--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/native/libjava/ObjectOutputStream.c Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,181 @@
+/*
+ * Copyright (c) 1999, 2013, 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 "jni_util.h"
+#include "jdk_util.h"
+
+#include "java_lang_Float.h"
+#include "java_lang_Double.h"
+#include "java_io_ObjectOutputStream.h"
+
+/*
+ * Class: java_io_ObjectOutputStream
+ * Method: floatsToBytes
+ * Signature: ([FI[BII)V
+ *
+ * Convert nfloats float values to their byte representations. Float values
+ * are read from array src starting at offset srcpos and written to array
+ * dst starting at offset dstpos.
+ */
+JNIEXPORT void JNICALL
+Java_java_io_ObjectOutputStream_floatsToBytes(JNIEnv *env,
+ jclass this,
+ jfloatArray src,
+ jint srcpos,
+ jbyteArray dst,
+ jint dstpos,
+ jint nfloats)
+{
+ union {
+ int i;
+ float f;
+ } u;
+ jfloat *floats;
+ jbyte *bytes;
+ jsize srcend;
+ jint ival;
+ float fval;
+
+ if (nfloats == 0)
+ return;
+
+ /* fetch source array */
+ if (src == NULL) {
+ JNU_ThrowNullPointerException(env, NULL);
+ return;
+ }
+ floats = (*env)->GetPrimitiveArrayCritical(env, src, NULL);
+ if (floats == NULL) /* exception thrown */
+ return;
+
+ /* fetch dest array */
+ if (dst == NULL) {
+ (*env)->ReleasePrimitiveArrayCritical(env, src, floats, JNI_ABORT);
+ JNU_ThrowNullPointerException(env, NULL);
+ return;
+ }
+ bytes = (*env)->GetPrimitiveArrayCritical(env, dst, NULL);
+ if (bytes == NULL) { /* exception thrown */
+ (*env)->ReleasePrimitiveArrayCritical(env, src, floats, JNI_ABORT);
+ return;
+ }
+
+ /* do conversion */
+ srcend = srcpos + nfloats;
+ for ( ; srcpos < srcend; srcpos++) {
+ fval = (float) floats[srcpos];
+ if (ISNANF(fval)) { /* collapse NaNs */
+ ival = 0x7fc00000;
+ } else {
+ u.f = fval;
+ ival = (jint) u.i;
+ }
+ bytes[dstpos++] = (ival >> 24) & 0xFF;
+ bytes[dstpos++] = (ival >> 16) & 0xFF;
+ bytes[dstpos++] = (ival >> 8) & 0xFF;
+ bytes[dstpos++] = (ival >> 0) & 0xFF;
+ }
+
+ (*env)->ReleasePrimitiveArrayCritical(env, src, floats, JNI_ABORT);
+ (*env)->ReleasePrimitiveArrayCritical(env, dst, bytes, 0);
+}
+
+/*
+ * Class: java_io_ObjectOutputStream
+ * Method: doublesToBytes
+ * Signature: ([DI[BII)V
+ *
+ * Convert ndoubles double values to their byte representations. Double
+ * values are read from array src starting at offset srcpos and written to
+ * array dst starting at offset dstpos.
+ */
+JNIEXPORT void JNICALL
+Java_java_io_ObjectOutputStream_doublesToBytes(JNIEnv *env,
+ jclass this,
+ jdoubleArray src,
+ jint srcpos,
+ jbyteArray dst,
+ jint dstpos,
+ jint ndoubles)
+{
+ union {
+ jlong l;
+ double d;
+ } u;
+ jdouble *doubles;
+ jbyte *bytes;
+ jsize srcend;
+ jdouble dval;
+ jlong lval;
+
+ if (ndoubles == 0)
+ return;
+
+ /* fetch source array */
+ if (src == NULL) {
+ JNU_ThrowNullPointerException(env, NULL);
+ return;
+ }
+ doubles = (*env)->GetPrimitiveArrayCritical(env, src, NULL);
+ if (doubles == NULL) /* exception thrown */
+ return;
+
+ /* fetch dest array */
+ if (dst == NULL) {
+ (*env)->ReleasePrimitiveArrayCritical(env, src, doubles, JNI_ABORT);
+ JNU_ThrowNullPointerException(env, NULL);
+ return;
+ }
+ bytes = (*env)->GetPrimitiveArrayCritical(env, dst, NULL);
+ if (bytes == NULL) { /* exception thrown */
+ (*env)->ReleasePrimitiveArrayCritical(env, src, doubles, JNI_ABORT);
+ return;
+ }
+
+ /* do conversion */
+ srcend = srcpos + ndoubles;
+ for ( ; srcpos < srcend; srcpos++) {
+ dval = doubles[srcpos];
+ if (ISNAND((double) dval)) { /* collapse NaNs */
+ lval = jint_to_jlong(0x7ff80000);
+ lval = jlong_shl(lval, 32);
+ } else {
+ jdouble_to_jlong_bits(&dval);
+ u.d = (double) dval;
+ lval = u.l;
+ }
+ bytes[dstpos++] = (lval >> 56) & 0xFF;
+ bytes[dstpos++] = (lval >> 48) & 0xFF;
+ bytes[dstpos++] = (lval >> 40) & 0xFF;
+ bytes[dstpos++] = (lval >> 32) & 0xFF;
+ bytes[dstpos++] = (lval >> 24) & 0xFF;
+ bytes[dstpos++] = (lval >> 16) & 0xFF;
+ bytes[dstpos++] = (lval >> 8) & 0xFF;
+ bytes[dstpos++] = (lval >> 0) & 0xFF;
+ }
+
+ (*env)->ReleasePrimitiveArrayCritical(env, src, doubles, JNI_ABORT);
+ (*env)->ReleasePrimitiveArrayCritical(env, dst, bytes, 0);
+}