diff options
Diffstat (limited to 'src/corelib/kernel/qelapsedtimer_mac.cpp')
| -rw-r--r-- | src/corelib/kernel/qelapsedtimer_mac.cpp | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/src/corelib/kernel/qelapsedtimer_mac.cpp b/src/corelib/kernel/qelapsedtimer_mac.cpp deleted file mode 100644 index 8fe03c726b..0000000000 --- a/src/corelib/kernel/qelapsedtimer_mac.cpp +++ /dev/null @@ -1,166 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** 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 The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/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 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -// ask for the latest POSIX, just in case -#define _POSIX_C_SOURCE 200809L - -#include "qelapsedtimer.h" -#include "qdeadlinetimer.h" -#include "qdeadlinetimer_p.h" -#include <sys/time.h> -#include <time.h> -#include <unistd.h> - -#include <mach/mach_time.h> -#include <private/qcore_unix_p.h> - -QT_BEGIN_NAMESPACE - -#ifdef __LP64__ -typedef __int128_t LargeInt; -#else -typedef qint64 LargeInt; -#endif - -QElapsedTimer::ClockType QElapsedTimer::clockType() noexcept -{ - return MachAbsoluteTime; -} - -bool QElapsedTimer::isMonotonic() noexcept -{ - return true; -} - -static mach_timebase_info_data_t info = { 0, 0 }; -static qint64 absoluteToNSecs(qint64 cpuTime) -{ - if (info.denom == 0) - mach_timebase_info(&info); - - // don't do multiplication & division if those are equal - // (mathematically it would be the same, but it's computationally expensive) - if (info.numer == info.denom) - return cpuTime; - qint64 nsecs = LargeInt(cpuTime) * info.numer / info.denom; - return nsecs; -} - -static qint64 absoluteToMSecs(qint64 cpuTime) -{ - return absoluteToNSecs(cpuTime) / 1000000; -} - -timespec qt_gettime() noexcept -{ - timespec tv; - - uint64_t cpu_time = mach_absolute_time(); - uint64_t nsecs = absoluteToNSecs(cpu_time); - tv.tv_sec = nsecs / 1000000000ull; - tv.tv_nsec = nsecs - (tv.tv_sec * 1000000000ull); - return tv; -} - -void qt_nanosleep(timespec amount) -{ - // Mac doesn't have clock_nanosleep, but it does have nanosleep. - // nanosleep is POSIX.1-1993 - - int r; - EINTR_LOOP(r, nanosleep(&amount, &amount)); -} - -void QElapsedTimer::start() noexcept -{ - t1 = mach_absolute_time(); - t2 = 0; -} - -qint64 QElapsedTimer::restart() noexcept -{ - qint64 old = t1; - t1 = mach_absolute_time(); - t2 = 0; - - return absoluteToMSecs(t1 - old); -} - -qint64 QElapsedTimer::nsecsElapsed() const noexcept -{ - uint64_t cpu_time = mach_absolute_time(); - return absoluteToNSecs(cpu_time - t1); -} - -qint64 QElapsedTimer::elapsed() const noexcept -{ - uint64_t cpu_time = mach_absolute_time(); - return absoluteToMSecs(cpu_time - t1); -} - -qint64 QElapsedTimer::msecsSinceReference() const noexcept -{ - return absoluteToMSecs(t1); -} - -qint64 QElapsedTimer::msecsTo(const QElapsedTimer &other) const noexcept -{ - return absoluteToMSecs(other.t1 - t1); -} - -qint64 QElapsedTimer::secsTo(const QElapsedTimer &other) const noexcept -{ - return msecsTo(other) / 1000; -} - -bool operator<(const QElapsedTimer &v1, const QElapsedTimer &v2) noexcept -{ - return v1.t1 < v2.t1; -} - -QDeadlineTimer QDeadlineTimer::current(Qt::TimerType timerType) noexcept -{ - static_assert(!QDeadlineTimerNanosecondsInT2); - QDeadlineTimer result; - result.type = timerType; - result.t1 = absoluteToNSecs(mach_absolute_time()); - return result; -} - -QT_END_NAMESPACE |