Merge CV, ver=5.1; ops/methods from HV, and interface from CV where possible

[goodguy/history.git] / cinelerra-5.1 / cinelerra / shmemory.C

diff --git a/cinelerra-5.1/cinelerra/shmemory.C b/cinelerra-5.1/cinelerra/shmemory.C
new file mode 100644 (file)
index 0000000..0e220e5
--- /dev/null
+++ b/cinelerra-5.1/cinelerra/shmemory.C
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+
+/*
+ * CINELERRA
+ * Copyright (C) 2008 Adam Williams <broadcast at earthling dot net>
+ * 
+ * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ * 
+ */
+
+#include <string.h>
+#include "bcipc.h"
+#include "shmemory.h"
+
+
+SharedMem::SharedMem(long size)
+{
+       shmid = shmget(IPC_PRIVATE, size, IPC_CREAT | 0777);
+       if(shmid < 0)
+               perror("SharedMem::SharedMem");
+       else
+       {
+               data = (char*)shmat(shmid, 0, 0);
+               shmctl(shmid, IPC_RMID, 0);
+       }
+       this->size = size;
+       client = 0;
+}
+
+SharedMem::SharedMem(int id, long size)
+{
+       this->shmid = id;
+
+       data = (char*)shmat(shmid, 0, 0);
+       this->size = size;
+       client = 1;
+}
+
+SharedMem::~SharedMem()
+{
+       shmdt(data);
+       data = 0;
+       size = 0;
+       shmid = 0;
+}
+
+int SharedMem::get_id()
+{
+       return shmid;
+}
+
+long SharedMem::get_size()
+{
+       return size;
+}
+