", errno); break; } events[i] = bsdToXF86(APM_EVENT_TYPE(ev.data)); } return i; }
/* thread doing kqueue() on apm device */ static gpointer up_backend_apm_event_thread(gpointer object) { int kq, nevents; struct kevent ev; struct timespec ts = {600, 0}, sts = {0, 0}; UpBackend *backend; g_return_val_if_fail (UP_IS_BACKEND (object), NULL); backend = UP_BACKEND (object); g_debug("setting up apm thread"); kq = kqueue(); if (kq <= 0) g_error("kqueue"); EV_SET(&ev, up_apm_get_fd(), EVFILT_READ, EV_ADD | EV_ENABLE | EV_CLEAR, 0, 0, NULL); nevents = 1; if (kevent(kq, &ev, nevents, NULL, 0, &sts) < 0) g_error("kevent"); /* blocking wait on kqueue */ for (;;) { int rv; /* 10mn timeout */ sts = ts; if ((rv = kevent(kq, NULL, 0, &ev, 1, &sts)) < 0) break; if (!rv) continue; if (ev.ident == (guint) up_apm_get_fd() && APM_EVENT_TYPE(ev.data) == APM_POWER_CHANGE ) { /* g_idle_add the callback */ g_idle_add((GSourceFunc) up_backend_apm_powerchange_event_cb, backend); } } return NULL; /* shouldnt be reached ? */ }
int main(int argc, char *argv[]) { const char *fname = apmdev; int ctl_fd, sock_fd, ch, suspends, standbys, resumes; int statonly = 0; int powerstatus = 0, powerbak = 0, powerchange = 0; int noacsleep = 0; struct timespec ts = {TIMO, 0}, sts = {0, 0}; struct apm_power_info pinfo; time_t apmtimeout = 0; const char *sockname = sockfile; int kq, nchanges; struct kevent ev[2]; int ncpu_mib[2] = { CTL_HW, HW_NCPU }; int ncpu; size_t ncpu_sz = sizeof(ncpu); while ((ch = getopt(argc, argv, "aACdHLsf:t:S:")) != -1) switch(ch) { case 'a': noacsleep = 1; break; case 'd': debug = 1; break; case 'f': fname = optarg; break; case 'S': sockname = optarg; break; case 't': ts.tv_sec = strtoul(optarg, NULL, 0); if (ts.tv_sec == 0) usage(); break; case 's': /* status only */ statonly = 1; break; case 'A': if (doperf != PERF_NONE) usage(); doperf = PERF_AUTO; break; case 'C': if (doperf != PERF_NONE) usage(); doperf = PERF_COOL; break; case 'L': if (doperf != PERF_NONE) usage(); doperf = PERF_MANUAL; setperf(PERFMIN); break; case 'H': if (doperf != PERF_NONE) usage(); doperf = PERF_MANUAL; setperf(PERFMAX); break; case '?': default: usage(); } argc -= optind; argv += optind; if (argc != 0) usage(); if (doperf == PERF_NONE) doperf = PERF_MANUAL; if (debug) openlog(__progname, LOG_CONS, LOG_LOCAL1); else { if (daemon(0, 0) < 0) error("failed to daemonize", NULL); openlog(__progname, LOG_CONS, LOG_DAEMON); setlogmask(LOG_UPTO(LOG_NOTICE)); } (void) signal(SIGTERM, sigexit); (void) signal(SIGHUP, sigexit); (void) signal(SIGINT, sigexit); if ((ctl_fd = open(fname, O_RDWR)) == -1) { if (errno != ENXIO && errno != ENOENT) error("cannot open device file `%s'", fname); } else if (fcntl(ctl_fd, F_SETFD, FD_CLOEXEC) == -1) error("cannot set close-on-exec for `%s'", fname); sock_fd = bind_socket(sockname); if (fcntl(sock_fd, F_SETFD, FD_CLOEXEC) == -1) error("cannot set close-on-exec for the socket", NULL); power_status(ctl_fd, 1, &pinfo); if (statonly) exit(0); set_driver_messages(ctl_fd, APM_PRINT_OFF); kq = kqueue(); if (kq <= 0) error("kqueue", NULL); EV_SET(&ev[0], sock_fd, EVFILT_READ, EV_ADD | EV_ENABLE | EV_CLEAR, 0, 0, NULL); if (ctl_fd == -1) nchanges = 1; else { EV_SET(&ev[1], ctl_fd, EVFILT_READ, EV_ADD | EV_ENABLE | EV_CLEAR, 0, 0, NULL); nchanges = 2; } if (kevent(kq, ev, nchanges, NULL, 0, &sts) < 0) error("kevent", NULL); if (sysctl(ncpu_mib, 2, &ncpu, &ncpu_sz, NULL, 0) < 0) error("cannot read hw.ncpu", NULL); if (doperf == PERF_AUTO || doperf == PERF_COOL) { setperf(0); setperf(100); } for (;;) { int rv; sts = ts; if (doperf == PERF_AUTO || doperf == PERF_COOL) { sts.tv_sec = 1; perf_status(&pinfo, ncpu); } apmtimeout += sts.tv_sec; if ((rv = kevent(kq, NULL, 0, ev, 1, &sts)) < 0) break; if (apmtimeout >= ts.tv_sec) { apmtimeout = 0; /* wakeup for timeout: take status */ powerbak = power_status(ctl_fd, 0, &pinfo); if (powerstatus != powerbak) { powerstatus = powerbak; powerchange = 1; } } if (!rv) continue; if (ev->ident == ctl_fd) { suspends = standbys = resumes = 0; syslog(LOG_DEBUG, "apmevent %04x index %d", (int)APM_EVENT_TYPE(ev->data), (int)APM_EVENT_INDEX(ev->data)); switch (APM_EVENT_TYPE(ev->data)) { case APM_SUSPEND_REQ: case APM_USER_SUSPEND_REQ: case APM_CRIT_SUSPEND_REQ: case APM_BATTERY_LOW: suspends++; break; case APM_USER_STANDBY_REQ: case APM_STANDBY_REQ: standbys++; break; #if 0 case APM_CANCEL: suspends = standbys = 0; break; #endif case APM_NORMAL_RESUME: case APM_CRIT_RESUME: case APM_SYS_STANDBY_RESUME: powerbak = power_status(ctl_fd, 0, &pinfo); if (powerstatus != powerbak) { powerstatus = powerbak; powerchange = 1; } resumes++; break; case APM_POWER_CHANGE: powerbak = power_status(ctl_fd, 0, &pinfo); if (powerstatus != powerbak) { powerstatus = powerbak; powerchange = 1; } break; default: ; } if ((standbys || suspends) && noacsleep && power_status(ctl_fd, 0, &pinfo)) syslog(LOG_DEBUG, "no! sleep! till brooklyn!"); else if (suspends) suspend(ctl_fd); else if (standbys) stand_by(ctl_fd); else if (resumes) { do_etc_file(_PATH_APM_ETC_RESUME); syslog(LOG_NOTICE, "system resumed from sleep"); } if (powerchange) { if (powerstatus) do_etc_file(_PATH_APM_ETC_POWERUP); else do_etc_file(_PATH_APM_ETC_POWERDOWN); powerchange = 0; } } else if (ev->ident == sock_fd) switch (handle_client(sock_fd, ctl_fd)) { case NORMAL: break; case SUSPENDING: suspend(ctl_fd); break; case STANDING_BY: stand_by(ctl_fd); break; case HIBERNATING: hibernate(ctl_fd); break; } } error("kevent loop", NULL); return 1; }