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Support more than 62 simultaneous VST plugins for Qt<5.10

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This commit is contained in:
Dominic Clark
2018-12-02 12:47:05 +00:00
committed by Oskar Wallgren
parent 614bca7f04
commit 9c9290eeeb
2 changed files with 29 additions and 7 deletions
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25
src/core/RemotePlugin.cpp
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@@ -54,7 +54,10 @@ ProcessWatcher::ProcessWatcher( RemotePlugin * _p ) :
void ProcessWatcher::run()
{
while( !m_quit && m_plugin->isRunning() )
m_plugin->m_process.start( m_plugin->m_exec, m_plugin->m_args );
exec();
m_plugin->m_process.moveToThread( m_plugin->thread() );
while( !m_quit && m_plugin->messagesLeft() )
{
msleep( 200 );
}
@@ -120,6 +123,11 @@ RemotePlugin::RemotePlugin() :
qWarning( "Unable to start the server." );
}
#endif
connect( &m_process, SIGNAL( finished( int, QProcess::ExitStatus ) ),
this, SLOT( processFinished( int, QProcess::ExitStatus ) ),
Qt::DirectConnection );
connect( &m_process, SIGNAL( finished( int, QProcess::ExitStatus ) ),
&m_watcher, SLOT( quit() ), Qt::DirectConnection );
}
@@ -127,7 +135,7 @@ RemotePlugin::RemotePlugin() :
RemotePlugin::~RemotePlugin()
{
m_watcher.quit();
m_watcher.stop();
m_watcher.wait();
if( m_failed == false )
@@ -200,6 +208,11 @@ bool RemotePlugin::init(const QString &pluginExecutable,
return failed();
}
// ensure the watcher is ready in case we're running again
// (e.g. 32-bit VST plugins on Windows)
m_watcher.wait();
m_watcher.reset();
QStringList args;
#ifdef SYNC_WITH_SHM_FIFO
// swap in and out for bidirectional communication
@@ -212,15 +225,15 @@ bool RemotePlugin::init(const QString &pluginExecutable,
#ifndef DEBUG_REMOTE_PLUGIN
m_process.setProcessChannelMode( QProcess::ForwardedChannels );
m_process.setWorkingDirectory( QCoreApplication::applicationDirPath() );
m_process.start( exec, args );
m_exec = exec;
m_args = args;
// we start the process on the watcher thread to work around QTBUG-8819
m_process.moveToThread( &m_watcher );
m_watcher.start( QThread::LowestPriority );
#else
qDebug() << exec << args;
#endif
connect( &m_process, SIGNAL( finished( int, QProcess::ExitStatus ) ),
this, SLOT( processFinished( int, QProcess::ExitStatus ) ) );
#ifndef SYNC_WITH_SHM_FIFO
struct pollfd pollin;
pollin.fd = m_server;