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2008-01-30 Marcus Brinkmann <marcus@g10code.de>

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* kdpipeiodevice.cpp: New version by Frank Osterfeld, fixes race
	condition.
This commit is contained in:
Marcus Brinkmann 2008-01-30 13:24:21 +00:00
parent 2b5033018f
commit 2cf46b3ca9
2 changed files with 20 additions and 7 deletions
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5
gpgme/ChangeLog
View File

@ -1,3 +1,8 @@
2008-01-30 Marcus Brinkmann <marcus@g10code.de>
* kdpipeiodevice.cpp: New version by Frank Osterfeld, fixes race
condition.
2008-01-28 Marcus Brinkmann <marcus@g10code.de>
* engine-gpgsm.c (map_input_enc): Rename to ...

20
gpgme/kdpipeiodevice.cpp
View File

@ -106,6 +106,7 @@ public:
bool error;
bool eofShortCut;
int errorCode;
bool isReading;
bool consumerBlocksOnUs;
private:
@ -127,6 +128,7 @@ Reader::Reader( int fd_, Qt::HANDLE handle_ )
error( false ),
eofShortCut( false ),
errorCode( 0 ),
isReading( false ),
consumerBlocksOnUs( false ),
rptr( 0 ), wptr( 0 )
{
@ -321,24 +323,28 @@ bool KDPipeIODevice::Private::startWriterThread()
void KDPipeIODevice::Private::emitReadyRead()
{
static int s_counter = 0;
const int counter = s_counter++;
QPointer<Private> thisPointer( this );
qDebug( "KDPipeIODevice::Private::emitReadyRead %p, %d", this, counter );
qDebug( "KDPipeIODevice::Private::emitReadyRead %p", this );
emit q->readyRead();
if ( !thisPointer )
return;
bool mustNotify = false;
if ( reader ) {
qDebug( "KDPipeIODevice::Private::emitReadyRead %p, %d: locking reader (CONSUMER THREAD)", this, counter );
qDebug( "KDPipeIODevice::Private::emitReadyRead %p: locking reader (CONSUMER THREAD)", this );
synchronized( reader ) {
qDebug( "KDPipeIODevice::Private::emitReadyRead %p, %d: locked reader (CONSUMER THREAD)", this, counter );
qDebug( "KDPipeIODevice::Private::emitReadyRead %p: locked reader (CONSUMER THREAD)", this );
reader->readyReadSentCondition.wakeAll();
mustNotify = !reader->bufferEmpty() && reader->isReading;
qDebug( "KDPipeIODevice::emitReadyRead %p: bufferEmpty: %d reader in ReadFile: %d", this, reader->bufferEmpty(), reader->isReading );
}
}
qDebug( "KDPipeIODevice::Private::emitReadyRead %p leaving %d", this, counter );
if ( mustNotify )
QTimer::singleShot( 100, this, SLOT( emitReadyRead() ) );
qDebug( "KDPipeIODevice::Private::emitReadyRead %p leaving", this );
}
@ -732,10 +738,12 @@ void Reader::run() {
qDebug( "%p: Reader::run: trying to read %d bytes", this, numBytes );
#ifdef Q_OS_WIN32
isReading = true;
mutex.unlock();
DWORD numRead;
const bool ok = ReadFile( handle, buffer + wptr, numBytes, &numRead, 0 );
mutex.lock();
isReading = false;
if ( ok ) {
if ( numRead == 0 ) {
qDebug( "%p: Reader::run: got eof (numRead==0)", this );