view base/Thread.cpp @ 1879:652c5360e682

Ensure transforms are populated before instantiateDefaultPluginFor runs - otherwise if we have prior knowledge of a transform id, we can find ourselves trying to instantiate it before the plugin factory has heard of it and e.g. knows which server to use
author Chris Cannam
date Thu, 25 Jun 2020 12:20:06 +0100
parents 0e0947896fd3
children
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam.
    
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/

#include "Thread.h"

#ifndef _WIN32
#include <pthread.h>
#endif

//#define DEBUG_MUTEX_LOCKER 1

#include <iostream>

Thread::Thread(Type type, QObject *parent) :
    QThread(parent),
    m_type(type)
{
    setStackSize(512 * 1024);
}

void
Thread::start()
{
    QThread::start();

#ifndef _WIN32
    struct sched_param param;
    ::memset(&param, 0, sizeof(param));

    if (m_type == RTThread) {

        param.sched_priority = 5;

        if (::pthread_setschedparam(pthread_self(), SCHED_FIFO, &param)) {
            ::perror("INFO: pthread_setschedparam to SCHED_FIFO failed");
        }

    } else {

        if (::pthread_setschedparam(pthread_self(), SCHED_OTHER, &param)) {
            ::perror("WARNING: pthread_setschedparam to SCHED_OTHER failed");
        }
    }        

#endif
}

MutexLocker::MutexLocker(QMutex *mutex, const char *name) :
    m_profiler(name, false),
    m_printer(name),
    m_locker(mutex)
{
#ifdef DEBUG_MUTEX_LOCKER
    cerr << "... locked mutex " << mutex << endl;
#endif
    m_profiler.end();
}

MutexLocker::~MutexLocker()
{
}

MutexLocker::Printer::Printer(const char *name) :
    m_name(name)
{
#ifdef DEBUG_MUTEX_LOCKER
    cerr << "MutexLocker: Locking   \"" << m_name << "\" in "
              << (void *)QThread::currentThreadId() << endl;
#else
    (void)m_name;
#endif
}

MutexLocker::Printer::~Printer()
{
#ifdef DEBUG_MUTEX_LOCKER
    cerr << "MutexLocker: Unlocking \"" << m_name
              << "\" in " << (void *)QThread::currentThreadId() << endl;
#endif
}