jdk

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/*
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 * Copyright (c) 2003, 2023, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.  Oracle designates this
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 * particular file as subject to the "Classpath" exception as provided
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 * by Oracle in the LICENSE file that accompanied this code.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 */
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#include "jni.h"
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#include "jni_util.h"
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#include "jvm.h"
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#include "io_util.h"
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#include "jlong.h"
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#include "io_util_md.h"
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#include "java_io_FileDescriptor.h"
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/*******************************************************************/
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/*  BEGIN JNI ********* BEGIN JNI *********** BEGIN JNI ************/
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/*******************************************************************/
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/* field id for jint 'fd' in java.io.FileDescriptor */
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jfieldID IO_fd_fdID;
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/* field id for jlong 'handle' in java.io.FileDescriptor */
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jfieldID IO_handle_fdID;
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/* field id for jboolean 'append' in java.io.FileDescriptor */
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jfieldID IO_append_fdID;
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/**************************************************************
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 * static methods to store field IDs in initializers
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 */
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JNIEXPORT void JNICALL
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Java_java_io_FileDescriptor_initIDs(JNIEnv *env, jclass fdClass) {
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    CHECK_NULL(IO_fd_fdID = (*env)->GetFieldID(env, fdClass, "fd", "I"));
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    CHECK_NULL(IO_handle_fdID = (*env)->GetFieldID(env, fdClass, "handle", "J"));
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    CHECK_NULL(IO_append_fdID = (*env)->GetFieldID(env, fdClass, "append", "Z"));
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}
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/**************************************************************
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 * File Descriptor
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 */
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JNIEXPORT void JNICALL
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Java_java_io_FileDescriptor_sync0(JNIEnv *env, jobject this) {
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    FD fd = THIS_FD(this);
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    if (IO_Sync(fd) == -1) {
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        JNU_ThrowByName(env, "java/io/SyncFailedException", "sync failed");
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    }
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}
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JNIEXPORT jlong JNICALL
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Java_java_io_FileDescriptor_getHandle(JNIEnv *env, jclass fdClass, jint fd) {
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    SET_HANDLE(fd);
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}
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JNIEXPORT jboolean JNICALL
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Java_java_io_FileDescriptor_getAppend(JNIEnv *env, jclass fdClass, jint fd) {
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    return JNI_FALSE;
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}
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// instance method close0 for FileDescriptor
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JNIEXPORT void JNICALL
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Java_java_io_FileDescriptor_close0(JNIEnv *env, jobject this) {
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    fileDescriptorClose(env, this);
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}
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JNIEXPORT void JNICALL
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Java_java_io_FileCleanable_cleanupClose0(JNIEnv *env, jclass fdClass, jint unused, jlong handle) {
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    if (handle != -1) {
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        if (!CloseHandle((HANDLE)handle)) {
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            JNU_ThrowIOExceptionWithLastError(env, "close failed");
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        }
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    }
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}
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