1 /** 2 * D header file for FreeBSD. 3 * 4 * Copyright: Copyright Martin Nowak 2012. 5 * License: $(HTTP www.boost.org/LICENSE_1_0.txt, Boost License 1.0). 6 * Authors: Martin Nowak 7 */ 8 9 /* Copyright Martin Nowak 2012. 10 * Distributed under the Boost Software License, Version 1.0. 11 * (See accompanying file LICENSE or copy at 12 * http://www.boost.org/LICENSE_1_0.txt) 13 */ 14 module core.sys.freebsd.sys.event; 15 16 version (FreeBSD): 17 extern (C): 18 nothrow: 19 @nogc: 20 21 import core.sys.freebsd.config; 22 import core.stdc.stdint; // intptr_t, uintptr_t 23 import core.sys.posix.time; // timespec 24 25 enum 26 { 27 EVFILT_READ = -1, 28 EVFILT_WRITE = -2, 29 EVFILT_AIO = -3, /* attached to aio requests */ 30 EVFILT_VNODE = -4, /* attached to vnodes */ 31 EVFILT_PROC = -5, /* attached to struct proc */ 32 EVFILT_SIGNAL = -6, /* attached to struct proc */ 33 EVFILT_TIMER = -7, /* timers */ 34 EVFILT_PROCDESC = -8, /* attached to process descriptors */ 35 EVFILT_FS = -9, /* filesystem events */ 36 EVFILT_LIO = -10, /* attached to lio requests */ 37 EVFILT_USER = -11, /* User events */ 38 EVFILT_SENDFILE = -12, /* attached to sendfile requests */ 39 EVFILT_SYSCOUNT = 11, 40 } 41 42 static if (__FreeBSD_version >= 1200000) 43 { 44 struct kevent_t 45 { 46 uintptr_t ident; 47 short filter; 48 ushort flags; 49 uint fflags; 50 long data; 51 void* udata; 52 ulong[4] ext; 53 } 54 } 55 else 56 { 57 struct kevent_t 58 { 59 uintptr_t ident; /* identifier for this event */ 60 short filter; /* filter for event */ 61 ushort flags; 62 uint fflags; 63 intptr_t data; 64 void *udata; /* opaque user data identifier */ 65 } 66 } 67 68 extern(D) void EV_SET(kevent_t* kevp, typeof(kevent_t.tupleof) args) 69 { 70 *kevp = kevent_t(args); 71 } 72 73 enum 74 { 75 /* actions */ 76 EV_ADD = 0x0001, /* add event to kq (implies enable) */ 77 EV_DELETE = 0x0002, /* delete event from kq */ 78 EV_ENABLE = 0x0004, /* enable event */ 79 EV_DISABLE = 0x0008, /* disable event (not reported) */ 80 EV_FORCEONESHOT = 0x0100, /* enable _ONESHOT and force trigger */ 81 82 /* flags */ 83 EV_ONESHOT = 0x0010, /* only report one occurrence */ 84 EV_CLEAR = 0x0020, /* clear event state after reporting */ 85 EV_RECEIPT = 0x0040, /* force EV_ERROR on success, data=0 */ 86 EV_DISPATCH = 0x0080, /* disable event after reporting */ 87 88 EV_SYSFLAGS = 0xF000, /* reserved by system */ 89 EV_DROP = 0x1000, /* note should be dropped */ 90 EV_FLAG1 = 0x2000, /* filter-specific flag */ 91 EV_FLAG2 = 0x4000, /* filter-specific flag */ 92 93 /* returned values */ 94 EV_EOF = 0x8000, /* EOF detected */ 95 EV_ERROR = 0x4000, /* error, data contains errno */ 96 } 97 98 enum 99 { 100 /* 101 * data/hint flags/masks for EVFILT_USER, shared with userspace 102 * 103 * On input, the top two bits of fflags specifies how the lower twenty four 104 * bits should be applied to the stored value of fflags. 105 * 106 * On output, the top two bits will always be set to NOTE_FFNOP and the 107 * remaining twenty four bits will contain the stored fflags value. 108 */ 109 NOTE_FFNOP = 0x00000000, /* ignore input fflags */ 110 NOTE_FFAND = 0x40000000, /* AND fflags */ 111 NOTE_FFOR = 0x80000000, /* OR fflags */ 112 NOTE_FFCOPY = 0xc0000000, /* copy fflags */ 113 NOTE_FFCTRLMASK = 0xc0000000, /* masks for operations */ 114 NOTE_FFLAGSMASK = 0x00ffffff, 115 116 NOTE_TRIGGER = 0x01000000, /* Cause the event to be 117 triggered for output. */ 118 119 /* 120 * data/hint flags for EVFILT_{READ|WRITE}, shared with userspace 121 */ 122 NOTE_LOWAT = 0x0001, /* low water mark */ 123 NOTE_FILE_POLL = 0x0002, /* behave like poll() */ 124 125 /* 126 * data/hint flags for EVFILT_VNODE, shared with userspace 127 */ 128 NOTE_DELETE = 0x0001, /* vnode was removed */ 129 NOTE_WRITE = 0x0002, /* data contents changed */ 130 NOTE_EXTEND = 0x0004, /* size increased */ 131 NOTE_ATTRIB = 0x0008, /* attributes changed */ 132 NOTE_LINK = 0x0010, /* link count changed */ 133 NOTE_RENAME = 0x0020, /* vnode was renamed */ 134 NOTE_REVOKE = 0x0040, /* vnode access was revoked */ 135 NOTE_OPEN = 0x0080, /* vnode was opened */ 136 NOTE_CLOSE = 0x0100, /* file closed, fd did not 137 allowed write */ 138 NOTE_CLOSE_WRITE = 0x0200, /* file closed, fd did allowed 139 write */ 140 NOTE_READ = 0x0400, /* file was read */ 141 142 /* 143 * data/hint flags for EVFILT_PROC and EVFILT_PROCDESC, shared with userspace 144 */ 145 NOTE_EXIT = 0x80000000, /* process exited */ 146 NOTE_FORK = 0x40000000, /* process forked */ 147 NOTE_EXEC = 0x20000000, /* process exec'd */ 148 NOTE_PCTRLMASK = 0xf0000000, /* mask for hint bits */ 149 NOTE_PDATAMASK = 0x000fffff, /* mask for pid */ 150 151 /* additional flags for EVFILT_PROC */ 152 NOTE_TRACK = 0x00000001, /* follow across forks */ 153 NOTE_TRACKERR = 0x00000002, /* could not track child */ 154 NOTE_CHILD = 0x00000004, /* am a child process */ 155 156 /* additional flags for EVFILT_TIMER */ 157 NOTE_SECONDS = 0x00000001, /* data is seconds */ 158 NOTE_MSECONDS = 0x00000002, /* data is milliseconds */ 159 NOTE_USECONDS = 0x00000004, /* data is microseconds */ 160 NOTE_NSECONDS = 0x00000008, /* data is nanoseconds */ 161 } 162 163 int kqueue(); 164 165 version (GNU) 166 { 167 int kevent(int kq, const kevent_t *changelist, int nchanges, 168 kevent_t *eventlist, int nevents, 169 const timespec *timeout); 170 } 171 else 172 { 173 static if (__FreeBSD_version >= 1200000) 174 pragma(mangle, "kevent@@FBSD_1.5") 175 int kevent(int kq, const kevent_t *changelist, int nchanges, 176 kevent_t *eventlist, int nevents, 177 const timespec *timeout); 178 else 179 pragma(mangle, "kevent@FBSD_1.0") 180 int kevent(int kq, const kevent_t *changelist, int nchanges, 181 kevent_t *eventlist, int nevents, 182 const timespec *timeout); 183 } 184