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/*
+----------------------------------------------------------------------+
| PHP Version 4 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2003 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 2.02 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available at through the world-wide-web at |
| http://www.php.net/license/2_02.txt. |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Wez Furlong <wez@thebrainroom.com> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
/* Memory Mapping interface for streams */
#include "php.h"
#include "php_streams_int.h"
PHPAPI char *_php_stream_mmap_range(php_stream *stream, size_t offset, size_t length, php_stream_mmap_operation_t mode, size_t *mapped_len TSRMLS_DC)
{
php_stream_mmap_range range = { offset, length, mode, NULL };
/* TODO: Enforce system policy and limits for mmap sizes ? */
if (PHP_STREAM_OPTION_RETURN_OK == php_stream_set_option(stream, PHP_STREAM_OPTION_MMAP_API, PHP_STREAM_MMAP_MAP_RANGE, &range)) {
if (mapped_len) {
*mapped_len = range.length;
}
return range.mapped;
}
return NULL;
}
PHPAPI int _php_stream_mmap_unmap(php_stream *stream TSRMLS_DC)
{
return php_stream_set_option(stream, PHP_STREAM_OPTION_MMAP_API, PHP_STREAM_MMAP_UNMAP, NULL) == PHP_STREAM_OPTION_RETURN_OK ? 1 : 0;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/
|
