posix_timers.cpp revision 4b558f50a42c97d461f1dede5aaaae490ea99e2e
14b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes/* 24b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * Copyright (C) 2008 The Android Open Source Project 34b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * All rights reserved. 44b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * 54b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * Redistribution and use in source and binary forms, with or without 64b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * modification, are permitted provided that the following conditions 74b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * are met: 84b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * * Redistributions of source code must retain the above copyright 94b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * notice, this list of conditions and the following disclaimer. 104b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * * Redistributions in binary form must reproduce the above copyright 114b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * notice, this list of conditions and the following disclaimer in 124b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * the documentation and/or other materials provided with the 134b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * distribution. 144b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * 154b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 164b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 174b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 184b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 194b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 204b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 214b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 224b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 234b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 244b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 254b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 264b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes * SUCH DAMAGE. 274b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes */ 284b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 294b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include "pthread_internal.h" 304b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include "private/bionic_futex.h" 314b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include "private/bionic_pthread.h" 324b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include "private/kernel_sigset_t.h" 334b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 344b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include <errno.h> 354b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include <stdio.h> 364b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes#include <string.h> 374b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 384b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// System calls. 394b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesextern "C" int __rt_sigtimedwait(const sigset_t*, siginfo_t*, const struct timespec*, size_t); 404b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesextern "C" int __timer_create(clockid_t, sigevent*, __kernel_timer_t*); 414b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesextern "C" int __timer_delete(__kernel_timer_t); 424b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesextern "C" int __timer_getoverrun(__kernel_timer_t); 434b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesextern "C" int __timer_gettime(__kernel_timer_t, itimerspec*); 444b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesextern "C" int __timer_settime(__kernel_timer_t, int, const itimerspec*, itimerspec*); 454b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 464b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// Most POSIX timers are handled directly by the kernel. We translate SIGEV_THREAD timers 474b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// into SIGEV_THREAD_ID timers so the kernel handles all the time-related stuff and we just 484b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// need to worry about running user code on a thread. 494b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 504b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// We can't use SIGALRM because too many other C library functions throw that around, and since 514b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// they don't send to a specific thread, all threads are eligible to handle the signal and we can 524b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// end up with one of our POSIX timer threads handling it (meaning that the intended recipient 534b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// doesn't). glibc uses SIGRTMIN for its POSIX timer implementation, so in the absence of any 544b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// reason to use anything else, we use that too. 554b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesstatic const int TIMER_SIGNAL = SIGRTMIN; 564b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 574b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesstruct PosixTimer { 584b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes __kernel_timer_t kernel_timer_id; 594b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 604b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes int sigev_notify; 614b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 624b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // These fields are only needed for a SIGEV_THREAD timer. 634b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_t callback_thread; 644b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes void (*callback)(sigval_t); 654b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes sigval_t callback_argument; 664b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes volatile int exiting; 674b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes}; 684b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 694b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesstatic __kernel_timer_t to_kernel_timer_id(timer_t timer) { 704b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return reinterpret_cast<PosixTimer*>(timer)->kernel_timer_id; 714b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 724b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 734b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesstatic void* __timer_thread_start(void* arg) { 744b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes PosixTimer* timer = reinterpret_cast<PosixTimer*>(arg); 754b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 764b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes kernel_sigset_t sigset; 774b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes sigaddset(sigset.get(), TIMER_SIGNAL); 784b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 794b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes while (true) { 804b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // Wait for a signal... 814b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes siginfo_t si; 824b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes memset(&si, 0, sizeof(si)); 834b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes int rc = __rt_sigtimedwait(sigset.get(), &si, NULL, sizeof(sigset)); 844b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (rc == -1) { 854b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes continue; 864b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 874b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 884b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (si.si_code == SI_TIMER) { 894b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // This signal was sent because a timer fired, so call the callback. 904b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes timer->callback(timer->callback_argument); 914b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } else if (si.si_code == SI_TKILL) { 924b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // This signal was sent because someone wants us to exit. 934b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes timer->exiting = 1; 944b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes __futex_wake(&timer->exiting, INT32_MAX); 954b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return NULL; 964b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 974b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 984b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 994b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1004b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesstatic void __timer_thread_stop(PosixTimer* timer) { 1014b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_kill(timer->callback_thread, TIMER_SIGNAL); 1024b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1034b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // We can't pthread_join because POSIX says "the threads created in response to a timer 1044b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // expiration are created detached, or in an unspecified way if the thread attribute's 1054b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // detachstate is PTHREAD_CREATE_JOINABLE". 1064b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes while (timer->exiting == 0) { 1074b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes __futex_wait(&timer->exiting, 0, NULL); 1084b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1094b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 1104b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1114b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// http://pubs.opengroup.org/onlinepubs/9699919799/functions/timer_create.html 1124b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesint timer_create(clockid_t clock_id, sigevent* evp, timer_t* timer_id) { 1134b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes PosixTimer* new_timer = reinterpret_cast<PosixTimer*>(malloc(sizeof(PosixTimer))); 1144b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (new_timer == NULL) { 1154b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return -1; 1164b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1174b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1184b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes new_timer->sigev_notify = (evp == NULL) ? SIGEV_SIGNAL : evp->sigev_notify; 1194b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1204b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // If not a SIGEV_THREAD timer, the kernel can handle it without our help. 1214b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (new_timer->sigev_notify != SIGEV_THREAD) { 1224b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (__timer_create(clock_id, evp, &new_timer->kernel_timer_id) == -1) { 1234b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes free(new_timer); 1244b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return -1; 1254b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1264b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1274b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes *timer_id = new_timer; 1284b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return 0; 1294b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1304b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1314b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // Otherwise, this must be SIGEV_THREAD timer... 1324b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes new_timer->callback = evp->sigev_notify_function; 1334b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes new_timer->callback_argument = evp->sigev_value; 1344b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes new_timer->exiting = 0; 1354b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1364b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // Check arguments that the kernel doesn't care about but we do. 1374b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (new_timer->callback == NULL) { 1384b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes free(new_timer); 1394b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes errno = EINVAL; 1404b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return -1; 1414b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1424b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1434b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // Create this timer's thread. 1444b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_attr_t thread_attributes; 1454b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (evp->sigev_notify_attributes == NULL) { 1464b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_attr_init(&thread_attributes); 1474b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } else { 1484b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes thread_attributes = *reinterpret_cast<pthread_attr_t*>(evp->sigev_notify_attributes); 1494b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1504b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_attr_setdetachstate(&thread_attributes, PTHREAD_CREATE_DETACHED); 1514b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1524b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // We start the thread with TIMER_SIGNAL blocked by blocking the signal here and letting it 1534b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // inherit. If it tried to block the signal itself, there would be a race. 1544b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes kernel_sigset_t sigset; 1554b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes sigaddset(sigset.get(), TIMER_SIGNAL); 1564b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes kernel_sigset_t old_sigset; 1574b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_sigmask(SIG_BLOCK, sigset.get(), old_sigset.get()); 1584b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1594b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes int rc = pthread_create(&new_timer->callback_thread, &thread_attributes, __timer_thread_start, new_timer); 1604b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1614b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_sigmask(SIG_SETMASK, old_sigset.get(), NULL); 1624b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1634b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (rc != 0) { 1644b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes free(new_timer); 1654b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes errno = rc; 1664b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return -1; 1674b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1684b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1694b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes sigevent se = *evp; 1704b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes se.sigev_signo = TIMER_SIGNAL; 1714b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes se.sigev_notify = SIGEV_THREAD_ID; 1724b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes se.sigev_notify_thread_id = __pthread_gettid(new_timer->callback_thread); 1734b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (__timer_create(clock_id, &se, &new_timer->kernel_timer_id) == -1) { 1744b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes __timer_thread_stop(new_timer); 1754b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes free(new_timer); 1764b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return -1; 1774b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1784b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1794b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // Give the thread a meaningful name. 1804b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // It can't do this itself because the kernel timer isn't created until after it's running. 1814b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes char name[32]; 1824b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes snprintf(name, sizeof(name), "POSIX interval timer %d", to_kernel_timer_id(new_timer)); 1834b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes pthread_setname_np(new_timer->callback_thread, name); 1844b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1854b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes *timer_id = new_timer; 1864b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return 0; 1874b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 1884b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1894b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// http://pubs.opengroup.org/onlinepubs/9699919799/functions/timer_delete.html 1904b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesint timer_delete(timer_t id) { 1914b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes int rc = __timer_delete(to_kernel_timer_id(id)); 1924b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (rc == -1) { 1934b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return -1; 1944b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 1954b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1964b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes PosixTimer* timer = reinterpret_cast<PosixTimer*>(id); 1974b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 1984b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes // Make sure the timer's thread has exited before we free the timer data. 1994b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes if (timer->sigev_notify == SIGEV_THREAD) { 2004b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes __timer_thread_stop(timer); 2014b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes } 2024b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 2034b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes free(timer); 2044b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 2054b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return 0; 2064b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 2074b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 2084b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// http://pubs.opengroup.org/onlinepubs/9699919799/functions/timer_getoverrun.html 2094b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesint timer_gettime(timer_t id, itimerspec* ts) { 2104b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return __timer_gettime(to_kernel_timer_id(id), ts); 2114b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 2124b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 2134b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// http://pubs.opengroup.org/onlinepubs/9699919799/functions/timer_getoverrun.html 2144b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesint timer_settime(timer_t id, int flags, const itimerspec* ts, itimerspec* ots) { 2154b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return __timer_settime(to_kernel_timer_id(id), flags, ts, ots); 2164b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 2174b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes 2184b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes// http://pubs.opengroup.org/onlinepubs/9699919799/functions/timer_getoverrun.html 2194b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughesint timer_getoverrun(timer_t id) { 2204b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes return __timer_getoverrun(to_kernel_timer_id(id)); 2214b558f50a42c97d461f1dede5aaaae490ea99e2eElliott Hughes} 222