2003-04-10 23:08:54 +08:00
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#include <ngx_config.h>
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#include <ngx_core.h>
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2003-06-11 23:28:34 +08:00
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#include <ngx_event.h>
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2003-04-10 23:08:54 +08:00
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2003-11-18 16:04:34 +08:00
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#if (HAVE_KQUEUE)
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2003-10-23 00:38:26 +08:00
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ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain)
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2003-04-10 23:08:54 +08:00
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{
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2004-03-16 15:10:12 +08:00
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u_char *prev;
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2003-10-29 16:30:44 +08:00
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ssize_t n, size;
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2003-04-12 00:01:14 +08:00
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ngx_err_t err;
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ngx_array_t io;
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2003-11-18 16:04:34 +08:00
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ngx_event_t *rev;
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2004-05-28 23:49:23 +08:00
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struct iovec *iov;
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2003-11-18 16:04:34 +08:00
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rev = c->read;
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if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
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2004-02-12 01:08:49 +08:00
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ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0,
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"readv: eof:%d, avail:%d, err:%d",
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rev->kq_eof, rev->available, rev->kq_errno);
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2003-11-18 16:04:34 +08:00
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if (rev->available == 0) {
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if (rev->kq_eof) {
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rev->ready = 0;
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rev->eof = 1;
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2004-02-12 01:08:49 +08:00
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ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno,
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"kevent() reported about an closed connection");
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2003-11-18 16:04:34 +08:00
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if (rev->kq_errno) {
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rev->error = 1;
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ngx_set_socket_errno(rev->kq_errno);
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2004-02-12 01:08:49 +08:00
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return NGX_ERROR;
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2003-11-18 16:04:34 +08:00
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}
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return 0;
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} else {
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return NGX_AGAIN;
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}
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}
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}
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2003-04-10 23:08:54 +08:00
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2003-10-28 23:45:41 +08:00
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prev = NULL;
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2003-05-15 23:42:53 +08:00
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iov = NULL;
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2003-10-29 16:30:44 +08:00
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size = 0;
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2003-05-15 23:42:53 +08:00
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2003-04-10 23:08:54 +08:00
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ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_ERROR);
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2004-05-28 23:49:23 +08:00
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/* coalesce the neighbouring bufs */
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2003-10-20 03:57:23 +08:00
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2003-10-23 00:38:26 +08:00
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while (chain) {
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2004-05-28 23:49:23 +08:00
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if (prev == chain->buf->last) {
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iov->iov_len += chain->buf->end - chain->buf->last;
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2003-10-28 23:45:41 +08:00
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} else {
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ngx_test_null(iov, ngx_push_array(&io), NGX_ERROR);
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2004-05-28 23:49:23 +08:00
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iov->iov_base = (void *) chain->buf->last;
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iov->iov_len = chain->buf->end - chain->buf->last;
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2003-10-28 23:45:41 +08:00
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}
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2004-05-28 23:49:23 +08:00
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size += chain->buf->end - chain->buf->last;
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prev = chain->buf->end;
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2003-10-23 00:38:26 +08:00
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chain = chain->next;
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2003-04-10 23:08:54 +08:00
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}
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2004-02-12 01:08:49 +08:00
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ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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2004-04-02 00:20:53 +08:00
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"readv: %d, last:%d", io.nelts, iov->iov_len);
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2003-04-15 01:04:58 +08:00
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2003-11-18 16:04:34 +08:00
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rev = c->read;
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2003-04-10 23:08:54 +08:00
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2003-11-18 16:04:34 +08:00
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do {
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n = readv(c->fd, (struct iovec *) io.elts, io.nelts);
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2003-10-28 23:45:41 +08:00
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2003-11-18 16:04:34 +08:00
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if (n >= 0) {
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if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) {
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rev->available -= n;
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2003-04-10 23:08:54 +08:00
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2003-11-18 16:04:34 +08:00
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/*
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* rev->available can be negative here because some additional
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* bytes can be received between kevent() and recv()
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*/
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if (rev->available <= 0) {
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if (!rev->kq_eof) {
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rev->ready = 0;
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}
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if (rev->available < 0) {
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rev->available = 0;
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}
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}
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return n;
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}
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if (n < size) {
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rev->ready = 0;
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}
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if (n == 0) {
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rev->eof = 1;
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}
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return n;
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2003-04-10 23:08:54 +08:00
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}
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2004-02-12 01:08:49 +08:00
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err = ngx_socket_errno;
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if (err == NGX_EAGAIN || err == NGX_EINTR) {
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
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"readv() not ready");
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n = NGX_AGAIN;
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2003-11-18 16:04:34 +08:00
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2004-02-12 01:08:49 +08:00
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} else {
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n = ngx_connection_error(c, err, "readv() failed");
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break;
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}
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2003-11-18 16:04:34 +08:00
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2004-02-12 01:08:49 +08:00
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} while (err == NGX_EINTR);
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2003-11-18 16:04:34 +08:00
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rev->ready = 0;
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if (n == NGX_ERROR){
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2003-10-29 16:30:44 +08:00
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c->read->error = 1;
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2003-11-18 16:04:34 +08:00
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}
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return n;
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}
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#else /* ! NAVE_KQUEUE */
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ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain)
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{
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2004-04-02 23:13:20 +08:00
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u_char *prev;
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2003-11-18 16:04:34 +08:00
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ssize_t n, size;
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ngx_err_t err;
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ngx_array_t io;
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ngx_event_t *rev;
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2004-05-28 23:49:23 +08:00
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struct iovec *iov;
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2003-11-18 16:04:34 +08:00
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prev = NULL;
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iov = NULL;
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size = 0;
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2003-10-29 16:30:44 +08:00
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2003-11-18 16:04:34 +08:00
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ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_ERROR);
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2004-05-28 23:49:23 +08:00
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/* coalesce the neighbouring bufs */
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2003-11-18 16:04:34 +08:00
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while (chain) {
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2004-05-28 23:49:23 +08:00
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if (prev == chain->buf->last) {
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iov->iov_len += chain->buf->end - chain->buf->last;
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2003-11-18 16:04:34 +08:00
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} else {
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ngx_test_null(iov, ngx_push_array(&io), NGX_ERROR);
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2004-05-28 23:49:23 +08:00
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iov->iov_base = chain->buf->last;
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iov->iov_len = chain->buf->end - chain->buf->last;
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2003-11-18 16:04:34 +08:00
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}
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2004-05-28 23:49:23 +08:00
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size += chain->buf->end - chain->buf->last;
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prev = chain->buf->end;
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2003-11-18 16:04:34 +08:00
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chain = chain->next;
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}
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2004-02-12 01:08:49 +08:00
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ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
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"readv: %d:%d", io.nelts, iov->iov_len);
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2003-11-18 16:04:34 +08:00
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rev = c->read;
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do {
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n = readv(c->fd, (struct iovec *) io.elts, io.nelts);
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2004-04-28 14:14:50 +08:00
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if (n == 0) {
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rev->ready = 0;
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rev->eof = 1;
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2003-11-18 16:04:34 +08:00
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2004-04-28 14:14:50 +08:00
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return n;
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} else if (n > 0) {
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if (n < size && !(ngx_event_flags & NGX_HAVE_GREEDY_EVENT)) {
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rev->ready = 0;
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2003-11-18 16:04:34 +08:00
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}
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return n;
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}
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2004-02-12 01:08:49 +08:00
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err = ngx_socket_errno;
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2003-11-18 16:04:34 +08:00
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2004-02-12 01:08:49 +08:00
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if (err == NGX_EAGAIN || err == NGX_EINTR) {
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ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err,
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"readv() not ready");
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n = NGX_AGAIN;
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2003-11-18 16:04:34 +08:00
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2004-02-12 01:08:49 +08:00
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} else {
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n = ngx_connection_error(c, err, "readv() failed");
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break;
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}
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} while (err == NGX_EINTR);
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2003-11-18 16:04:34 +08:00
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rev->ready = 0;
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if (n == NGX_ERROR){
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c->read->error = 1;
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2003-04-10 23:08:54 +08:00
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}
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return n;
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}
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2003-11-18 16:04:34 +08:00
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#endif /* NAVE_KQUEUE */
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