| /* ==================================================================== |
| * 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. |
| * ==================================================================== |
| */ |
| |
| #include <apr_pools.h> |
| #include <apr_mmap.h> |
| |
| #include "serf.h" |
| #include "serf_bucket_util.h" |
| |
| #if APR_HAS_MMAP |
| |
| typedef struct mmap_context_t { |
| apr_mmap_t *mmap; |
| void *current; |
| apr_off_t offset; |
| apr_size_t remaining; |
| } mmap_context_t; |
| |
| |
| serf_bucket_t *serf_bucket_mmap_create( |
| apr_mmap_t *file_mmap, |
| serf_bucket_alloc_t *allocator) |
| { |
| mmap_context_t *ctx; |
| |
| ctx = serf_bucket_mem_alloc(allocator, sizeof(*ctx)); |
| ctx->mmap = file_mmap; |
| ctx->current = NULL; |
| ctx->offset = 0; |
| ctx->remaining = ctx->mmap->size; |
| |
| return serf_bucket_create(&serf_bucket_type_mmap, allocator, ctx); |
| } |
| |
| static apr_status_t serf_mmap_read(serf_bucket_t *bucket, |
| apr_size_t requested, |
| const char **data, apr_size_t *len) |
| { |
| mmap_context_t *ctx = bucket->data; |
| apr_status_t status; |
| void *rd; |
| |
| if (requested == SERF_READ_ALL_AVAIL || requested > ctx->remaining) { |
| *len = ctx->remaining; |
| } |
| else { |
| *len = requested; |
| } |
| |
| /* ### Would it be faster to call this once and do the offset ourselves? */ |
| status = apr_mmap_offset(&rd, ctx->mmap, ctx->offset); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| |
| *data = rd; |
| |
| /* For the next read... */ |
| ctx->offset += *len; |
| ctx->remaining -= *len; |
| |
| if (ctx->remaining == 0) { |
| return APR_EOF; |
| } |
| return APR_SUCCESS; |
| } |
| |
| static apr_status_t serf_mmap_readline(serf_bucket_t *bucket, |
| int acceptable, int *found, |
| const char **data, apr_size_t *len) |
| { |
| mmap_context_t *ctx = bucket->data; |
| apr_status_t status; |
| const char *eol; |
| void *end; |
| |
| /* ### Would it be faster to call this once and do the offset ourselves? */ |
| status = apr_mmap_offset(&end, ctx->mmap, ctx->offset); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| |
| *data = eol = end; |
| |
| *len = ctx->remaining; |
| serf_util_readline(&eol, len, acceptable, found); |
| *len = eol - *data; |
| |
| ctx->offset += *len; |
| ctx->remaining -= *len; |
| |
| if (ctx->remaining == 0) { |
| return APR_EOF; |
| } |
| return APR_SUCCESS; |
| } |
| |
| static apr_status_t serf_mmap_peek(serf_bucket_t *bucket, |
| const char **data, |
| apr_size_t *len) |
| { |
| mmap_context_t *ctx = bucket->data; |
| apr_status_t status; |
| void *rd; |
| |
| /* return whatever we have left */ |
| status = apr_mmap_offset(&rd, ctx->mmap, ctx->offset); |
| if (SERF_BUCKET_READ_ERROR(status)) |
| return status; |
| |
| *data = rd; |
| *len = ctx->remaining; |
| |
| /* we returned everything this bucket will ever hold */ |
| return APR_EOF; |
| } |
| |
| static apr_uint64_t serf_mmap_get_remaining(serf_bucket_t *bucket) |
| { |
| mmap_context_t *ctx = bucket->data; |
| return ctx->remaining; |
| } |
| |
| const serf_bucket_type_t serf_bucket_type_mmap = { |
| "MMAP", |
| serf_mmap_read, |
| serf_mmap_readline, |
| serf_default_read_iovec, |
| serf_default_read_for_sendfile, |
| serf_buckets_are_v2, |
| serf_mmap_peek, |
| serf_default_destroy_and_data, |
| serf_default_read_bucket, |
| serf_mmap_get_remaining, |
| serf_default_ignore_config, |
| }; |
| |
| #else /* !APR_HAS_MMAP */ |
| |
| serf_bucket_t *serf_bucket_mmap_create(apr_mmap_t *file_mmap, |
| serf_bucket_alloc_t *allocator) |
| { |
| return NULL; |
| } |
| |
| const serf_bucket_type_t serf_bucket_type_mmap = { |
| "MMAP", |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| NULL, |
| }; |
| |
| #endif |