| /* ==================================================================== |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2000 The Apache Software Foundation. All rights |
| * reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * |
| * 3. The end-user documentation included with the redistribution, |
| * if any, must include the following acknowledgment: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowledgment may appear in the software itself, |
| * if and wherever such third-party acknowledgments normally appear. |
| * |
| * 4. The names "Apache" and "Apache Software Foundation" must |
| * not be used to endorse or promote products derived from this |
| * software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache", |
| * nor may "Apache" appear in their name, without prior written |
| * permission of the Apache Software Foundation. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
| * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR |
| * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
| * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
| * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
| * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
| * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| |
| #include "httpd.h" |
| #include "ap_buckets.h" |
| #include <stdlib.h> |
| |
| /* |
| * The size of heap bucket memory allocations. |
| * XXX: This is currently a guess and should be adjusted to an |
| * empirically good value. |
| */ |
| #ifndef DEFAULT_BUCKET_SIZE |
| #define DEFAULT_BUCKET_SIZE (4096) |
| #endif |
| |
| static apr_status_t heap_read(ap_bucket *b, const char **str, |
| apr_size_t *len, ap_read_type block) |
| { |
| ap_bucket_shared *s = b->data; |
| ap_bucket_heap *h = s->data; |
| |
| *str = h->base + s->start; |
| *len = s->end - s->start; |
| return APR_SUCCESS; |
| } |
| |
| static void heap_destroy(void *data) |
| { |
| ap_bucket_heap *h; |
| |
| h = ap_bucket_destroy_shared(data); |
| if (h == NULL) { |
| return; |
| } |
| free(h->base); |
| free(h); |
| } |
| |
| AP_DECLARE(ap_bucket *) ap_bucket_make_heap(ap_bucket *b, |
| const char *buf, apr_size_t length, int copy, apr_size_t *w) |
| { |
| ap_bucket_heap *h; |
| |
| h = malloc(sizeof(*h)); |
| if (h == NULL) { |
| return NULL; |
| } |
| |
| if (copy) { |
| h->base = malloc(DEFAULT_BUCKET_SIZE); |
| if (h->base == NULL) { |
| free(h); |
| return NULL; |
| } |
| h->alloc_len = DEFAULT_BUCKET_SIZE; |
| if (length > DEFAULT_BUCKET_SIZE) { |
| length = DEFAULT_BUCKET_SIZE; |
| } |
| memcpy(h->base, buf, length); |
| } |
| else { |
| /* XXX: we lose the const qualifier here which indicates |
| * there's something screwy with the API... |
| */ |
| h->base = (char *) buf; |
| h->alloc_len = length; |
| } |
| |
| b = ap_bucket_make_shared(b, h, 0, length); |
| if (b == NULL) { |
| if (copy) { |
| free(h->base); |
| } |
| free(h); |
| return NULL; |
| } |
| |
| b->type = &ap_heap_type; |
| |
| if (w) |
| *w = length; |
| |
| return b; |
| } |
| |
| AP_DECLARE(ap_bucket *) ap_bucket_create_heap( |
| const char *buf, apr_size_t length, int copy, apr_size_t *w) |
| { |
| ap_bucket_do_create(ap_bucket_make_heap(b, buf, length, copy, w)); |
| } |
| |
| const ap_bucket_type ap_heap_type = { |
| "HEAP", 4, |
| heap_destroy, |
| heap_read, |
| ap_bucket_setaside_notimpl, |
| ap_bucket_split_shared |
| }; |