Mercurial > hg > nginx-vendor-0-7
view src/os/unix/ngx_solaris_sendfilev_chain.c @ 273:60df8db42ffb
Added tag NGINX_0_5_6 for changeset 29a6403156b0
author | Igor Sysoev <http://sysoev.ru> |
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date | Tue, 09 Jan 2007 00:00:00 +0300 |
parents | 36af50a5582d |
children | 30862655219e |
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/* * Copyright (C) Igor Sysoev */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> #if (NGX_TEST_BUILD_SOLARIS_SENDFILEV) /* Solaris declarations */ typedef struct sendfilevec { int sfv_fd; u_int sfv_flag; off_t sfv_off; size_t sfv_len; } sendfilevec_t; #define SFV_FD_SELF -2 static ssize_t sendfilev(int fd, const struct sendfilevec *vec, int sfvcnt, size_t *xferred) { return -1; } #endif #if (IOV_MAX > 64) #define NGX_SENDFILEVECS 64 #else #define NGX_SENDFILEVECS IOV_MAX #endif ngx_chain_t * ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) { int fd; u_char *prev; off_t size, send, prev_send, aligned, fprev; size_t sent; ssize_t n; ngx_int_t eintr, complete; ngx_err_t err; sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS]; ngx_array_t vec; ngx_event_t *wev; ngx_chain_t *cl; wev = c->write; if (!wev->ready) { return in; } if (!c->sendfile) { return ngx_writev_chain(c, in, limit); } /* the maximum limit size is the maximum size_t value - the page size */ if (limit == 0 || limit > NGX_MAX_SIZE_T_VALUE - ngx_pagesize) { limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; } send = 0; complete = 0; vec.elts = sfvs; vec.size = sizeof(sendfilevec_t); vec.nalloc = NGX_SENDFILEVECS; vec.pool = c->pool; for ( ;; ) { fd = SFV_FD_SELF; prev = NULL; fprev = 0; sfv = NULL; eintr = 0; sent = 0; prev_send = send; vec.nelts = 0; /* create the sendfilevec and coalesce the neighbouring bufs */ for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next) { if (ngx_buf_special(cl->buf)) { continue; } if (ngx_buf_in_memory_only(cl->buf)) { fd = SFV_FD_SELF; size = cl->buf->last - cl->buf->pos; if (send + size > limit) { size = limit - send; } if (prev == cl->buf->pos) { sfv->sfv_len += (size_t) size; } else { sfv = ngx_array_push(&vec); if (sfv == NULL) { return NGX_CHAIN_ERROR; } sfv->sfv_fd = SFV_FD_SELF; sfv->sfv_flag = 0; sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos; sfv->sfv_len = (size_t) size; } prev = cl->buf->pos + (size_t) size; send += size; } else { prev = NULL; size = cl->buf->file_last - cl->buf->file_pos; if (send + size > limit) { size = limit - send; aligned = (cl->buf->file_pos + size + ngx_pagesize - 1) & ~(ngx_pagesize - 1); if (aligned <= cl->buf->file_last) { size = aligned - cl->buf->file_pos; } } if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) { sfv->sfv_len += (size_t) size; } else { sfv = ngx_array_push(&vec); if (sfv == NULL) { return NGX_CHAIN_ERROR; } fd = cl->buf->file->fd; sfv->sfv_fd = fd; sfv->sfv_flag = 0; sfv->sfv_off = cl->buf->file_pos; sfv->sfv_len = (size_t) size; } fprev = cl->buf->file_pos + size; send += size; } } n = sendfilev(c->fd, vec.elts, vec.nelts, &sent); if (n == -1) { err = ngx_errno; if (err == NGX_EAGAIN || err == NGX_EINTR) { if (err == NGX_EINTR) { eintr = 1; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err, "sendfilev() sent only %uz bytes", sent); } else { wev->error = 1; ngx_connection_error(c, err, "sendfilev() failed"); return NGX_CHAIN_ERROR; } } ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, "sendfilev: %z %z", n, sent); if (send - prev_send == (off_t) sent) { complete = 1; } c->sent += sent; for (cl = in; cl; cl = cl->next) { if (ngx_buf_special(cl->buf)) { continue; } if (sent == 0) { break; } size = ngx_buf_size(cl->buf); if ((off_t) sent >= size) { sent = (size_t) ((off_t) sent - size); if (ngx_buf_in_memory(cl->buf)) { cl->buf->pos = cl->buf->last; } if (cl->buf->in_file) { cl->buf->file_pos = cl->buf->file_last; } continue; } if (ngx_buf_in_memory(cl->buf)) { cl->buf->pos += sent; } if (cl->buf->in_file) { cl->buf->file_pos += sent; } break; } if (eintr) { continue; } if (!complete) { wev->ready = 0; return cl; } if (send >= limit || cl == NULL) { return cl; } in = cl; } }