893N/A/*
3261N/A * Copyright (c) 2008, 2010, 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 <windows.h>
893N/A
893N/A#include "jni.h"
893N/A#include "jni_util.h"
893N/A#include "jlong.h"
893N/A#include "nio.h"
893N/A#include "nio_util.h"
893N/A
893N/A#include "sun_nio_ch_WindowsAsynchronousFileChannelImpl.h"
893N/A
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_WindowsAsynchronousFileChannelImpl_readFile(JNIEnv* env, jclass this,
893N/A jlong handle, jlong address, jint len, jlong offset, jlong ov)
893N/A{
893N/A BOOL res;
893N/A
893N/A OVERLAPPED* lpOverlapped = (OVERLAPPED*)jlong_to_ptr(ov);
893N/A lpOverlapped->Offset = (DWORD)offset;
893N/A lpOverlapped->OffsetHigh = (DWORD)((long)(offset >> 32));
893N/A lpOverlapped->hEvent = NULL;
893N/A
893N/A res = ReadFile((HANDLE) jlong_to_ptr(handle),
893N/A (LPVOID) jlong_to_ptr(address),
893N/A (DWORD)len,
2083N/A NULL,
893N/A lpOverlapped);
893N/A
893N/A if (res == 0) {
893N/A int error = GetLastError();
893N/A if (error == ERROR_IO_PENDING)
893N/A return IOS_UNAVAILABLE;
893N/A if (error == ERROR_HANDLE_EOF)
893N/A return IOS_EOF;
893N/A JNU_ThrowIOExceptionWithLastError(env, "ReadFile failed");
893N/A return IOS_THROWN;
893N/A }
893N/A
2083N/A return IOS_UNAVAILABLE;
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_WindowsAsynchronousFileChannelImpl_writeFile(JNIEnv* env, jclass this,
893N/A jlong handle, jlong address, jint len, jlong offset, jlong ov)
893N/A{
893N/A BOOL res;
893N/A
893N/A OVERLAPPED* lpOverlapped = (OVERLAPPED*)jlong_to_ptr(ov);
893N/A lpOverlapped->Offset = (DWORD)offset;
893N/A lpOverlapped->OffsetHigh = (DWORD)((long)(offset >> 32));
893N/A lpOverlapped->hEvent = NULL;
893N/A
893N/A res = WriteFile((HANDLE)jlong_to_ptr(handle),
893N/A (LPVOID) jlong_to_ptr(address),
893N/A (DWORD)len,
2083N/A NULL,
893N/A lpOverlapped);
893N/A
893N/A if (res == 0) {
893N/A int error = GetLastError();
2083N/A if (error == ERROR_IO_PENDING)
893N/A return IOS_UNAVAILABLE;
893N/A JNU_ThrowIOExceptionWithLastError(env, "WriteFile failed");
893N/A return IOS_THROWN;
893N/A }
2083N/A
2083N/A return IOS_UNAVAILABLE;
893N/A}
893N/A
893N/AJNIEXPORT jint JNICALL
893N/AJava_sun_nio_ch_WindowsAsynchronousFileChannelImpl_lockFile(JNIEnv *env, jobject this, jlong handle,
893N/A jlong pos, jlong size, jboolean shared, jlong ov)
893N/A{
893N/A BOOL res;
893N/A HANDLE h = jlong_to_ptr(handle);
893N/A DWORD lowPos = (DWORD)pos;
893N/A long highPos = (long)(pos >> 32);
893N/A DWORD lowNumBytes = (DWORD)size;
893N/A DWORD highNumBytes = (DWORD)(size >> 32);
893N/A DWORD flags = (shared == JNI_TRUE) ? 0 : LOCKFILE_EXCLUSIVE_LOCK;
893N/A OVERLAPPED* lpOverlapped = (OVERLAPPED*)jlong_to_ptr(ov);
893N/A
893N/A lpOverlapped->Offset = lowPos;
893N/A lpOverlapped->OffsetHigh = highPos;
893N/A lpOverlapped->hEvent = NULL;
893N/A
893N/A res = LockFileEx(h, flags, 0, lowNumBytes, highNumBytes, lpOverlapped);
893N/A if (res == 0) {
893N/A int error = GetLastError();
893N/A if (error == ERROR_IO_PENDING) {
893N/A return IOS_UNAVAILABLE;
893N/A }
893N/A JNU_ThrowIOExceptionWithLastError(env, "WriteFile failed");
893N/A return IOS_THROWN;
893N/A }
893N/A return 0;
893N/A}
893N/A
893N/AJNIEXPORT void JNICALL
893N/AJava_sun_nio_ch_WindowsAsynchronousFileChannelImpl_close0(JNIEnv* env, jclass this,
893N/A jlong handle)
893N/A{
893N/A HANDLE h = (HANDLE)jlong_to_ptr(handle);
893N/A CloseHandle(h);
893N/A}