893N/A/*
2362N/A * Copyright (c) 2008, 2009, Oracle and/or its affiliates. All rights reserved.
893N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
893N/A *
893N/A * This code is free software; you can redistribute it and/or modify it
893N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
893N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
893N/A *
893N/A * This code is distributed in the hope that it will be useful, but WITHOUT
893N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
893N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
893N/A * version 2 for more details (a copy is included in the LICENSE file that
893N/A * accompanied this code).
893N/A *
893N/A * You should have received a copy of the GNU General Public License version
893N/A * 2 along with this work; if not, write to the Free Software Foundation,
893N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
893N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
893N/A */
893N/A
893N/A#include "jni.h"
893N/A#include "jni_util.h"
893N/A#include "jvm.h"
893N/A#include "jlong.h"
893N/A#include "nio_util.h"
893N/A
893N/A#include "sun_nio_ch_EPoll.h"
893N/A
893N/A#include <dlfcn.h>
893N/A#include <unistd.h>
893N/A#include <sys/types.h>
4126N/A#include <sys/epoll.h>
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_EPoll_eventSize(JNIEnv* env, jclass this)
893N/A{
893N/A return sizeof(struct epoll_event);
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_EPoll_eventsOffset(JNIEnv* env, jclass this)
893N/A{
893N/A return offsetof(struct epoll_event, events);
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_EPoll_dataOffset(JNIEnv* env, jclass this)
893N/A{
893N/A return offsetof(struct epoll_event, data);
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_EPoll_epollCreate(JNIEnv *env, jclass c) {
893N/A /*
893N/A * epoll_create expects a size as a hint to the kernel about how to
893N/A * dimension internal structures. We can't predict the size in advance.
893N/A */
4126N/A int epfd = epoll_create(256);
893N/A if (epfd < 0) {
893N/A JNU_ThrowIOExceptionWithLastError(env, "epoll_create failed");
893N/A }
893N/A return epfd;
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_EPoll_epollCtl(JNIEnv *env, jclass c, jint epfd,
893N/A jint opcode, jint fd, jint events)
893N/A{
893N/A struct epoll_event event;
893N/A int res;
893N/A
893N/A event.events = events;
893N/A event.data.fd = fd;
893N/A
4126N/A RESTARTABLE(epoll_ctl(epfd, (int)opcode, (int)fd, &event), res);
893N/A
893N/A return (res == 0) ? 0 : errno;
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_EPoll_epollWait(JNIEnv *env, jclass c,
893N/A jint epfd, jlong address, jint numfds)
893N/A{
893N/A struct epoll_event *events = jlong_to_ptr(address);
893N/A int res;
893N/A
4126N/A RESTARTABLE(epoll_wait(epfd, events, numfds, -1), res);
893N/A if (res < 0) {
893N/A JNU_ThrowIOExceptionWithLastError(env, "epoll_wait failed");
893N/A }
893N/A return res;
893N/A}
893N/A
893N/AJNIEXPORT void JNICALL
893N/AJava_sun_nio_ch_EPoll_close0(JNIEnv *env, jclass c, jint epfd) {
893N/A int res;
893N/A RESTARTABLE(close(epfd), res);
893N/A}