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genode/repos/libports/src/lib/qt5/qtbase/src/corelib/thread/qthread_genode.cpp

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/****************************************************************************
**
** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qthread.h"
#include "qplatformdefs.h"
#include <private/qcoreapplication_p.h>
#if defined(Q_OS_BLACKBERRY)
# include <private/qeventdispatcher_blackberry_p.h>
#else
# if !defined(QT_NO_GLIB)
# include "../kernel/qeventdispatcher_glib_p.h"
# endif
# include <private/qeventdispatcher_unix_p.h>
#endif
#include "qthreadstorage.h"
#include "qthread_p.h"
#include "qdebug.h"
#ifndef Q_OS_GENODE
#include <sched.h>
#include <errno.h>
#ifdef Q_OS_BSD4
#include <sys/sysctl.h>
#endif
#ifdef Q_OS_VXWORKS
# if (_WRS_VXWORKS_MAJOR > 6) || ((_WRS_VXWORKS_MAJOR == 6) && (_WRS_VXWORKS_MINOR >= 6))
# include <vxCpuLib.h>
# include <cpuset.h>
# define QT_VXWORKS_HAS_CPUSET
# endif
#endif
#ifdef Q_OS_HPUX
#include <sys/pstat.h>
#endif
#if defined(Q_OS_MAC)
# ifdef qDebug
# define old_qDebug qDebug
# undef qDebug
# endif
#ifndef Q_OS_IOS
# include <CoreServices/CoreServices.h>
#endif //Q_OS_IOS
# ifdef old_qDebug
# undef qDebug
# define qDebug QT_NO_QDEBUG_MACRO
# undef old_qDebug
# endif
#endif
#if defined(Q_OS_LINUX) && !defined(QT_LINUXBASE)
#include <sys/prctl.h>
#endif
#if defined(Q_OS_LINUX) && !defined(SCHED_IDLE)
// from linux/sched.h
# define SCHED_IDLE 5
#endif
#if defined(Q_OS_DARWIN) || !defined(Q_OS_OPENBSD) && defined(_POSIX_THREAD_PRIORITY_SCHEDULING) && (_POSIX_THREAD_PRIORITY_SCHEDULING-0 >= 0)
#define QT_HAS_THREAD_PRIORITY_SCHEDULING
#endif
#endif /* Q_OS_GENODE */
QT_BEGIN_NAMESPACE
#ifndef QT_NO_THREAD
#ifdef Q_OS_GENODE
#include <base/env.h>
#include <timer_session/connection.h>
QHash<Qt::HANDLE, struct QThreadPrivate::tls_struct> QThreadPrivate::tls;
#else
enum { ThreadPriorityResetFlag = 0x80000000 };
#if defined(Q_OS_LINUX) && defined(__GLIBC__) && (defined(Q_CC_GNU) || defined(Q_CC_INTEL)) && !defined(QT_LINUXBASE)
/* LSB doesn't have __thread, https://lsbbugs.linuxfoundation.org/show_bug.cgi?id=993 */
#define HAVE_TLS
#endif
#if defined(Q_CC_XLC) || defined (Q_CC_SUN)
#define HAVE_TLS
#endif
#ifdef HAVE_TLS
static __thread QThreadData *currentThreadData = 0;
#endif
static pthread_once_t current_thread_data_once = PTHREAD_ONCE_INIT;
static pthread_key_t current_thread_data_key;
static void destroy_current_thread_data(void *p)
{
#if defined(Q_OS_VXWORKS)
// Calling setspecific(..., 0) sets the value to 0 for ALL threads.
// The 'set to 1' workaround adds a bit of an overhead though,
// since this function is called twice now.
if (p == (void *)1)
return;
#endif
// POSIX says the value in our key is set to zero before calling
// this destructor function, so we need to set it back to the
// right value...
pthread_setspecific(current_thread_data_key, p);
QThreadData *data = static_cast<QThreadData *>(p);
if (data->isAdopted) {
QThread *thread = data->thread;
Q_ASSERT(thread);
QThreadPrivate *thread_p = static_cast<QThreadPrivate *>(QObjectPrivate::get(thread));
Q_ASSERT(!thread_p->finished);
thread_p->finish(thread);
}
data->deref();
// ... but we must reset it to zero before returning so we aren't
// called again (POSIX allows implementations to call destructor
// functions repeatedly until all values are zero)
pthread_setspecific(current_thread_data_key,
#if defined(Q_OS_VXWORKS)
(void *)1);
#else
0);
#endif
}
static void create_current_thread_data_key()
{
pthread_key_create(&current_thread_data_key, destroy_current_thread_data);
}
static void destroy_current_thread_data_key()
{
pthread_once(&current_thread_data_once, create_current_thread_data_key);
pthread_key_delete(current_thread_data_key);
}
Q_DESTRUCTOR_FUNCTION(destroy_current_thread_data_key)
#endif /* Q_OS_GENODE */
// Utility functions for getting, setting and clearing thread specific data.
static QThreadData *get_thread_data()
{
#ifdef Q_OS_GENODE
if (!QThreadPrivate::tls.contains(QThread::currentThreadId())) {
// create an entry for the thread-specific data of the current thread
QThreadPrivate::tls.insert(QThread::currentThreadId(),
(struct QThreadPrivate::tls_struct){0, true});
}
return QThreadPrivate::tls.value(QThread::currentThreadId()).data;
#else
#ifdef HAVE_TLS
return currentThreadData;
#else
pthread_once(&current_thread_data_once, create_current_thread_data_key);
return reinterpret_cast<QThreadData *>(pthread_getspecific(current_thread_data_key));
#endif
#endif /* Q_OS_GENODE */
}
static void set_thread_data(QThreadData *data)
{
#ifdef Q_OS_GENODE
struct QThreadPrivate::tls_struct tls_elem =
QThreadPrivate::tls.value(QThread::currentThreadId());
tls_elem.data = data;
QThreadPrivate::tls.insert(QThread::currentThreadId(), tls_elem);
#else
#ifdef HAVE_TLS
currentThreadData = data;
#endif
pthread_once(&current_thread_data_once, create_current_thread_data_key);
pthread_setspecific(current_thread_data_key, data);
#endif /* Q_OS_GENODE */
}
static void clear_thread_data()
{
#ifdef Q_OS_GENODE
QThreadPrivate::tls.remove(QThread::currentThreadId());
#else
#ifdef HAVE_TLS
currentThreadData = 0;
#endif
pthread_setspecific(current_thread_data_key, 0);
#endif /* Q_OS_GENODE */
}
void QThreadData::clearCurrentThreadData()
{
clear_thread_data();
}
QThreadData *QThreadData::current()
{
QThreadData *data = get_thread_data();
if (!data) {
data = new QThreadData;
QT_TRY {
set_thread_data(data);
data->thread = new QAdoptedThread(data);
} QT_CATCH(...) {
clear_thread_data();
data->deref();
data = 0;
QT_RETHROW;
}
data->deref();
data->isAdopted = true;
#ifdef Q_OS_GENODE
data->threadId = QThread::currentThreadId();
#else
data->threadId = (Qt::HANDLE)pthread_self();
#endif /* Q_OS_GENODE */
if (!QCoreApplicationPrivate::theMainThread)
QCoreApplicationPrivate::theMainThread = data->thread;
}
return data;
}
void QAdoptedThread::init()
{
#ifdef Q_OS_GENODE
d_func()->thread_id = QThread::currentThreadId();
#else
Q_D(QThread);
d->thread_id = pthread_self();
#endif /* Q_OS_GENODE */
}
/*
QThreadPrivate
*/
#if defined(Q_C_CALLBACKS)
extern "C" {
#endif
typedef void*(*QtThreadCallback)(void*);
#if defined(Q_C_CALLBACKS)
}
#endif
#endif // QT_NO_THREAD
void QThreadPrivate::createEventDispatcher(QThreadData *data)
{
#if defined(Q_OS_BLACKBERRY)
data->eventDispatcher.storeRelease(new QEventDispatcherBlackberry);
#else
#if !defined(QT_NO_GLIB)
if (qEnvironmentVariableIsEmpty("QT_NO_GLIB")
&& qEnvironmentVariableIsEmpty("QT_NO_THREADED_GLIB")
&& QEventDispatcherGlib::versionSupported())
data->eventDispatcher.storeRelease(new QEventDispatcherGlib);
else
#endif
data->eventDispatcher.storeRelease(new QEventDispatcherUNIX);
#endif
data->eventDispatcher.load()->startingUp();
}
#ifndef QT_NO_THREAD
#ifndef Q_OS_GENODE
#if (defined(Q_OS_LINUX) || defined(Q_OS_MAC) || defined(Q_OS_QNX))
static void setCurrentThreadName(pthread_t threadId, const char *name)
{
# if defined(Q_OS_LINUX) && !defined(QT_LINUXBASE)
Q_UNUSED(threadId);
prctl(PR_SET_NAME, (unsigned long)name, 0, 0, 0);
# elif defined(Q_OS_MAC)
Q_UNUSED(threadId);
pthread_setname_np(name);
# elif defined(Q_OS_QNX)
pthread_setname_np(threadId, name);
# endif
}
#endif
#endif /* Q_OS_GENODE */
void *QThreadPrivate::start(void *arg)
{
#ifndef Q_OS_GENODE
#if !defined(Q_OS_ANDROID)
pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
#endif
pthread_cleanup_push(QThreadPrivate::finish, arg);
#endif /* Q_OS_GENODE */
QThread *thr = reinterpret_cast<QThread *>(arg);
QThreadData *data = QThreadData::get2(thr);
{
QMutexLocker locker(&thr->d_func()->mutex);
#ifdef Q_OS_GENODE
thr->d_func()->thread_id = QThread::currentThreadId();
set_thread_data(data);
QThread::setTerminationEnabled(false);
#else
// do we need to reset the thread priority?
if (int(thr->d_func()->priority) & ThreadPriorityResetFlag) {
thr->d_func()->setPriority(QThread::Priority(thr->d_func()->priority & ~ThreadPriorityResetFlag));
}
data->threadId = (Qt::HANDLE)pthread_self();
set_thread_data(data);
#endif /* Q_OS_GENODE */
data->ref();
data->quitNow = thr->d_func()->exited;
}
if (data->eventDispatcher.load()) // custom event dispatcher set?
data->eventDispatcher.load()->startingUp();
else
createEventDispatcher(data);
#ifdef Q_OS_GENODE
QThread::setTerminationEnabled(true);
#else
#if (defined(Q_OS_LINUX) || defined(Q_OS_MAC) || defined(Q_OS_QNX))
// sets the name of the current thread.
QString objectName = thr->objectName();
if (Q_LIKELY(objectName.isEmpty()))
setCurrentThreadName(thr->d_func()->thread_id, thr->metaObject()->className());
else
setCurrentThreadName(thr->d_func()->thread_id, objectName.toLocal8Bit());
#endif
emit thr->started(QThread::QPrivateSignal());
#if !defined(Q_OS_ANDROID)
pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
pthread_testcancel();
#endif
#endif /* Q_OS_GENODE */
thr->run();
#ifndef Q_OS_GENODE
pthread_cleanup_pop(1);
#endif /* Q_OS_GENODE */
return 0;
}
void QThreadPrivate::finish(void *arg)
{
QThread *thr = reinterpret_cast<QThread *>(arg);
QThreadPrivate *d = thr->d_func();
QMutexLocker locker(&d->mutex);
d->isInFinish = true;
d->priority = QThread::InheritPriority;
void *data = &d->data->tls;
locker.unlock();
emit thr->finished(QThread::QPrivateSignal());
QCoreApplication::sendPostedEvents(0, QEvent::DeferredDelete);
QThreadStorageData::finish((void **)data);
locker.relock();
QAbstractEventDispatcher *eventDispatcher = d->data->eventDispatcher.load();
if (eventDispatcher) {
d->data->eventDispatcher = 0;
locker.unlock();
eventDispatcher->closingDown();
delete eventDispatcher;
locker.relock();
}
d->thread_id = 0;
d->running = false;
d->finished = true;
#ifdef Q_OS_GENODE
QThreadPrivate::tls.remove(QThread::currentThreadId());
#endif /* Q_OS_GENODE */
d->isInFinish = false;
d->thread_done.wakeAll();
}
/**************************************************************************
** QThread
*************************************************************************/
Qt::HANDLE QThread::currentThreadId() Q_DECL_NOTHROW
{
#ifdef Q_OS_GENODE
return (Qt::HANDLE)QThreadPrivate::Genode_thread::myself();
#else
// requires a C cast here otherwise we run into trouble on AIX
return (Qt::HANDLE)pthread_self();
#endif /* Q_OS_GENODE */
}
#ifndef Q_OS_GENODE
#if defined(QT_LINUXBASE) && !defined(_SC_NPROCESSORS_ONLN)
// LSB doesn't define _SC_NPROCESSORS_ONLN.
# define _SC_NPROCESSORS_ONLN 84
#endif
#endif /* Q_OS_GENODE */
int QThread::idealThreadCount() Q_DECL_NOTHROW
{
int cores = -1;
#if defined(Q_OS_HPUX)
// HP-UX
struct pst_dynamic psd;
if (pstat_getdynamic(&psd, sizeof(psd), 1, 0) == -1) {
perror("pstat_getdynamic");
cores = -1;
} else {
cores = (int)psd.psd_proc_cnt;
}
#elif defined(Q_OS_BSD4)
// FreeBSD, OpenBSD, NetBSD, BSD/OS, Mac OS X
size_t len = sizeof(cores);
int mib[2];
mib[0] = CTL_HW;
mib[1] = HW_NCPU;
if (sysctl(mib, 2, &cores, &len, NULL, 0) != 0) {
perror("sysctl");
cores = -1;
}
#elif defined(Q_OS_IRIX)
// IRIX
cores = (int)sysconf(_SC_NPROC_ONLN);
#elif defined(Q_OS_INTEGRITY)
// as of aug 2008 Integrity only supports one single core CPU
cores = 1;
#elif defined(Q_OS_VXWORKS)
// VxWorks
# if defined(QT_VXWORKS_HAS_CPUSET)
cpuset_t cpus = vxCpuEnabledGet();
cores = 0;
// 128 cores should be enough for everyone ;)
for (int i = 0; i < 128 && !CPUSET_ISZERO(cpus); ++i) {
if (CPUSET_ISSET(cpus, i)) {
CPUSET_CLR(cpus, i);
cores++;
}
}
# else
// as of aug 2008 VxWorks < 6.6 only supports one single core CPU
cores = 1;
# endif
#elif defined(Q_OS_GENODE)
cores = 1;
#else
// the rest: Linux, Solaris, AIX, Tru64
cores = (int)sysconf(_SC_NPROCESSORS_ONLN);
#endif
return cores;
}
void QThread::yieldCurrentThread()
{
#ifndef Q_OS_GENODE
sched_yield();
#endif /* Q_OS_GENODE */
}
static timespec makeTimespec(time_t secs, long nsecs)
{
struct timespec ts;
ts.tv_sec = secs;
ts.tv_nsec = nsecs;
return ts;
}
void QThread::sleep(unsigned long secs)
{
#ifdef Q_OS_GENODE
static Timer::Connection timer;
timer.msleep(secs * 1000);
#else
qt_nanosleep(makeTimespec(secs, 0));
#endif /* Q_OS_GENODE */
}
void QThread::msleep(unsigned long msecs)
{
#ifdef Q_OS_GENODE
static Timer::Connection timer;
timer.msleep(msecs);
#else
qt_nanosleep(makeTimespec(msecs / 1000, msecs % 1000 * 1000 * 1000));
#endif /* Q_OS_GENODE */
}
void QThread::usleep(unsigned long usecs)
{
#ifdef Q_OS_GENODE
static Timer::Connection timer;
timer.msleep(usecs / 1000);
#else
qt_nanosleep(makeTimespec(usecs / 1000 / 1000, usecs % (1000*1000) * 1000));
#endif /* Q_OS_GENODE */
}
#ifndef Q_OS_GENODE
#ifdef QT_HAS_THREAD_PRIORITY_SCHEDULING
// Does some magic and calculate the Unix scheduler priorities
// sched_policy is IN/OUT: it must be set to a valid policy before calling this function
// sched_priority is OUT only
static bool calculateUnixPriority(int priority, int *sched_policy, int *sched_priority)
{
#ifdef SCHED_IDLE
if (priority == QThread::IdlePriority) {
*sched_policy = SCHED_IDLE;
*sched_priority = 0;
return true;
}
const int lowestPriority = QThread::LowestPriority;
#else
const int lowestPriority = QThread::IdlePriority;
#endif
const int highestPriority = QThread::TimeCriticalPriority;
int prio_min;
int prio_max;
#if defined(Q_OS_VXWORKS) && defined(VXWORKS_DKM)
// for other scheduling policies than SCHED_RR or SCHED_FIFO
prio_min = SCHED_FIFO_LOW_PRI;
prio_max = SCHED_FIFO_HIGH_PRI;
if ((*sched_policy == SCHED_RR) || (*sched_policy == SCHED_FIFO))
#endif
{
prio_min = sched_get_priority_min(*sched_policy);
prio_max = sched_get_priority_max(*sched_policy);
}
if (prio_min == -1 || prio_max == -1)
return false;
int prio;
// crudely scale our priority enum values to the prio_min/prio_max
prio = ((priority - lowestPriority) * (prio_max - prio_min) / highestPriority) + prio_min;
prio = qMax(prio_min, qMin(prio_max, prio));
*sched_priority = prio;
return true;
}
#endif
#endif /* Q_OS_GENODE */
void QThread::start(Priority priority)
{
Q_D(QThread);
QMutexLocker locker(&d->mutex);
if (d->isInFinish)
d->thread_done.wait(locker.mutex());
if (d->running)
return;
d->running = true;
d->finished = false;
d->returnCode = 0;
d->exited = false;
#ifndef Q_OS_GENODE
pthread_attr_t attr;
pthread_attr_init(&attr);
pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
#endif /* Q_OS_GENODE */
d->priority = priority;
#ifdef Q_OS_GENODE
d->genode_thread = new QThreadPrivate::Genode_thread(this);
if (d->genode_thread) {
if (d->stackSize > 0) {
try {
d->genode_thread->stack_size(d->stackSize);
} catch (...) {
qWarning("QThread::start: Thread stack allocation error");
// we failed to set the stacksize, and as the documentation states,
// the thread will fail to run...
d->running = false;
d->finished = false;
return;
}
}
d->genode_thread->start();
} else {
qWarning("QThread::start: Thread creation error");
d->running = false;
d->finished = false;
d->thread_id = 0;
}
#else
#if defined(QT_HAS_THREAD_PRIORITY_SCHEDULING)
switch (priority) {
case InheritPriority:
{
pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);
break;
}
default:
{
int sched_policy;
if (pthread_attr_getschedpolicy(&attr, &sched_policy) != 0) {
// failed to get the scheduling policy, don't bother
// setting the priority
qWarning("QThread::start: Cannot determine default scheduler policy");
break;
}
int prio;
if (!calculateUnixPriority(priority, &sched_policy, &prio)) {
// failed to get the scheduling parameters, don't
// bother setting the priority
qWarning("QThread::start: Cannot determine scheduler priority range");
break;
}
sched_param sp;
sp.sched_priority = prio;
if (pthread_attr_setinheritsched(&attr, PTHREAD_EXPLICIT_SCHED) != 0
|| pthread_attr_setschedpolicy(&attr, sched_policy) != 0
|| pthread_attr_setschedparam(&attr, &sp) != 0) {
// could not set scheduling hints, fallback to inheriting them
// we'll try again from inside the thread
pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);
d->priority = Priority(priority | ThreadPriorityResetFlag);
}
break;
}
}
#endif // QT_HAS_THREAD_PRIORITY_SCHEDULING
if (d->stackSize > 0) {
#if defined(_POSIX_THREAD_ATTR_STACKSIZE) && (_POSIX_THREAD_ATTR_STACKSIZE-0 > 0)
int code = pthread_attr_setstacksize(&attr, d->stackSize);
#else
int code = ENOSYS; // stack size not supported, automatically fail
#endif // _POSIX_THREAD_ATTR_STACKSIZE
if (code) {
qWarning("QThread::start: Thread stack size error: %s",
qPrintable(qt_error_string(code)));
// we failed to set the stacksize, and as the documentation states,
// the thread will fail to run...
d->running = false;
d->finished = false;
return;
}
}
int code =
pthread_create(&d->thread_id, &attr, QThreadPrivate::start, this);
if (code == EPERM) {
// caller does not have permission to set the scheduling
// parameters/policy
#if defined(QT_HAS_THREAD_PRIORITY_SCHEDULING)
pthread_attr_setinheritsched(&attr, PTHREAD_INHERIT_SCHED);
#endif
code =
pthread_create(&d->thread_id, &attr, QThreadPrivate::start, this);
}
pthread_attr_destroy(&attr);
if (code) {
qWarning("QThread::start: Thread creation error: %s", qPrintable(qt_error_string(code)));
d->running = false;
d->finished = false;
d->thread_id = 0;
}
#endif /* Q_OS_GENODE */
}
void QThread::terminate()
{
#if !defined(Q_OS_ANDROID)
Q_D(QThread);
QMutexLocker locker(&d->mutex);
#ifdef Q_OS_GENODE
if (QThreadPrivate::tls.value(QThread::currentThreadId()).termination_enabled) {
if (d->genode_thread) {
delete d->genode_thread;
d->genode_thread = 0;
}
d->exited = true;
d->running = false;
}
#else
if (!d->thread_id)
return;
int code = pthread_cancel(d->thread_id);
if (code) {
qWarning("QThread::start: Thread termination error: %s",
qPrintable(qt_error_string((code))));
}
#endif
#endif /* Q_OS_GENODE */
}
#ifdef Q_OS_GENODE
static inline void join_and_delete_genode_thread(QThreadPrivate *d)
{
if (d->genode_thread) {
d->genode_thread->join();
delete d->genode_thread;
d->genode_thread = 0;
}
}
#endif /* Q_OS_GENODE */
bool QThread::wait(unsigned long time)
{
Q_D(QThread);
QMutexLocker locker(&d->mutex);
#ifdef Q_OS_GENODE
if (d->thread_id == QThread::currentThreadId()) {
#else
if (d->thread_id == pthread_self()) {
#endif /* Q_OS_GENODE */
qWarning("QThread::wait: Thread tried to wait on itself");
return false;
}
if (d->finished || !d->running) {
#ifdef Q_OS_GENODE
join_and_delete_genode_thread(d);
#endif /* Q_OS_GENODE */
return true;
}
while (d->running) {
if (!d->thread_done.wait(locker.mutex(), time))
return false;
}
#ifdef Q_OS_GENODE
join_and_delete_genode_thread(d);
#endif /* Q_OS_GENODE */
return true;
}
void QThread::setTerminationEnabled(bool enabled)
{
QThread *thr = currentThread();
Q_ASSERT_X(thr != 0, "QThread::setTerminationEnabled()",
"Current thread was not started with QThread.");
Q_UNUSED(thr)
#ifdef Q_OS_GENODE
struct QThreadPrivate::tls_struct tls_elem =
QThreadPrivate::tls.value(QThread::currentThreadId());
tls_elem.termination_enabled = enabled;
QThreadPrivate::tls.insert(QThread::currentThreadId(), tls_elem);
#else
#if defined(Q_OS_ANDROID)
Q_UNUSED(enabled);
#else
pthread_setcancelstate(enabled ? PTHREAD_CANCEL_ENABLE : PTHREAD_CANCEL_DISABLE, NULL);
if (enabled)
pthread_testcancel();
#endif
#endif /* Q_OS_GENODE */
}
// Caller must lock the mutex
void QThreadPrivate::setPriority(QThread::Priority threadPriority)
{
priority = threadPriority;
#ifndef Q_OS_GENODE
// copied from start() with a few modifications:
#ifdef QT_HAS_THREAD_PRIORITY_SCHEDULING
int sched_policy;
sched_param param;
if (pthread_getschedparam(thread_id, &sched_policy, &param) != 0) {
// failed to get the scheduling policy, don't bother setting
// the priority
qWarning("QThread::setPriority: Cannot get scheduler parameters");
return;
}
int prio;
if (!calculateUnixPriority(priority, &sched_policy, &prio)) {
// failed to get the scheduling parameters, don't
// bother setting the priority
qWarning("QThread::setPriority: Cannot determine scheduler priority range");
return;
}
param.sched_priority = prio;
int status = pthread_setschedparam(thread_id, sched_policy, &param);
# ifdef SCHED_IDLE
// were we trying to set to idle priority and failed?
if (status == -1 && sched_policy == SCHED_IDLE && errno == EINVAL) {
// reset to lowest priority possible
pthread_getschedparam(thread_id, &sched_policy, &param);
param.sched_priority = sched_get_priority_min(sched_policy);
pthread_setschedparam(thread_id, sched_policy, &param);
}
# else
Q_UNUSED(status);
# endif // SCHED_IDLE
#endif
#endif /* Q_OS_GENODE */
}
#endif // QT_NO_THREAD
QT_END_NAMESPACE
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