| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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. |
| */ |
| |
| #include <qpid/dispatch/buffer.h> |
| #include <qpid/dispatch/alloc.h> |
| |
| static size_t buffer_size = 512; |
| static int size_locked = 0; |
| |
| ALLOC_DECLARE(dx_buffer_t); |
| ALLOC_DEFINE_CONFIG(dx_buffer_t, sizeof(dx_buffer_t), &buffer_size, 0); |
| |
| |
| void dx_buffer_set_size(size_t size) |
| { |
| assert(!size_locked); |
| buffer_size = size; |
| } |
| |
| |
| dx_buffer_t *dx_allocate_buffer(void) |
| { |
| size_locked = 1; |
| dx_buffer_t *buf = new_dx_buffer_t(); |
| |
| DEQ_ITEM_INIT(buf); |
| buf->size = 0; |
| return buf; |
| } |
| |
| |
| void dx_free_buffer(dx_buffer_t *buf) |
| { |
| free_dx_buffer_t(buf); |
| } |
| |
| |
| unsigned char *dx_buffer_base(dx_buffer_t *buf) |
| { |
| return (unsigned char*) &buf[1]; |
| } |
| |
| |
| unsigned char *dx_buffer_cursor(dx_buffer_t *buf) |
| { |
| return ((unsigned char*) &buf[1]) + buf->size; |
| } |
| |
| |
| size_t dx_buffer_capacity(dx_buffer_t *buf) |
| { |
| return buffer_size - buf->size; |
| } |
| |
| |
| size_t dx_buffer_size(dx_buffer_t *buf) |
| { |
| return buf->size; |
| } |
| |
| |
| void dx_buffer_insert(dx_buffer_t *buf, size_t len) |
| { |
| buf->size += len; |
| assert(buf->size <= buffer_size); |
| } |
| |