oysteikt/mpd
0
0
Fork 0
Code Issues Pull Requests Releases Activity

EventLoop: new implementation using epoll

Browse Source 
Implement an event loop without GLib.
This commit is contained in:
Max Kellermann
2013-08-07 22:16:59 +02:00
parent 342333f72a
commit c1f4f1fdb6
14 changed files with 716 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
src/event/SocketMonitor.hxx
View File

@@ -22,7 +22,11 @@
#include "check.h"
#ifdef USE_EPOLL
#include <sys/epoll.h>
#else
#include <glib.h>
#endif
#include <type_traits>
@@ -40,29 +44,55 @@
class EventLoop;
class SocketMonitor {
#ifdef USE_EPOLL
#else
struct Source {
GSource base;
SocketMonitor *monitor;
};
#endif
int fd;
EventLoop &loop;
#ifdef USE_EPOLL
/**
* A bit mask of events that is currently registered in the EventLoop.
*/
unsigned scheduled_flags;
#else
Source *source;
GPollFD poll;
#endif
public:
#ifdef USE_EPOLL
static constexpr unsigned READ = EPOLLIN;
static constexpr unsigned WRITE = EPOLLOUT;
static constexpr unsigned ERROR = EPOLLERR;
static constexpr unsigned HANGUP = EPOLLHUP;
#else
static constexpr unsigned READ = G_IO_IN;
static constexpr unsigned WRITE = G_IO_OUT;
static constexpr unsigned ERROR = G_IO_ERR;
static constexpr unsigned HANGUP = G_IO_HUP;
#endif
typedef std::make_signed<size_t>::type ssize_t;
#ifdef USE_EPOLL
SocketMonitor(EventLoop &_loop)
:fd(-1), loop(_loop), scheduled_flags(0) {}
SocketMonitor(int _fd, EventLoop &_loop)
:fd(_fd), loop(_loop), scheduled_flags(0) {}
#else
SocketMonitor(EventLoop &_loop)
:fd(-1), loop(_loop), source(nullptr) {}
SocketMonitor(int _fd, EventLoop &_loop);
#endif
~SocketMonitor();
@@ -93,7 +123,11 @@ public:
unsigned GetScheduledFlags() const {
assert(IsDefined());
#ifdef USE_EPOLL
return scheduled_flags;
#else
return poll.events;
#endif
}
void Schedule(unsigned flags);
@@ -128,6 +162,9 @@ protected:
virtual bool OnSocketReady(unsigned flags) = 0;
public:
#ifdef USE_EPOLL
void Dispatch(unsigned flags);
#else
/* GSource callbacks */
static gboolean Prepare(GSource *source, gint *timeout_r);
static gboolean Check(GSource *source);
@@ -146,6 +183,7 @@ private:
OnSocketReady(poll.revents & poll.events);
}
#endif
};
#endif