| /* |
| * Copyright (c) 2008, 2015, 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_Iocp.h" |
| |
| |
| static jfieldID completionStatus_error; |
| static jfieldID completionStatus_bytesTransferred; |
| static jfieldID completionStatus_completionKey; |
| static jfieldID completionStatus_overlapped; |
| |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_ch_Iocp_initIDs(JNIEnv* env, jclass this) |
| { |
| jclass clazz; |
| |
| clazz = (*env)->FindClass(env, "sun/nio/ch/Iocp$CompletionStatus"); |
| CHECK_NULL(clazz); |
| completionStatus_error = (*env)->GetFieldID(env, clazz, "error", "I"); |
| CHECK_NULL(completionStatus_error); |
| completionStatus_bytesTransferred = (*env)->GetFieldID(env, clazz, "bytesTransferred", "I"); |
| CHECK_NULL(completionStatus_bytesTransferred); |
| completionStatus_completionKey = (*env)->GetFieldID(env, clazz, "completionKey", "I"); |
| CHECK_NULL(completionStatus_completionKey); |
| completionStatus_overlapped = (*env)->GetFieldID(env, clazz, "overlapped", "J"); |
| CHECK_NULL(completionStatus_overlapped); |
| } |
| |
| JNIEXPORT jlong JNICALL |
| Java_sun_nio_ch_Iocp_createIoCompletionPort(JNIEnv* env, jclass this, |
| jlong handle, jlong existingPort, jint completionKey, jint concurrency) |
| { |
| ULONG_PTR ck = completionKey; |
| HANDLE port = CreateIoCompletionPort((HANDLE)jlong_to_ptr(handle), |
| (HANDLE)jlong_to_ptr(existingPort), |
| ck, |
| (DWORD)concurrency); |
| if (port == NULL) { |
| JNU_ThrowIOExceptionWithLastError(env, "CreateIoCompletionPort failed"); |
| } |
| return ptr_to_jlong(port); |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_ch_Iocp_close0(JNIEnv* env, jclass this, |
| jlong handle) |
| { |
| HANDLE h = (HANDLE)jlong_to_ptr(handle); |
| CloseHandle(h); |
| } |
| |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_ch_Iocp_getQueuedCompletionStatus(JNIEnv* env, jclass this, |
| jlong completionPort, jobject obj) |
| { |
| DWORD bytesTransferred; |
| ULONG_PTR completionKey; |
| OVERLAPPED *lpOverlapped; |
| BOOL res; |
| |
| res = GetQueuedCompletionStatus((HANDLE)jlong_to_ptr(completionPort), |
| &bytesTransferred, |
| &completionKey, |
| &lpOverlapped, |
| INFINITE); |
| if (res == 0 && lpOverlapped == NULL) { |
| JNU_ThrowIOExceptionWithLastError(env, "GetQueuedCompletionStatus failed"); |
| } else { |
| DWORD ioResult = (res == 0) ? GetLastError() : 0; |
| (*env)->SetIntField(env, obj, completionStatus_error, ioResult); |
| (*env)->SetIntField(env, obj, completionStatus_bytesTransferred, |
| (jint)bytesTransferred); |
| (*env)->SetIntField(env, obj, completionStatus_completionKey, |
| (jint)completionKey); |
| (*env)->SetLongField(env, obj, completionStatus_overlapped, |
| ptr_to_jlong(lpOverlapped)); |
| |
| } |
| } |
| |
| JNIEXPORT void JNICALL |
| Java_sun_nio_ch_Iocp_postQueuedCompletionStatus(JNIEnv* env, jclass this, |
| jlong completionPort, jint completionKey) |
| { |
| BOOL res; |
| |
| res = PostQueuedCompletionStatus((HANDLE)jlong_to_ptr(completionPort), |
| (DWORD)0, |
| (DWORD)completionKey, |
| NULL); |
| if (res == 0) { |
| JNU_ThrowIOExceptionWithLastError(env, "PostQueuedCompletionStatus"); |
| } |
| } |
| |
| JNIEXPORT jstring JNICALL |
| Java_sun_nio_ch_Iocp_getErrorMessage(JNIEnv* env, jclass this, jint errorCode) |
| { |
| WCHAR message[255]; |
| |
| DWORD len = FormatMessageW(FORMAT_MESSAGE_FROM_SYSTEM, |
| NULL, |
| (DWORD)errorCode, |
| 0, |
| &message[0], |
| 255, |
| NULL); |
| |
| |
| if (len == 0) { |
| return NULL; |
| } else { |
| return (*env)->NewString(env, (const jchar *)message, (jsize)wcslen(message)); |
| } |
| } |