51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
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// socket_epoll.go -- GNU/Linux epoll handling.
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// Copyright 2009 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Support for GNU/Linux epoll.
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// Only for implementing net package.
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// DO NOT USE DIRECTLY.
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package syscall
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// We don't take this type directly from the header file because it
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// uses a union. FIXME.
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type EpollEvent struct {
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Events uint32;
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Fd int32;
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Pad int32;
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};
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func libc_epoll_create(size int) int __asm__ ("epoll_create");
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func libc_epoll_ctl(epfd, op, fd int, event *EpollEvent) int __asm__ ("epoll_ctl");
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func libc_epoll_wait(epfd int, events *EpollEvent, maxevents int,
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timeout int) int __asm__ ("epoll_wait");
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func EpollCreate(size int) (fd int, errno int) {
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fd = libc_epoll_create(int(size));
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if fd < 0 { errno = GetErrno() }
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return;
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}
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func EpollCtl(epfd, op, fd int, ev *EpollEvent) (errno int) {
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r := libc_epoll_ctl(epfd, op, fd, ev);
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if r < 0 { errno = GetErrno() }
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return;
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}
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func EpollWait(epfd int, ev []EpollEvent, msec int) (n int, errno int) {
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var events *EpollEvent;
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var maxevents int;
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if len(ev) > 0 {
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maxevents = len(ev);
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events = &ev[0]
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}
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n = libc_epoll_wait(epfd, events, maxevents, msec);
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if n < 0 { errno = GetErrno() }
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return;
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}
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