1berry/qtbase
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Speed up QFile::copy on Darwin file systems that support cloning

Browse Source 
Recent Darwin system have a new system call that allows cloning the
contents of a file from another one if the underlying file system (for
example, APFS) supports it.

Change-Id: I90ec53b8abd2b1dc4000070f295e226d0fb4c672
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Jake Petroules 2017-02-24 15:06:21 -08:00
parent be74da81df
commit db0064b767
2 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/corelib/io/qfilesystemengine_unix.cpp
View File

@ -42,6 +42,7 @@
#include "qfilesystemengine_p.h"
#include "qfile.h"
#include <QtCore/qoperatingsystemversion.h>
#include <QtCore/qvarlengtharray.h>
#include <stdlib.h> // for realpath()
@ -66,6 +67,9 @@
#endif
#if defined(Q_OS_DARWIN)
# if QT_DARWIN_PLATFORM_SDK_EQUAL_OR_ABOVE(101200, 100000, 100000, 30000)
# include <sys/clonefile.h>
# endif
// We cannot include <Foundation/Foundation.h> (it's an Objective-C header), but
// we need these declarations:
Q_FORWARD_DECLARE_OBJC_CLASS(NSString);
@ -629,8 +633,22 @@ bool QFileSystemEngine::createLink(const QFileSystemEntry &source, const QFileSy
//static
bool QFileSystemEngine::copyFile(const QFileSystemEntry &source, const QFileSystemEntry &target, QSystemError &error)
{
#if QT_DARWIN_PLATFORM_SDK_EQUAL_OR_ABOVE(101200, 100000, 100000, 30000)
const auto current = QOperatingSystemVersion::current();
if (current >= QOperatingSystemVersion::MacOSSierra ||
current >= QOperatingSystemVersion(QOperatingSystemVersion::IOS, 10) ||
current >= QOperatingSystemVersion(QOperatingSystemVersion::TvOS, 10) ||
current >= QOperatingSystemVersion(QOperatingSystemVersion::WatchOS, 3)) {
if (::clonefile(source.nativeFilePath().constData(),
target.nativeFilePath().constData(), 0) == 0)
return true;
error = QSystemError(errno, QSystemError::StandardLibraryError);
return false;
}
#else
Q_UNUSED(source);
Q_UNUSED(target);
#endif
error = QSystemError(ENOSYS, QSystemError::StandardLibraryError); //Function not implemented
return false;
}

4
src/corelib/io/qfsfileengine.cpp
View File

@ -860,9 +860,9 @@ bool QFSFileEngine::supportsExtension(Extension extension) const
/*! \fn bool QFSFileEngine::copy(const QString &copyName)
For windows, copy the file to file \a copyName.
For Windows or Apple platforms, copy the file to file \a copyName.
Not implemented for Unix.
Not implemented for other Unix platforms.
*/
/*! \fn QString QFSFileEngine::currentPath(const QString &fileName)