1 files changed, 59 insertions, 0 deletions
diff --git a/src/core/surface/byte_buffer_queue.h b/src/core/surface/byte_buffer_queue.h
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+++ b/src/core/surface/byte_buffer_queue.h
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+/*
+ *
+ * Copyright 2014, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef __GRPC_INTERNAL_SURFACE_BYTE_BUFFER_QUEUE_H__
+#define __GRPC_INTERNAL_SURFACE_BYTE_BUFFER_QUEUE_H__
+
+#include <grpc/byte_buffer.h>
+
+/* TODO(ctiller): inline an element or two into this struct to avoid per-call
+                  allocations */
+typedef struct {
+  grpc_byte_buffer **data;
+  size_t count;
+  size_t capacity;
+} grpc_bbq_array;
+
+/* should be initialized by zeroing memory */
+typedef struct {
+  size_t drain_pos;
+  grpc_bbq_array filling;
+  grpc_bbq_array draining;
+} grpc_byte_buffer_queue;
+
+void grpc_bbq_destroy(grpc_byte_buffer_queue *q);
+grpc_byte_buffer *grpc_bbq_pop(grpc_byte_buffer_queue *q);
+int grpc_bbq_empty(grpc_byte_buffer_queue *q);
+void grpc_bbq_push(grpc_byte_buffer_queue *q, grpc_byte_buffer *bb);
+
+#endif  /* __GRPC_INTERNAL_SURFACE_BYTE_BUFFER_QUEUE_H__ */