diff options
Diffstat (limited to 'src/socketengine_epoll.cpp')
-rw-r--r-- | src/socketengine_epoll.cpp | 158 |
1 files changed, 157 insertions, 1 deletions
diff --git a/src/socketengine_epoll.cpp b/src/socketengine_epoll.cpp index 7a7f46d1b..4ed68ca57 100644 --- a/src/socketengine_epoll.cpp +++ b/src/socketengine_epoll.cpp @@ -1 +1,157 @@ -/* +------------------------------------+
* | Inspire Internet Relay Chat Daemon |
* +------------------------------------+
*
* InspIRCd: (C) 2002-2007 InspIRCd Development Team
* See: http://www.inspircd.org/wiki/index.php/Credits
*
* This program is free but copyrighted software; see
* the file COPYING for details.
*
* ---------------------------------------------------
*/
#include "inspircd.h"
#include "exitcodes.h"
#include <sys/epoll.h>
#include "socketengine_epoll.h"
EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance)
{
EngineHandle = epoll_create(MAX_DESCRIPTORS);
if (EngineHandle == -1)
{
ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine: %s", strerror(errno));
ServerInstance->Log(SPARSE,"ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.");
printf("ERROR: Could not initialize socket engine: %s\n", strerror(errno));
printf("ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.\n");
InspIRCd::Exit(EXIT_STATUS_SOCKETENGINE);
}
CurrentSetSize = 0;
}
EPollEngine::~EPollEngine()
{
close(EngineHandle);
}
bool EPollEngine::AddFd(EventHandler* eh)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
return false;
if (GetRemainingFds() <= 1)
return false;
if (ref[fd])
return false;
ref[fd] = eh;
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
ev.data.fd = fd;
int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev);
if (i < 0)
{
return false;
}
ServerInstance->Log(DEBUG,"New file descriptor: %d", fd);
CurrentSetSize++;
return true;
}
void EPollEngine::WantWrite(EventHandler* eh)
{
/** Use oneshot so that the system removes the writeable
* status for us and saves us a call.
*/
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
ev.events = EPOLLOUT;
ev.data.fd = eh->GetFd();
epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev);
}
bool EPollEngine::DelFd(EventHandler* eh, bool force)
{
int fd = eh->GetFd();
if ((fd < 0) || (fd > MAX_DESCRIPTORS))
return false;
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT;
ev.data.fd = fd;
int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev);
if (i < 0 && !force)
return false;
CurrentSetSize--;
ref[fd] = NULL;
ServerInstance->Log(DEBUG,"Remove file descriptor: %d", fd);
return true;
}
int EPollEngine::GetMaxFds()
{
return MAX_DESCRIPTORS;
}
int EPollEngine::GetRemainingFds()
{
return MAX_DESCRIPTORS - CurrentSetSize;
}
int EPollEngine::DispatchEvents()
{
socklen_t codesize;
int errcode;
int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 1000);
for (int j = 0; j < i; j++)
{
if (events[j].events & EPOLLHUP)
{
if (ref[events[j].data.fd])
ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, 0);
continue;
}
if (events[j].events & EPOLLERR)
{
/* Get error number */
if (getsockopt(events[j].data.fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0)
errcode = errno;
if (ref[events[j].data.fd])
ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode);
continue;
}
if (events[j].events & EPOLLOUT)
{
struct epoll_event ev;
memset(&ev,0,sizeof(struct epoll_event));
ev.events = EPOLLIN;
ev.data.fd = events[j].data.fd;
epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev);
if (ref[events[j].data.fd])
ref[events[j].data.fd]->HandleEvent(EVENT_WRITE);
}
else
{
if (ref[events[j].data.fd])
ref[events[j].data.fd]->HandleEvent(EVENT_READ);
}
}
return i;
}
std::string EPollEngine::GetName()
{
return "epoll";
}
\ No newline at end of file +/* +------------------------------------+ + * | Inspire Internet Relay Chat Daemon | + * +------------------------------------+ + * + * InspIRCd: (C) 2002-2007 InspIRCd Development Team + * See: http://www.inspircd.org/wiki/index.php/Credits + * + * This program is free but copyrighted software; see + * the file COPYING for details. + * + * --------------------------------------------------- + */ + +#include "inspircd.h" +#include "exitcodes.h" +#include <sys/epoll.h> +#include "socketengine_epoll.h" + +EPollEngine::EPollEngine(InspIRCd* Instance) : SocketEngine(Instance) +{ + EngineHandle = epoll_create(MAX_DESCRIPTORS); + + if (EngineHandle == -1) + { + ServerInstance->Log(SPARSE,"ERROR: Could not initialize socket engine: %s", strerror(errno)); + ServerInstance->Log(SPARSE,"ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now."); + printf("ERROR: Could not initialize socket engine: %s\n", strerror(errno)); + printf("ERROR: Your kernel probably does not have the proper features. This is a fatal error, exiting now.\n"); + InspIRCd::Exit(EXIT_STATUS_SOCKETENGINE); + } + CurrentSetSize = 0; +} + +EPollEngine::~EPollEngine() +{ + close(EngineHandle); +} + +bool EPollEngine::AddFd(EventHandler* eh) +{ + int fd = eh->GetFd(); + if ((fd < 0) || (fd > MAX_DESCRIPTORS)) + return false; + + if (GetRemainingFds() <= 1) + return false; + + if (ref[fd]) + return false; + + ref[fd] = eh; + struct epoll_event ev; + memset(&ev,0,sizeof(struct epoll_event)); + eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT; + ev.data.fd = fd; + int i = epoll_ctl(EngineHandle, EPOLL_CTL_ADD, fd, &ev); + if (i < 0) + { + return false; + } + + ServerInstance->Log(DEBUG,"New file descriptor: %d", fd); + CurrentSetSize++; + return true; +} + +void EPollEngine::WantWrite(EventHandler* eh) +{ + /** Use oneshot so that the system removes the writeable + * status for us and saves us a call. + */ + struct epoll_event ev; + memset(&ev,0,sizeof(struct epoll_event)); + ev.events = EPOLLOUT; + ev.data.fd = eh->GetFd(); + epoll_ctl(EngineHandle, EPOLL_CTL_MOD, eh->GetFd(), &ev); +} + +bool EPollEngine::DelFd(EventHandler* eh, bool force) +{ + int fd = eh->GetFd(); + if ((fd < 0) || (fd > MAX_DESCRIPTORS)) + return false; + + struct epoll_event ev; + memset(&ev,0,sizeof(struct epoll_event)); + eh->Readable() ? ev.events = EPOLLIN : ev.events = EPOLLOUT; + ev.data.fd = fd; + int i = epoll_ctl(EngineHandle, EPOLL_CTL_DEL, fd, &ev); + + if (i < 0 && !force) + return false; + + CurrentSetSize--; + ref[fd] = NULL; + + ServerInstance->Log(DEBUG,"Remove file descriptor: %d", fd); + return true; +} + +int EPollEngine::GetMaxFds() +{ + return MAX_DESCRIPTORS; +} + +int EPollEngine::GetRemainingFds() +{ + return MAX_DESCRIPTORS - CurrentSetSize; +} + +int EPollEngine::DispatchEvents() +{ + socklen_t codesize; + int errcode; + int i = epoll_wait(EngineHandle, events, MAX_DESCRIPTORS, 1000); + for (int j = 0; j < i; j++) + { + if (events[j].events & EPOLLHUP) + { + if (ref[events[j].data.fd]) + ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, 0); + continue; + } + if (events[j].events & EPOLLERR) + { + /* Get error number */ + if (getsockopt(events[j].data.fd, SOL_SOCKET, SO_ERROR, &errcode, &codesize) < 0) + errcode = errno; + if (ref[events[j].data.fd]) + ref[events[j].data.fd]->HandleEvent(EVENT_ERROR, errcode); + continue; + } + if (events[j].events & EPOLLOUT) + { + struct epoll_event ev; + memset(&ev,0,sizeof(struct epoll_event)); + ev.events = EPOLLIN; + ev.data.fd = events[j].data.fd; + epoll_ctl(EngineHandle, EPOLL_CTL_MOD, events[j].data.fd, &ev); + if (ref[events[j].data.fd]) + ref[events[j].data.fd]->HandleEvent(EVENT_WRITE); + } + else + { + if (ref[events[j].data.fd]) + ref[events[j].data.fd]->HandleEvent(EVENT_READ); + } + } + + return i; +} + +std::string EPollEngine::GetName() +{ + return "epoll"; +} + |