| Igor Sysoev | a877b91 | 2007-12-03 17:19:07 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright (C) Igor Sysoev |
| 4 | */ |
| 5 | |
| 6 | |
| 7 | #include <ngx_config.h> |
| 8 | #include <ngx_core.h> |
| 9 | #include <ngx_event.h> |
| 10 | |
| 11 | |
| 12 | #if (NGX_HAVE_KQUEUE) |
| 13 | |
| 14 | ssize_t |
| 15 | ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) |
| 16 | { |
| 17 | ssize_t n; |
| 18 | ngx_err_t err; |
| 19 | ngx_event_t *rev; |
| 20 | |
| 21 | rev = c->read; |
| 22 | |
| 23 | do { |
| 24 | n = recv(c->fd, buf, size, 0); |
| 25 | |
| 26 | ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 27 | "recv: fd:%d %d of %d", c->fd, n, size); |
| 28 | |
| 29 | if (n >= 0) { |
| 30 | if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { |
| 31 | rev->available -= n; |
| 32 | |
| 33 | /* |
| 34 | * rev->available may be negative here because some additional |
| 35 | * bytes may be received between kevent() and recv() |
| 36 | */ |
| 37 | |
| 38 | if (rev->available <= 0) { |
| 39 | rev->ready = 0; |
| 40 | rev->available = 0; |
| 41 | } |
| 42 | } |
| 43 | |
| 44 | return n; |
| 45 | } |
| 46 | |
| 47 | err = ngx_socket_errno; |
| 48 | |
| 49 | if (err == NGX_EAGAIN || err == NGX_EINTR) { |
| 50 | ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
| 51 | "recv() not ready"); |
| 52 | n = NGX_AGAIN; |
| 53 | |
| 54 | } else { |
| 55 | n = ngx_connection_error(c, err, "recv() failed"); |
| 56 | break; |
| 57 | } |
| 58 | |
| 59 | } while (err == NGX_EINTR); |
| 60 | |
| 61 | rev->ready = 0; |
| 62 | |
| 63 | if (n == NGX_ERROR){ |
| 64 | rev->error = 1; |
| 65 | } |
| 66 | |
| 67 | return n; |
| 68 | } |
| 69 | |
| 70 | #else /* ! NGX_HAVE_KQUEUE */ |
| 71 | |
| 72 | ssize_t |
| 73 | ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) |
| 74 | { |
| 75 | ssize_t n; |
| 76 | ngx_err_t err; |
| 77 | ngx_event_t *rev; |
| 78 | |
| 79 | rev = c->read; |
| 80 | |
| 81 | do { |
| 82 | n = recv(c->fd, buf, size, 0); |
| 83 | |
| 84 | ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, |
| 85 | "recv: fd:%d %d of %d", c->fd, n, size); |
| 86 | |
| 87 | if (n >= 0) { |
| 88 | return n; |
| 89 | } |
| 90 | |
| 91 | err = ngx_socket_errno; |
| 92 | |
| 93 | if (err == NGX_EAGAIN || err == NGX_EINTR) { |
| 94 | ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
| 95 | "recv() not ready"); |
| 96 | n = NGX_AGAIN; |
| 97 | |
| 98 | } else { |
| 99 | n = ngx_connection_error(c, err, "recv() failed"); |
| 100 | break; |
| 101 | } |
| 102 | |
| 103 | } while (err == NGX_EINTR); |
| 104 | |
| 105 | rev->ready = 0; |
| 106 | |
| 107 | if (n == NGX_ERROR){ |
| 108 | rev->error = 1; |
| 109 | } |
| 110 | |
| 111 | return n; |
| 112 | } |
| 113 | |
| 114 | #endif /* NGX_HAVE_KQUEUE */ |