Java example source code file (util_md.h)

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Java - Java tags/keywords

host_to_java_char, host_to_java_double, host_to_java_float, host_to_java_int, host_to_java_long, host_to_java_short, java_to_host_char, java_to_host_float, java_to_host_long, jdwp_util_md_h, maxpathlen, path_max, unsigned_jint, unsigned_jlong

The util_md.h Java example source code

/*
 * Copyright (c) 1998, 2012, 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.
 */

#ifndef JDWP_UTIL_MD_H
#define JDWP_UTIL_MD_H

#include <stddef.h>
#include <stdint.h>  /* To get uintptr_t */

#include <limits.h>
#include <sys/types.h>
#ifdef _ALLBSD_SOURCE
#include <machine/endian.h>
#elif __linux__
#include <endian.h>
#endif

#ifdef _LP64
typedef unsigned long UNSIGNED_JLONG;
typedef unsigned int UNSIGNED_JINT;
#else /* _LP64 */
typedef unsigned long long UNSIGNED_JLONG;
typedef unsigned long UNSIGNED_JINT;
#endif /* _LP64 */

#ifndef MAXPATHLEN
#define MAXPATHLEN              PATH_MAX
#endif

/* On little endian machines, convert java big endian numbers. */

#if defined(_LITTLE_ENDIAN)

#define HOST_TO_JAVA_CHAR(x) (((x & 0xff) << 8) | ((x >> 8) & (0xff)))
#define HOST_TO_JAVA_SHORT(x) (((x & 0xff) << 8) | ((x >> 8) & (0xff)))
#define HOST_TO_JAVA_INT(x)                                             \
                  ((x << 24) |                                          \
                   ((x & 0x0000ff00) << 8) |                            \
                   ((x & 0x00ff0000) >> 8) |                            \
                   (((UNSIGNED_JINT)(x & 0xff000000)) >> 24))
#define HOST_TO_JAVA_LONG(x)                                            \
                  ((x << 56) |                                          \
                   ((x & 0x000000000000ff00) << 40) |                   \
                   ((x & 0x0000000000ff0000) << 24) |                   \
                   ((x & 0x00000000ff000000) << 8) |                    \
                   ((x & 0x000000ff00000000) >> 8) |                    \
                   ((x & 0x0000ff0000000000) >> 24) |                   \
                   ((x & 0x00ff000000000000) >> 40) |                   \
                   (((UNSIGNED_JLONG)(x & 0xff00000000000000)) >> 56))
#define HOST_TO_JAVA_FLOAT(x) stream_encodeFloat(x)
#define HOST_TO_JAVA_DOUBLE(x) stream_encodeDouble(x)

#else

#define HOST_TO_JAVA_CHAR(x)   (x)
#define HOST_TO_JAVA_SHORT(x)  (x)
#define HOST_TO_JAVA_INT(x)    (x)
#define HOST_TO_JAVA_LONG(x)   (x)
#define HOST_TO_JAVA_FLOAT(x)  (x)
#define HOST_TO_JAVA_DOUBLE(x) (x)

#endif

#define JAVA_TO_HOST_CHAR(x)   HOST_TO_JAVA_CHAR(x)
#define JAVA_TO_HOST_SHORT(x)  HOST_TO_JAVA_SHORT(x)
#define JAVA_TO_HOST_INT(x)    HOST_TO_JAVA_INT(x)
#define JAVA_TO_HOST_LONG(x)   HOST_TO_JAVA_LONG(x)
#define JAVA_TO_HOST_FLOAT(x)  HOST_TO_JAVA_FLOAT(x)
#define JAVA_TO_HOST_DOUBLE(x) HOST_TO_JAVA_DOUBLE(x)

#endif