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Comparing libev/ev_port.c (file contents):
Revision 1.29 by root, Thu Feb 18 04:48:05 2016 UTC vs.
Revision 1.34 by root, Sat May 22 20:14:57 2021 UTC

1/* 1/*
2 * libev solaris event port backend 2 * libev solaris event port backend
3 * 3 *
4 * Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de> 4 * Copyright (c) 2007,2008,2009,2010,2011,2019 Marc Alexander Lehmann <libev@schmorp.de>
5 * All rights reserved. 5 * All rights reserved.
6 * 6 *
7 * Redistribution and use in source and binary forms, with or without modifica- 7 * Redistribution and use in source and binary forms, with or without modifica-
8 * tion, are permitted provided that the following conditions are met: 8 * tion, are permitted provided that the following conditions are met:
9 * 9 *
… …
37 * either the BSD or the GPL. 37 * either the BSD or the GPL.
38 */ 38 */
39 39
40/* useful reading: 40/* useful reading:
41 * 41 *
42 * http://bugs.opensolaris.org/view_bug.do?bug_id=6268715 (random results) 42 * https://archive.is/jN6Ck (random results)
43 * http://bugs.opensolaris.org/view_bug.do?bug_id=6455223 (just totally broken) 43 * https://archive.is/bBikp (just totally broken)
44 * http://bugs.opensolaris.org/view_bug.do?bug_id=6873782 (manpage ETIME) 44 * https://archive.is/eJhmu (manpage ETIME)
45 * http://bugs.opensolaris.org/view_bug.do?bug_id=6874410 (implementation ETIME) 45 * https://archive.is/RbgYw (implementation ETIME)
46 * http://www.mail-archive.com/networking-discuss@opensolaris.org/msg11898.html ETIME vs. nget 46 * http://www.mail-archive.com/networking-discuss@opensolaris.org/msg11898.html ETIME vs. nget
47 * http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/event_port.c (libc) 47 * http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/event_port.c (libc)
48 * http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/portfs/port.c#1325 (kernel) 48 * http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/portfs/port.c#1325 (kernel)
49 */ 49 */
50 50
… …
67 0 67 0
68 ) 68 )
69 ) 69 )
70 { 70 {
71 if (errno == EBADFD) 71 if (errno == EBADFD)
72 {
73 assert (("libev: port_associate found invalid fd", errno != EBADFD));
72 fd_kill (EV_A_ fd); 74 fd_kill (EV_A_ fd);
75 }
73 else 76 else
74 ev_syserr ("(libev) port_associate"); 77 ev_syserr ("(libev) port_associate");
75 } 78 }
76} 79}
77 80
… …
108 EV_ACQUIRE_CB; 111 EV_ACQUIRE_CB;
109 112
110 /* port_getn may or may not set nget on error */ 113 /* port_getn may or may not set nget on error */
111 /* so we rely on port_events [0].portev_source not being updated */ 114 /* so we rely on port_events [0].portev_source not being updated */
112 if (res == -1 && errno != ETIME && errno != EINTR) 115 if (res == -1 && errno != ETIME && errno != EINTR)
113 ev_syserr ("(libev) port_getn (see http://bugs.opensolaris.org/view_bug.do?bug_id=6268715, try LIBEV_FLAGS=3 env variable)"); 116 ev_syserr ("(libev) port_getn (see https://archive.is/jN6Ck, try LIBEV_FLAGS=3 env variable)");
114 117
115 for (i = 0; i < nget; ++i) 118 for (i = 0; i < nget; ++i)
116 { 119 {
117 if (port_events [i].portev_source == PORT_SOURCE_FD) 120 if (port_events [i].portev_source == PORT_SOURCE_FD)
118 { 121 {
… …
127 130
128 fd_change (EV_A_ fd, EV__IOFDSET); 131 fd_change (EV_A_ fd, EV__IOFDSET);
129 } 132 }
130 } 133 }
131 134
132 if (expect_false (nget == port_eventmax)) 135 if (ecb_expect_false (nget == port_eventmax))
133 { 136 {
134 ev_free (port_events); 137 ev_free (port_events);
135 port_eventmax = array_nextsize (sizeof (port_event_t), port_eventmax, port_eventmax + 1); 138 port_eventmax = array_nextsize (sizeof (port_event_t), port_eventmax, port_eventmax + 1);
136 port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax); 139 port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);
137 } 140 }
… …
149 152
150 fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */ 153 fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */
151 154
152 /* if my reading of the opensolaris kernel sources are correct, then 155 /* if my reading of the opensolaris kernel sources are correct, then
153 * opensolaris does something very stupid: it checks if the time has already 156 * opensolaris does something very stupid: it checks if the time has already
154 * elapsed and doesn't round up if that is the case,m otherwise it DOES round 157 * elapsed and doesn't round up if that is the case, otherwise it DOES round
155 * up. Since we can't know what the case is, we need to guess by using a 158 * up. Since we can't know what the case is, we need to guess by using a
156 * "large enough" timeout. Normally, 1e-9 would be correct. 159 * "large enough" timeout. Normally, 1e-9 would be correct.
157 */ 160 */
158 backend_mintime = 1e-3; /* needed to compensate for port_getn returning early */ 161 backend_mintime = EV_TS_CONST (1e-3); /* needed to compensate for port_getn returning early */
159 backend_modify = port_modify; 162 backend_modify = port_modify;
160 backend_poll = port_poll; 163 backend_poll = port_poll;
161 164
162 port_eventmax = 64; /* initial number of events receivable per poll */ 165 port_eventmax = 64; /* initial number of events receivable per poll */
163 port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax); 166 port_events = (port_event_t *)ev_malloc (sizeof (port_event_t) * port_eventmax);

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