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Java example source code file (jvm_windows.h)

This example Java source code file (jvm_windows.h) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Learn more about this Java project at its project page.

Java - Java tags/keywords

agent_onattach, agent_onunload, agent_onunload_symbols, jni_onload, jni_onunload_symbols, jvm_getthreadinterruptevent, jvm_sigterm, lpmoduleinfo, lpvoid, os_windows_vm_jvm_windows_h, sigint, sigterm

The jvm_windows.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.
 *
 * 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 OS_WINDOWS_VM_JVM_WINDOWS_H
#define OS_WINDOWS_VM_JVM_WINDOWS_H

#ifndef _JAVASOFT_JVM_MD_H_
#define _JAVASOFT_JVM_MD_H_

/*
 * This file is currently collecting system-specific dregs for the
 * JNI conversion, which should be sorted out later.
 */

// JDK7 requires VS2010
#if _MSC_VER >= 1600
// JDK7 minimum platform requirement: Windows XP
#if _WIN32_WINNT < 0x0501
#undef _WIN32_WINNT
#define _WIN32_WINNT  0x0501
#endif
#endif

#include <windows.h>

#if _MSC_VER <= 1200
// Psapi.h doesn't come with Visual Studio 6; it can be downloaded as Platform
// SDK from Microsoft.  Here are the definitions copied from Psapi.h
typedef struct _MODULEINFO {
    LPVOID lpBaseOfDll;
    DWORD SizeOfImage;
    LPVOID EntryPoint;
} MODULEINFO, *LPMODULEINFO;

#else
#include <Psapi.h>
#endif

#include <Tlhelp32.h>

typedef int socklen_t;

#define JNI_ONLOAD_SYMBOLS      {"_JNI_OnLoad@8", "JNI_OnLoad"}
#define JNI_ONUNLOAD_SYMBOLS    {"_JNI_OnUnload@8", "JNI_OnUnload"}
#define JVM_ONLOAD_SYMBOLS      {"_JVM_OnLoad@12", "JVM_OnLoad"}
#define AGENT_ONLOAD_SYMBOLS    {"_Agent_OnLoad@12", "Agent_OnLoad"}
#define AGENT_ONUNLOAD_SYMBOLS  {"_Agent_OnUnload@4", "Agent_OnUnload"}
#define AGENT_ONATTACH_SYMBOLS  {"_Agent_OnAttach@12", "Agent_OnAttach"}

#define JNI_LIB_PREFIX ""
#define JNI_LIB_SUFFIX ".dll"

struct dirent {
    char d_name[MAX_PATH];
};

typedef struct {
    struct dirent dirent;
    char *path;
    HANDLE handle;
    WIN32_FIND_DATA find_data;
} DIR;

#include <stdlib.h>

#define JVM_MAXPATHLEN _MAX_PATH

#define JVM_R_OK    4
#define JVM_W_OK    2
#define JVM_X_OK    1
#define JVM_F_OK    0

#ifdef __cplusplus
extern "C" {
#endif

JNIEXPORT void * JNICALL
JVM_GetThreadInterruptEvent();

#ifdef __cplusplus
} /* extern "C" */
#endif /* __cplusplus */

/*
 * File I/O
 */

#include <sys/stat.h>

/* O Flags */

#define JVM_O_RDONLY     O_RDONLY
#define JVM_O_WRONLY     O_WRONLY
#define JVM_O_RDWR       O_RDWR
#define JVM_O_O_APPEND   O_APPEND
#define JVM_O_EXCL       O_EXCL
#define JVM_O_CREAT      O_CREAT
#define JVM_O_DELETE     O_TEMPORARY

/* Signals */

#define JVM_SIGINT     SIGINT
#define JVM_SIGTERM    SIGTERM

#define SHUTDOWN1_SIGNAL SIGINT            /* Shutdown Hooks support.    */
#define SHUTDOWN2_SIGNAL SIGTERM

#endif /* !_JAVASOFT_JVM_MD_H_ */

#endif // OS_WINDOWS_VM_JVM_WINDOWS_H

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