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5440a7562b
mod_http2: move stuff from master connection to worker threads, increase spare slave connections, create output beams in worker when needed. git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/trunk@1789535 13f79535-47bb-0310-9956-ffa450edef68
127 lines
4.1 KiB
C
127 lines
4.1 KiB
C
/* Copyright 2015 greenbytes GmbH (https://www.greenbytes.de)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __mod_h2__h2_task__
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#define __mod_h2__h2_task__
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#include <http_core.h>
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/**
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* A h2_task fakes a HTTP/1.1 request from the data in a HTTP/2 stream
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* (HEADER+CONT.+DATA) the module recieves.
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*
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* In order to answer a HTTP/2 stream, we want all Apache httpd infrastructure
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* to be involved as usual, as if this stream can as a separate HTTP/1.1
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* request. The basic trickery to do so was derived from google's mod_spdy
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* source. Basically, we fake a new conn_rec object, even with its own
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* socket and give it to ap_process_connection().
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*
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* Since h2_task instances are executed in separate threads, we may have
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* different lifetimes than our h2_stream or h2_session instances. Basically,
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* we would like to be as standalone as possible.
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*
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* Finally, to keep certain connection level filters, such as ourselves and
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* especially mod_ssl ones, from messing with our data, we need a filter
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* of our own to disble those.
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*/
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struct h2_bucket_beam;
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struct h2_conn;
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struct h2_mplx;
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struct h2_task;
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struct h2_req_engine;
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struct h2_request;
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struct h2_response_parser;
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struct h2_stream;
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struct h2_worker;
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typedef struct h2_task h2_task;
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struct h2_task {
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const char *id;
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int stream_id;
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conn_rec *c;
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apr_pool_t *pool;
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const struct h2_request *request;
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apr_interval_time_t timeout;
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int rst_error; /* h2 related stream abort error */
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struct {
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struct h2_bucket_beam *beam;
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unsigned int eos : 1;
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apr_bucket_brigade *bb;
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apr_bucket_brigade *bbchunk;
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apr_off_t chunked_total;
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} input;
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struct {
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struct h2_bucket_beam *beam;
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unsigned int opened : 1;
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unsigned int sent_response : 1;
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unsigned int copy_files : 1;
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struct h2_response_parser *rparser;
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apr_bucket_brigade *bb;
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apr_size_t max_buffer;
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} output;
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struct h2_mplx *mplx;
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unsigned int filters_set : 1;
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unsigned int frozen : 1;
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unsigned int thawed : 1;
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unsigned int worker_started : 1; /* h2_worker started processing */
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unsigned int worker_done : 1; /* h2_worker finished */
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apr_time_t started_at; /* when processing started */
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apr_time_t done_at; /* when processing was done */
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apr_bucket *eor;
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struct h2_req_engine *engine; /* engine hosted by this task */
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struct h2_req_engine *assigned; /* engine that task has been assigned to */
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};
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h2_task *h2_task_create(conn_rec *slave, int stream_id,
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const h2_request *req, struct h2_mplx *m,
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struct h2_bucket_beam *input,
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apr_interval_time_t timeout,
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apr_size_t output_max_mem);
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void h2_task_destroy(h2_task *task);
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apr_status_t h2_task_do(h2_task *task, apr_thread_t *thread, int worker_id);
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void h2_task_redo(h2_task *task);
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int h2_task_can_redo(h2_task *task);
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/**
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* Reset the task with the given error code, resets all input/output.
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*/
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void h2_task_rst(h2_task *task, int error);
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void h2_task_register_hooks(void);
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/*
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* One time, post config intialization.
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*/
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apr_status_t h2_task_init(apr_pool_t *pool, server_rec *s);
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extern APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_in) *h2_task_logio_add_bytes_in;
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extern APR_OPTIONAL_FN_TYPE(ap_logio_add_bytes_out) *h2_task_logio_add_bytes_out;
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apr_status_t h2_task_freeze(h2_task *task);
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apr_status_t h2_task_thaw(h2_task *task);
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int h2_task_has_thawed(h2_task *task);
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#endif /* defined(__mod_h2__h2_task__) */
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