diff options
Diffstat (limited to 'src/corelib/io')
| -rw-r--r-- | src/corelib/io/qwindowspipewriter.cpp | 11 | ||||
| -rw-r--r-- | src/corelib/io/qwinoverlappedionotifier.cpp | 16 |
2 files changed, 16 insertions, 11 deletions
diff --git a/src/corelib/io/qwindowspipewriter.cpp b/src/corelib/io/qwindowspipewriter.cpp index 48b915eef8..c7144d2c6b 100644 --- a/src/corelib/io/qwindowspipewriter.cpp +++ b/src/corelib/io/qwindowspipewriter.cpp @@ -49,13 +49,8 @@ QWindowsPipeWriter::QWindowsPipeWriter(HANDLE pipe, QObject * parent) quitNow(false), hasWritten(false) { -#if !defined(Q_OS_WINCE) || (_WIN32_WCE >= 0x600) DuplicateHandle(GetCurrentProcess(), pipe, GetCurrentProcess(), &writePipe, 0, FALSE, DUPLICATE_SAME_ACCESS); -#else - Q_UNUSED(pipe); - writePipe = GetCurrentProcess(); -#endif } QWindowsPipeWriter::~QWindowsPipeWriter() @@ -66,9 +61,7 @@ QWindowsPipeWriter::~QWindowsPipeWriter() lock.unlock(); if (!wait(30000)) terminate(); -#if !defined(Q_OS_WINCE) || (_WIN32_WCE >= 0x600) CloseHandle(writePipe); -#endif } bool QWindowsPipeWriter::waitForWrite(int msecs) @@ -159,7 +152,6 @@ void QWindowsPipeWriter::run() msleep(100); continue; } -#ifndef Q_OS_WINCE if (writeError != ERROR_IO_PENDING) { qErrnoWarning(writeError, "QWindowsPipeWriter: async WriteFile failed."); return; @@ -168,9 +160,6 @@ void QWindowsPipeWriter::run() qErrnoWarning(GetLastError(), "QWindowsPipeWriter: GetOverlappedResult failed."); return; } -#else - return; -#endif } totalWritten += written; #if defined QPIPEWRITER_DEBUG diff --git a/src/corelib/io/qwinoverlappedionotifier.cpp b/src/corelib/io/qwinoverlappedionotifier.cpp index 3f599e464f..d7745ae1b6 100644 --- a/src/corelib/io/qwinoverlappedionotifier.cpp +++ b/src/corelib/io/qwinoverlappedionotifier.cpp @@ -81,6 +81,22 @@ QT_BEGIN_NAMESPACE or WriteFile() is ignored and can be used for other purposes. \warning This class is only available on Windows. + + Due to peculiarities of the Windows I/O completion port API, users of + QWinOverlappedIoNotifier must pay attention to the following restrictions: + \list + \li File handles with a QWinOverlappedIoNotifer are assigned to an I/O + completion port until the handle is closed. It is impossible to + disassociate the file handle from the I/O completion port. + \li There can be only one QWinOverlappedIoNotifer per file handle. Creating + another QWinOverlappedIoNotifier for that file, even with a duplicated + handle, will fail. + \li Certain Windows API functions are unavailable for file handles that are + assigned to an I/O completion port. This includes the functions + \c{ReadFileEx} and \c{WriteFileEx}. + \endlist + See also the remarks in the MSDN documentation for the + \c{CreateIoCompletionPort} function. */ struct IOResult |