Mercurial > hg > nginx
view src/os/unix/ngx_aio_read.c @ 5914:4dd67e5d958e
Refactored ngx_solaris_sendfilev_chain().
Though ngx_solaris_sendfilev_chain() shouldn't suffer from the problem mentioned
in d1bde5c3c5d2 since currently IOV_MAX on Solaris is 16, but this follows the
change from 3d5717550371 in order to make the code look similar to other systems
and potentially eliminates the problem in the future.
author | Valentin Bartenev <vbart@nginx.com> |
---|---|
date | Wed, 19 Nov 2014 21:17:11 +0300 |
parents | d620f497c50f |
children |
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/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #include <ngx_config.h> #include <ngx_core.h> #include <ngx_event.h> extern int ngx_kqueue; ssize_t ngx_aio_read(ngx_connection_t *c, u_char *buf, size_t size) { int n; ngx_event_t *rev; rev = c->read; if (!rev->ready) { ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second aio post"); return NGX_AGAIN; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "rev->complete: %d", rev->complete); ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio size: %d", size); if (!rev->complete) { ngx_memzero(&rev->aiocb, sizeof(struct aiocb)); rev->aiocb.aio_fildes = c->fd; rev->aiocb.aio_buf = buf; rev->aiocb.aio_nbytes = size; #if (NGX_HAVE_KQUEUE) rev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue; rev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; rev->aiocb.aio_sigevent.sigev_value.sigval_ptr = rev; #endif if (aio_read(&rev->aiocb) == -1) { ngx_log_error(NGX_LOG_CRIT, rev->log, ngx_errno, "aio_read() failed"); rev->error = 1; return NGX_ERROR; } ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_read: #%d OK", c->fd); rev->active = 1; rev->ready = 0; } rev->complete = 0; n = aio_error(&rev->aiocb); if (n == -1) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "aio_error() failed"); rev->error = 1; return NGX_ERROR; } if (n != 0) { if (n == NGX_EINPROGRESS) { if (rev->ready) { ngx_log_error(NGX_LOG_ALERT, c->log, n, "aio_read() still in progress"); rev->ready = 0; } return NGX_AGAIN; } ngx_log_error(NGX_LOG_CRIT, c->log, n, "aio_read() failed"); rev->error = 1; rev->ready = 0; return NGX_ERROR; } n = aio_return(&rev->aiocb); if (n == -1) { ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "aio_return() failed"); rev->error = 1; rev->ready = 0; return NGX_ERROR; } ngx_log_debug2(NGX_LOG_DEBUG_EVENT, rev->log, 0, "aio_read: #%d %d", c->fd, n); if (n == 0) { rev->eof = 1; rev->ready = 0; } else { rev->ready = 1; } rev->active = 0; return n; }