2003-04-15 01:04:58 +08:00
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2003-10-07 23:30:05 +08:00
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#include <ngx_config.h>
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#include <ngx_core.h>
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#include <ngx_event.h>
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2003-10-22 00:49:56 +08:00
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#include <ngx_event_pipe.h>
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2003-04-15 01:04:58 +08:00
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2003-10-22 00:49:56 +08:00
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2004-05-28 23:49:23 +08:00
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static ngx_int_t ngx_event_pipe_read_upstream(ngx_event_pipe_t *p);
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static ngx_int_t ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p);
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2003-10-22 00:49:56 +08:00
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2004-05-28 23:49:23 +08:00
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static ngx_int_t ngx_event_pipe_write_chain_to_temp_file(ngx_event_pipe_t *p);
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ngx_inline static void ngx_event_pipe_remove_shadow_links(ngx_buf_t *buf);
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ngx_inline static void ngx_event_pipe_free_shadow_raw_buf(ngx_chain_t **free,
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ngx_buf_t *buf);
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ngx_inline static void ngx_event_pipe_add_free_buf(ngx_chain_t **chain,
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ngx_chain_t *cl);
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static ngx_int_t ngx_event_pipe_drain_chains(ngx_event_pipe_t *p);
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2003-10-17 04:19:16 +08:00
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2003-04-15 01:04:58 +08:00
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2004-05-28 23:49:23 +08:00
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ngx_int_t ngx_event_pipe(ngx_event_pipe_t *p, int do_write)
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2003-10-20 03:57:23 +08:00
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{
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2003-11-21 14:30:49 +08:00
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u_int flags;
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2003-10-29 16:30:44 +08:00
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ngx_event_t *rev, *wev;
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2003-10-20 03:57:23 +08:00
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for ( ;; ) {
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if (do_write) {
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2003-10-22 00:49:56 +08:00
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if (ngx_event_pipe_write_to_downstream(p) == NGX_ABORT) {
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2003-10-20 03:57:23 +08:00
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return NGX_ABORT;
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}
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}
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p->read = 0;
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2003-10-22 15:05:29 +08:00
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p->upstream_blocked = 0;
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2003-10-20 03:57:23 +08:00
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2003-10-22 00:49:56 +08:00
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if (ngx_event_pipe_read_upstream(p) == NGX_ABORT) {
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2003-10-20 03:57:23 +08:00
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return NGX_ABORT;
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}
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2003-10-22 15:05:29 +08:00
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if (!p->read && !p->upstream_blocked) {
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2003-10-20 03:57:23 +08:00
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break;
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}
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do_write = 1;
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}
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2003-11-03 06:56:18 +08:00
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if (p->upstream->fd != -1) {
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rev = p->upstream->read;
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2003-10-29 16:30:44 +08:00
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2003-11-19 00:49:00 +08:00
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flags = (rev->eof || rev->error) ? NGX_CLOSE_EVENT : 0;
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if (ngx_handle_read_event(rev, flags) == NGX_ERROR) {
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2003-11-03 06:56:18 +08:00
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return NGX_ABORT;
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}
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2003-10-20 03:57:23 +08:00
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2003-11-03 06:56:18 +08:00
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if (rev->active) {
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ngx_add_timer(rev, p->read_timeout);
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}
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2003-10-29 16:30:44 +08:00
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}
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2003-11-03 06:56:18 +08:00
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if (p->downstream->fd != -1) {
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wev = p->downstream->write;
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2003-11-19 00:49:00 +08:00
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wev->available = p->send_lowat;
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if (ngx_handle_write_event(wev, NGX_LOWAT_EVENT) == NGX_ERROR) {
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2003-11-03 06:56:18 +08:00
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return NGX_ABORT;
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}
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2003-10-20 03:57:23 +08:00
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2003-11-03 06:56:18 +08:00
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if (wev->active) {
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ngx_add_timer(wev, p->send_timeout);
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}
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2003-10-29 16:30:44 +08:00
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}
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2003-10-20 03:57:23 +08:00
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return NGX_OK;
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}
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2004-05-28 23:49:23 +08:00
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ngx_int_t ngx_event_pipe_read_upstream(ngx_event_pipe_t *p)
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2003-04-15 01:04:58 +08:00
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{
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int n, rc, size;
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2004-05-28 23:49:23 +08:00
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ngx_buf_t *b;
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2003-10-23 00:38:26 +08:00
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ngx_chain_t *chain, *cl, *tl;
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2003-04-15 23:06:52 +08:00
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2003-10-21 15:47:21 +08:00
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if (p->upstream_eof || p->upstream_error || p->upstream_done) {
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return NGX_OK;
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}
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2004-02-12 01:08:49 +08:00
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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"pipe read upstream: %d", p->upstream->read->ready);
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2003-04-15 01:04:58 +08:00
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2003-10-21 15:47:21 +08:00
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for ( ;; ) {
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if (p->upstream_eof || p->upstream_error || p->upstream_done) {
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break;
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}
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2004-05-28 23:49:23 +08:00
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if (p->preread_bufs == NULL && !p->upstream->read->ready) {
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2003-10-21 15:47:21 +08:00
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break;
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}
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2004-05-28 23:49:23 +08:00
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if (p->preread_bufs) {
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2003-10-14 00:32:29 +08:00
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2004-05-28 23:49:23 +08:00
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/* use the pre-read bufs if they exist */
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2003-10-14 00:32:29 +08:00
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2004-05-28 23:49:23 +08:00
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chain = p->preread_bufs;
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p->preread_bufs = NULL;
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2003-04-18 01:59:35 +08:00
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n = p->preread_size;
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2004-02-12 01:08:49 +08:00
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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"pipe preread: %d", n);
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2003-10-14 00:32:29 +08:00
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2004-04-02 13:14:40 +08:00
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if (n) {
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p->read = 1;
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}
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2003-04-18 01:59:35 +08:00
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} else {
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2003-10-14 00:32:29 +08:00
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/*
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* kqueue notifies about the end of file or a pending error.
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2004-05-28 23:49:23 +08:00
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* This test allows not to allocate a buf on these conditions
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2003-10-14 00:32:29 +08:00
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* and not to call ngx_recv_chain().
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*/
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2003-04-22 23:02:58 +08:00
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2003-10-30 16:51:06 +08:00
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if (p->upstream->read->available == 0
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&& (p->upstream->read->kq_eof || p->upstream->read->aio_eof))
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{
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p->upstream->read->ready = 0;
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p->upstream->read->eof = 0;
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p->upstream_eof = 1;
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p->read = 1;
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2003-10-28 23:45:41 +08:00
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2003-10-30 16:51:06 +08:00
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#if (HAVE_KQUEUE)
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2003-10-28 23:45:41 +08:00
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if (p->upstream->read->kq_errno) {
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2003-10-30 16:51:06 +08:00
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p->upstream->read->error = 1;
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p->upstream_error = 1;
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p->upstream_eof = 0;
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2003-10-28 23:45:41 +08:00
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ngx_log_error(NGX_LOG_ERR, p->log,
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p->upstream->read->kq_errno,
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2003-04-22 23:02:58 +08:00
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"readv() failed");
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}
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2003-10-28 23:45:41 +08:00
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#endif
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2003-10-30 16:51:06 +08:00
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break;
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2003-04-22 23:02:58 +08:00
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}
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2003-04-18 01:59:35 +08:00
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2004-05-28 23:49:23 +08:00
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if (p->free_raw_bufs) {
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2003-10-14 00:32:29 +08:00
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2004-05-28 23:49:23 +08:00
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/* use the free bufs if they exist */
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2003-10-14 00:32:29 +08:00
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2004-05-28 23:49:23 +08:00
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chain = p->free_raw_bufs;
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2003-10-30 16:51:06 +08:00
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if (p->single_buf) {
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2004-05-28 23:49:23 +08:00
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p->free_raw_bufs = p->free_raw_bufs->next;
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2003-10-30 16:51:06 +08:00
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chain->next = NULL;
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} else {
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2004-05-28 23:49:23 +08:00
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p->free_raw_bufs = NULL;
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2003-10-30 16:51:06 +08:00
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}
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2003-04-15 01:04:58 +08:00
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2004-05-28 23:49:23 +08:00
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} else if (p->allocated < p->bufs.num) {
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2003-04-15 01:04:58 +08:00
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2004-05-28 23:49:23 +08:00
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/* allocate a new buf if it's still allowed */
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2003-04-15 01:04:58 +08:00
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2004-05-28 23:49:23 +08:00
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if (!(b = ngx_create_temp_buf(p->pool, p->bufs.size))) {
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return NGX_ABORT;
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}
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p->allocated++;
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2003-04-21 22:55:47 +08:00
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2004-05-28 23:49:23 +08:00
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ngx_alloc_link_and_set_buf(tl, b, p->pool, NGX_ABORT);
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2003-10-23 00:38:26 +08:00
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chain = tl;
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2003-04-15 01:04:58 +08:00
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2003-10-14 13:26:00 +08:00
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} else if (!p->cachable && p->downstream->write->ready) {
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2003-04-18 01:59:35 +08:00
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2003-10-14 00:32:29 +08:00
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/*
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2004-05-28 23:49:23 +08:00
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* if the bufs are not needed to be saved in a cache and
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* a downstream is ready then write the bufs to a downstream
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2003-10-14 00:32:29 +08:00
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*/
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2003-10-22 15:05:29 +08:00
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p->upstream_blocked = 1;
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2004-02-12 01:08:49 +08:00
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
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"pipe downstream ready");
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2003-04-18 01:59:35 +08:00
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2003-04-21 22:55:47 +08:00
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break;
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2003-04-18 01:59:35 +08:00
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2003-11-03 06:56:18 +08:00
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} else if (p->cachable
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|| p->temp_file->offset < p->max_temp_file_size)
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{
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2003-10-14 00:32:29 +08:00
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/*
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2004-05-28 23:49:23 +08:00
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* if it's allowed then save some bufs from r->in
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2003-10-22 00:49:56 +08:00
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* to a temporary file, and add them to a r->out chain
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2003-10-14 00:32:29 +08:00
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*/
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2003-10-22 00:49:56 +08:00
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rc = ngx_event_pipe_write_chain_to_temp_file(p);
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2003-04-15 01:04:58 +08:00
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2004-02-12 01:08:49 +08:00
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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"pipe temp offset: %d", p->temp_file->offset);
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2003-04-15 01:04:58 +08:00
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2003-10-14 23:06:38 +08:00
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if (rc == NGX_AGAIN) {
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if (ngx_event_flags & NGX_USE_LEVEL_EVENT
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&& p->upstream->read->active
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&& p->upstream->read->ready)
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{
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if (ngx_del_event(p->upstream->read, NGX_READ_EVENT, 0)
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== NGX_ERROR)
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{
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return NGX_ABORT;
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}
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}
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}
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2003-04-18 01:59:35 +08:00
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if (rc != NGX_OK) {
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return rc;
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}
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2003-04-15 01:04:58 +08:00
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2004-05-28 23:49:23 +08:00
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chain = p->free_raw_bufs;
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2003-10-30 16:51:06 +08:00
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if (p->single_buf) {
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2004-05-28 23:49:23 +08:00
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p->free_raw_bufs = p->free_raw_bufs->next;
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2003-10-30 16:51:06 +08:00
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chain->next = NULL;
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} else {
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2004-05-28 23:49:23 +08:00
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p->free_raw_bufs = NULL;
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2003-10-30 16:51:06 +08:00
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}
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2003-04-15 01:04:58 +08:00
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2003-04-18 01:59:35 +08:00
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} else {
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2003-10-14 00:32:29 +08:00
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2004-05-28 23:49:23 +08:00
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/* if there're no bufs to read in then disable a level event */
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2003-04-21 22:55:47 +08:00
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2004-02-12 01:08:49 +08:00
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
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2004-06-01 14:04:46 +08:00
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"no pipe bufs to read in");
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2003-04-18 01:59:35 +08:00
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break;
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2003-04-15 01:04:58 +08:00
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}
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2003-04-18 01:59:35 +08:00
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n = ngx_recv_chain(p->upstream, chain);
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2003-04-15 01:04:58 +08:00
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2004-02-12 01:08:49 +08:00
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ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
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"pipe recv chain: %d", n);
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2003-04-15 01:04:58 +08:00
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2004-05-28 23:49:23 +08:00
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if (p->free_raw_bufs) {
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chain->next = p->free_raw_bufs;
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2003-10-30 16:51:06 +08:00
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}
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2004-05-28 23:49:23 +08:00
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p->free_raw_bufs = chain;
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2003-10-21 01:14:07 +08:00
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2003-10-14 00:32:29 +08:00
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if (n == NGX_ERROR) {
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p->upstream_error = 1;
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return NGX_ERROR;
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}
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2003-04-15 01:04:58 +08:00
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2003-10-14 00:32:29 +08:00
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if (n == NGX_AGAIN) {
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2003-10-30 16:51:06 +08:00
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if (p->single_buf) {
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2004-05-28 23:49:23 +08:00
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ngx_event_pipe_remove_shadow_links(chain->buf);
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2003-10-30 16:51:06 +08:00
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}
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2003-10-14 00:32:29 +08:00
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break;
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2003-04-15 01:04:58 +08:00
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}
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2003-10-20 03:57:23 +08:00
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p->read = 1;
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2003-10-14 00:32:29 +08:00
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if (n == 0) {
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p->upstream_eof = 1;
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break;
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2003-04-15 23:06:52 +08:00
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}
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2003-04-15 01:04:58 +08:00
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}
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2003-11-06 01:03:41 +08:00
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p->read_length += n;
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2003-10-23 00:38:26 +08:00
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cl = chain;
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2003-10-21 01:14:07 +08:00
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2003-10-23 00:38:26 +08:00
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while (cl && n > 0) {
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2003-10-14 23:06:38 +08:00
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2004-05-28 23:49:23 +08:00
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ngx_event_pipe_remove_shadow_links(cl->buf);
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2003-10-17 04:19:16 +08:00
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2004-05-28 23:49:23 +08:00
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size = cl->buf->end - cl->buf->last;
|
2003-10-14 23:06:38 +08:00
|
|
|
|
|
|
|
if (n >= size) {
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->last = cl->buf->end;
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* STUB */ cl->buf->num = p->num++;
|
2003-10-22 15:05:29 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (p->input_filter(p, cl->buf) == NGX_ERROR) {
|
2003-10-14 23:06:38 +08:00
|
|
|
return NGX_ABORT;
|
|
|
|
}
|
|
|
|
|
|
|
|
n -= size;
|
2003-10-23 00:38:26 +08:00
|
|
|
cl = cl->next;
|
2003-04-15 01:04:58 +08:00
|
|
|
|
|
|
|
} else {
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->last += n;
|
2003-04-15 01:04:58 +08:00
|
|
|
n = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
p->free_raw_bufs = cl;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
#if (NGX_DEBUG)
|
2004-04-02 13:14:40 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (p->in || p->busy || p->free_raw_bufs) {
|
2004-04-02 13:14:40 +08:00
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0, "pipe buf");
|
|
|
|
}
|
|
|
|
|
|
|
|
for (cl = p->in; cl; cl = cl->next) {
|
|
|
|
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe buf in " PTR_FMT ", pos " PTR_FMT ", size: %d",
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->start, cl->buf->pos,
|
|
|
|
cl->buf->last - cl->buf->pos);
|
2004-04-02 13:14:40 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
for (cl = p->busy; cl; cl = cl->next) {
|
|
|
|
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe buf busy " PTR_FMT ", pos " PTR_FMT ", size: %d",
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->start, cl->buf->pos,
|
|
|
|
cl->buf->last - cl->buf->pos);
|
2004-04-02 13:14:40 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
for (cl = p->free_raw_bufs; cl; cl = cl->next) {
|
2004-04-02 13:14:40 +08:00
|
|
|
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe buf free " PTR_FMT ", last " PTR_FMT ", size: %d",
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->start, cl->buf->last,
|
|
|
|
cl->buf->end - cl->buf->last);
|
2004-04-02 13:14:40 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
#endif
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if ((p->upstream_eof || p->upstream_error) && p->free_raw_bufs) {
|
2004-03-19 13:25:53 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* STUB */ p->free_raw_bufs->buf->num = p->num++;
|
2004-03-19 13:25:53 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (p->input_filter(p, p->free_raw_bufs->buf) == NGX_ERROR) {
|
2003-10-17 04:19:16 +08:00
|
|
|
return NGX_ABORT;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
p->free_raw_bufs = p->free_raw_bufs->next;
|
2003-10-30 16:51:06 +08:00
|
|
|
|
2003-10-31 15:10:36 +08:00
|
|
|
if (p->free_bufs) {
|
2004-05-28 23:49:23 +08:00
|
|
|
for (cl = p->free_raw_bufs; cl; cl = cl->next) {
|
|
|
|
ngx_pfree(p->pool, cl->buf->start);
|
2003-10-31 15:10:36 +08:00
|
|
|
}
|
2003-10-30 16:51:06 +08:00
|
|
|
}
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
2003-10-20 03:57:23 +08:00
|
|
|
if (p->cachable && p->in) {
|
2003-10-22 00:49:56 +08:00
|
|
|
if (ngx_event_pipe_write_chain_to_temp_file(p) == NGX_ABORT) {
|
2003-10-10 23:10:50 +08:00
|
|
|
return NGX_ABORT;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2003-10-17 04:19:16 +08:00
|
|
|
return NGX_OK;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_int_t ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p)
|
2003-10-14 13:26:00 +08:00
|
|
|
{
|
2004-04-02 13:14:40 +08:00
|
|
|
size_t bsize;
|
|
|
|
ngx_uint_t flush;
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_buf_t *b;
|
2003-10-23 00:38:26 +08:00
|
|
|
ngx_chain_t *out, **ll, *cl, *tl;
|
2003-10-14 13:26:00 +08:00
|
|
|
|
2004-02-12 01:08:49 +08:00
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe write downstream: %d", p->downstream->write->ready);
|
2003-10-20 03:57:23 +08:00
|
|
|
|
|
|
|
for ( ;; ) {
|
2003-10-21 15:47:21 +08:00
|
|
|
if (p->downstream_error) {
|
2003-10-23 00:38:26 +08:00
|
|
|
return ngx_event_pipe_drain_chains(p);
|
2003-10-21 15:47:21 +08:00
|
|
|
}
|
2003-10-20 03:57:23 +08:00
|
|
|
|
2004-03-19 13:25:53 +08:00
|
|
|
if (p->upstream_eof || p->upstream_error || p->upstream_done) {
|
|
|
|
|
|
|
|
/* pass the p->out and p->in chains to the output filter */
|
|
|
|
|
|
|
|
if (p->out) {
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe write downstream flush out");
|
|
|
|
|
|
|
|
if (p->output_filter(p->output_ctx, p->out) == NGX_ERROR) {
|
|
|
|
p->downstream_error = 1;
|
|
|
|
return ngx_event_pipe_drain_chains(p);
|
|
|
|
}
|
|
|
|
|
|
|
|
p->out = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (p->in) {
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe write downstream flush in");
|
|
|
|
|
|
|
|
if (p->output_filter(p->output_ctx, p->in) == NGX_ERROR) {
|
|
|
|
p->downstream_error = 1;
|
|
|
|
return ngx_event_pipe_drain_chains(p);
|
|
|
|
}
|
|
|
|
|
|
|
|
p->in = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
ngx_log_debug0(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe write downstream done");
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* TODO: free unused bufs */
|
2004-03-19 13:25:53 +08:00
|
|
|
|
2003-10-20 03:57:23 +08:00
|
|
|
p->downstream_done = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!p->downstream->write->ready) {
|
|
|
|
break;
|
|
|
|
}
|
2003-10-14 13:26:00 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* bsize is the size of the busy bufs */
|
2003-10-23 00:38:26 +08:00
|
|
|
|
|
|
|
bsize = 0;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2004-04-02 13:14:40 +08:00
|
|
|
for (cl = p->busy; cl; cl = cl->next) {
|
2004-05-28 23:49:23 +08:00
|
|
|
bsize += cl->buf->end - cl->buf->start;
|
2003-10-21 15:47:21 +08:00
|
|
|
}
|
2004-04-02 13:14:40 +08:00
|
|
|
|
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe write busy: " SIZE_T_FMT, bsize);
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2003-10-22 00:49:56 +08:00
|
|
|
out = NULL;
|
2003-10-23 00:38:26 +08:00
|
|
|
ll = NULL;
|
2004-04-02 13:14:40 +08:00
|
|
|
flush = 0;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2003-10-22 00:49:56 +08:00
|
|
|
for ( ;; ) {
|
|
|
|
if (p->out) {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl = p->out;
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (bsize + ngx_buf_size(cl->buf) > p->busy_size) {
|
2004-04-02 13:14:40 +08:00
|
|
|
flush = 1;
|
2004-03-23 14:01:52 +08:00
|
|
|
break;
|
|
|
|
}
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2003-10-22 00:49:56 +08:00
|
|
|
p->out = p->out->next;
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_event_pipe_free_shadow_raw_buf(&p->free_raw_bufs,
|
|
|
|
cl->buf);
|
2003-10-14 13:26:00 +08:00
|
|
|
|
2003-10-22 00:49:56 +08:00
|
|
|
} else if (!p->cachable && p->in) {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl = p->in;
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (bsize + ngx_buf_size(cl->buf) > p->busy_size) {
|
2004-04-02 13:14:40 +08:00
|
|
|
flush = 1;
|
2004-03-23 14:01:52 +08:00
|
|
|
break;
|
|
|
|
}
|
2003-10-22 00:49:56 +08:00
|
|
|
|
|
|
|
p->in = p->in->next;
|
|
|
|
|
|
|
|
} else {
|
2003-10-14 23:06:38 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
bsize += ngx_buf_size(cl->buf);
|
2003-10-23 00:38:26 +08:00
|
|
|
cl->next = NULL;
|
|
|
|
ngx_chain_add_link(out, ll, cl);
|
2003-10-22 00:49:56 +08:00
|
|
|
}
|
2003-10-14 13:26:00 +08:00
|
|
|
|
2004-04-02 13:14:40 +08:00
|
|
|
ngx_log_debug2(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe write: out:" PTR_FMT ", f:%d", out, flush);
|
2003-10-22 15:05:29 +08:00
|
|
|
|
2004-04-02 13:14:40 +08:00
|
|
|
if (out == NULL && !flush) {
|
|
|
|
break;
|
2003-10-14 13:26:00 +08:00
|
|
|
}
|
|
|
|
|
2003-10-22 00:49:56 +08:00
|
|
|
if (p->output_filter(p->output_ctx, out) == NGX_ERROR) {
|
2003-10-21 01:14:07 +08:00
|
|
|
p->downstream_error = 1;
|
2004-03-19 13:25:53 +08:00
|
|
|
return ngx_event_pipe_drain_chains(p);
|
2003-10-20 03:57:23 +08:00
|
|
|
}
|
|
|
|
|
2003-10-22 15:05:29 +08:00
|
|
|
ngx_chain_update_chains(&p->free, &p->busy, &out, p->tag);
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
for (cl = p->free; cl; cl = cl->next) {
|
2003-10-22 15:05:29 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (cl->buf->temp_file) {
|
2003-11-06 01:03:41 +08:00
|
|
|
if (p->cachable || !p->cyclic_temp_file) {
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* reset p->temp_offset if all bufs had been sent */
|
2003-11-06 01:03:41 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (cl->buf->file_last == p->temp_file->offset) {
|
2003-11-06 01:03:41 +08:00
|
|
|
p->temp_file->offset = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* TODO: free buf if p->free_bufs && upstream done */
|
2003-11-10 04:03:38 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
/* add the free shadow raw buf to p->free_raw_bufs */
|
2003-10-22 15:05:29 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (cl->buf->last_shadow) {
|
|
|
|
b = cl->buf->shadow;
|
|
|
|
b->pos = b->last = b->start;
|
|
|
|
b->shadow = NULL;
|
|
|
|
ngx_alloc_link_and_set_buf(tl, b, p->pool, NGX_ABORT);
|
|
|
|
ngx_event_pipe_add_free_buf(&p->free_raw_bufs, tl);
|
2003-10-14 13:26:00 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->last_shadow = 0;
|
2003-10-14 13:26:00 +08:00
|
|
|
}
|
2003-10-22 15:05:29 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->shadow = NULL;
|
2003-10-14 13:26:00 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return NGX_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
static ngx_int_t ngx_event_pipe_write_chain_to_temp_file(ngx_event_pipe_t *p)
|
2003-04-15 01:04:58 +08:00
|
|
|
{
|
2004-06-18 14:09:25 +08:00
|
|
|
ssize_t size, bsize;
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_buf_t *b;
|
2003-11-18 00:15:03 +08:00
|
|
|
ngx_chain_t *cl, *tl, *next, *out, **ll, **last_free, fl;
|
2003-04-15 01:04:58 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (p->buf_to_file) {
|
|
|
|
fl.buf = p->buf_to_file;
|
2003-11-18 00:15:03 +08:00
|
|
|
fl.next = p->in;
|
|
|
|
out = &fl;
|
2003-04-15 01:04:58 +08:00
|
|
|
|
2003-11-03 06:56:18 +08:00
|
|
|
} else {
|
2003-11-18 00:15:03 +08:00
|
|
|
out = p->in;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
2003-10-17 04:19:16 +08:00
|
|
|
if (!p->cachable) {
|
2003-04-15 01:04:58 +08:00
|
|
|
|
|
|
|
size = 0;
|
2003-11-18 00:15:03 +08:00
|
|
|
cl = out;
|
2003-10-23 00:38:26 +08:00
|
|
|
ll = NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2004-02-12 01:08:49 +08:00
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe offset: %d", p->temp_file->offset);
|
2003-04-15 01:04:58 +08:00
|
|
|
|
|
|
|
do {
|
2004-05-28 23:49:23 +08:00
|
|
|
bsize = cl->buf->last - cl->buf->pos;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2004-04-02 13:14:40 +08:00
|
|
|
ngx_log_debug3(NGX_LOG_DEBUG_EVENT, p->log, 0,
|
|
|
|
"pipe buf " PTR_FMT ", pos " PTR_FMT ", size: %d",
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->start, cl->buf->pos, bsize);
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if ((size + bsize > p->temp_file_write_size)
|
|
|
|
|| (p->temp_file->offset + size + bsize > p->max_temp_file_size))
|
2003-10-21 01:14:07 +08:00
|
|
|
{
|
2003-04-15 01:04:58 +08:00
|
|
|
break;
|
|
|
|
}
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
size += bsize;
|
2003-10-23 00:38:26 +08:00
|
|
|
ll = &cl->next;
|
|
|
|
cl = cl->next;
|
2003-04-15 01:04:58 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
} while (cl);
|
2003-04-15 01:04:58 +08:00
|
|
|
|
2004-02-12 01:08:49 +08:00
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "size: %d", size);
|
2003-10-21 15:47:21 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
if (cl) {
|
|
|
|
p->in = cl;
|
|
|
|
*ll = NULL;
|
2003-10-21 01:14:07 +08:00
|
|
|
|
|
|
|
} else {
|
2003-10-22 00:49:56 +08:00
|
|
|
p->in = NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
p->last_in = &p->in;
|
2003-10-21 01:14:07 +08:00
|
|
|
}
|
2003-04-15 01:04:58 +08:00
|
|
|
|
|
|
|
} else {
|
2003-10-22 00:49:56 +08:00
|
|
|
p->in = NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
p->last_in = &p->in;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
2003-11-03 06:56:18 +08:00
|
|
|
if (ngx_write_chain_to_temp_file(p->temp_file, out) == NGX_ERROR) {
|
2003-10-10 23:10:50 +08:00
|
|
|
return NGX_ABORT;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
for (last_free = &p->free_raw_bufs;
|
2003-10-20 03:57:23 +08:00
|
|
|
*last_free != NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
last_free = &(*last_free)->next)
|
2003-10-20 03:57:23 +08:00
|
|
|
{
|
|
|
|
/* void */
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (p->buf_to_file) {
|
|
|
|
p->temp_file->offset = p->buf_to_file->last - p->buf_to_file->pos;
|
|
|
|
p->buf_to_file = NULL;
|
2003-11-18 00:15:03 +08:00
|
|
|
out = out->next;
|
2003-11-03 06:56:18 +08:00
|
|
|
}
|
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
for (cl = out; cl; cl = next) {
|
|
|
|
next = cl->next;
|
|
|
|
cl->next = NULL;
|
2003-04-15 01:04:58 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
b = cl->buf;
|
|
|
|
b->file = &p->temp_file->file;
|
|
|
|
b->file_pos = p->temp_file->offset;
|
|
|
|
p->temp_file->offset += b->last - b->pos;
|
|
|
|
b->file_last = p->temp_file->offset;
|
2003-11-06 01:03:41 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
b->in_file = 1;
|
|
|
|
b->temp_file = 1;
|
2003-10-22 15:05:29 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
ngx_chain_add_link(p->out, p->last_out, cl);
|
2003-10-20 03:57:23 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (b->last_shadow) {
|
|
|
|
b->shadow->last = b->shadow->pos = b->shadow->start;
|
|
|
|
ngx_alloc_link_and_set_buf(tl, b->shadow, p->pool, NGX_ABORT);
|
2003-10-23 00:38:26 +08:00
|
|
|
*last_free = tl;
|
|
|
|
last_free = &tl->next;
|
2003-04-15 01:04:58 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return NGX_OK;
|
|
|
|
}
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2003-04-21 22:55:47 +08:00
|
|
|
|
2003-04-15 23:06:52 +08:00
|
|
|
/* the copy input filter */
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_int_t ngx_event_pipe_copy_input_filter(ngx_event_pipe_t *p, ngx_buf_t *buf)
|
2003-04-15 23:06:52 +08:00
|
|
|
{
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_buf_t *b;
|
2003-10-23 00:38:26 +08:00
|
|
|
ngx_chain_t *cl;
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (buf->pos == buf->last) {
|
2003-10-14 23:06:38 +08:00
|
|
|
return NGX_OK;
|
|
|
|
}
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2003-10-14 23:06:38 +08:00
|
|
|
if (p->free) {
|
2004-05-28 23:49:23 +08:00
|
|
|
b = p->free->buf;
|
2003-10-14 23:06:38 +08:00
|
|
|
p->free = p->free->next;
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2003-10-14 23:06:38 +08:00
|
|
|
} else {
|
2004-05-28 23:49:23 +08:00
|
|
|
if (!(b = ngx_alloc_buf(p->pool))) {
|
|
|
|
return NGX_ERROR;
|
|
|
|
}
|
2003-10-14 23:06:38 +08:00
|
|
|
}
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_memcpy(b, buf, sizeof(ngx_buf_t));
|
|
|
|
b->shadow = buf;
|
|
|
|
b->tag = p->tag;
|
|
|
|
b->last_shadow = 1;
|
|
|
|
b->recycled = 1;
|
|
|
|
buf->shadow = b;
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_alloc_link_and_set_buf(cl, b, p->pool, NGX_ERROR);
|
2004-02-12 01:08:49 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_log_debug1(NGX_LOG_DEBUG_EVENT, p->log, 0, "buf #%d", b->num);
|
2004-02-12 01:08:49 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
ngx_chain_add_link(p->in, p->last_in, cl);
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2003-10-14 23:06:38 +08:00
|
|
|
return NGX_OK;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_inline static void ngx_event_pipe_remove_shadow_links(ngx_buf_t *buf)
|
2003-10-14 23:06:38 +08:00
|
|
|
{
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_buf_t *b, *next;
|
2003-10-17 04:19:16 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (buf->shadow == NULL) {
|
2003-10-17 04:19:16 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
b = buf->shadow;
|
2003-10-17 04:19:16 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
while (!b->last_shadow) {
|
|
|
|
next = b->shadow;
|
|
|
|
#if 0
|
|
|
|
b->type &= ~(NGX_HUNK_TEMP|NGX_HUNK_IN_MEMORY|NGX_HUNK_RECYCLED);
|
|
|
|
#endif
|
|
|
|
b->temporary = 0;
|
|
|
|
b->recycled = 0;
|
|
|
|
b->shadow = NULL;
|
|
|
|
b = next;
|
2003-10-17 04:19:16 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
#if 0
|
|
|
|
b->type &= ~(NGX_HUNK_TEMP
|
2003-10-17 04:19:16 +08:00
|
|
|
|NGX_HUNK_IN_MEMORY
|
|
|
|
|NGX_HUNK_RECYCLED
|
|
|
|
|NGX_HUNK_LAST_SHADOW);
|
2004-05-28 23:49:23 +08:00
|
|
|
#endif
|
|
|
|
|
|
|
|
b->temporary = 0;
|
|
|
|
b->recycled = 0;
|
|
|
|
b->last_shadow = 0;
|
2003-10-17 04:19:16 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
b->shadow = NULL;
|
|
|
|
|
|
|
|
buf->shadow = NULL;
|
2003-10-14 23:06:38 +08:00
|
|
|
}
|
2003-04-15 23:06:52 +08:00
|
|
|
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_inline static void ngx_event_pipe_free_shadow_raw_buf(ngx_chain_t **free,
|
|
|
|
ngx_buf_t *buf)
|
2003-10-14 23:06:38 +08:00
|
|
|
{
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_buf_t *s;
|
2003-10-23 00:38:26 +08:00
|
|
|
ngx_chain_t *cl, **ll;
|
2003-04-15 23:06:52 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (buf->shadow == NULL) {
|
2003-10-14 23:06:38 +08:00
|
|
|
return;
|
2003-04-15 23:06:52 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
for (s = buf->shadow; !s->last_shadow; s = s->shadow) { /* void */ }
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
ll = free;
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
for (cl = *free ; cl; cl = cl->next) {
|
2004-05-28 23:49:23 +08:00
|
|
|
if (cl->buf == s) {
|
2003-10-23 00:38:26 +08:00
|
|
|
*ll = cl->next;
|
2003-10-14 23:06:38 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if (cl->buf->shadow) {
|
2003-10-14 23:06:38 +08:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
ll = &cl->next;
|
2003-10-14 23:06:38 +08:00
|
|
|
}
|
2003-04-15 23:06:52 +08:00
|
|
|
}
|
|
|
|
|
2003-10-14 23:06:38 +08:00
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_inline static void ngx_event_pipe_add_free_buf(ngx_chain_t **chain,
|
|
|
|
ngx_chain_t *cl)
|
2003-10-14 23:06:38 +08:00
|
|
|
{
|
2003-10-17 04:19:16 +08:00
|
|
|
if (*chain == NULL) {
|
2003-10-23 00:38:26 +08:00
|
|
|
*chain = cl;
|
2003-10-17 04:19:16 +08:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
if ((*chain)->buf->pos != (*chain)->buf->last) {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl->next = (*chain)->next;
|
|
|
|
(*chain)->next = cl;
|
2003-10-14 23:06:38 +08:00
|
|
|
|
|
|
|
} else {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl->next = (*chain);
|
|
|
|
(*chain) = cl;
|
2003-10-14 23:06:38 +08:00
|
|
|
}
|
|
|
|
}
|
2003-10-21 15:47:21 +08:00
|
|
|
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
static ngx_int_t ngx_event_pipe_drain_chains(ngx_event_pipe_t *p)
|
2003-10-21 15:47:21 +08:00
|
|
|
{
|
2004-05-28 23:49:23 +08:00
|
|
|
ngx_buf_t *b;
|
2003-10-23 00:38:26 +08:00
|
|
|
ngx_chain_t *cl, *tl;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
|
|
|
for ( ;; ) {
|
|
|
|
if (p->busy) {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl = p->busy;
|
2003-11-18 16:04:34 +08:00
|
|
|
p->busy = NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
|
|
|
} else if (p->out) {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl = p->out;
|
2003-11-18 16:04:34 +08:00
|
|
|
p->out = NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
|
|
|
} else if (p->in) {
|
2003-10-23 00:38:26 +08:00
|
|
|
cl = p->in;
|
2003-11-18 16:04:34 +08:00
|
|
|
p->in = NULL;
|
2003-10-21 15:47:21 +08:00
|
|
|
|
|
|
|
} else {
|
|
|
|
return NGX_OK;
|
|
|
|
}
|
|
|
|
|
2003-10-23 00:38:26 +08:00
|
|
|
while (cl) {
|
2004-05-28 23:49:23 +08:00
|
|
|
if (cl->buf->last_shadow) {
|
|
|
|
b = cl->buf->shadow;
|
|
|
|
b->pos = b->last = b->start;
|
|
|
|
b->shadow = NULL;
|
|
|
|
ngx_alloc_link_and_set_buf(tl, b, p->pool, NGX_ABORT);
|
|
|
|
ngx_event_pipe_add_free_buf(&p->free_raw_bufs, tl);
|
|
|
|
|
|
|
|
cl->buf->last_shadow = 0;
|
2003-10-21 15:47:21 +08:00
|
|
|
}
|
|
|
|
|
2004-05-28 23:49:23 +08:00
|
|
|
cl->buf->shadow = NULL;
|
2003-10-23 00:38:26 +08:00
|
|
|
tl = cl->next;
|
|
|
|
cl->next = p->free;
|
|
|
|
p->free = cl;
|
|
|
|
cl = tl;
|
2003-10-21 15:47:21 +08:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|