diff options
Diffstat (limited to 'app/nginx/src/os/unix/ngx_solaris_sendfilev_chain.c')
| -rw-r--r-- | app/nginx/src/os/unix/ngx_solaris_sendfilev_chain.c | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/app/nginx/src/os/unix/ngx_solaris_sendfilev_chain.c b/app/nginx/src/os/unix/ngx_solaris_sendfilev_chain.c new file mode 100644 index 0000000..39bcafa --- /dev/null +++ b/app/nginx/src/os/unix/ngx_solaris_sendfilev_chain.c @@ -0,0 +1,228 @@ + +/* + * Copyright (C) Igor Sysoev + * Copyright (C) Nginx, Inc. + */ + + +#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; +} + +ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in, + off_t limit); + +#endif + + +#define NGX_SENDFILEVECS NGX_IOVS_PREALLOCATE + + +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; + ngx_err_t err; + ngx_buf_t *file; + ngx_uint_t nsfv; + sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS]; + 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 > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) { + limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; + } + + + send = 0; + + for ( ;; ) { + fd = SFV_FD_SELF; + prev = NULL; + fprev = 0; + file = NULL; + sfv = NULL; + eintr = 0; + sent = 0; + prev_send = send; + + nsfv = 0; + + /* create the sendfilevec and coalesce the neighbouring bufs */ + + for (cl = in; cl && 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 { + if (nsfv == NGX_SENDFILEVECS) { + break; + } + + sfv = &sfvs[nsfv++]; + + 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) + & ~((off_t) 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 { + if (nsfv == NGX_SENDFILEVECS) { + break; + } + + sfv = &sfvs[nsfv++]; + + 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; + } + + file = cl->buf; + fprev = cl->buf->file_pos + size; + send += size; + } + } + + n = sendfilev(c->fd, sfvs, nsfv, &sent); + + if (n == -1) { + err = ngx_errno; + + switch (err) { + case NGX_EAGAIN: + break; + + case NGX_EINTR: + eintr = 1; + break; + + default: + wev->error = 1; + ngx_connection_error(c, err, "sendfilev() failed"); + return NGX_CHAIN_ERROR; + } + + ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err, + "sendfilev() sent only %uz bytes", sent); + + } else if (n == 0 && sent == 0) { + + /* + * sendfilev() is documented to return -1 with errno + * set to EINVAL if svf_len is greater than the file size, + * but at least Solaris 11 returns 0 instead + */ + + if (file) { + ngx_log_error(NGX_LOG_ALERT, c->log, 0, + "sendfilev() reported that \"%s\" was truncated at %O", + file->file->name.data, file->file_pos); + + } else { + ngx_log_error(NGX_LOG_ALERT, c->log, 0, + "sendfilev() returned 0 with memory buffers"); + } + + return NGX_CHAIN_ERROR; + } + + ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, + "sendfilev: %z %z", n, sent); + + c->sent += sent; + + in = ngx_chain_update_sent(in, sent); + + if (eintr) { + send = prev_send + sent; + continue; + } + + if (send - prev_send != (off_t) sent) { + wev->ready = 0; + return in; + } + + if (send >= limit || in == NULL) { + return in; + } + } +} |