diff options
Diffstat (limited to 'main/streams/mmap.c')
| -rw-r--r-- | main/streams/mmap.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/main/streams/mmap.c b/main/streams/mmap.c new file mode 100644 index 0000000000..791b96436f --- /dev/null +++ b/main/streams/mmap.c @@ -0,0 +1,52 @@ +/* + +----------------------------------------------------------------------+ + | 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 + */ |