| /* |
| * Copyright (c) 2008, 2017, 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. |
| */ |
| |
| #include <windows.h> |
| |
| #include "jni.h" |
| #include "jni_util.h" |
| #include "jlong.h" |
| #include "nio.h" |
| #include "nio_util.h" |
| |
| #include "sun_nio_ch_WindowsAsynchronousFileChannelImpl.h" |
| |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_WindowsAsynchronousFileChannelImpl_readFile(JNIEnv* env, jclass this, |
| jlong handle, jlong address, jint len, jlong offset, jlong ov) |
| { |
| BOOL res; |
| |
| OVERLAPPED* lpOverlapped = (OVERLAPPED*)jlong_to_ptr(ov); |
| lpOverlapped->Offset = (DWORD)offset; |
| lpOverlapped->OffsetHigh = (DWORD)((long)(offset >> 32)); |
| lpOverlapped->hEvent = NULL; |
| |
| res = ReadFile((HANDLE) jlong_to_ptr(handle), |
| (LPVOID) jlong_to_ptr(address), |
| (DWORD)len, |
| NULL, |
| lpOverlapped); |
| |
| if (res == 0) { |
| int error = GetLastError(); |
| if (error == ERROR_IO_PENDING) |
| return IOS_UNAVAILABLE; |
| if (error == ERROR_HANDLE_EOF) |
| return IOS_EOF; |
| JNU_ThrowIOExceptionWithLastError(env, "ReadFile failed"); |
| return IOS_THROWN; |
| } |
| |
| return IOS_UNAVAILABLE; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_WindowsAsynchronousFileChannelImpl_writeFile(JNIEnv* env, jclass this, |
| jlong handle, jlong address, jint len, jlong offset, jlong ov) |
| { |
| BOOL res; |
| |
| OVERLAPPED* lpOverlapped = (OVERLAPPED*)jlong_to_ptr(ov); |
| lpOverlapped->Offset = (DWORD)offset; |
| lpOverlapped->OffsetHigh = (DWORD)((long)(offset >> 32)); |
| lpOverlapped->hEvent = NULL; |
| |
| res = WriteFile((HANDLE)jlong_to_ptr(handle), |
| (LPVOID) jlong_to_ptr(address), |
| (DWORD)len, |
| NULL, |
| lpOverlapped); |
| |
| if (res == 0) { |
| int error = GetLastError(); |
| if (error == ERROR_IO_PENDING) |
| return IOS_UNAVAILABLE; |
| JNU_ThrowIOExceptionWithLastError(env, "WriteFile failed"); |
| return IOS_THROWN; |
| } |
| |
| return IOS_UNAVAILABLE; |
| } |
| |
| JNIEXPORT jint JNICALL |
| Java_sun_nio_ch_WindowsAsynchronousFileChannelImpl_lockFile(JNIEnv *env, jobject this, jlong handle, |
| jlong pos, jlong size, jboolean shared, jlong ov) |
| { |
| BOOL res; |
| HANDLE h = jlong_to_ptr(handle); |
| DWORD lowPos = (DWORD)pos; |
| long highPos = (long)(pos >> 32); |
| DWORD lowNumBytes = (DWORD)size; |
| DWORD highNumBytes = (DWORD)(size >> 32); |
| DWORD flags = (shared == JNI_TRUE) ? 0 : LOCKFILE_EXCLUSIVE_LOCK; |
| OVERLAPPED* lpOverlapped = (OVERLAPPED*)jlong_to_ptr(ov); |
| |
| lpOverlapped->Offset = lowPos; |
| lpOverlapped->OffsetHigh = highPos; |
| lpOverlapped->hEvent = NULL; |
| |
| res = LockFileEx(h, flags, 0, lowNumBytes, highNumBytes, lpOverlapped); |
| if (res == 0) { |
| int error = GetLastError(); |
| if (error == ERROR_IO_PENDING) { |
| return IOS_UNAVAILABLE; |
| } |
| JNU_ThrowIOExceptionWithLastError(env, "WriteFile failed"); |
| return IOS_THROWN; |
| } |
| return 0; |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_ch_WindowsAsynchronousFileChannelImpl_close0(JNIEnv* env, jclass this, |
| jlong handle) |
| { |
| HANDLE h = (HANDLE)jlong_to_ptr(handle); |
| BOOL result = CloseHandle(h); |
| if (result == 0) { |
| JNU_ThrowIOExceptionWithLastError(env, "Close failed"); |
| } |
| } |