| … | |
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| 33 | * version of this file under the BSD license, indicate your decision |
33 | * version of this file under the BSD license, indicate your decision |
| 34 | * by deleting the provisions above and replace them with the notice |
34 | * by deleting the provisions above and replace them with the notice |
| 35 | * and other provisions required by the GPL. If you do not delete the |
35 | * and other provisions required by the GPL. If you do not delete the |
| 36 | * provisions above, a recipient may use your version of this file under |
36 | * provisions above, a recipient may use your version of this file under |
| 37 | * either the BSD or the GPL. |
37 | * either the BSD or the GPL. |
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38 | */ |
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39 | |
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40 | /* useful reading: |
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41 | * |
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42 | * http://bugs.opensolaris.org/view_bug.do?bug_id=6268715 (random results) |
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43 | * http://bugs.opensolaris.org/view_bug.do?bug_id=6455223 (just totally broken) |
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44 | * http://bugs.opensolaris.org/view_bug.do?bug_id=6873782 (manpage ETIME) |
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45 | * http://bugs.opensolaris.org/view_bug.do?bug_id=6874410 (implementation ETIME) |
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46 | * http://www.mail-archive.com/networking-discuss@opensolaris.org/msg11898.html ETIME vs. nget |
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47 | * http://src.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/lib/libc/port/gen/event_port.c (libc) |
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48 | * http://cvs.opensolaris.org/source/xref/onnv/onnv-gate/usr/src/uts/common/fs/portfs/port.c#1325 (kernel) |
| 38 | */ |
49 | */ |
| 39 | |
50 | |
| 40 | #include <sys/types.h> |
51 | #include <sys/types.h> |
| 41 | #include <sys/time.h> |
52 | #include <sys/time.h> |
| 42 | #include <poll.h> |
53 | #include <poll.h> |
| … | |
… | |
| 83 | { |
94 | { |
| 84 | int res, i; |
95 | int res, i; |
| 85 | struct timespec ts; |
96 | struct timespec ts; |
| 86 | uint_t nget = 1; |
97 | uint_t nget = 1; |
| 87 | |
98 | |
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99 | /* we initialise this to something we will skip in the loop, as */ |
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100 | /* port_getn can return with nget unchanged, but no indication */ |
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101 | /* whether it was the original value or has been updated :/ */ |
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102 | port_events [0].portev_source = 0; |
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103 | |
| 88 | EV_RELEASE_CB; |
104 | EV_RELEASE_CB; |
| 89 | EV_TS_SET (ts, timeout); |
105 | EV_TS_SET (ts, timeout); |
| 90 | res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts); |
106 | res = port_getn (backend_fd, port_events, port_eventmax, &nget, &ts); |
| 91 | EV_ACQUIRE_CB; |
107 | EV_ACQUIRE_CB; |
| 92 | |
108 | |
| 93 | if (res == -1) |
109 | /* port_getn may or may not set nget on error */ |
| 94 | { |
110 | /* so we rely on port_events [0].portev_source not being updated */ |
| 95 | if (errno != EINTR && errno != ETIME) |
111 | if (res == -1 && errno != ETIME && errno != EINTR) |
| 96 | ev_syserr ("(libev) port_getn (see http://bugs.opensolaris.org/view_bug.do?bug_id=6268715, try LIBEV_FLAGS=3 env variable)"); |
112 | ev_syserr ("(libev) port_getn (see http://bugs.opensolaris.org/view_bug.do?bug_id=6268715, try LIBEV_FLAGS=3 env variable)"); |
| 97 | |
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| 98 | return; |
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| 99 | } |
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| 100 | |
113 | |
| 101 | for (i = 0; i < nget; ++i) |
114 | for (i = 0; i < nget; ++i) |
| 102 | { |
115 | { |
| 103 | if (port_events [i].portev_source == PORT_SOURCE_FD) |
116 | if (port_events [i].portev_source == PORT_SOURCE_FD) |
| 104 | { |
117 | { |
| … | |
… | |
| 128 | { |
141 | { |
| 129 | /* Initialize the kernel queue */ |
142 | /* Initialize the kernel queue */ |
| 130 | if ((backend_fd = port_create ()) < 0) |
143 | if ((backend_fd = port_create ()) < 0) |
| 131 | return 0; |
144 | return 0; |
| 132 | |
145 | |
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146 | assert (("libev: PORT_SOURCE_FD must not be zero"), PORT_SOURCE_FD); |
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147 | |
| 133 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */ |
148 | fcntl (backend_fd, F_SETFD, FD_CLOEXEC); /* not sure if necessary, hopefully doesn't hurt */ |
| 134 | |
149 | |
| 135 | backend_fudge = 1e-3; /* needed to compensate for port_getn returning early */ |
150 | backend_fudge = 1e-3; /* needed to compensate for port_getn returning early */ |
| 136 | backend_modify = port_modify; |
151 | backend_modify = port_modify; |
| 137 | backend_poll = port_poll; |
152 | backend_poll = port_poll; |
