Mercurial > projects > ldc
diff tango/tango/sys/linux/epoll.d @ 132:1700239cab2e trunk
[svn r136] MAJOR UNSTABLE UPDATE!!!
Initial commit after moving to Tango instead of Phobos.
Lots of bugfixes...
This build is not suitable for most things.
author | lindquist |
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date | Fri, 11 Jan 2008 17:57:40 +0100 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/tango/tango/sys/linux/epoll.d Fri Jan 11 17:57:40 2008 +0100 @@ -0,0 +1,68 @@ +module tango.sys.linux.epoll; + +version (linux) +{ + // From <sys/epoll.h>: support for the Linux epoll_*() system calls + extern (C) + { + enum: uint + { + EPOLLIN = 0x001, + EPOLLPRI = 0x002, + EPOLLOUT = 0x004, + EPOLLRDNORM = 0x040, + EPOLLRDBAND = 0x080, + EPOLLWRNORM = 0x100, + EPOLLWRBAND = 0x200, + EPOLLMSG = 0x400, + EPOLLERR = 0x008, + EPOLLHUP = 0x010, + EPOLLONESHOT = (1 << 30), + EPOLLET = (1 << 31) + } + + // Valid opcodes ( "op" parameter ) to issue to epoll_ctl(). + public const int EPOLL_CTL_ADD = 1; // Add a file descriptor to the interface. + public const int EPOLL_CTL_DEL = 2; // Remove a file descriptor from the interface. + public const int EPOLL_CTL_MOD = 3; // Change file descriptor epoll_event structure. + + align(1) union epoll_data + { + void* ptr; + int fd; + uint u32; + ulong u64; + } + + alias epoll_data epoll_data_t; + + align(1) struct epoll_event + { + uint events; // Epoll events + epoll_data_t data; // User data variable + } + + // Creates an epoll instance. Returns an fd for the new instance. + // The "size" parameter is a hint specifying the number of file + // descriptors to be associated with the new instance. The fd + // returned by epoll_create() should be closed with close(). + int epoll_create(int size); + + // Manipulate an epoll instance "epfd". Returns 0 in case of success, + // -1 in case of error (the "errno" variable will contain the + // specific error code) The "op" parameter is one of the EPOLL_CTL_* + // constants defined above. The "fd" parameter is the target of the + // operation. The "event" parameter describes which events the caller + // is interested in and any associated user data. + int epoll_ctl(int epfd, int op, int fd, epoll_event* event); + + // Wait for events on an epoll instance "epfd". Returns the number of + // triggered events returned in "events" buffer. Or -1 in case of + // error with the "errno" variable set to the specific error code. The + // "events" parameter is a buffer that will contain triggered + // events. The "maxevents" is the maximum number of events to be + // returned (usually size of "events"). The "timeout" parameter + // specifies the maximum wait time in milliseconds (-1 == infinite). + int epoll_wait(int epfd, epoll_event* events, int maxevents, int timeout); + } +}