Mercurial > hg > nginx
view src/os/unix/ngx_readv_chain.c @ 164:84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 29 Oct 2003 08:30:44 +0000 |
parents | fb61ba77beba |
children | 0061d1f0908d |
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#include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain) { char *prev; ssize_t n, size; struct iovec *iov; ngx_err_t err; ngx_array_t io; prev = NULL; iov = NULL; size = 0; ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_ERROR); /* coalesce the neighbouring hunks */ while (chain) { if (prev == chain->hunk->last) { iov->iov_len += chain->hunk->end - chain->hunk->last; } else { ngx_test_null(iov, ngx_push_array(&io), NGX_ERROR); iov->iov_base = chain->hunk->last; iov->iov_len = chain->hunk->end - chain->hunk->last; } size += chain->hunk->end - chain->hunk->last; prev = chain->hunk->end; chain = chain->next; } ngx_log_debug(c->log, "recv: %d:%d" _ io.nelts _ iov->iov_len); n = readv(c->fd, (struct iovec *) io.elts, io.nelts); if (n == 0) { c->read->eof = 1; } else if (n == -1) { c->read->ready = 0; err = ngx_errno; if (err == NGX_EAGAIN) { ngx_log_error(NGX_LOG_INFO, c->log, err, "readv() returned EAGAIN"); return NGX_AGAIN; } c->read->error = 1; ngx_log_error(NGX_LOG_ERR, c->log, err, "readv() failed"); return NGX_ERROR; } else if (n < size) { c->read->ready = 0; } return n; }