diff options
Diffstat (limited to 'src/corelib/thread/qthread.h')
| -rw-r--r-- | src/corelib/thread/qthread.h | 30 |
1 files changed, 14 insertions, 16 deletions
diff --git a/src/corelib/thread/qthread.h b/src/corelib/thread/qthread.h index 4cea76cf77..641c8ef68a 100644 --- a/src/corelib/thread/qthread.h +++ b/src/corelib/thread/qthread.h @@ -9,10 +9,8 @@ #include <QtCore/qdeadlinetimer.h> // For QThread::create -#if QT_CONFIG(cxx11_future) -# include <future> // for std::async -# include <functional> // for std::invoke; no guard needed as it's a C++98 header -#endif +#include <future> // for std::async +#include <functional> // for std::invoke; no guard needed as it's a C++98 header // internal compiler error with mingw 8.1 #if defined(Q_CC_MSVC) && defined(Q_PROCESSOR_X86) #include <intrin.h> @@ -24,6 +22,7 @@ QT_BEGIN_NAMESPACE class QThreadData; class QThreadPrivate; class QAbstractEventDispatcher; +class QEventLoopLocker; class Q_CORE_EXPORT QThread : public QObject { @@ -31,6 +30,7 @@ class Q_CORE_EXPORT QThread : public QObject public: static Qt::HANDLE currentThreadId() noexcept Q_DECL_PURE_FUNCTION; static QThread *currentThread(); + static bool isMainThread(); static int idealThreadCount() noexcept; static void yieldCurrentThread(); @@ -69,10 +69,10 @@ public: bool event(QEvent *event) override; int loopLevel() const; -#if QT_CONFIG(cxx11_future) || defined(Q_CLANG_QDOC) + bool isCurrentThread() const; + template <typename Function, typename... Args> [[nodiscard]] static QThread *create(Function &&f, Args &&... args); -#endif public Q_SLOTS: void start(Priority = InheritPriority); @@ -92,6 +92,7 @@ public: static void sleep(unsigned long); static void msleep(unsigned long); static void usleep(unsigned long); + static void sleep(std::chrono::nanoseconds nsec); Q_SIGNALS: void started(QPrivateSignal); @@ -108,17 +109,15 @@ protected: private: Q_DECLARE_PRIVATE(QThread) + friend class QEventLoopLocker; -#if QT_CONFIG(cxx11_future) [[nodiscard]] static QThread *createThreadImpl(std::future<void> &&future); -#endif static Qt::HANDLE currentThreadIdImpl() noexcept Q_DECL_PURE_FUNCTION; friend class QCoreApplication; friend class QThreadData; }; -#if QT_CONFIG(cxx11_future) template <typename Function, typename... Args> QThread *QThread::create(Function &&f, Args &&... args) { @@ -133,7 +132,6 @@ QThread *QThread::create(Function &&f, Args &&... args) std::move(threadFunction), std::forward<Args>(args)...)); } -#endif // QT_CONFIG(cxx11_future) /* On architectures and platforms we know, interpret the thread control @@ -155,14 +153,14 @@ inline Qt::HANDLE QThread::currentThreadId() noexcept Qt::HANDLE tid; // typedef to void* static_assert(sizeof(tid) == sizeof(void*)); // See https://akkadia.org/drepper/tls.pdf for x86 ABI -#if defined(Q_PROCESSOR_X86_32) && defined(Q_OS_LINUX) && defined(__GLIBC__) // x86 32-bit always uses GS - __asm__("movl %%gs:%c1, %0" : "=r" (tid) : "i" (2 * sizeof(void*)) : ); -#elif defined(Q_PROCESSOR_X86_64) && defined(Q_OS_DARWIN64) +#if defined(Q_PROCESSOR_X86_32) && ((defined(Q_OS_LINUX) && defined(__GLIBC__)) || defined(Q_OS_FREEBSD)) // x86 32-bit always uses GS + __asm__("mov %%gs:%c1, %0" : "=r" (tid) : "i" (2 * sizeof(void*)) : ); +#elif defined(Q_PROCESSOR_X86_64) && defined(Q_OS_DARWIN) // 64bit macOS uses GS, see https://github.com/apple/darwin-xnu/blob/master/libsyscall/os/tsd.h - __asm__("movq %%gs:0, %0" : "=r" (tid) : : ); -#elif defined(Q_PROCESSOR_X86_64) && (defined(Q_OS_LINUX) && defined(__GLIBC__)) || defined(Q_OS_FREEBSD) + __asm__("mov %%gs:0, %0" : "=r" (tid) : : ); +#elif defined(Q_PROCESSOR_X86_64) && ((defined(Q_OS_LINUX) && defined(__GLIBC__)) || defined(Q_OS_FREEBSD)) // x86_64 Linux, BSD uses FS - __asm__("movq %%fs:%c1, %0" : "=r" (tid) : "i" (2 * sizeof(void*)) : ); + __asm__("mov %%fs:%c1, %0" : "=r" (tid) : "i" (2 * sizeof(void*)) : ); #elif defined(Q_PROCESSOR_X86_64) && defined(Q_OS_WIN) // See https://en.wikipedia.org/wiki/Win32_Thread_Information_Block // First get the pointer to the TIB |