1 files changed, 100 insertions, 0 deletions
diff --git a/storage/ndb/src/common/transporter/SHM_Transporter.unix.cpp b/storage/ndb/src/common/transporter/SHM_Transporter.unix.cpp
new file mode 100644
index 00000000000..28882324fc0
--- /dev/null
+++ b/storage/ndb/src/common/transporter/SHM_Transporter.unix.cpp
@@ -0,0 +1,100 @@
+/* Copyright (C) 2003 MySQL AB
+
+   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 <ndb_global.h>
+
+#include "SHM_Transporter.hpp"
+#include "TransporterInternalDefinitions.hpp"
+#include <TransporterCallback.hpp>
+#include <NdbSleep.h>
+#include <NdbOut.hpp>
+
+#include <sys/ipc.h>
+#include <sys/shm.h>
+
+bool
+SHM_Transporter::ndb_shm_create()
+{
+  shmId = shmget(shmKey, shmSize, IPC_CREAT | 960);
+  if(shmId == -1) {
+    perror("shmget: ");
+    return false;
+  }
+  return true;
+}
+
+bool
+SHM_Transporter::ndb_shm_get()
+{
+  shmId = shmget(shmKey, shmSize, 0);
+  if(shmId == -1) {
+    perror("shmget: ");
+    return false;
+  }
+  return true;
+}
+
+bool
+SHM_Transporter::ndb_shm_attach()
+{
+  shmBuf = (char *)shmat(shmId, 0, 0);
+  if(shmBuf == 0) {
+    perror("shmat: ");
+    return false;
+  }
+  return true;
+}
+
+bool
+SHM_Transporter::checkConnected(){
+  struct shmid_ds info;
+  const int res = shmctl(shmId, IPC_STAT, &info);
+  if(res == -1){
+    report_error(TE_SHM_IPC_STAT);
+    return false;
+  }
+ 
+  if(info.shm_nattch != 2){
+    report_error(TE_SHM_DISCONNECT);
+    return false;
+  }
+  return true;
+}
+
+void
+SHM_Transporter::disconnectImpl(){
+  if(_attached){
+    const int res = shmdt(shmBuf);
+    if(res == -1){
+      perror("shmdelete: ");
+      return;   
+    }
+    _attached = false;
+    if(!isServer && _shmSegCreated)
+      _shmSegCreated = false;
+  }
+  
+  if(isServer && _shmSegCreated){
+    const int res = shmctl(shmId, IPC_RMID, 0);
+    if(res == -1){
+      report_error(TE_SHM_UNABLE_TO_REMOVE_SEGMENT);
+      return;
+    }
+    _shmSegCreated = false;
+  }
+  setupBuffersDone=false;
+}