qcore_unix_p.h File Reference

(2a7cacb5e3d2643a7f2cbd6bc861374a7ee926ea)

#include "qplatformdefs.h"
#include <QtCore/private/qglobal_p.h>
#include "qbytearray.h"
#include "qdeadlinetimer.h"
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/select.h>
#include <sys/time.h>
#include <chrono>
#include <sys/wait.h>
#include <errno.h>
#include <fcntl.h>
#include <poll.h>

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Classes
union	qt_semun

Macros
#define	QT_EINTR_LOOP(var, cmd)
#define	QT_OPEN   qt_safe_open
#define	QT_READ   qt_safe_read
#define	QT_WRITE   qt_safe_write
#define	QT_CLOSE   qt_safe_close
#define	_POSIX_MONOTONIC_CLOCK   -1

Functions
QT_BEGIN_NAMESPACE	Q_DECLARE_TYPEINFO (pollfd, Q_PRIMITIVE_TYPE)
timespec	durationToTimespec (std::chrono::nanoseconds timeout) noexcept
template<typename Duration >
Duration	timespecToChrono (timespec ts) noexcept
std::chrono::milliseconds	timespecToChronoMs (timespec ts) noexcept
constexpr timespec &	normalizedTimespec (timespec &t)
constexpr bool	operator< (const timespec &t1, const timespec &t2)
constexpr bool	operator== (const timespec &t1, const timespec &t2)
constexpr bool	operator!= (const timespec &t1, const timespec &t2)
constexpr timespec &	operator+= (timespec &t1, const timespec &t2)
constexpr timespec	operator+ (const timespec &t1, const timespec &t2)
constexpr timespec	operator- (const timespec &t1, const timespec &t2)
constexpr timespec	operator* (const timespec &t1, int mul)
timeval	timespecToTimeval (timespec ts)
timespec &	operator+= (timespec &t1, std::chrono::milliseconds msecs)
timespec &	operator+= (timespec &t1, int ms)
timespec	operator+ (const timespec &t1, std::chrono::milliseconds msecs)
timespec	operator+ (const timespec &t1, int ms)
timespec	qAbsTimespec (timespec ts)
template<clockid_t ClockId = SteadyClockClockId>
timespec	deadlineToAbstime (QDeadlineTimer deadline)
Q_CORE_EXPORT void	qt_ignore_sigpipe () noexcept
static int	qt_safe_open (const char *pathname, int flags, mode_t mode=0777)
static int	qt_safe_pipe (int pipefd[2], int flags=0)
static int	qt_safe_dup (int oldfd, int atleast=0, int flags=FD_CLOEXEC)
static int	qt_safe_dup2 (int oldfd, int newfd, int flags=FD_CLOEXEC)
static qint64	qt_safe_read (int fd, void *data, qint64 maxlen)
static qint64	qt_safe_write (int fd, const void *data, qint64 len)
static qint64	qt_safe_write_nosignal (int fd, const void *data, qint64 len)
static int	qt_safe_close (int fd)
QByteArray	qt_readlink (const char *path)
bool	qt_haveLinuxProcfs ()
Q_CORE_EXPORT int	qt_safe_poll (struct pollfd *fds, nfds_t nfds, QDeadlineTimer deadline)
static struct pollfd	qt_make_pollfd (int fd, short events)

Variables
static constexpr clockid_t	SteadyClockClockId
static constexpr clockid_t	QWaitConditionClockId
static constexpr auto	OneSecAsNsecs = std::chrono::nanoseconds(std::chrono::seconds{ 1 }).count()

Macro Definition Documentation

_POSIX_MONOTONIC_CLOCK

#define _POSIX_MONOTONIC_CLOCK   -1

Definition at line 412 of file qcore_unix_p.h.

QT_CLOSE

#define QT_CLOSE   qt_safe_close

Definition at line 377 of file qcore_unix_p.h.

QT_EINTR_LOOP

#define QT_EINTR_LOOP	(		var,
			cmd )

Value:

    do {                                        \
        var = cmd;                              \
    } while (var == -1 && errno == EINTR)

Definition at line 59 of file qcore_unix_p.h.

QT_OPEN

#define QT_OPEN   qt_safe_open

Definition at line 271 of file qcore_unix_p.h.

QT_READ

#define QT_READ   qt_safe_read

Definition at line 353 of file qcore_unix_p.h.

QT_WRITE

#define QT_WRITE   qt_safe_write

Definition at line 362 of file qcore_unix_p.h.

Function Documentation

deadlineToAbstime()

template<clockid_t ClockId = SteadyClockClockId>

timespec deadlineToAbstime ( QDeadlineTimer deadline )

inline

Definition at line 222 of file qcore_unix_p.h.

durationToTimespec()

timespec durationToTimespec ( std::chrono::nanoseconds timeout )

inlinenoexcept

Definition at line 108 of file qcore_unix_p.h.

normalizedTimespec()

timespec & normalizedTimespec ( timespec & t )

inlineconstexpr

Definition at line 132 of file qcore_unix_p.h.

Referenced by operator*(), operator+(), operator+=(), operator-(), and qAbsTimespec().

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operator!=()

bool operator!= ( const timespec & t1, const timespec & t2 )

inlineconstexpr

Definition at line 148 of file qcore_unix_p.h.

References operator==().

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operator*()

timespec operator* ( const timespec & t1, int mul )

inlineconstexpr

Definition at line 170 of file qcore_unix_p.h.

References normalizedTimespec().

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operator+() [1/3]

timespec operator+ ( const timespec & t1, const timespec & t2 )

inlineconstexpr

Definition at line 156 of file qcore_unix_p.h.

References normalizedTimespec().

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operator+() [2/3]

timespec operator+ ( const timespec & t1, int ms )

inline

Definition at line 204 of file qcore_unix_p.h.

operator+() [3/3]

timespec operator+ ( const timespec & t1, std::chrono::milliseconds msecs )

inline

Definition at line 197 of file qcore_unix_p.h.

operator+=() [1/3]

timespec & operator+= ( timespec & t1, const timespec & t2 )

inlineconstexpr

Definition at line 150 of file qcore_unix_p.h.

References normalizedTimespec().

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operator+=() [2/3]

timespec & operator+= ( timespec & t1, int ms )

inline

Definition at line 191 of file qcore_unix_p.h.

operator+=() [3/3]

timespec & operator+= ( timespec & t1, std::chrono::milliseconds msecs )

inline

Definition at line 185 of file qcore_unix_p.h.

operator-()

timespec operator- ( const timespec & t1, const timespec & t2 )

inlineconstexpr

Definition at line 163 of file qcore_unix_p.h.

References normalizedTimespec().

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operator<()

bool operator< ( const timespec & t1, const timespec & t2 )

inlineconstexpr

Definition at line 144 of file qcore_unix_p.h.

operator==()

bool operator== ( const timespec & t1, const timespec & t2 )

inlineconstexpr

Definition at line 146 of file qcore_unix_p.h.

Referenced by operator!=().

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Q_DECLARE_TYPEINFO()

QT_BEGIN_NAMESPACE Q_DECLARE_TYPEINFO	(	pollfd	,
		Q_PRIMITIVE_TYPE	)

qAbsTimespec()

timespec qAbsTimespec ( timespec ts )

inline

Definition at line 209 of file qcore_unix_p.h.

References normalizedTimespec().

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qt_haveLinuxProcfs()

bool qt_haveLinuxProcfs ( )

inline

Definition at line 418 of file qcore_unix_p.h.

qt_ignore_sigpipe()

Q_CORE_EXPORT void qt_ignore_sigpipe ( )

noexcept

Definition at line 23 of file qcore_unix.cpp.

qt_make_pollfd()

static struct pollfd qt_make_pollfd ( int fd, short events )

inlinestatic

Definition at line 434 of file qcore_unix_p.h.

qt_readlink()

QByteArray qt_readlink

(

const char *

path

)

Definition at line 38 of file qcore_unix.cpp.

qt_safe_close()

static int qt_safe_close ( int fd )

inlinestatic

Definition at line 370 of file qcore_unix_p.h.

qt_safe_dup()

static int qt_safe_dup ( int oldfd, int atleast = 0, int flags = FD_CLOEXEC )

inlinestatic

Definition at line 305 of file qcore_unix_p.h.

qt_safe_dup2()

static int qt_safe_dup2 ( int oldfd, int newfd, int flags = FD_CLOEXEC )

inlinestatic

Definition at line 326 of file qcore_unix_p.h.

qt_safe_open()

static int qt_safe_open ( const char * pathname, int flags, mode_t mode = 0777 )

inlinestatic

Definition at line 255 of file qcore_unix_p.h.

qt_safe_pipe()

static int qt_safe_pipe ( int pipefd[2], int flags = 0 )

inlinestatic

Definition at line 276 of file qcore_unix_p.h.

qt_safe_poll()

Q_CORE_EXPORT int qt_safe_poll	(	struct pollfd *	fds,
		nfds_t	nfds,
		QDeadlineTimer	deadline )

Behaves as close to POSIX poll(2) as practical but may be implemented using select(2) where necessary. In that case, returns -1 and sets errno to EINVAL if passed any descriptor greater than or equal to FD_SETSIZE.

Definition at line 121 of file qcore_unix.cpp.

References qt_ppoll().

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qt_safe_read()

static qint64 qt_safe_read ( int fd, void * data, qint64 maxlen )

inlinestatic

Definition at line 346 of file qcore_unix_p.h.

qt_safe_write()

static qint64 qt_safe_write ( int fd, const void * data, qint64 len )

inlinestatic

Definition at line 355 of file qcore_unix_p.h.

qt_safe_write_nosignal()

static qint64 qt_safe_write_nosignal ( int fd, const void * data, qint64 len )

inlinestatic

Definition at line 364 of file qcore_unix_p.h.

timespecToChrono()

template<typename Duration >

Duration timespecToChrono ( timespec ts )

inlinenoexcept

Definition at line 120 of file qcore_unix_p.h.

timespecToChronoMs()

std::chrono::milliseconds timespecToChronoMs ( timespec ts )

inlinenoexcept

Definition at line 126 of file qcore_unix_p.h.

timespecToTimeval()

timeval timespecToTimeval ( timespec ts )

inline

Definition at line 177 of file qcore_unix_p.h.

Referenced by qt_poll().

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Variable Documentation

OneSecAsNsecs

auto OneSecAsNsecs = std::chrono::nanoseconds(std::chrono::seconds{ 1 }).count()

staticconstexpr

Definition at line 106 of file qcore_unix_p.h.

QWaitConditionClockId

clockid_t QWaitConditionClockId

inlinestaticconstexpr

Initial value:

=
 
        
        CLOCK_REALTIME

Definition at line 91 of file qcore_unix_p.h.

SteadyClockClockId

clockid_t SteadyClockClockId

inlinestaticconstexpr

Initial value:

=
 
        
        CLOCK_REALTIME

Definition at line 68 of file qcore_unix_p.h.