/[svn]/qsampler/trunk/src/qsamplerMainForm.cpp
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Diff of /qsampler/trunk/src/qsamplerMainForm.cpp

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revision 3437 by capela, Mon Dec 3 16:30:53 2018 UTC revision 3510 by capela, Wed Apr 10 23:03:23 2019 UTC
# Line 1  Line 1 
1  // qsamplerMainForm.cpp  // qsamplerMainForm.cpp
2  //  //
3  /****************************************************************************  /****************************************************************************
4     Copyright (C) 2004-2018, rncbc aka Rui Nuno Capela. All rights reserved.     Copyright (C) 2004-2019, rncbc aka Rui Nuno Capela. All rights reserved.
5     Copyright (C) 2007,2008,2015 Christian Schoenebeck     Copyright (C) 2007,2008,2015 Christian Schoenebeck
6    
7     This program is free software; you can redistribute it and/or     This program is free software; you can redistribute it and/or
# Line 68  const WindowFlags WindowCloseButtonHint Line 68  const WindowFlags WindowCloseButtonHint
68  }  }
69  #endif  #endif
70    
 #ifdef HAVE_SIGNAL_H  
 #include <signal.h>  
 #endif  
   
71  #ifdef CONFIG_LIBGIG  #ifdef CONFIG_LIBGIG
72  #include <gig.h>  #include <gig.h>
73  #endif  #endif
# Line 93  static inline long lroundf ( float x ) Line 89  static inline long lroundf ( float x )
89  // All winsock apps needs this.  // All winsock apps needs this.
90  #if defined(__WIN32__) || defined(_WIN32) || defined(WIN32)  #if defined(__WIN32__) || defined(_WIN32) || defined(WIN32)
91  static WSADATA _wsaData;  static WSADATA _wsaData;
92    #undef HAVE_SIGNAL_H
93  #endif  #endif
94    
95    
# Line 103  static WSADATA _wsaData; Line 100  static WSADATA _wsaData;
100    
101  #include <QSocketNotifier>  #include <QSocketNotifier>
102    
103    #include <unistd.h>
104  #include <sys/types.h>  #include <sys/types.h>
105  #include <sys/socket.h>  #include <sys/socket.h>
   
106  #include <signal.h>  #include <signal.h>
107    
108  // File descriptor for SIGUSR1 notifier.  // File descriptor for SIGUSR1 notifier.
109  static int g_fdUsr1[2];  static int g_fdSigusr1[2] = { -1, -1 };
110    
111  // Unix SIGUSR1 signal handler.  // Unix SIGUSR1 signal handler.
112  static void qsampler_sigusr1_handler ( int /* signo */ )  static void qsampler_sigusr1_handler ( int /* signo */ )
113  {  {
114          char c = 1;          char c = 1;
115    
116          (::write(g_fdUsr1[0], &c, sizeof(c)) > 0);          (::write(g_fdSigusr1[0], &c, sizeof(c)) > 0);
117    }
118    
119    // File descriptor for SIGTERM notifier.
120    static int g_fdSigterm[2] = { -1, -1 };
121    
122    // Unix SIGTERM signal handler.
123    static void qsampler_sigterm_handler ( int /* signo */ )
124    {
125            char c = 1;
126    
127            (::write(g_fdSigterm[0], &c, sizeof(c)) > 0);
128  }  }
129    
130  #endif  // HAVE_SIGNAL_H  #endif  // HAVE_SIGNAL_H
# Line 233  MainForm::MainForm ( QWidget *pParent ) Line 241  MainForm::MainForm ( QWidget *pParent )
241          // LADISH Level 1 suport.          // LADISH Level 1 suport.
242    
243          // Initialize file descriptors for SIGUSR1 socket notifier.          // Initialize file descriptors for SIGUSR1 socket notifier.
244          ::socketpair(AF_UNIX, SOCK_STREAM, 0, g_fdUsr1);          ::socketpair(AF_UNIX, SOCK_STREAM, 0, g_fdSigusr1);
245          m_pUsr1Notifier          m_pSigusr1Notifier
246                  = new QSocketNotifier(g_fdUsr1[1], QSocketNotifier::Read, this);                  = new QSocketNotifier(g_fdSigusr1[1], QSocketNotifier::Read, this);
247    
248          QObject::connect(m_pUsr1Notifier,          QObject::connect(m_pSigusr1Notifier,
249                  SIGNAL(activated(int)),                  SIGNAL(activated(int)),
250                  SLOT(handle_sigusr1()));                  SLOT(handle_sigusr1()));
251    
252          // Install SIGUSR1 signal handler.          // Install SIGUSR1 signal handler.
253      struct sigaction usr1;          struct sigaction sigusr1;
254      usr1.sa_handler = qsampler_sigusr1_handler;          sigusr1.sa_handler = qsampler_sigusr1_handler;
255      sigemptyset(&usr1.sa_mask);          sigemptyset(&sigusr1.sa_mask);
256      usr1.sa_flags = 0;          sigusr1.sa_flags = 0;
257      usr1.sa_flags |= SA_RESTART;          sigusr1.sa_flags |= SA_RESTART;
258      ::sigaction(SIGUSR1, &usr1, NULL);          ::sigaction(SIGUSR1, &sigusr1, NULL);
259    
260            // Initialize file descriptors for SIGTERM socket notifier.
261            ::socketpair(AF_UNIX, SOCK_STREAM, 0, g_fdSigterm);
262            m_pSigtermNotifier
263                    = new QSocketNotifier(g_fdSigterm[1], QSocketNotifier::Read, this);
264    
265            QObject::connect(m_pSigtermNotifier,
266                    SIGNAL(activated(int)),
267                    SLOT(handle_sigterm()));
268    
269            // Install SIGTERM signal handler.
270            struct sigaction sigterm;
271            sigterm.sa_handler = qsampler_sigterm_handler;
272            ::sigemptyset(&sigterm.sa_mask);
273            sigterm.sa_flags = 0;
274            sigterm.sa_flags |= SA_RESTART;
275            ::sigaction(SIGTERM, &sigterm, NULL);
276            ::sigaction(SIGQUIT, &sigterm, NULL);
277    
278            // Ignore SIGHUP/SIGINT signals.
279            ::signal(SIGHUP, SIG_IGN);
280            ::signal(SIGINT, SIG_IGN);
281    
282  #else   // HAVE_SIGNAL_H  #else   // HAVE_SIGNAL_H
283    
284          m_pUsr1Notifier = NULL;          m_pSigusr1Notifier = NULL;
285            m_pSigtermNotifier = NULL;
286                    
287  #endif  // !HAVE_SIGNAL_H  #endif  // !HAVE_SIGNAL_H
288    
# Line 430  MainForm::~MainForm() Line 461  MainForm::~MainForm()
461  #endif  #endif
462    
463  #if defined(HAVE_SIGNAL_H) && defined(HAVE_SYS_SOCKET_H)  #if defined(HAVE_SIGNAL_H) && defined(HAVE_SYS_SOCKET_H)
464          if (m_pUsr1Notifier)          if (m_pSigusr1Notifier)
465                  delete m_pUsr1Notifier;                  delete m_pSigusr1Notifier;
466            if (m_pSigtermNotifier)
467                    delete m_pSigtermNotifier;
468  #endif  #endif
469    
470          // Finally drop any widgets around...          // Finally drop any widgets around...
# Line 721  void MainForm::handle_sigusr1 (void) Line 754  void MainForm::handle_sigusr1 (void)
754    
755          char c;          char c;
756    
757          if (::read(g_fdUsr1[1], &c, sizeof(c)) > 0)          if (::read(g_fdSigusr1[1], &c, sizeof(c)) > 0)
758                  saveSession(false);                  saveSession(false);
759    
760  #endif  #endif
761  }  }
762    
763    
764    void MainForm::handle_sigterm (void)
765    {
766    #if defined(HAVE_SIGNAL_H) && defined(HAVE_SYS_SOCKET_H)
767    
768            char c;
769    
770            if (::read(g_fdSigterm[1], &c, sizeof(c)) > 0)
771                    close();
772    
773    #endif
774    }
775    
776    
777  void MainForm::updateViewMidiDeviceStatusMenu (void)  void MainForm::updateViewMidiDeviceStatusMenu (void)
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