Mercurial > hg > nginx
view src/event/ngx_event_write.c @ 63:36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 26 Feb 2003 20:21:43 +0000 |
parents | e8cdc2989cee |
children |
line wrap: on
line source
#include <ngx_config.h> #include <ngx_core.h> #include <ngx_types.h> #include <ngx_alloc.h> #include <ngx_array.h> #include <ngx_hunk.h> #include <ngx_connection.h> #include <ngx_sendv.h> #include <ngx_sendfile.h> #include <ngx_event_write.h> ngx_chain_t *ngx_event_write(ngx_connection_t *c, ngx_chain_t *in, off_t flush) { int rc, i, last; u_int flags; char *prev; off_t sent; ngx_iovec_t *iov; ngx_array_t *header, *trailer; ngx_hunk_t *file; ngx_chain_t *ch; ch = in; file = NULL; last = 0; ngx_test_null(header, ngx_create_array(c->pool, 10, sizeof(ngx_iovec_t)), (ngx_chain_t *) -1); ngx_test_null(trailer, ngx_create_array(c->pool, 10, sizeof(ngx_iovec_t)), (ngx_chain_t *) -1); do { header->nelts = 0; trailer->nelts = 0; if (ch->hunk->type & NGX_HUNK_IN_MEMORY) { prev = NULL; iov = NULL; while (ch && (ch->hunk->type & NGX_HUNK_IN_MEMORY)) { if (prev == ch->hunk->pos.mem) { iov->ngx_iov_len += ch->hunk->last.mem - ch->hunk->pos.mem; } else { ngx_test_null(iov, ngx_push_array(header), (ngx_chain_t *) -1); iov->ngx_iov_base = ch->hunk->pos.mem; iov->ngx_iov_len = ch->hunk->last.mem - ch->hunk->pos.mem; prev = ch->hunk->last.mem; } if (ch->hunk->type & NGX_HUNK_LAST) { last = 1; } ch = ch->next; } } if (ch && (ch->hunk->type & NGX_HUNK_FILE)) { file = ch->hunk; ch = ch->next; if (ch->hunk->type & NGX_HUNK_LAST) { last = 1; } } #if (HAVE_MAX_SENDFILE_IOVEC) if (file && header->nelts > HAVE_MAX_SENDFILE_IOVEC) { rc = ngx_sendv(c->fd, (ngx_iovec_t *) header->elts, header->nelts, &sent); } else { #endif if (ch && ch->hunk->type & NGX_HUNK_IN_MEMORY) { prev = NULL; iov = NULL; while (ch && (ch->hunk->type & NGX_HUNK_IN_MEMORY)) { if (prev == ch->hunk->pos.mem) { iov->ngx_iov_len += ch->hunk->last.mem - ch->hunk->pos.mem; } else { ngx_test_null(iov, ngx_push_array(trailer), (ngx_chain_t *) -1); iov->ngx_iov_base = ch->hunk->pos.mem; iov->ngx_iov_len = ch->hunk->last.mem - ch->hunk->pos.mem; prev = ch->hunk->last.mem; } if (ch->hunk->type & NGX_HUNK_LAST) { last = 1; } ch = ch->next; } } if (file) { flags = ngx_sendfile_flags; #if (HAVE_SENDFILE_DISCONNECT) if (last && c->close) { flags |= HAVE_SENDFILE_DISCONNECT; } #endif rc = ngx_sendfile(c, (ngx_iovec_t *) header->elts, header->nelts, file->file->fd, file->pos.file, (size_t) (file->last.file - file->pos.file), (ngx_iovec_t *) trailer->elts, trailer->nelts, &sent, flags); #if (HAVE_AIO_EVENT) && !(HAVE_IOCP_EVENT) } else if (ngx_event_flags & NGX_HAVE_AIO_EVENT) { sent = 0; rc = NGX_AGAIN; iov = (ngx_iovec_t *) header->elts; for (i = 0; i < header->nelts; i++) { rc = ngx_event_aio_write(c, iov[i].ngx_iov_base, iov[i].ngx_iov_len); if (rc > 0) { sent += rc; } else { break; } if (rc < (int) iov->ngx_iov_len) { break; } } #endif } else { rc = ngx_sendv(c, (ngx_iovec_t *) header->elts, header->nelts); sent = rc > 0 ? rc: 0; #if (NGX_DEBUG_EVENT_WRITE) ngx_log_debug(c->log, "sendv: " OFF_FMT _ sent); #endif } #if (HAVE_MAX_SENDFILE_IOVEC) } #endif if (rc == NGX_ERROR) return (ngx_chain_t *) NGX_ERROR; c->sent += sent; flush -= sent; for (ch = in; ch; ch = ch->next) { #if (NGX_DEBUG_EVENT_WRITE) ngx_log_debug(c->log, "event write: %x " QX_FMT " " OFF_FMT _ ch->hunk->type _ ch->hunk->pos.file _ ch->hunk->last.file - ch->hunk->pos.file); #endif if (sent >= ch->hunk->last.file - ch->hunk->pos.file) { sent -= ch->hunk->last.file - ch->hunk->pos.file; ch->hunk->pos.file = ch->hunk->last.file; #if (NGX_DEBUG_EVENT_WRITE) ngx_log_debug(c->log, "event write: " QX_FMT " 0 " OFF_FMT _ ch->hunk->pos.file _ sent); #endif /* if (ch->hunk->type & NGX_HUNK_LAST) break; */ continue; } ch->hunk->pos.file += sent; #if (NGX_DEBUG_EVENT_WRITE) ngx_log_debug(c->log, "event write: " QX_FMT " " OFF_FMT _ ch->hunk->pos.file _ ch->hunk->last.file - ch->hunk->pos.file); #endif break; } /* flush hunks if threaded state */ } while (c->write->context && flush > 0); ngx_destroy_array(trailer); ngx_destroy_array(header); return ch; }