1 /** 2 * D header file for DragonFlyBSD. 3 * 4 * Copyright: Copyright Martin Nowak 2012. 5 * License: $(WEB www.boost.org/LICENSE_1_0.txt, Boost License 1.0). 6 * Authors: Martin Nowak,Diederik de Groot(port:DragonFlyBSD) 7 * Copied: From core/sys/freebsd/sys 8 */ 9 module core.sys.dragonflybsd.sys.event; 10 11 version (DragonFlyBSD): 12 13 extern (C) nothrow @nogc @system: 14 15 import core.stdc.stdint; // intptr_t, uintptr_t 16 import core.sys.posix.time; // timespec 17 18 enum 19 { 20 EVFILT_READ = -1, 21 EVFILT_WRITE = -2, 22 EVFILT_AIO = -3, /* attached to aio requests */ 23 EVFILT_VNODE = -4, /* attached to vnodes */ 24 EVFILT_PROC = -5, /* attached to struct proc */ 25 EVFILT_SIGNAL = -6, /* attached to struct proc */ 26 EVFILT_TIMER = -7, /* timers */ 27 EVFILT_EXCEPT = -8, /* exceptional conditions */ 28 EVFILT_USER = -9, /* user events */ 29 EVFILT_FS = -10, /* filesystem events */ 30 EVFILT_MARKER = 0xF, /* placemarker for tailq */ 31 EVFILT_SYSCOUNT = 10, 32 } 33 34 extern(D) void EV_SET(kevent_t* kevp, typeof(kevent_t.tupleof) args) 35 { 36 *kevp = kevent_t(args); 37 } 38 39 struct kevent_t 40 { 41 uintptr_t ident; /* identifier for this event */ 42 short filter; /* filter for event */ 43 ushort flags; 44 uint fflags; 45 intptr_t data; 46 void *udata; /* opaque user data identifier */ 47 } 48 49 enum 50 { 51 /* actions */ 52 EV_ADD = 0x0001, /* add event to kq (implies enable) */ 53 EV_DELETE = 0x0002, /* delete event from kq */ 54 EV_ENABLE = 0x0004, /* enable event */ 55 EV_DISABLE = 0x0008, /* disable event (not reported) */ 56 57 /* flags */ 58 EV_ONESHOT = 0x0010, /* only report one occurrence */ 59 EV_CLEAR = 0x0020, /* clear event state after reporting */ 60 EV_RECEIPT = 0x0040, /* force EV_ERROR on success, data=0 */ 61 EV_DISPATCH = 0x0080, /* disable event after reporting */ 62 63 EV_SYSFLAGS = 0xF000, /* reserved by system */ 64 EV_FLAG1 = 0x2000, /* filter-specific flag */ 65 66 /* returned values */ 67 EV_EOF = 0x8000, /* EOF detected */ 68 EV_ERROR = 0x4000, /* error, data contains errno */ 69 EV_NODATA = 0x1000, /* EOF and no more data */ 70 } 71 72 enum 73 { 74 /* 75 * data/hint flags/masks for EVFILT_USER, shared with userspace 76 * 77 * On input, the top two bits of fflags specifies how the lower twenty four 78 * bits should be applied to the stored value of fflags. 79 * 80 * On output, the top two bits will always be set to NOTE_FFNOP and the 81 * remaining twenty four bits will contain the stored fflags value. 82 */ 83 NOTE_FFNOP = 0x00000000, /* ignore input fflags */ 84 NOTE_FFAND = 0x40000000, /* AND fflags */ 85 NOTE_FFOR = 0x80000000, /* OR fflags */ 86 NOTE_FFCOPY = 0xc0000000, /* copy fflags */ 87 NOTE_FFCTRLMASK = 0xc0000000, /* masks for operations */ 88 NOTE_FFLAGSMASK = 0x00ffffff, 89 90 NOTE_TRIGGER = 0x01000000, /* Cause the event to be 91 triggered for output. */ 92 93 /* 94 * data/hint flags for EVFILT_{READ|WRITE}, shared with userspace 95 */ 96 NOTE_LOWAT = 0x0001, /* low water mark */ 97 NOTE_OOB = 0x0002, /* OOB data on a socket */ 98 99 /* 100 * data/hint flags for EVFILT_VNODE, shared with userspace 101 */ 102 NOTE_DELETE = 0x0001, /* vnode was removed */ 103 NOTE_WRITE = 0x0002, /* data contents changed */ 104 NOTE_EXTEND = 0x0004, /* size increased */ 105 NOTE_ATTRIB = 0x0008, /* attributes changed */ 106 NOTE_LINK = 0x0010, /* link count changed */ 107 NOTE_RENAME = 0x0020, /* vnode was renamed */ 108 NOTE_REVOKE = 0x0040, /* vnode access was revoked */ 109 110 NOTE_EXIT = 0x80000000, /* process exited */ 111 NOTE_FORK = 0x40000000, /* process forked */ 112 NOTE_EXEC = 0x20000000, /* process exec'd */ 113 NOTE_PCTRLMASK = 0xf0000000, /* mask for hint bits */ 114 NOTE_PDATAMASK = 0x000fffff, /* mask for pid */ 115 116 /* additional flags for EVFILT_PROC */ 117 NOTE_TRACK = 0x00000001, /* follow across forks */ 118 NOTE_TRACKERR = 0x00000002, /* could not track child */ 119 NOTE_CHILD = 0x00000004, /* am a child process */ 120 } 121 122 int kqueue(); 123 int kevent(int kq, const kevent_t *changelist, int nchanges, 124 int nevents, const timespec *timeout); 125