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-rw-r--r--src/svm/queue.h68
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diff --git a/src/svm/queue.h b/src/svm/queue.h
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+/*
+ *------------------------------------------------------------------
+ * svm_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_svm_queue_h
+#define included_svm_queue_h
+
+#include <pthread.h>
+
+typedef struct _svm_queue
+{
+ pthread_mutex_t mutex; /* 8 bytes */
+ pthread_cond_t condvar; /* 8 bytes */
+ int head;
+ int tail;
+ volatile int cursize;
+ int maxsize;
+ int elsize;
+ int consumer_pid;
+ int signal_when_queue_non_empty;
+ char data[0];
+} svm_queue_t;
+
+svm_queue_t *svm_queue_init (int nels,
+ int elsize,
+ int consumer_pid,
+ int signal_when_queue_non_empty);
+void svm_queue_free (svm_queue_t * q);
+int svm_queue_add (svm_queue_t * q, u8 * elem, int nowait);
+int svm_queue_add2 (svm_queue_t * q, u8 * elem, u8 * elem2, int nowait);
+int svm_queue_sub (svm_queue_t * q, u8 * elem, int nowait);
+int svm_queue_sub2 (svm_queue_t * q, u8 * elem);
+void svm_queue_lock (svm_queue_t * q);
+void svm_queue_unlock (svm_queue_t * q);
+int svm_queue_is_full (svm_queue_t * q);
+int svm_queue_add_nolock (svm_queue_t * q, u8 * elem);
+int svm_queue_sub_raw (svm_queue_t * q, u8 * elem);
+int svm_queue_add_raw (svm_queue_t * q, u8 * elem);
+
+/*
+ * DEPRECATED please use svm_queue_t instead
+ */
+typedef svm_queue_t unix_shared_memory_queue_t;
+
+#endif /* included_svm_queue_h */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */