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authorhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 03:10:21 -0500
committerhongbotian <hongbo.tianhongbo@huawei.com>2015-11-30 03:10:21 -0500
commitc0b7206652b2852bc574694e7ba07ba1c2acdc00 (patch)
tree5cb95cb0e19e03610525903df46279df2c3b7eb1 /rubbos/app/httpd-2.0.64/srclib/apr/include/apr_mmap.h
parentb6d3d6e668b793220f2d3af1bc3e828553dc3fe6 (diff)
delete app
Change-Id: Id4c572809969ebe89e946e88063eaed262cff3f2 Signed-off-by: hongbotian <hongbo.tianhongbo@huawei.com>
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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.
- */
-
-#ifndef APR_MMAP_H
-#define APR_MMAP_H
-
-/**
- * @file apr_mmap.h
- * @brief APR MMAP routines
- */
-
-#include "apr.h"
-#include "apr_pools.h"
-#include "apr_errno.h"
-#include "apr_ring.h"
-#include "apr_file_io.h" /* for apr_file_t */
-
-#ifdef BEOS
-#include <kernel/OS.h>
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-/**
- * @defgroup apr_mmap MMAP (Memory Map) Routines
- * @ingroup APR
- * @{
- */
-
-/** MMap opened for reading */
-#define APR_MMAP_READ 1
-/** MMap opened for writing */
-#define APR_MMAP_WRITE 2
-
-/** @see apr_mmap_t */
-typedef struct apr_mmap_t apr_mmap_t;
-
-/**
- * @remark
- * As far as I can tell the only really sane way to store an MMAP is as a
- * void * and a length. BeOS requires this area_id, but that's just a little
- * something extra. I am exposing this type, because it doesn't make much
- * sense to keep it private, and opening it up makes some stuff easier in
- * Apache.
- */
-/** The MMAP structure */
-struct apr_mmap_t {
- /** The pool the mmap structure was allocated out of. */
- apr_pool_t *cntxt;
-#ifdef BEOS
- /** An area ID. Only valid on BeOS */
- area_id area;
-#endif
-#ifdef WIN32
- /** The handle of the file mapping */
- HANDLE mhandle;
- /** The start of the real memory page area (mapped view) */
- void *mv;
- /** The physical start, size and offset */
- apr_off_t pstart;
- apr_size_t psize;
- apr_off_t poffset;
-#endif
- /** The start of the memory mapped area */
- void *mm;
- /** The amount of data in the mmap */
- apr_size_t size;
- /** @deprecated this field is no longer used and will be removed
- * in APR 1.0 */
- int unused;
- /** ring of apr_mmap_t's that reference the same
- * mmap'ed region; acts in place of a reference count */
- APR_RING_ENTRY(apr_mmap_t) link;
-};
-
-#if APR_HAS_MMAP || defined(DOXYGEN)
-
-/** @def APR_MMAP_THRESHOLD
- * Files have to be at least this big before they're mmap()d. This is to deal
- * with systems where the expense of doing an mmap() and an munmap() outweighs
- * the benefit for small files. It shouldn't be set lower than 1.
- */
-#ifdef MMAP_THRESHOLD
-# define APR_MMAP_THRESHOLD MMAP_THRESHOLD
-#else
-# ifdef SUNOS4
-# define APR_MMAP_THRESHOLD (8*1024)
-# else
-# define APR_MMAP_THRESHOLD 1
-# endif /* SUNOS4 */
-#endif /* MMAP_THRESHOLD */
-
-/** @def APR_MMAP_LIMIT
- * Maximum size of MMap region
- */
-#ifdef MMAP_LIMIT
-# define APR_MMAP_LIMIT MMAP_LIMIT
-#else
-# define APR_MMAP_LIMIT (4*1024*1024)
-#endif /* MMAP_LIMIT */
-
-/** Can this file be MMaped */
-#define APR_MMAP_CANDIDATE(filelength) \
- ((filelength >= APR_MMAP_THRESHOLD) && (filelength < APR_MMAP_LIMIT))
-
-/* Function definitions */
-
-/**
- * Create a new mmap'ed file out of an existing APR file.
- * @param newmmap The newly created mmap'ed file.
- * @param file The file turn into an mmap.
- * @param offset The offset into the file to start the data pointer at.
- * @param size The size of the file
- * @param flag bit-wise or of:
- * <PRE>
- * APR_MMAP_READ MMap opened for reading
- * APR_MMAP_WRITE MMap opened for writing
- * </PRE>
- * @param cntxt The pool to use when creating the mmap.
- */
-APR_DECLARE(apr_status_t) apr_mmap_create(apr_mmap_t **newmmap,
- apr_file_t *file, apr_off_t offset,
- apr_size_t size, apr_int32_t flag,
- apr_pool_t *cntxt);
-
-/**
- * Duplicate the specified MMAP.
- * @param new_mmap The structure to duplicate into.
- * @param old_mmap The mmap to duplicate.
- * @param p The pool to use for new_mmap.
- * @param transfer_ownership DEPRECATED: this param is now ignored
- * and should be removed prior to APR 1.0
- */
-APR_DECLARE(apr_status_t) apr_mmap_dup(apr_mmap_t **new_mmap,
- apr_mmap_t *old_mmap,
- apr_pool_t *p,
- int transfer_ownership);
-
-#if defined(DOXYGEN)
-/**
- * Transfer the specified MMAP to a different pool
- * @param new_mmap The structure to duplicate into.
- * @param old_mmap The file to transfer.
- * @param p The pool to use for new_mmap.
- * @deprecated Just use apr_mmap_dup(). The transfer_ownership flag will
- * go away soon anyway.
- */
-APR_DECLARE(apr_status_t) apr_mmap_setaside(apr_mmap_t **new_mmap,
- apr_mmap_t *old_mmap,
- apr_pool_t *p);
-#else
-#define apr_mmap_setaside(new_mmap, old_mmap, p) apr_mmap_dup(new_mmap, old_mmap, p, 1)
-#endif /* DOXYGEN */
-
-/**
- * Remove a mmap'ed.
- * @param mm The mmap'ed file.
- */
-APR_DECLARE(apr_status_t) apr_mmap_delete(apr_mmap_t *mm);
-
-/**
- * Move the pointer into the mmap'ed file to the specified offset.
- * @param addr The pointer to the offset specified.
- * @param mm The mmap'ed file.
- * @param offset The offset to move to.
- */
-APR_DECLARE(apr_status_t) apr_mmap_offset(void **addr, apr_mmap_t *mm,
- apr_off_t offset);
-
-#endif /* APR_HAS_MMAP */
-
-/** @} */
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ! APR_MMAP_H */