--- old/src/java.base/macosx/native/libnio/ch/KQueueArrayWrapper.c 2018-03-22 13:26:57.000000000 +0000 +++ /dev/null 2018-03-22 13:26:57.000000000 +0000 @@ -1,175 +0,0 @@ -/* - * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -/* - * KQueueArrayWrapper.c - * Implementation of Selector using FreeBSD / Mac OS X kqueues - * Derived from Sun's DevPollArrayWrapper - */ - - -#include "jni.h" -#include "jni_util.h" -#include "jvm.h" -#include "jlong.h" -#include "nio_util.h" - -#include -#include -#include - -JNIEXPORT void JNICALL -Java_sun_nio_ch_KQueueArrayWrapper_initStructSizes(JNIEnv *env, jclass clazz) -{ -#define CHECK_EXCEPTION() { \ - if ((*env)->ExceptionCheck(env)) { \ - goto exceptionOccurred; \ - } \ -} - -#define CHECK_ERROR_AND_EXCEPTION(_field) { \ - if (_field == NULL) { \ - goto badField; \ - } \ - CHECK_EXCEPTION(); \ -} - - - jfieldID field; - - field = (*env)->GetStaticFieldID(env, clazz, "EVFILT_READ", "S"); - CHECK_ERROR_AND_EXCEPTION(field); - (*env)->SetStaticShortField(env, clazz, field, EVFILT_READ); - CHECK_EXCEPTION(); - - field = (*env)->GetStaticFieldID(env, clazz, "EVFILT_WRITE", "S"); - CHECK_ERROR_AND_EXCEPTION(field); - (*env)->SetStaticShortField(env, clazz, field, EVFILT_WRITE); - CHECK_EXCEPTION(); - - field = (*env)->GetStaticFieldID(env, clazz, "SIZEOF_KEVENT", "S"); - CHECK_ERROR_AND_EXCEPTION(field); - (*env)->SetStaticShortField(env, clazz, field, (short) sizeof(struct kevent)); - CHECK_EXCEPTION(); - - field = (*env)->GetStaticFieldID(env, clazz, "FD_OFFSET", "S"); - CHECK_ERROR_AND_EXCEPTION(field); - (*env)->SetStaticShortField(env, clazz, field, (short) offsetof(struct kevent, ident)); - CHECK_EXCEPTION(); - - field = (*env)->GetStaticFieldID(env, clazz, "FILTER_OFFSET", "S"); - CHECK_ERROR_AND_EXCEPTION(field); - (*env)->SetStaticShortField(env, clazz, field, (short) offsetof(struct kevent, filter)); - CHECK_EXCEPTION(); - return; - -badField: - return; - -exceptionOccurred: - return; - -#undef CHECK_EXCEPTION -#undef CHECK_ERROR_AND_EXCEPTION -} - -JNIEXPORT jint JNICALL -Java_sun_nio_ch_KQueueArrayWrapper_init(JNIEnv *env, jobject this) -{ - int kq = kqueue(); - if (kq < 0) { - JNU_ThrowIOExceptionWithLastError(env, "KQueueArrayWrapper: kqueue() failed"); - } - return kq; -} - - -JNIEXPORT void JNICALL -Java_sun_nio_ch_KQueueArrayWrapper_register0(JNIEnv *env, jobject this, - jint kq, jint fd, jint r, jint w) -{ - struct kevent changes[2]; - struct kevent errors[2]; - struct timespec dontBlock = {0, 0}; - - // if (r) then { register for read } else { unregister for read } - // if (w) then { register for write } else { unregister for write } - // Ignore errors - they're probably complaints about deleting non- - // added filters - but provide an error array anyway because - // kqueue behaves erratically if some of its registrations fail. - EV_SET(&changes[0], fd, EVFILT_READ, r ? EV_ADD : EV_DELETE, 0, 0, 0); - EV_SET(&changes[1], fd, EVFILT_WRITE, w ? EV_ADD : EV_DELETE, 0, 0, 0); - kevent(kq, changes, 2, errors, 2, &dontBlock); -} - -JNIEXPORT jint JNICALL -Java_sun_nio_ch_KQueueArrayWrapper_kevent0(JNIEnv *env, jobject this, jint kq, - jlong kevAddr, jint kevCount, - jlong timeout) -{ - struct kevent *kevs = (struct kevent *)jlong_to_ptr(kevAddr); - struct timespec ts; - struct timespec *tsp; - int result; - - // Java timeout is in milliseconds. Convert to struct timespec. - // Java timeout == -1 : wait forever : timespec timeout of NULL - // Java timeout == 0 : return immediately : timespec timeout of zero - if (timeout >= 0) { - // For some indeterminate reason kevent(2) has been found to fail with - // an EINVAL error for timeout values greater than or equal to - // 100000001000L. To avoid this problem, clamp the timeout arbitrarily - // to the maximum value of a 32-bit signed integer which is - // approximately 25 days in milliseconds. - const jlong timeoutMax = 0x7fffffff; // java.lang.Integer.MAX_VALUE - if (timeout > timeoutMax) { - timeout = timeoutMax; - } - ts.tv_sec = timeout / 1000; - ts.tv_nsec = (timeout % 1000) * 1000000; //nanosec = 1 million millisec - tsp = &ts; - } else { - tsp = NULL; - } - - RESTARTABLE(kevent(kq, NULL, 0, kevs, kevCount, tsp), result); - if (result < 0) { - JNU_ThrowIOExceptionWithLastError(env, - "KQueueArrayWrapper: kevent poll failed"); - } - - return result; -} - - -JNIEXPORT void JNICALL -Java_sun_nio_ch_KQueueArrayWrapper_interrupt(JNIEnv *env, jclass cls, jint fd) -{ - char c = 1; - if (1 != write(fd, &c, 1)) { - JNU_ThrowIOExceptionWithLastError(env, "KQueueArrayWrapper: interrupt failed"); - } -} -