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/*
* 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);
}
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