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|
/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* Inspire is copyright (C) 2002-2005 ChatSpike-Dev.
* E-mail:
* <brain@chatspike.net>
* <Craig@chatspike.net>
*
* Written by Craig Edwards, Craig McLure, and others.
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#ifndef __SOCKETENGINE__
#define __SOCKETENGINE__
#include <vector>
#include <string>
#include "inspircd_config.h"
#include "globals.h"
#include "inspircd.h"
#ifdef USE_EPOLL
#include <sys/epoll.h>
#define EP_DELAY 5
#endif
#ifdef USE_KQUEUE
#include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
#endif
const char X_LISTEN = 0;
const char X_ESTAB_CLIENT = 1;
const char X_ESTAB_MODULE = 2;
const char X_ESTAB_DNS = 3;
const char X_READBIT = 0x80;
class SocketEngine {
std::vector<int> fds;
int EngineHandle;
#ifdef USE_SELECT
fd_set wfdset, rfdset;
#endif
#ifdef USE_KQUEUE
struct kevent ke_list[65535];
struct timespec ts;
#endif
#ifdef USE_EPOLL
struct epoll_event events[65535];
#endif
public:
SocketEngine();
~SocketEngine();
bool AddFd(int fd, bool readable, char type);
bool DelFd(int fd);
bool Wait(std::vector<int> &fdlist);
std::string GetName();
};
// Fill the engine with client file descriptors pending an action
#define epoll_fill int i = epoll_wait(ep, event, 1, 5); \
if (i > 0) \
{ \
log(DEBUG,"epoll_wait call: ep=%d, i=%d",ep,i); \
userrec* cu = fd_ref_table[event[0].data.fd];
#define kqueue_fill ts.tv_sec = 0; \
ts.tv_nsec = 1000L; \
int i = kevent(kq, NULL, 0, &ke, 1, &ts); \
if (i > 0) \
{ \
log(DEBUG,"kevent call: kq=%d, i=%d",kq,i); \
userrec* cu = fd_ref_table[ke.ident];
#define select_fill tval.tv_sec = 0; \
tval.tv_usec = 1000L; \
selectResult2 = select(FD_SETSIZE, &sfd, NULL, NULL, &tval); \
if ((selectResult2 > 0) && (xcount != clientlist.end())) \
for (user_hash::iterator count2a = xcount; count2a != endingiter; count2a++) \
{ \
if (count2a == clientlist.end()) \
break; \
userrec* cu = count2a->second;
#ifdef USE_EPOLL
#define engine_fill epoll_fill
#endif
#ifdef USE_KQUEUE
#define engine_fill kqueue_fill
#endif
#ifdef USE_SELECT
#define engine_fill select_fill
#endif
// how to determine if a socket needs attention if further checks are needed
#define epoll_check ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1))
#define kqueue_check ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1))
#define select_check ((cu->fd != FD_MAGIC_NUMBER) && (cu->fd != -1) && (FD_ISSET (cu->fd, &sfd)))
#ifdef USE_EPOLL
#define engine_check epoll_check
#endif
#ifdef USE_KQUEUE
#define engine_check kqueue_check
#endif
#ifdef USE_SELECT
#define engine_check select_check
#endif
// how to clean up an exiting client
#define epoll_cleanup log(DEBUG,"InspIRCd: Exited: %s",cu->nick); \
kill_link(cu,"Client exited"); \
log(DEBUG,"Bailing from client exit"); \
goto label;
#define kqueue_cleanup log(DEBUG,"InspIRCd: Exited: %s",cu->nick); \
kill_link(cu,"Client exited"); \
log(DEBUG,"Bailing from client exit"); \
goto label;
#define select_cleanup if (count2->second) \
{ \
log(DEBUG,"InspIRCd: Exited: %s",cu->nick); \
kill_link(cu,"Client exited"); \
log(DEBUG,"Bailing from client exit"); \
goto label; \
}
#ifdef USE_EPOLL
#define engine_cleanup epoll_cleanup
#endif
#ifdef USE_KQUEUE
#define engine_cleanup kqueue_cleanup
#endif
#ifdef USE_SELECT
#define engine_cleanup select_cleanup
#endif
// how to scan the set for fd's requiring action
#define select_scanset for (count = 0; count < boundPortCount; count++) \
{ \
FD_SET (openSockfd[count], &selectFds); \
} \
tv.tv_usec = 30000L; \
selectResult = select(MAXSOCKS, &selectFds, NULL, NULL, &tv); \
if (selectResult > 0) \
{ \
for (count = 0; count < boundPortCount; count++) \
{ \
if (FD_ISSET (openSockfd[count], &selectFds)) \
{
#define kqueue_scanset ts.tv_sec = 0; \
ts.tv_nsec = 30000L; \
i = kevent(lkq, NULL, 0, ke_list, 32, &ts); \
if (i > 0) for (j = 0; j < i; j++) \
{ \
log(DEBUG,"kqueue: Listening socket event, i=%d, ke.ident=%d",i,ke_list[j].ident); \
for (count = 0; count < boundPortCount; count++) \
{ \
if ((unsigned)ke_list[j].ident == (unsigned)openSockfd[count]) \
{
#define epoll_scanset i = epoll_wait(lep, event, 32, EP_DELAY); \
if (i > 0) for (j = 0; j < i; j++) \
{ \
log(DEBUG,"epoll: Listening socket event, i=%d,events[j].data.fd=%d",i,event[j].data.fd); \
for (count = 0; count < boundPortCount; count++) \
{ \
if ((unsigned)event[j].data.fd == (unsigned)openSockfd[count]) \
{
#ifdef USE_EPOLL
#define engine_scanset epoll_scanset
#endif
#ifdef USE_KQUEUE
#define engine_scanset kqueue_scanset
#endif
#ifdef USE_SELECT
#define engine_scanset select_scanset
#endif
// a list of variables used specifically by this engine
#define kqueue_structs struct kevent ke; \
struct kevent ke_list[33]; \
struct timespec ts;
#define epoll_structs struct epoll_event event[33];
#define select_structs fd_set sfd;
#ifdef USE_EPOLL
#define engine_structs epoll_structs
#endif
#ifdef USE_KQUEUE
#define engine_structs kqueue_structs
#endif
#ifdef USE_SELECT
#define engine_structs select_structs
#endif
// how to initialise the engine before using it
#define select_init while(0);
#define kqueue_init kq = kqueue(); \
lkq = kqueue(); \
skq = kqueue(); \
if ((kq == -1) || (lkq == -1) || (skq == -1)) \
{ \
log(DEFAULT,"main: kqueue() failed!"); \
printf("ERROR: could not initialise kqueue event system. Shutting down.\n"); \
Exit(ERROR); \
}
#define epoll_init ep = epoll_create(MAXCLIENTS); \
lep = epoll_create(32); \
sep = epoll_create(128); \
if ((ep == -1) || (lep == -1) || (sep == -1)) \
{ \
log(DEFAULT,"main: epoll_create() failed!"); \
printf("ERROR: could not initialise epoll event system. Shutting down.\n"); \
Exit(ERROR); \
}
#ifdef USE_EPOLL
#define engine_init epoll_init
#endif
#ifdef USE_KQUEUE
#define engine_init kqueue_init
#endif
#ifdef USE_SELECT
#define engine_init select_init
#endif
// how to delete a client fd from the engine
#define kqueue_delete_fd struct kevent ke; \
EV_SET(&ke, user->fd, EVFILT_READ, EV_DELETE, 0, 0, NULL); \
int i = kevent(kq, &ke, 1, 0, 0, NULL); \
if (i == -1) \
{ \
log(DEBUG,"kqueue: Failed to remove user from queue!"); \
}
#define epoll_delete_fd struct epoll_event ev; \
ev.events = EPOLLIN | EPOLLET; \
ev.data.fd = user->fd; \
int i = epoll_ctl(ep, EPOLL_CTL_DEL, user->fd, &ev); \
if (i < 0) \
{ \
log(DEBUG,"epoll: List deletion failure!"); \
}
#define select_delete_fd while(0);
#ifdef USE_EPOLL
#define engine_delete_fd epoll_delete_fd
#endif
#ifdef USE_KQUEUE
#define engine_delete_fd kqueue_delete_fd
#endif
#ifdef USE_SELECT
#define engine_delete_fd select_delete_fd
#endif
// how to add a client fd to the engine
#define select_add_fd while(0);
#define epoll_add_fd struct epoll_event ev; \
log(DEBUG,"epoll: Adduser to events, ep=%d socket=%d",ep,socket); \
ev.events = EPOLLIN | EPOLLET; \
ev.data.fd = socket; \
int i = epoll_ctl(ep, EPOLL_CTL_ADD, socket, &ev); \
if (i < 0) \
{ \
log(DEBUG,"epoll: List insertion failure!"); \
}
#define kqueue_add_fd struct kevent ke; \
log(DEBUG,"kqueue: Add user to events, kq=%d socket=%d",kq,socket);\
EV_SET(&ke, socket, EVFILT_READ, EV_ADD, 0, 0, NULL); \
int i = kevent(kq, &ke, 1, 0, 0, NULL); \
if (i == -1) \
{ \
log(DEBUG,"kqueue: List insertion failure!"); \
}
#ifdef USE_EPOLL
#define engine_add_fd epoll_add_fd
#endif
#ifdef USE_KQUEUE
#define engine_add_fd kqueue_add_fd
#endif
#ifdef USE_SELECT
#define engine_add_fd select_add_fd
#endif
#define select_server_fill log(DEFAULT,"Using standard select socket engine.");
#define epoll_server_fill log(DEFAULT,"epoll socket engine is enabled. Filling listen list. boundPortcount=%d",boundPortCount); \
for (count = 0; count < boundPortCount; count++) \
{ \
struct epoll_event ev; \
log(DEBUG,"epoll: Add listening socket to events, ep=%d socket=%d",lep,openSockfd[count]); \
ev.events = EPOLLIN | EPOLLET; \
ev.data.fd = openSockfd[count]; \
int i = epoll_ctl(lep, EPOLL_CTL_ADD, openSockfd[count], &ev); \
if (i < 0) \
{ \
log(DEFAULT,"main: add listen ports, epoll_ctl failed!"); \
printf("ERROR: could not initialise listening sockets in epoll list. Shutting down.\n"); \
Exit(ERROR); \
} \
}
#define kqueue_server_fill log(DEFAULT,"kqueue socket engine is enabled. Filling listen list."); \
for (count = 0; count < boundPortCount; count++) \
{ \
struct kevent ke; \
log(DEBUG,"kqueue: Add listening socket to events, kq=%d socket=%d",lkq,openSockfd[count]); \
EV_SET(&ke, openSockfd[count], EVFILT_READ, EV_ADD, 0, MaxConn, NULL); \
int i = kevent(lkq, &ke, 1, 0, 0, NULL); \
if (i == -1) \
{ \
log(DEFAULT,"main: add listen ports to kqueue failed!"); \
printf("ERROR: could not initialise listening sockets in kqueue. Shutting down.\n"); \
Exit(ERROR); \
} \
}
#ifdef USE_EPOLL
#define engine_server_fill epoll_server_fill
#endif
#ifdef USE_KQUEUE
#define engine_server_fill kqueue_server_fill
#endif
#ifdef USE_SELECT
#define engine_server_fill select_server_fill
#endif
// what is this engine called?
#ifdef USE_KQUEUE
#define engine_name "kqueue"
#endif
#ifdef USE_SELECT
#define engine_name "select"
#endif
#ifdef USE_EPOLL
#define engine_name "epoll"
#endif
#endif
|
