3 * Copyright (C) Igor Sysoev
7 #include <ngx_config.h>
13 #include <ngx_kqueue_module.h>
18 * the ready data requires 3 syscalls:
19 * aio_write(), aio_error(), aio_return()
20 * the non-ready data requires 4 (kqueue) or 5 syscalls:
21 * aio_write(), aio_error(), notifiction, aio_error(), aio_return()
22 * timeout, aio_cancel(), aio_error()
26 ngx_aio_read(ngx_connection_t *c, u_char *buf, size_t size)
34 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second aio post");
38 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
39 "rev->complete: %d", rev->complete);
40 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
41 "aio size: %d", size);
44 ngx_memzero(&rev->aiocb, sizeof(struct aiocb));
46 rev->aiocb.aio_fildes = c->fd;
47 rev->aiocb.aio_buf = buf;
48 rev->aiocb.aio_nbytes = size;
51 rev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue;
52 rev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
53 rev->aiocb.aio_sigevent.sigev_value.sigval_ptr = rev;
56 if (aio_read(&rev->aiocb) == -1) {
57 ngx_log_error(NGX_LOG_CRIT, rev->log, ngx_errno,
63 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
64 "aio_read: #%d OK", c->fd);
72 n = aio_error(&rev->aiocb);
74 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "aio_error() failed");
80 if (n == NGX_EINPROGRESS) {
82 ngx_log_error(NGX_LOG_ALERT, c->log, n,
83 "aio_read() still in progress");
89 ngx_log_error(NGX_LOG_CRIT, c->log, n, "aio_read() failed");
95 n = aio_return(&rev->aiocb);
97 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
98 "aio_return() failed");
105 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, rev->log, 0,
106 "aio_read: #%d %d", c->fd, n);