--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/jdk.net/linux/native/libextnet/RdmaSocketOutputStream.c Sat Jan 26 14:02:35 2019 +0000
@@ -0,0 +1,118 @@
+/*
+ * 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 <stdlib.h>
+#include "net_util.h"
+#include "rdma_util_md.h"
+#include "jdk_internal_net_rdma_RdmaSocketOutputStream.h"
+
+#define min(a, b) ((a) < (b) ? (a) : (b))
+
+static jfieldID IO_fd_fdID;
+
+/*
+ * Class: jdk_net_SocketOutputStream
+ * Method: init
+ * Signature: ()V
+ */
+JNIEXPORT void JNICALL
+Java_jdk_internal_net_rdma_RdmaSocketOutputStream_init(JNIEnv *env,
+ jclass cls) {
+ IO_fd_fdID = NET_GetFileDescriptorID(env);
+}
+
+/*
+ * Class: jdk_net_RdmaSocketOutputStream
+ * Method: rdmaSocketWrite0
+ * Signature: (Ljava/io/FileDescriptor;[BII)V
+ */
+JNIEXPORT void JNICALL
+Java_jdk_internal_net_rdma_RdmaSocketOutputStream_rdmaSocketWrite0(JNIEnv *env,
+ jobject this, jobject fdObj, jbyteArray data, jint off, jint len) {
+ char *bufP;
+ char BUF[MAX_BUFFER_LEN];
+ int buflen;
+ int fd;
+
+ if (IS_NULL(fdObj)) {
+ JNU_ThrowByName(env, "java/net/SocketException", "Socket closed");
+ return;
+ } else {
+ fd = (*env)->GetIntField(env, fdObj, IO_fd_fdID);
+ if (fd == -1) {
+ JNU_ThrowByName(env, "java/net/SocketException", "Socket closed");
+ return;
+ }
+ }
+
+ if (len <= MAX_BUFFER_LEN) {
+ bufP = BUF;
+ buflen = MAX_BUFFER_LEN;
+ } else {
+ buflen = min(MAX_HEAP_BUFFER_LEN, len);
+ bufP = (char *)malloc((size_t)buflen);
+
+ if (bufP == NULL) {
+ bufP = BUF;
+ buflen = MAX_BUFFER_LEN;
+ }
+ }
+
+ while(len > 0) {
+ int loff = 0;
+ int chunkLen = min(buflen, len);
+ int llen = chunkLen;
+ (*env)->GetByteArrayRegion(env, data, off, chunkLen, (jbyte *)bufP);
+
+ if ((*env)->ExceptionCheck(env)) {
+ break;
+ } else {
+ while(llen > 0) {
+ int n = RDMA_Send(fd, bufP + loff, llen, 0);
+ if (n > 0) {
+ llen -= n;
+ loff += n;
+ continue;
+ }
+ if (errno == ECONNRESET) {
+ JNU_ThrowByName(env, "sun/net/ConnectionResetException",
+ "Connection reset");
+ } else {
+ JNU_ThrowByNameWithMessageAndLastError
+ (env, "java/net/SocketException", "Write failed");
+ }
+ if (bufP != BUF) {
+ free(bufP);
+ }
+ return;
+ }
+ len -= chunkLen;
+ off += chunkLen;
+ }
+ }
+
+ if (bufP != BUF) {
+ free(bufP);
+ }
+}