Tomcat example source code file (mmap.c)

This example Tomcat source code file (mmap.c) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Tomcat tags/keywords

apr_enotimpl, apr_enotimpl, apr_has_mmap, apr_has_mmap, j2p, j2p, mmap, null, p2j, tcn_implement_call, tcn_throw_if_err, unreferenced, unreferenced, unreferenced_stdargs

The Tomcat mmap.c source code

/* 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.
 */

/*
 *
 * @author Mladen Turk
 * @version $Revision: 466585 $, $Date: 2006-10-22 00:16:34 +0200 (dim., 22 oct. 2006) $
 */
 
#include "tcn.h"
#include "apr_mmap.h"

TCN_IMPLEMENT_CALL(jlong, Mmap, create)(TCN_STDARGS, jlong file,
                                        jlong offset, jlong size,
                                        jint flag, jlong pool)
{
#if APR_HAS_MMAP
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    apr_file_t *f = J2P(file, apr_file_t *);
    apr_mmap_t *m = NULL;

    UNREFERENCED(o);
    TCN_THROW_IF_ERR(apr_mmap_create(&m, f, (apr_off_t)offset,
                                     (apr_size_t)size,
                                     (apr_uint32_t)flag, p), m);

cleanup:
    return P2J(m);
#else
    UNREFERENCED(o);
    tcn_ThrowAPRException(e, APR_ENOTIMPL);
    return 0;
#endif
}

TCN_IMPLEMENT_CALL(jlong, Mmap, dup)(TCN_STDARGS, jlong mmap,
                                     jlong pool)
{
#if APR_HAS_MMAP
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    apr_mmap_t *m = J2P(mmap, apr_mmap_t *);
    apr_mmap_t *newm = NULL;

    UNREFERENCED(o);
    TCN_THROW_IF_ERR(apr_mmap_dup(&newm, m, p), newm);

cleanup:
    return P2J(newm);
#else
    UNREFERENCED(o);
    tcn_ThrowAPRException(e, APR_ENOTIMPL);
    return 0;
#endif
}

TCN_IMPLEMENT_CALL(jint, Mmap, delete)(TCN_STDARGS, jlong mmap)
{
#if APR_HAS_MMAP
    apr_mmap_t *m = J2P(mmap, apr_mmap_t *);

    UNREFERENCED_STDARGS;
    return apr_mmap_delete(m);

#else
    UNREFERENCED_STDARGS;
    UNREFERENCED(mmap);
    return APR_ENOTIMPL;
#endif
}

TCN_IMPLEMENT_CALL(jlong, Mmap, offset)(TCN_STDARGS, jlong mmap,
                                        jlong offset)
{
#if APR_HAS_MMAP
    apr_mmap_t *m = J2P(mmap, apr_mmap_t *);
    void *r;

    UNREFERENCED(o);
    TCN_THROW_IF_ERR(apr_mmap_offset(&r, m, (apr_off_t)offset), r);

cleanup:
    return P2J(r);

#else
    UNREFERENCED(o);
    tcn_ThrowAPRException(e, APR_ENOTIMPL);
    return 0;
#endif
}