diff options
Diffstat (limited to 'libs/pbd/semutils.cc')
-rw-r--r-- | libs/pbd/semutils.cc | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/libs/pbd/semutils.cc b/libs/pbd/semutils.cc new file mode 100644 index 0000000000..b07b791fd0 --- /dev/null +++ b/libs/pbd/semutils.cc @@ -0,0 +1,49 @@ +/* + Copyright (C) 2010 Paul Davis + + 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. + + 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, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. +*/ + +#include "pbd/semutils.h" +#include "pbd/failed_constructor.h" + +using namespace PBD; + +ProcessSemaphore::ProcessSemaphore (const char* name, int val) +{ +#ifdef __APPLE__ + if ((_sem = sem_open (name, O_CREAT, 0600, val)) == (sem_t*) SEM_FAILED) { + throw failed_constructor (); + } + + /* this semaphore does not exist for IPC */ + + if (sem_unlink (name)) { + throw failed_constructor (); + } + +#else + if (sem_init (&sem, 0, val)) { + throw failed_constructor (); + } +#endif +} + +ProcessSemaphore::~ProcessSemaphore () +{ +#ifdef __APPLE__ + sem_close (ptr_to_sem()); +#endif +} |