003 File Manager
Current Path:
/usr/src/contrib/unbound/util
usr
/
src
/
contrib
/
unbound
/
util
/
📁
..
📄
alloc.c
(18.06 KB)
📄
alloc.h
(8.23 KB)
📄
as112.c
(4.16 KB)
📄
as112.h
(2.22 KB)
📄
config_file.c
(77.33 KB)
📄
config_file.h
(40.38 KB)
📄
configlexer.lex
(26.89 KB)
📄
configparser.y
(101.23 KB)
📄
configyyrename.h
(2.22 KB)
📁
data
📄
edns.c
(5.04 KB)
📄
edns.h
(3.86 KB)
📄
fptr_wlist.c
(19.07 KB)
📄
fptr_wlist.h
(12.78 KB)
📄
iana_ports.inc
(31.81 KB)
📄
locks.c
(7.88 KB)
📄
locks.h
(12.53 KB)
📄
log.c
(16.31 KB)
📄
log.h
(7.5 KB)
📄
mini_event.c
(9.73 KB)
📄
mini_event.h
(6.51 KB)
📄
module.c
(7.14 KB)
📄
module.h
(31.35 KB)
📄
net_help.c
(42.81 KB)
📄
net_help.h
(16.12 KB)
📄
netevent.c
(114.68 KB)
📄
netevent.h
(33.92 KB)
📄
random.c
(6.23 KB)
📄
random.h
(2.98 KB)
📄
rbtree.c
(16.08 KB)
📄
rbtree.h
(6.23 KB)
📄
regional.c
(6.24 KB)
📄
regional.h
(5.37 KB)
📄
rtt.c
(3.53 KB)
📄
rtt.h
(3.57 KB)
📁
shm_side
📁
storage
📄
tcp_conn_limit.c
(4.91 KB)
📄
tcp_conn_limit.h
(3.88 KB)
📄
timehist.c
(6.06 KB)
📄
timehist.h
(3.81 KB)
📄
tube.c
(17.71 KB)
📄
tube.h
(8.4 KB)
📄
ub_event.c
(11.67 KB)
📄
ub_event.h
(5.07 KB)
📄
ub_event_pluggable.c
(17.61 KB)
📄
winsock_event.c
(21.16 KB)
📄
winsock_event.h
(10.19 KB)
Editing: winsock_event.h
/* * util/winsock_event.h - unbound event handling for winsock on windows * * Copyright (c) 2008, NLnet Labs. All rights reserved. * * This software is open source. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * Neither the name of the NLNET LABS nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ /** * \file * * This file contains interface functions with the WinSock2 API on Windows. * It uses the winsock WSAWaitForMultipleEvents interface on a number of * sockets. * * Note that windows can only wait for max 64 events at one time. * * Also, file descriptors cannot be waited for. * * Named pipes are not easily available (and are not usable in select() ). * For interprocess communication, it is possible to wait for a hEvent to * be signaled by another thread. * * When a socket becomes readable, then it will not be flagged as * readable again until you have gotten WOULDBLOCK from a recv routine. * That means the event handler must store the readability (edge notify) * and process the incoming data until it blocks. * The function performing recv then has to inform the event handler that * the socket has blocked, and the event handler can mark it as such. * Thus, this file transforms the edge notify from windows to a level notify * that is compatible with UNIX. * The WSAEventSelect page says that it does do level notify, as long * as you call a recv/write/accept at least once when it is signalled. * This last bit is not true, even though documented in server2008 api docs * from microsoft, it does not happen at all. Instead you have to test for * WSAEWOULDBLOCK on a tcp stream, and only then retest the socket. * And before that remember the previous result as still valid. * * To stay 'fair', instead of emptying a socket completely, the event handler * can test the other (marked as blocking) sockets for new events. * * Additionally, TCP accept sockets get special event support. * * Socket numbers are not starting small, they can be any number (say 33060). * Therefore, bitmaps are not used, but arrays. * * on winsock, you must use recv() and send() for TCP reads and writes, * not read() and write(), those work only on files. * * Also fseek and fseeko do not work if a FILE is not fopen-ed in binary mode. * * When under a high load windows gives out lots of errors, from recvfrom * on udp sockets for example (WSAECONNRESET). Even though the udp socket * has no connection per se. */ #ifndef UTIL_WINSOCK_EVENT_H #define UTIL_WINSOCK_EVENT_H #ifdef USE_WINSOCK #ifndef HAVE_EVENT_BASE_FREE #define HAVE_EVENT_BASE_FREE #endif /* redefine the calls to different names so that there is no name * collision with other code that uses libevent names. (that uses libunbound)*/ #define event_init winsockevent_init #define event_get_version winsockevent_get_version #define event_get_method winsockevent_get_method #define event_base_dispatch winsockevent_base_dispatch #define event_base_loopexit winsockevent_base_loopexit #define event_base_free winsockevent_base_free #define event_set winsockevent_set #define event_base_set winsockevent_base_set #define event_add winsockevent_add #define event_del winsockevent_del #define signal_add winsocksignal_add #define signal_del winsocksignal_del /** event timeout */ #define EV_TIMEOUT 0x01 /** event fd readable */ #define EV_READ 0x02 /** event fd writable */ #define EV_WRITE 0x04 /** event signal */ #define EV_SIGNAL 0x08 /** event must persist */ #define EV_PERSIST 0x10 /* needs our redblack tree */ #include "rbtree.h" /** max number of signals to support */ #define MAX_SIG 32 /** The number of items that the winsock event handler can service. * Windows cannot handle more anyway */ #define WSK_MAX_ITEMS 64 /** * event base for winsock event handler */ struct event_base { /** sorted by timeout (absolute), ptr */ rbtree_type* times; /** array (first part in use) of handles to work on */ struct event** items; /** number of items in use in array */ int max; /** capacity of array, size of array in items */ int cap; /** array of 0 - maxsig of ptr to event for it */ struct event** signals; /** if we need to exit */ int need_to_exit; /** where to store time in seconds */ time_t* time_secs; /** where to store time in microseconds */ struct timeval* time_tv; /** * TCP streams have sticky events to them, these are not * reported by the windows event system anymore, we have to * keep reporting those events as present until wouldblock() is * signalled by the handler back to use. */ int tcp_stickies; /** * should next cycle process reinvigorated stickies, * these are stickies that have been stored, but due to a new * event_add a sudden interest in the event has incepted. */ int tcp_reinvigorated; /** The list of events that is currently being processed. */ WSAEVENT waitfor[WSK_MAX_ITEMS]; }; /** * Event structure. Has some of the event elements. */ struct event { /** node in timeout rbtree */ rbnode_type node; /** is event already added */ int added; /** event base it belongs to */ struct event_base *ev_base; /** fd to poll or -1 for timeouts. signal number for sigs. */ int ev_fd; /** what events this event is interested in, see EV_.. above. */ short ev_events; /** timeout value */ struct timeval ev_timeout; /** callback to call: fd, eventbits, userarg */ void (*ev_callback)(int, short, void *); /** callback user arg */ void *ev_arg; /* ----- nonpublic part, for winsock_event only ----- */ /** index of this event in the items array (if added) */ int idx; /** the event handle to wait for new events to become ready */ WSAEVENT hEvent; /** true if this filedes is a TCP socket and needs special attention */ int is_tcp; /** remembered EV_ values */ short old_events; /** should remembered EV_ values be used for TCP streams. * Reset after WOULDBLOCK is signaled using the function. */ int stick_events; /** true if this event is a signaling WSAEvent by the user. * User created and user closed WSAEvent. Only signaled/unsignaled, * no read/write/distinctions needed. */ int is_signal; /** used during callbacks to see which events were just checked */ int just_checked; }; /** create event base */ void *event_init(time_t* time_secs, struct timeval* time_tv); /** get version */ const char *event_get_version(void); /** get polling method (select,epoll) */ const char *event_get_method(void); /** run select in a loop */ int event_base_dispatch(struct event_base *); /** exit that loop */ int event_base_loopexit(struct event_base *, struct timeval *); /** free event base. Free events yourself */ void event_base_free(struct event_base *); /** set content of event */ void event_set(struct event *, int, short, void (*)(int, short, void *), void *); /** add event to a base. You *must* call this for every event. */ int event_base_set(struct event_base *, struct event *); /** add event to make it active. You may not change it with event_set anymore */ int event_add(struct event *, struct timeval *); /** remove event. You may change it again */ int event_del(struct event *); #define evtimer_add(ev, tv) event_add(ev, tv) #define evtimer_del(ev) event_del(ev) /* uses different implementation. Cannot mix fd/timeouts and signals inside * the same struct event. create several event structs for that. */ /** install signal handler */ int signal_add(struct event *, struct timeval *); /** set signal event contents */ #define signal_set(ev, x, cb, arg) \ event_set(ev, x, EV_SIGNAL|EV_PERSIST, cb, arg) /** remove signal handler */ int signal_del(struct event *); /** compare events in tree, based on timevalue, ptr for uniqueness */ int mini_ev_cmp(const void* a, const void* b); /** * Routine for windows only, where the handling layer can signal that * a TCP stream encountered WSAEWOULDBLOCK for a stream and thus needs * retesting the event. * Pass if EV_READ or EV_WRITE gave wouldblock. */ void winsock_tcp_wouldblock(struct event* ev, int eventbit); /** * Routine for windows only. where you pass a signal WSAEvent that * you wait for. When the event is signaled, the callback gets called. * The callback has to WSAResetEvent to disable the signal. * @param base: the event base. * @param ev: the event structure for data storage * can be passed uninitialised. * @param wsaevent: the WSAEvent that gets signaled. * @param cb: callback routine. * @param arg: user argument to callback routine. * @return false on error. */ int winsock_register_wsaevent(struct event_base* base, struct event* ev, WSAEVENT wsaevent, void (*cb)(int, short, void*), void* arg); /** * Unregister a wsaevent. User has to close the WSAEVENT itself. * @param ev: event data storage. */ void winsock_unregister_wsaevent(struct event* ev); #endif /* USE_WINSOCK */ #endif /* UTIL_WINSOCK_EVENT_H */
Upload File
Create Folder