unix/app.cpp

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/*
* This program source code file is part of KiCad, a free EDA CAD application.
*
* Copyright (C) 2020 Mark Roszko <[email protected]>
* Copyright The KiCad Developers, see AUTHORS.txt for contributors.
*
* 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 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program.  If not, see <https://www.gnu.org/licenses/>.
*/
 
#include <kiplatform/app.h>
 
#ifdef __linux__
#include <sys/resource.h>
#include <sys/syscall.h>
#include <unistd.h>
#endif
 
#include <glib.h>
 
#include <wx/string.h>
#include <wx/utils.h>
 
 
/*
 * Function to attach to the glib logger to eat the output it gives so we don't
 * get the message spam on the terminal from wxWidget's abuse of the GTK API.
 */
static GLogWriterOutput nullLogWriter( GLogLevelFlags log_level, const GLogField* fields,
                                       gsize n_fields, gpointer user_data )
{
    return G_LOG_WRITER_HANDLED;
}
 
 
bool KIPLATFORM::APP::Init()
{
    // Set KICAD_SHOW_GTK_MESSAGES=1 env var to show GTK messages,
    // otherwise, we hide them to avoid message spam.
 
    wxString showMessages;
    wxGetEnv( wxT( "KICAD_SHOW_GTK_MESSAGES" ), &showMessages );
 
    if( showMessages.IsEmpty() || showMessages != "1" )
    {
        // Attach a logger that will consume the annoying GTK error messages
        g_log_set_writer_func( nullLogWriter, nullptr, nullptr );
    }
 
    return true;
}
 
 
void KIPLATFORM::APP::EnableDarkMode( bool aForce )
{
}
 
 
bool KIPLATFORM::APP::AttachConsole( bool aTryAlloc )
{
    // Not implemented on this platform
    return true;
}
 
 
bool KIPLATFORM::APP::IsOperatingSystemUnsupported()
{
    // Not implemented on this platform
    return false;
}
 
 
bool KIPLATFORM::APP::RegisterApplicationRestart( const wxString& aCommandLine )
{
    // Not implemented on this platform
    return true;
}
 
 
bool KIPLATFORM::APP::UnregisterApplicationRestart()
{
    // Not implemented on this platform
    return true;
}
 
 
bool KIPLATFORM::APP::SupportsShutdownBlockReason()
{
    return false;
}
 
 
void KIPLATFORM::APP::RemoveShutdownBlockReason( wxWindow* aWindow )
{
}
 
 
void KIPLATFORM::APP::SetShutdownBlockReason( wxWindow* aWindow, const wxString& aReason )
{
}
 
 
void KIPLATFORM::APP::ForceTimerMessagesToBeCreatedIfNecessary()
{
}
 
 
void KIPLATFORM::APP::AddDynamicLibrarySearchPath( const wxString& aPath )
{
}
 
 
bool KIPLATFORM::APP::SetCurrentThreadPriority( bool aRaise )
{
#ifdef __linux__
    // Each Linux thread has its own nice value, and a negative one needs privilege
    const pid_t tid = static_cast<pid_t>( syscall( SYS_gettid ) );
 
    return setpriority( PRIO_PROCESS, tid, aRaise ? -5 : 5 ) == 0;
#else
    return false;
#endif
}