Initial commit of vpp code.v1.0.0

Change-Id: Ib246f1fbfce93274020ee93ce461e3d8bd8b9f17
Signed-off-by: Ed Warnicke <eaw@cisco.com>

1 files changed, 60 insertions, 0 deletions

diff --git a/vlib-api/vlibmemory/unix_shared_memory_queue.h b/vlib-api/vlibmemory/unix_shared_memory_queue.h
new file mode 100644
index 00000000000..86bc49fc28f
--- /dev/null
+++ b/vlib-api/vlibmemory/unix_shared_memory_queue.h
@@ -0,0 +1,60 @@
+/* 
+ *------------------------------------------------------------------
+ * unix_shared_memory_queue.h - shared-memory queues
+ * 
+ * Copyright (c) 2009 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *------------------------------------------------------------------
+ */
+
+#ifndef included_unix_shared_memory_queue_h
+#define included_unix_shared_memory_queue_h
+
+#include <pthread.h>
+#include <vppinfra/mem.h>
+
+typedef struct _unix_shared_memory_queue {
+    pthread_mutex_t mutex;      /* 8 bytes */
+    pthread_cond_t condvar;     /* 8 bytes */
+    int head;
+    int tail;
+    int cursize;
+    int maxsize;
+    int elsize;
+    int consumer_pid;
+    int signal_when_queue_non_empty;
+    char data[0];
+} unix_shared_memory_queue_t;
+
+unix_shared_memory_queue_t *
+unix_shared_memory_queue_init(int nels, 
+                              int elsize, 
+                              int consumer_pid,
+                              int signal_when_queue_non_empty);
+void unix_shared_memory_queue_free(unix_shared_memory_queue_t *q);
+int unix_shared_memory_queue_add (unix_shared_memory_queue_t *q, 
+                                  u8 *elem, int nowait);
+int unix_shared_memory_queue_sub(unix_shared_memory_queue_t *q, 
+                                 u8 *elem, int nowait);
+void unix_shared_memory_queue_lock (unix_shared_memory_queue_t *q);
+void unix_shared_memory_queue_unlock (unix_shared_memory_queue_t *q);
+int unix_shared_memory_queue_is_full (unix_shared_memory_queue_t *q);
+int unix_shared_memory_queue_add_nolock (unix_shared_memory_queue_t *q, 
+                                         u8 *elem);
+
+int unix_shared_memory_queue_sub_raw (unix_shared_memory_queue_t *q, 
+                                      u8 *elem);
+int unix_shared_memory_queue_add_raw (unix_shared_memory_queue_t *q, 
+                                      u8 *elem);
+
+#endif /* included_unix_shared_memory_queue_h */