--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.net/linux/native/libextnet/LinuxRdmaSocketDispatcherImpl.c Sat Jan 26 14:02:35 2019 +0000
@@ -0,0 +1,195 @@
+/*
+ * Copyright (c) 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.
+ */
+
+#include "jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl.h"
+#include "nio.h"
+#include "nio_util.h"
+#include <Rsocket.h>
+
+static jfieldID fd_fdID;
+
+jint
+convertReturnVal(JNIEnv *env, jint n, jboolean reading) {
+ if (n > 0)
+ return n;
+ else if (n == 0) {
+ if (reading) {
+ return IOS_EOF;
+ } else {
+ return 0;
+ }
+ }
+ else if (errno == EAGAIN)
+ return IOS_UNAVAILABLE;
+ else if (errno == EINTR)
+ return IOS_INTERRUPTED;
+ else {
+ const char *msg = reading ? "Read failed" : "Write failed";
+ JNU_ThrowIOExceptionWithLastError(env, msg);
+ return IOS_THROWN;
+ }
+}
+
+jlong
+convertLongReturnVal(JNIEnv *env, jlong n, jboolean reading) {
+ if (n > 0)
+ return n;
+ else if (n == 0) {
+ if (reading) {
+ return IOS_EOF;
+ } else {
+ return 0;
+ }
+ }
+ else if (errno == EAGAIN)
+ return IOS_UNAVAILABLE;
+ else if (errno == EINTR)
+ return IOS_INTERRUPTED;
+ else {
+ const char *msg = reading ? "Read failed" : "Write failed";
+ JNU_ThrowIOExceptionWithLastError(env, msg);
+ return IOS_THROWN;
+ }
+}
+
+JNIEXPORT void JNICALL
+Java_jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl_init(JNIEnv *env,
+ jclass cl) {
+ loadRdmaFuncs(env);
+ CHECK_NULL(cl = (*env)->FindClass(env, "java/io/FileDescriptor"));
+ CHECK_NULL(fd_fdID = (*env)->GetFieldID(env, cl, "fd", "I"));
+}
+
+JNIEXPORT jint JNICALL
+Java_jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl_read0(JNIEnv *env,
+ jclass clazz, jobject fdo, jlong address, jint len) {
+ jint fd = (*env)->GetIntField(env, fdo, fd_fdID);
+ void *buf = (void *)jlong_to_ptr(address);
+ jint result = convertReturnVal(env, rs_read(fd, buf, len), JNI_TRUE);
+/*
+ if (result == IOS_UNAVAILABLE
+ && (rs_fcntl(fd, F_GETFL, 0) & O_NONBLOCK) == 0) { // blocking
+ struct pollfd pfd[1];
+ pfd[0].fd = fd;
+ pfd[0].events = POLLIN;
+ rs_poll(pfd, 1, -1);
+ if (pfd[0].revents & POLLIN)
+ result = convertReturnVal(env, rs_read(fd, buf, len), JNI_TRUE);
+ else {
+ JNU_ThrowIOExceptionWithLastError(env, "Read failed");
+ return IOS_THROWN;
+ }
+ }
+*/
+ return result;
+}
+
+JNIEXPORT jlong JNICALL
+Java_jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl_readv0(JNIEnv *env,
+ jclass clazz, jobject fdo, jlong address, jint len) {
+ jint fd = (*env)->GetIntField(env, fdo, fd_fdID);
+ struct iovec *iov = (struct iovec *)jlong_to_ptr(address);
+ jlong result = convertLongReturnVal(env, rs_readv(fd, iov, len), JNI_TRUE);
+/*
+ if (result == IOS_UNAVAILABLE
+ && (rs_fcntl(fd, F_GETFL, 0) & O_NONBLOCK) == 0) { // blocking
+ struct pollfd pfd[1];
+ pfd[0].fd = fd;
+ pfd[0].events = POLLIN;
+ rs_poll(pfd, 1, -1);
+ if (pfd[0].revents & POLLIN)
+ result = convertLongReturnVal(env, rs_readv(fd, iov, len), JNI_TRUE);
+ else {
+ JNU_ThrowIOExceptionWithLastError(env, "Read failed");
+ return IOS_THROWN;
+ }
+ }
+*/
+ return result;
+}
+
+JNIEXPORT jint JNICALL
+Java_jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl_write0(JNIEnv *env,
+ jclass clazz, jobject fdo, jlong address, jint len) {
+ jint fd = (*env)->GetIntField(env, fdo, fd_fdID);
+ void *buf = (void *)jlong_to_ptr(address);
+ jint result = convertReturnVal(env, rs_write(fd, buf, len), JNI_FALSE);
+/*
+ if (result == IOS_UNAVAILABLE
+ && (rs_fcntl(fd, F_GETFL, 0) & O_NONBLOCK) == 0) { // blocking
+ struct pollfd pfd[1];
+ pfd[0].fd = fd;
+ pfd[0].events = POLLOUT;
+ rs_poll(pfd, 1, -1);
+ if (pfd[0].revents & POLLOUT)
+ result = convertReturnVal(env, rs_write(fd, buf, len), JNI_FALSE);
+ else {
+ JNU_ThrowIOExceptionWithLastError(env, "Write failed");
+ return IOS_THROWN;
+ }
+ }
+*/
+ return result;
+}
+
+JNIEXPORT jlong JNICALL
+Java_jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl_writev0(JNIEnv *env,
+ jclass clazz, jobject fdo, jlong address, jint len) {
+ jint fd = (*env)->GetIntField(env, fdo, fd_fdID);
+ struct iovec *iov = (struct iovec *)jlong_to_ptr(address);
+ jlong result = convertLongReturnVal(env, rs_writev(fd, iov, len),
+ JNI_FALSE);
+/*
+ if (result == IOS_UNAVAILABLE
+ && (rs_fcntl(fd, F_GETFL, 0) & O_NONBLOCK) == 0) { // blocking
+ struct pollfd pfd[1];
+ pfd[0].fd = fd;
+ pfd[0].events = POLLOUT;
+ rs_poll(pfd, 1, -1);
+ if (pfd[0].revents & POLLOUT)
+ result = convertLongReturnVal(env, rs_writev(fd, iov, len), JNI_FALSE);
+ else {
+ JNU_ThrowIOExceptionWithLastError(env, "Write failed");
+ return IOS_THROWN;
+ }
+ }
+*/
+ return result;
+}
+
+static void closeFileDescriptor(JNIEnv *env, int fd) {
+ if (fd != -1) {
+ int result = rs_close(fd);
+ if (result < 0)
+ JNU_ThrowIOExceptionWithLastError(env, "Close failed");
+ }
+}
+
+JNIEXPORT void JNICALL
+Java_jdk_internal_net_rdma_LinuxRdmaSocketDispatcherImpl_close0(JNIEnv *env,
+ jclass clazz, jobject fdo) {
+ jint fd = (*env)->GetIntField(env, fdo, fd_fdID);
+ closeFileDescriptor(env, fd);
+}