android/JackControlAPIAndroid.cpp

   1 // u/* -*- Mode: C++ ; c-basic-offset: 4 -*- */
   2 /*
   3   JACK control API implementation
   4
   5   Copyright (C) 2008 Nedko Arnaudov
   6   Copyright (C) 2008 Grame
   7   Copyright (C) 2013 Samsung Electronics
   8
   9   This program is free software; you can redistribute it and/or modify
  10   it under the terms of the GNU General Public License as published by
  11   the Free Software Foundation; version 2 of the License.
  12
  13   This program is distributed in the hope that it will be useful,
  14   but WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16   GNU General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with this program; if not, write to the Free Software
  20   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21
  22 */
  23
  24 #ifndef WIN32
  25 #include <stdint.h>
  26 #include <dirent.h>
  27 #include <pthread.h>
  28 #endif
  29
  30 #include "types.h"
  31 #include <string.h>
  32 #include <errno.h>
  33 #include <stdio.h>
  34 #include <assert.h>
  35 #include <signal.h>
  36
  37 #include "JackControlAPIAndroid.h"
  38 #include "JackConstants.h"
  39 #include "JackServerGlobals.h"
  40
  41 using namespace Jack;
  42
  43 struct jackctl_sigmask
  44 {
  45     sigset_t signals;
  46 };
  47
  48 static jackctl_sigmask sigmask;
  49
  50 SERVER_EXPORT int
  51 jackctl_wait_signals_and_return(jackctl_sigmask_t * sigmask)
  52 {
  53     int sig;
  54     bool waiting = true;
  55
  56     while (waiting) {
  57     #if defined(sun) && !defined(__sun__) // SUN compiler only, to check
  58         sigwait(&sigmask->signals);
  59     #else
  60         sigwait(&sigmask->signals, &sig);
  61     #endif
  62         fprintf(stderr, "Jack main caught signal %d\n", sig);
  63
  64         switch (sig) {
  65             case SIGUSR1:
  66                 //jack_dump_configuration(engine, 1);
  67                 break;
  68             case SIGUSR2:
  69                 // driver exit
  70                 waiting = false;
  71                 break;
  72             case SIGTTOU:
  73                 break;
  74             default:
  75                 waiting = false;
  76                 break;
  77         }
  78     }
  79
  80     if (sig != SIGSEGV) {
  81         // unblock signals so we can see them during shutdown.
  82         // this will help prod developers not to lose sight of
  83         // bugs that cause segfaults etc. during shutdown.
  84         sigprocmask(SIG_UNBLOCK, &sigmask->signals, 0);
  85     }
  86
  87     return sig;
  88 }
  89