C++博客-GCC/GNU/Linux Delphi/Window Java/Anywhere

NO.7 信令系统基本功能结构

Khan's Notebook — Wed, 01 Jul 2009 08:16:00 GMT

摘要: No.7 SS7 阅读全文

Khan's Notebook 2009-07-01 16:16 发表评论

7bit_default_table pud格式7bit编码对应表

Khan's Notebook — Fri, 08 May 2009 07:45:00 GMT

摘要: GSM 3.38中定义的pdu格式编码, 其中7bit的部分不光要处理常见的ascii编码, 还要处理一些欧洲字符, 这些字符不在常规的127个ascii字符中, 所以需要如下映射表做一个映射, 另有部分字符与在ascii中的位置不一致, 所以千万要注意. 网上不少山寨代码都忽略协议. 想当然的实现了所谓的pdu编码格式. 忧郁中. ... 阅读全文

Khan's Notebook 2009-05-08 15:45 发表评论

Blackberry JDE 4.5中文开发环境设置

Khan's Notebook — Thu, 12 Feb 2009 07:28:00 GMT

以8820为例:
8820的操作系统为4.5版本, 所以需要下载 JDE 4.5 包含ide和sdk 以及对应的模拟器

1.下载安装 Blackberry JDE 4.5.0.exe

2. 在安装目录\Research In Motion\BlackBerry JDE 4.5.0\simulator\Java下
编辑 chinese.bat
输入
javaloader -usb load net_rim_vad_resource__zh_CN.cod net_rim_vad_engine_resource__zh_CN.cod net_rim_bb_crypto_resource__zh_CN.cod net_rim_bb_options_chinese.cod net_rim_bb_resource__zh_CN.cod net_rim_font_chinese.cod net_rim_font_chinese_hong_kong.cod net_rim_platform_im_resource__zh_CN.cod net_rim_platform_resource__zh.cod net_rim_platform_resource__zh_CN.cod net_rim_platform_resource__zh_HK.cod net_rim_platformapps_resource__zh_CN.cod net_rim_runtime_resource__zh_CN.cod net_rim_secureemail_resource__zh_CN.cod net_rim_tid_chinese_cj_core.cod net_rim_tid_chinese_jni_core.cod net_rim_tid_dynamic_transcoding_data_Big5_HKSCS.cod net_rim_tid_dynamic_transcoding_data_EUC_CN.cod

保存退出

3.copy 安装目录\Research In Motion\BlackBerry JDE 4.5.0\bin\JavaLoader.exe 到安装目录\Research In Motion\BlackBerry JDE 4.5.0\simulator\Java下

开启模拟器
选中菜单Simulate->USB cable connect

4.执行chinese.bat,然后退出模拟器

5.在安装目录\Research In Motion\BlackBerry JDE 4.5.0\simulator\Java下
编辑 chineseinput.bat
输入
javaloader -usb load net_rim_tid_chinese_PinyinForReduced.cod net_rim_bb_options_PinyinFR.cod net_rim_tid_chinese_wubi.cod net_rim_platform_resource__zh_CN_WuBiHua.cod net_rim_platform_resource__zh_TW.cod net_rim_tid_chinese_stroke_trad.cod net_rim_platform_resource__zh_TW_Strokes.cod net_rim_platform_resource__zh_HK_Strokes.cod net_rim_font_chinese_hong_kong.cod net_rim_tid_dynamic_transcoding_data_Big5_HKSCS.cod net_rim_font_japanese.cod net_rim_tid_dynamic_transcoding_data_Shift_JIS.cod net_rim_tid_dynamic_transcoding_data_EUC_JP.cod net_rim_font_korean.cod net_rim_tid_dynamic_transcoding_data_EUC_KR.cod net_rim_tid_dynamic_transcoding_data_x_Johab.cod net_rim_tid_dynamic_transcoding_data_KSC5601.cod net_rim_bb_options_chinese.cod net_rim_tid_chinese_common.cod net_rim_tid_chinese_jni_core.cod net_rim_tid_chinese_cj_core.cod net_rim_platform_im_resource__zh_CN.cod net_rim_platform_resource__zh_CN.cod net_rim_platformapps_resource__zh_CN.cod net_rim_platform_resource__zh_HK.cod net_rim_platform_resource__zh.cod net_rim_font_chinese.cod net_rim_tid_dynamic_transcoding_data_EUC_CN.cod net_rim_font_chinese_traditional.cod net_rim_tid_dynamic_transcoding_data_Big5.cod net_rim_font_chinese_hong_kong.cod net_rim_tid_dynamic_transcoding_data_Big5_HKSCS.cod net_rim_runtime_resource__zh_CN.cod net_rim_bb_resource__zh_CN.cod net_rim_bb_diagnostic_resource__zh.cod net_rim_bb_diagnostic_resource__zh_CN.cod net_rim_runtime_resource__zh_TW.cod net_rim_bb_resource__zh_TW.cod net_rim_bb_diagnostic_resource__zh.cod net_rim_bb_diagnostic_resource__zh_TW.cod net_rim_tid_dynamic_ling_data_chinese_Wubizixing_wordlist.cod net_rim_tid_dynamic_ling_data_chinese_CN_wordlist.cod net_rim_tid_dynamic_ling_data_chinese_TW_CangJei_wordlist.cod net_rim_platform_resource__zh_CN_Pinyin.cod

保存退出

开启模拟器
选中菜单Simulate->USB cable connect

6.执行chineseinput.bat, 然后退出模拟器

7.打开8820模拟器, 进入模拟器中的设置向导进行设置, 包括中文, 中文输入

我写了个hello world 中文菜单显示正常

8.设置模拟器的sd卡使用pc文件系统
打开JDE-->EDIT-->Preferences..-->Simulator-->Memory
勾选Use PC filesystem for SD card files
在 SD Card Image 中填写你的指定目录
则模拟器中的sd卡会mount你选中的目录

Khan's Notebook 2009-02-12 15:28 发表评论

Linux 进程互斥锁

Khan's Notebook — Wed, 24 Dec 2008 02:45:00 GMT

   最开始打算用semaphore实现,

sem_t waitNonEmpty;
int empty=0;
sem_init(&waitNonEmpty, 1, empty); /*初始化信号量*/

sem_wait(&waitNonEmpty);             /*是否有"非空资源"*/
sem_post(&waitNonEmpty);              /*生成一个"非满资源"*/
sem_destroy(&waitNonEmpty);

后来在fc3 redhat7.3下man了sem_init, 第二个参数int pshared
The pshared
       argument indicates whether the semaphore is local to the current pro-
       cess ( pshared is zero) or is to be shared between several processes (
       pshared is not zero). LinuxThreads currently does not support process-
       shared semaphores, thus sem_init always returns with error ENOSYS if
       pshared is not zero.

最邪恶的现状出来了, 这俩系统没有实现sem的进程间通信, 如果设置not zero, 会返回ENOSYS的错误...
后来找了个redhat Enterprise 4 看了下文档, 貌似又支持了....

做个记号. 一会儿看看flock
fcntl 是唯一符合posix的文件锁

结构体flock的指针：

struct flcok {
short int l_type; /* 锁定的状态*/

//这三个参数用于分段对文件加锁，若对整个文件加锁，则：l_whence=SEEK_SET,l_start=0,l_len=0;
short int l_whence;/*决定l_start位置*/
off_t l_start; /*锁定区域的开头位置*/
off_t l_len; /*锁定区域的大小*/

pid_t l_pid; /*锁定动作的进程*/
};

l_type 有三种状态:
F_RDLCK 建立一个供读取用的锁定
F_WRLCK 建立一个供写入用的锁定
F_UNLCK 删除之前建立的锁定

int fcntl(int fd, int cmd, struct flock *lock);
int cmd
//F_SETLKW对加锁操作进行阻塞，
//F_SETLK不对加锁操作进行阻塞，立即返回

    当使用F_SETLK宏，不进行阻塞加锁操作时。两个进程有对文件加锁失败的情况出现。
    当使用F_SETLKW宏，进行阻塞加锁操作时。两个进程没有文件加锁失败的情况。但是根据进程的输出日志，可以明显看出A进程对文件操作时，B进程停止对文件操作。
    测试过程中打开文件使用O_RDWR | O_CREAT | O_APPEND模式，并对文件加写锁。锁对打开文件没有影响，但是对另一进程加锁和写操作有影响。
加锁对同一进程中的多线程无效。同一进程中的多线程对同一文件加锁，后加锁的线程会覆盖前一个线程加的文件锁。
fcntl文档中写到，一个进程对一个文件的区域只能加一个类型的锁

实现代码如下:
//filelock.h
#ifndef __FILE_LOCK_HPP__
#define __FILE_LOCK_HPP__

#ifdef __cplusplus
extern "C" {
#endif

int file_lock(int fd);
int file_unlock(int fd);

#ifdef __cplusplus
}
#endif

#endif //__FILE_LOCK_HPP__

------------------------华丽分割线-----------------------------
//filelock.cpp

#include
#include

#include "filelock.h";

int file_lock(int fd){
struct flock s_flock;
s_flock.l_type = F_WRLCK;

s_flock.l_whence = SEEK_SET;
s_flock.l_start = 0;
s_flock.l_len = 0;
s_flock.l_pid = getpid();

//F_SETLKW对加锁操作进行阻塞，
//F_SETLK不对加锁操作进行阻塞，立即返回
return fcntl(fd, F_SETLKW, &s_flock);
}

int file_unlock(int fd){
return fcntl(fd, F_SETLKW, F_UNLCK);
}

---------------------------------华丽的分割线--------------------------
test.cpp

#include "filelock.h"

#include
#include
#include

#include
#include
#include
#include
#include

int main(int argc,char *argv[]) {
int pid = -1;

int i = 5;
while(i--){
    if ((pid = fork()) < 0) { //fork出错
      puts("fork1 error");
    } else if (pid > 0) {//父进程
      sleep(5);

      if (waitpid(pid, NULL, 0) < 0)
        puts("waitpid error");

    } else {//子进程
      sleep(1);
      int li_file = 0;
      int li_lck_st = -1;
      li_file = open("tt.txt", O_WRONLY|O_CREAT, 0777);
      if( li_file < 0 ) {
        printf("file open error\n");
      }
      printf("li_file=[%d] pid=[%d]\n", li_file , getpid() );
      li_lck_st = file_lock(li_file);
      sleep(5);
      printf("li_lck_st=%d pid =%d\n", li_lck_st, getpid() );
      file_unlock(li_file);
      close(li_file);
      printf("close file pid=%d unlock\n", getpid());
      return 0;
    }
}
return 0;
}

------------------------------华丽分割线---------------------------
//makefile

#########################################################
#Project: test
#By: Khan.Lau
#Description: test
#########################################################

CC = gcc
CXX = g++
STRIP = strip
AR = ar

PROJ = $(shell pwd)
DLLPATH = $(shell find $(PROJ) -name *.so*)

LIBPATH = /usr

INCS = -I$(LIBPATH)/include \
    -I$(PROJ)/src/inc \
    -I$(PROJ)/src

CXXINCS = -I$(LIBPATH)/include \
    -I$(LIBPATH)/include/c++/4.3 \
    -I$(LIBPATH)/include/c++/4.3/backward \
    -I$(PROJ)/src/inc \
    -I$(PROJ)/src

CFLAGS = -g -Wall $(CXXINCS)
#
CONFIGURATION = release
#
BIN = test.exe
#LIB = lib/HuaWeiBsc.a

#包路径
LIBS = -L$(PROJ)/lib \
    -L$(LIBPATH)/lib -lz

SRCS = $(wildcard \
    src/lib/*.cpp \
    src/kernel/*.cpp)

OBJBINS = $(SRCS:.cpp=.o)

.c.o:
    $(CC) -o $@ -c $< $(CFLAGS)

.cpp.o:
    $(CXX) -o $@ -c $< $(CFLAGS)

COLORH=echo -en "\033[1;32;40m"
COLORN=echo -en "\033[m"

all : $(BIN)

$(BIN) : $(OBJBINS)
    $(CXX) -o $(CONFIGURATION)/$(BIN) $(OBJBINS) $(LIBS)
    @$(COLORN)     $(shell echo "$(BIN) build complete.")

#$(LIB) : $(OBJBINS)
#    ar rc $(LIB) $(OBJBINS)

clean :
    rm -f $(OBJBINS)
    rm -f $(BIN)

-----------------------------华丽分割线--------------------------
测试环境 ubuntu 8.10, redhat 7.3, redhat fc3 redhat enterprise 4.6
结果:
khan@khan-laptop:~/project/filelock/release$ ./test.exe
li_file=[3] pid=[10959]
li_lck_st=0 pid =10959
close file pid=10959 unlock
li_file=[3] pid=[10961]
li_lck_st=0 pid =10961
close file pid=10961 unlock
li_file=[3] pid=[10964]
li_lck_st=0 pid =10964
close file pid=10964 unlock
li_file=[3] pid=[10966]
li_lck_st=0 pid =10966
close file pid=10966 unlock
li_file=[3] pid=[10969]
li_lck_st=0 pid =10969
close file pid=10969 unlock

Khan's Notebook 2008-12-24 10:45 发表评论

linux /proc/文件系统.

Khan's Notebook — Fri, 24 Oct 2008 06:16:00 GMT

    最近要做一个jni给java来采集系统信息. 支持linux和windows
    采集的内容包括. 系统所有进程名, cpu占用率, 内存占用率, 系统内存大小, 已用内存大小, 可用内存大小, 分区大小, 已用分区磁盘空间, 可用分区磁盘空间. 系统信息. cpu核心总数..
    在windows下已经使用系统提供的api一一完成并经过调试. linux为了保证代码的统一. 也用了jni的方式

    linux下我老以为会有类似的api提供. 翻了半天google, 最终决定还是从/proc文件系统开始来.
不过/proc方式的好处就是不论哪种语言. 只要他有操作文件的能力. 都可以获得这些信息. 而不局限于c或者c++

    要点1. /proc不是物理文件系统. 他是对内存数据的映射, 是驱动留给开发者和使用者的接口, 所以不管你什么时候用ls指令也好, 用stat来读 st_size也好. 他的大小都是0字节.
    要点2. 由于是vfs, 不要试图往/proc中扔文件或者目录

    /proc目录中. 有不少信息. 我这次项目涉及到如下

    /proc/stat      //实时的系统信息, 我感兴趣的主要是cpu负载数据
    /proc/loadavg   //一段时间内 cpu负载的平均数以及最近一次的pid
    /proc/cpuinfo   //cpu信息频率核心支持特性
    /proc/version   //系统内核版本系统发行版本 gcc版本

    /proc目录下每个以数字命名的子目录都代表一个进程, 目录名则是他的pid
    /proc/(pid)/cmdline 该进程启动时的命令, 系统核心进程应该是空的
    /proc/(pid)/stat     里面记录着pid, 进程名(short_cmd)等等
    /proc/(pid)/environ 记录着系统执行的环境变量

其他的改天碰到再看吧.

Khan's Notebook 2008-10-24 14:16 发表评论

c语言（a ＜ b ＜ c ）的陷阱

Khan's Notebook — Thu, 23 Oct 2008 08:35:00 GMT

很久没有碰c/c++了, 近两年都是java为主, 偶尔用一下c/c++

(a(a
网友给我扔来了c99的标准
§6.5.9 第86页 89) The expression ameans (a
意思也就是说. (a1.( (a2.a3.所以, 最终表达式运算的是 (1
C语言中. 虽然任何不等于0的数为真. 但是实际在宏定义中 TRUE == 1 FALSE == 0;

Khan's Notebook 2008-10-23 16:35 发表评论

sourceforge又被封了...你们想让我说什么呢....

Khan's Notebook — Mon, 07 Jul 2008 15:28:00 GMT
   此贴是原创, 又不算技术, 关乎开源, 但是又无关软件...矛盾啊....
   半夜想down个mingw32... 去sourceforge.发现又上不去了. 凭直觉, 网站出问题的机会几乎没有. 开了个jondo, 果然能上去.
   上面的人又封sourceforge了.从06年LUPA事件到现在, 又开始了.
    开jondo down东西. 速度不足2k. tor速度更慢, 大家有没有什么好的工具. 这个时势没办法. 不能忍受就要学会享受.
    世道真是越来越乱了......

Khan's Notebook 2008-07-07 23:28 发表评论

VC6 与GCC-avr交叉环境配置

Khan's Notebook — Tue, 24 Jun 2008 04:05:00 GMT
01、在C:或其他盘下安装VC6.0
02、在C:或其他盘下新建ECC文件夹
03、在C:\ECC目录下安装WinAVR-20040720版
04、在C:\ECC目录下新建common文件夹
05、把lib和inc文件夹copy到C:\ECC\common目录下
06、把cl.exe; lhex.exe; link.exe; lview.exe; nmake.exe; rc.exe; sp.exe; ecc.reg; 这8个文件COPY到C:\ECC目录下
07、把EccAddin.pdb和EccAddin.dll 文件copy到VC目录下的\common\msdev98\addins 目录下
08、把GccWizard.awx 文件copy到 VC目录下的\common\msdev98\template 目录下
09、在任何目录下安装port95nt.exe
10、把avr5.x 文件copy到C:\ECC\Winavr\avr\lib\ldscripts 目录下
11、把usertype 文件copy到 VC目录下的\common\msdev98\bin 目录下
12、用记事本打开ecc.reg修改路径并保存，双击此文件添加到注册表中
13、打开VC++6.0; 在tools菜单->options->directories中将 C:\ECC\common\inc和C:\ECC\winavr\include 两个目录添加到include file选项中。同时将C:\ECC目录添加到executable files 选项中；并将之移到顶部。

SP.exe 烧录的配置自己google吧

备注:
07 把EccAddin.pdb和EccAddin.dll 文件copy到VC目录下的\common\msdev98\addins 目录下
这俩文件是自己写d

Khan's Notebook 2008-06-24 12:05 发表评论

GCC Mingw编译JNI dll要点

Khan's Notebook — Mon, 23 Jun 2008 04:57:00 GMT
本来想做一个win32平台下, 由于vc没有psapi.dll的库. 所以选择了mingw包和gcc编译器.

java部分
这里主要是申明接口. javah工具会根据你声明的接口自动生成对于的.h头文件

//SystemInfo.java
package com.khan.system;

public abstract class SystemInfo
{
    // public: ................................................................

    /**
    * A simple class to represent data snapshots taken by {@link #makeCPUUsageSnapshot}.
    */
public static final class CPUUsageSnapshot {
    public final long m_time, m_CPUTime;

      // constructor is private to ensure that makeCPUUsageSnapshot()
      // is used as the factory method for this class:
    private CPUUsageSnapshot (final long time, final long CPUTime) {
      m_time = time;
      m_CPUTime = CPUTime;
    }

} // end of nested class

    // Custom exception class for throwing
public static final class NegativeCPUTime extends Exception {}

    /**
    * Minimum time difference [in milliseconds] enforced for the inputs into
    * {@link #getProcessCPUUsage(SystemInfo.CPUUsageSnapshot,SystemInfo.CPUUsageSnapshot)}.
    * The motivation for this restriction is the fact that System.currentTimeMillis()
    * on some systems has a low resolution (e.g., 10ms on win32). The current value
    * is 100 ms.
    */
public static final int MIN_ELAPSED_TIME = 100;

    /**
    * Creates a CPU usage data snapshot by associating CPU time used with system
    * time. The resulting data can be fed into
    * {@link #getProcessCPUUsage(SystemInfo.CPUUsageSnapshot,SystemInfo.CPUUsageSnapshot)}.
    */
public static CPUUsageSnapshot makeCPUUsageSnapshot() throws SystemInfo.NegativeCPUTime {
    long prCPUTime = getProcessCPUTime ();
    if (prCPUTime<0)
      throw new NegativeCPUTime();
    return new CPUUsageSnapshot (System.currentTimeMillis (), getProcessCPUTime ());
}

    /**
    * Computes CPU usage (fraction of 1.0) between start.m_CPUTime and
    * end.m_CPUTime time points [1.0 corresponds to 100% utilization of
    * all processors].
    *
    * @throws IllegalArgumentException if start and end time points are less than
    * {@link #MIN_ELAPSED_TIME} ms apart.
    * @throws IllegalArgumentException if either argument is null;
    */
public static double getProcessCPUUsage (final CPUUsageSnapshot start, final CPUUsageSnapshot end) {
    if (start == null)
      throw new IllegalArgumentException ("null input: start");
    if (end == null)
      throw new IllegalArgumentException ("null input: end");
    if (end.m_time < start.m_time + MIN_ELAPSED_TIME)
      throw new IllegalArgumentException ("end time must be at least " + MIN_ELAPSED_TIME + " ms later than start time");

    return ((double)(end.m_CPUTime - start.m_CPUTime)) / (end.m_time - start.m_time);
}

    /**
    * Returns the PID of the current process. The result is useful when you need
    * to integrate a Java app with external tools.
    */
public static native int getProcessID ();

    /**
    * Returns the number of processors on machine
    */
public static native int getCPUs ();

    /**
    * Returns CPU (kernel + user) time used by the current process [in milliseconds].
    * The returned value is adjusted for the number of processors in the system.
    */
public static native long getProcessCPUTime ();

    /**
    * Returns CPU (kernel + user) time used by the current process [in perecents].
    * The returned value is either CPU percentage, or zero if this is not supported by OS.
    * Currently it is supported by Solaris8, and not supported by Windows XP
    */
public static native double getProcessCPUPercentage();

    /**
    * Returns maximum memory available in the system.
    */
public static native long getMaxMem ();

    /**
    * Returns current free memory in the system.
    */
public static native long getFreeMem ();

    /**
    * Returns system name info like "uname" command output
    */
public static native String getSysInfo ();

    /**
    * Returns CPU usage (fraction of 1.0) so far by the current process. This is a total
    * for all processors since the process creation time.
    */
public static native double getProcessCPUUsage ();

    /**
    * Returns current space allocated for the process, in Kbytes. Those pages may or may not be in memory.
    */
public static native long getMemoryUsage();

    /**
    * Returns current process space being resident in memory, in Kbytes.
    */
public static native long getMemoryResident();

    /**
    * Sets the system native process PID for which all measurements will be done.
    * If this method is not called then the current JVM pid will act as a default.
    * Returns the native-dependent error code, or 0 in case of success.
    */
public static native int setPid(int pid);

    /**
    * Closes native-dependent process handle, if necessary.
    */
public static native int detachProcess();

    // protected: .............................................................

    // package: ...............................................................

    // private: ...............................................................

private SystemInfo() {} // prevent subclassing

private static final String SILIB = "SystemInfo";

static {
    // loading a native lib in a static initializer ensures that it is
    // available done before any method in this class is called:
    try {
      System.loadLibrary (SILIB);
    }catch (UnsatisfiedLinkError e){
      System.out.println("native lib '" + SILIB
                         + "' not found in 'java.library.path': "
                         + System.getProperty ("java.library.path"));
    }catch (Exception e){
      System.out.println(e.getMessage());
    }
}

} // end of class

//AppMain.java 测试文件
package com.khan.system;

public class AppMain {
    /**
     * Default constructor
     */
    public AppMain() {
        // TODO: Add constructor code here
    }

    public static void main(String[] args) {
      try {
        Thread.sleep(1000);
        System.out.println("getMaxMem:" + SystemInfo.getMaxMem());
        System.out.println("getCPUs:" + SystemInfo.getCPUs());
        System.out.println("getSysInfo:" + SystemInfo.getSysInfo());
      }catch (Exception e){
        System.out.println(e.getMessage());
      }
    }

}

java部分工程文件. 等同与makefile
ant build.xml

    simple example build file





































在工程目录下ant 编译工程
build目录为本工程目标二进制文件目录. 编译后的class在此目录下
然后到build目录下
javah javah -jni com.khan.system.SystemInfo //注意, 一定要使用包全路径. 如果不是default包的话.
会在此目录下生成3个.h文件
com_khan_system_SystemInfo.h
com_khan_system_SystemInfo_CPUUsageSnapshot.h
com_khan_system_SystemInfo_NegativeCPUTime.h

java这边的准备工作完成

接下来处理c部分
新建一个c工程. 我用gcc的. 所以这些部分我手工完成的
将刚刚的.h文件实现

/* ------------------------------------------------------------------------- */
/*
* An implementation of JNI methods in com.vladium.utils.SystemInformation
* class. The author compiled it using Microsoft Visual C++ and GCC for Win32 but the code
* should be easy to use with any compiler for win32 platform.
*
* For simplicity, this implementaion assumes JNI 1.2+ and omits error handling.
*
* Enhanced by Peter V. Mikhalenko (C) 2004, Deutsche Bank [peter@mikhalenko.com]
* Original source (C) 2002, Vladimir Roubtsov [vlad@trilogy.com]
*/
/* ------------------------------------------------------------------------- */

#include
#include
#include
#include
#include
#include

#include "include/com_khan_system_SystemInfo.h"

static jint s_PID;
static HANDLE s_currentProcess;
static int alreadyDetached;
static int s_numberOfProcessors;
static SYSTEM_INFO systemInfo;
static WORD processorArchitecture;
static DWORD pageSize;
static DWORD processorType;
static WORD processorLevel;
static WORD processorRevision;

#define INFO_BUFFER_SIZE 32768
#define BUFSIZE 2048

//BOOL flll = TRUE;
/* ------------------------------------------------------------------------- */

/*
* A helper function for converting FILETIME to a LONGLONG [safe from memory
* alignment point of view].
*/
static LONGLONG fileTimeToInt64 (const FILETIME * time)
{
    ULARGE_INTEGER _time;

    _time.LowPart = time->dwLowDateTime;
    _time.HighPart = time->dwHighDateTime;

    return _time.QuadPart;
}
/* ......................................................................... */

/*
* This method was added in JNI 1.2. It is executed once before any other
* methods are called and is ostensibly for negotiating JNI spec versions, but
* can also be conveniently used for initializing variables that will not
* change throughout the lifetime of this process.
*/
JNIEXPORT jint JNICALL JNI_OnLoad (JavaVM * vm, void * reserved)
{
s_PID = _getpid ();
s_currentProcess = GetCurrentProcess ();
//externalCPUmon = 0;
alreadyDetached = 0;

GetSystemInfo (&systemInfo);
s_numberOfProcessors = systemInfo.dwNumberOfProcessors;
processorArchitecture = systemInfo.wProcessorArchitecture;
pageSize = systemInfo.dwPageSize;
processorType = systemInfo.dwProcessorType;
processorLevel = systemInfo.wProcessorLevel;
processorRevision = systemInfo.wProcessorRevision;
printf("SystemInfo.dll is Loaded");
return JNI_VERSION_1_2;
}
/* ......................................................................... */

JNIEXPORT void JNICALL
JNI_OnUnload (JavaVM * vm, void * reserved)
{
if (!alreadyDetached && s_currentProcess!=NULL) {
    CloseHandle(s_currentProcess);
    printf("[JNI Unload] Detached from native process.");
    fflush(stdout);
}
printf("SystemInfo.dll is UnLoaded");
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getCPUs
* Signature: ()I
*/
JNIEXPORT jint JNICALL Java_com_khan_system_SystemInfo_getCPUs(JNIEnv * env, jclass cls)
{
    return (jint)s_numberOfProcessors;
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getProcessID
* Signature: ()I
*/
JNIEXPORT jint JNICALL
Java_com_khan_system_SystemInfo_getProcessID(JNIEnv * env, jclass cls)
{
    return s_PID;
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    setPid
* Signature: ()I
*/
JNIEXPORT jint JNICALL
Java_com_khan_system_SystemInfo_setPid(JNIEnv * env, jclass cls, jint pid)
{
    DWORD errCode;
    LPVOID lpMsgBuf;
    s_PID = pid;
    s_currentProcess = OpenProcess(PROCESS_ALL_ACCESS,FALSE,pid);
    if (s_currentProcess==NULL) {
     errCode = GetLastError();
     FormatMessage(
              FORMAT_MESSAGE_ALLOCATE_BUFFER |
              FORMAT_MESSAGE_FROM_SYSTEM,
              NULL,
              errCode,
              MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
              (LPTSTR) &lpMsgBuf,
              0, NULL );

     printf("[CPUmon] Could not attach to native process. Error code: %ld Error description: %s", errCode, (char *)lpMsgBuf);
     fflush(stdout);
     LocalFree(lpMsgBuf);
     return errCode;
    }
    printf("[CPUmon] Attached to native process.");
    fflush(stdout);
    return 0;
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    detachProcess
* Signature: ()I
*/
JNIEXPORT jint JNICALL
Java_com_khan_system_SystemInfo_detachProcess(JNIEnv * env, jclass cls)
{
    if (!alreadyDetached && s_currentProcess!=NULL) {
     CloseHandle(s_currentProcess);
     alreadyDetached = 1;
     printf("[CPUmon] Detached from native process.");
     fflush(stdout);
    }
    return 0;
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getProcessCPUTime
* Signature: ()J
*/
JNIEXPORT jlong JNICALL
Java_com_khan_system_SystemInfo_getProcessCPUTime (JNIEnv * env, jclass cls)
{
    FILETIME creationTime, exitTime, kernelTime, userTime;
    DWORD errCode;
    LPVOID lpMsgBuf;

    BOOL resultSuccessful = GetProcessTimes (s_currentProcess, & creationTime, & exitTime, & kernelTime, & userTime);
    if (!resultSuccessful) {
     errCode = GetLastError();
     FormatMessage(
              FORMAT_MESSAGE_ALLOCATE_BUFFER |
              FORMAT_MESSAGE_FROM_SYSTEM,
              NULL,
              errCode,
              MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
              (LPTSTR) &lpMsgBuf,
              0, NULL );

     printf("[CPUmon] An error occured while trying to get CPU time. Error code: %ld Error description: %s", errCode, (char *)lpMsgBuf);

     fflush(stdout);
     LocalFree(lpMsgBuf);
     return -1;
    }

    return (jlong) ((fileTimeToInt64 (& kernelTime) + fileTimeToInt64 (& userTime)) /
        (s_numberOfProcessors * 10000));
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getMaxMem
* Signature: ()J
*/
JNIEXPORT jlong JNICALL
Java_com_khan_system_SystemInfo_getMaxMem(JNIEnv * env, jclass cls)
{
MEMORYSTATUS stat;
GlobalMemoryStatus (&stat);
        return (jlong)(stat.dwTotalPhys/1024);
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getFreeMem
* Signature: ()J
*/
JNIEXPORT jlong JNICALL
Java_com_khan_system_SystemInfo_getFreeMem (JNIEnv * env, jclass cls)
{
        MEMORYSTATUS stat;
GlobalMemoryStatus (&stat);
        return (jlong)(stat.dwAvailPhys/1024);
}
/* ......................................................................... */

/* define min elapsed time (in units of 10E-7 sec): */
#define MIN_ELAPSED_TIME (10000)

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getProcessCPUUsage
* Signature: ()D
*/
JNIEXPORT jdouble JNICALL
Java_com_khan_system_SystemInfo_getProcessCPUUsage(JNIEnv * env, jclass cls)
{
    FILETIME creationTime, exitTime, kernelTime, userTime, nowTime;
    LONGLONG elapsedTime;
    DWORD errCode;
    LPVOID lpMsgBuf;

    BOOL resultSuccessful = GetProcessTimes (s_currentProcess, & creationTime, & exitTime, & kernelTime, & userTime);
    if (!resultSuccessful) {
     errCode = GetLastError();
     FormatMessage(
              FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
              NULL,
              errCode,
              MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
              (LPTSTR) &lpMsgBuf,
              0, NULL );

     printf("[CPUmon] An error occured while trying to get CPU time. Error code: %ld Error description: %s", errCode, (char *)lpMsgBuf);
     fflush(stdout);
     LocalFree(lpMsgBuf);
     return -1.0;
    }
    GetSystemTimeAsFileTime (& nowTime);

    /*
        NOTE: win32 system time is not very precise [~10ms resolution], use
        sufficiently long sampling intervals if you make use of this method.
    */

    elapsedTime = fileTimeToInt64 (& nowTime) - fileTimeToInt64 (& creationTime);

    if (elapsedTime < MIN_ELAPSED_TIME)
        return 0.0;
    else
        return ((jdouble) (fileTimeToInt64 (& kernelTime) + fileTimeToInt64 (& userTime))) /
            (s_numberOfProcessors * elapsedTime);
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getProcessCPUPercentage
* Signature: ()D
*/
JNIEXPORT jdouble JNICALL
Java_com_khan_system_SystemInfo_getProcessCPUPercentage (JNIEnv * env, jclass cls)
{
// Not implemented on Windows
        return (jdouble)(-1.0);
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getMemoryUsage
* Signature: ()J
*/
JNIEXPORT jlong JNICALL
Java_com_khan_system_SystemInfo_getMemoryUsage (JNIEnv * env, jclass cls)
{
    PROCESS_MEMORY_COUNTERS pmc;

    if ( GetProcessMemoryInfo( s_currentProcess, &pmc, sizeof(pmc)) )
    {
return (jlong)(pmc.PagefileUsage/1024);
    } else {
return (jlong)(0);
    }
}
/* ......................................................................... */

/*
* Class:     com_vladium_utils_SystemInformation
* Method: getMemoryResident * Signature: ()J
*/
JNIEXPORT jlong JNICALL
Java_com_khan_system_SystemInfo_getMemoryResident(JNIEnv * env, jclass cls)
{
    PROCESS_MEMORY_COUNTERS pmc;

    if ( GetProcessMemoryInfo( s_currentProcess, &pmc, sizeof(pmc)) )
    {
        return (jlong)(pmc.WorkingSetSize/1024);
    } else {
         return (jlong)(0);
    }
}

/*
* Class:     com_vladium_utils_SystemInformation
* Method:    getSysInfo
* Signature: ()S
*/
JNIEXPORT jstring JNICALL
Java_com_khan_system_SystemInfo_getSysInfo(JNIEnv * env, jclass cls)
{
char buf[2048];
char buf2[512];
jstring retval;
OSVERSIONINFOEX osvi;
BOOL bOsVersionInfoEx;
TCHAR infoBuf[INFO_BUFFER_SIZE];

DWORD bufCharCount = INFO_BUFFER_SIZE;
*buf = 0; //c语言. 变量定义所有代码在前
*buf2 = 0;
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
if( !(bOsVersionInfoEx = GetVersionEx ((OSVERSIONINFO *) &osvi)) )
{
    osvi.dwOSVersionInfoSize = sizeof (OSVERSIONINFO);
    if (! GetVersionEx ( (OSVERSIONINFO *) &osvi) ) {
      // Return empty string in case of problems
      goto next_label;
    }
}

switch (osvi.dwPlatformId)
{
    // Test for the Windows NT product family.
    case VER_PLATFORM_WIN32_NT:

      // Test for the specific product.
      if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 2 )
        strcat(buf,"WinServer2003, ");

      if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 1 )
        strcat(buf,"WinXP ");

      if ( osvi.dwMajorVersion == 5 && osvi.dwMinorVersion == 0 )
        strcat(buf,"Win2K ");

      if ( osvi.dwMajorVersion <= 4 )
        strcat(buf,"WinNT ");

      // Display service pack (if any) and build number.

      if( osvi.dwMajorVersion == 4 && lstrcmpi( osvi.szCSDVersion, "Service Pack 6" ) == 0 )
      {
        HKEY hKey;
        LONG lRet;

        // Test for SP6 versus SP6a.
        lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE, "SOFTWAREMicrosoftWindows NTCurrentVersionHotfixQ246009", 0, KEY_QUERY_VALUE, &hKey );
        if( lRet == ERROR_SUCCESS ) {
          sprintf(buf2, "SP 6a (Build %d), ", (int)(osvi.dwBuildNumber & 0xFFFF) );
          strcat(buf,buf2);
        }
        else // Windows NT 4.0 prior to SP6a
        {
          sprintf(buf2, "%s (Build %d), ",
          osvi.szCSDVersion,
          (int)(osvi.dwBuildNumber & 0xFFFF));
          strcat(buf,buf2);
        }

        RegCloseKey( hKey );
      }
      else // not Windows NT 4.0
      {
        sprintf(buf2, "%s (Build %d), ", osvi.szCSDVersion, (int)(osvi.dwBuildNumber & 0xFFFF));
        strcat(buf,buf2);
      }
      break;

      // Test for the Windows Me/98/95.
    case VER_PLATFORM_WIN32_WINDOWS:
      if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)
      {
        strcat(buf,"Win95 ");
        if ( osvi.szCSDVersion[1] == 'C' || osvi.szCSDVersion[1] == 'B' )
          strcat(buf,"OSR2 " );
      }

      if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 10)
      {
        strcat(buf,"Win98 ");
        if ( osvi.szCSDVersion[1] == 'A' )
          strcat(buf,"SE " );
      }

      if (osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 90)
      {
        strcat(buf,"WinME ");
      }
      break;

    case VER_PLATFORM_WIN32s:
      strcat(buf,"Win32s ");
      break;
}

next_label:

strcat(buf,"on ");
// Get and display the name of the computer.
bufCharCount = INFO_BUFFER_SIZE;
if( !GetComputerName( infoBuf, &bufCharCount ) )
    goto next_label_2;
strcat(buf, infoBuf );

next_label_2:
strcat(buf," (");
if (!(osvi.dwPlatformId==VER_PLATFORM_WIN32_WINDOWS && osvi.dwMajorVersion == 4 && osvi.dwMinorVersion == 0)) {
    // Win95 does not keep CPU info in registry
    LONG lRet;
    HKEY hKey;
    char szOrigCPUType[BUFSIZE];
    int i=0;
    DWORD dwBufLen=BUFSIZE;
    lRet = RegOpenKeyEx( HKEY_LOCAL_MACHINE, "HARDWAREDESCRIPTIONSystemCentralProcessor", 0, KEY_QUERY_VALUE, &hKey );
    if( lRet != ERROR_SUCCESS ) {
      goto next_label_3;
    }

    lRet = RegQueryValueEx( hKey, "ProcessorNameString", NULL, NULL, (LPBYTE) szOrigCPUType, &dwBufLen);
    if( (lRet != ERROR_SUCCESS) || (dwBufLen > BUFSIZE) ) {
      goto next_label_3;
    }
    RegCloseKey( hKey );

    if (strlen(szOrigCPUType)>0) {
      while(szOrigCPUType[i]==' ' && szOrigCPUType[i]!=0)
        i++;

      strcat(buf,szOrigCPUType+i);
    } else
      goto next_label_3;
} else {
next_label_3:
   if (processorArchitecture==PROCESSOR_ARCHITECTURE_UNKNOWN)
        strcat(buf,"unknown_arch");
   else if (processorArchitecture==PROCESSOR_ARCHITECTURE_INTEL) {
     strcat(buf,"Intel ");
     sprintf(buf2,"level %d ",processorLevel);
     strcat(buf,buf2);
   } else if (processorArchitecture==PROCESSOR_ARCHITECTURE_IA64)
        strcat(buf,"IA64 ");
   else if (processorArchitecture==PROCESSOR_ARCHITECTURE_MIPS)
        strcat(buf,"MIPS ");
   else if (processorArchitecture==PROCESSOR_ARCHITECTURE_ALPHA)
        strcat(buf,"Alpha ");
   else if (processorArchitecture==PROCESSOR_ARCHITECTURE_PPC)
        strcat(buf,"PowerPC ");
   else if (processorArchitecture==PROCESSOR_ARCHITECTURE_SHX)
        strcat(buf,"SHX ");
   else if (processorArchitecture==PROCESSOR_ARCHITECTURE_ALPHA64)
        strcat(buf,"Alpha64 ");
   else
        strcat(buf,"unknown_arch ");
}

strcat(buf,")");

retval = (*env)->NewStringUTF(env,buf);
return retval;
}
/* ......................................................................... */

#undef MIN_ELAPSED_TIME

/* ------------------------------------------------------------------------- */
/* end of file */

编写makefile
#    Project: SystemInfo
#    Makefile created by Khan.Lau
#    Write    by 2007-05-16

#    应用程序名
#LIB = SystemInfo.a
DLL =    SystemInfo.dll
#BIN = SystemInfo.exe

#    输出目录
#    CONFIGURATION = debug
CONFIGURATION    =    release

#    取得项目的当前工作路径
PROJECT_PATH = "D:/Project/Cplus/SystemInfo/src"

CPP = g++
CC = gcc
COMPILER = $(CC)

#    c/c++库路径
LIBPATH = "D:/Develop/CPlus/MinGW/lib"

WINDRES = windres.exe
RES =

#    包路径
LIBS = -L$(LIBPATH) \
    -lpsapi

INCS = -I$(LIBPATH)/include \
    -ID:/Develop/Java/jdk1.5.0_02/include \
    -ID:/Develop/Java/jdk1.5.0_02/include/win32 \
    -I$(PROJECT_PATH)

CXXINCS = -I$(LIBPATH)/include \
    -I$(LIBPATH)/include/c++/3.2.3 \
    -I$(LIBPATH)/include/c++/3.2.3/backward \
    -I$(LIBPATH)/include/c++/3.2.3/mingw32 \
    -I$(PROJECT_PATH)

DLLFLAGS = -DBUILD_DLL
CXXFLAGS = $(DLLFLAGS) -g -Wall $(CXXINCS)
CFLAGS = $(DLLFLAGS) -Wall $(INCS)

COMPILER_FLAG = $(CFLAGS)

RM = rm -f

LINKOBJ = $(CONFIGURATION)/SystemInfo.o    \
                $(RES)

.PHONY:    all all-before all-after clean clean-custom rebuild

all: all-before $(DLL) all-after

clean: clean-custom
    ${RM} $(LINKOBJ) $(CONFIGURATION)/$(DLL)

$(LIB): $(LINKOBJ)
    ar -r $(CONFIGURATION)/$(LIB) $(LINKOBJ)

$(DLL): $(LINKOBJ)
        $(COMPILER) -shared -Wl,--add-stdcall-alias -o $(CONFIGURATION)/$(DLL) $(LINKOBJ) $(LIBS)

$(BIN):    $(LINKOBJ)
    $(COMPILER) -o $(CONFIGURATION)/$(BIN) $(LINKOBJ) $(LIBS)

#缩减可执行文件大小
strip:
    strip    $(CONFIGURATION)/$(LIB)

################################################################################

$(CONFIGURATION)/SystemInfo.o: src/dll/SystemInfo.c
    $(COMPILER) -c src/dll/SystemInfo.c -o $(CONFIGURATION)/SystemInfo.o $(COMPILER_FLAG)

################################################################################

rebuild: clean    all

makefile中注意
$(DLL): $(LINKOBJ)
        $(COMPILER) -shared -Wl,--add-stdcall-alias -o $(CONFIGURATION)/$(DLL) $(LINKOBJ) $(LIBS)

-shared -Wl,--add-stdcall-alias 这3个参数是一定要的. 具体含义请参阅gcc帮助..
否则会出现如下异常:java.lang.UnsatisfiedLinkError
如果你确认自己的dll名没有错. loadlibrary的名字也没有填错. 那应该就要检查如上部分了

实际发布的时候. 不要使用调试版本. 也就是编译参数不能有-g

ok, 现在make出dll使用吧....

我本地测试的输出结果为 :

getMaxMem:506604
getCPUs:1
getSysInfo:WinXP Service Pack 2 (Build 2600), on A7648944D08843B (Intel level 15 )
SystemInfo.dll is Loaded

Khan's Notebook 2008-06-23 12:57 发表评论

ubuntu 下安装wine

Khan's Notebook — Fri, 23 May 2008 15:18:00 GMT
编译源码的方式就不写了，无非就是解决依赖关系， down一堆的包，然后make
简单粗暴的来......

1.安装
sudo apt-get install wine

2.初始化
winecfg //不要用root模式, 也就是不要用sudo

如果出现以下警告或者错误:
preloader: Warning: failed to reserve range 00000000-60000000
err:dosmem:setup_dos_mem Cannot use first megabyte for DOS address space, please report

解决方法: 其实我不清楚为什么要这么做....唉.....
sudo sysctl -w vm.mmap_min_addr=0

然后打开sysctl.conf
sudo gedit /etc/sysctl.conf

#vm.mmap_min_addr = 65536 //注释掉这行
vm.mmap_min_addr = 0 //改为这行

3、设置中文问题

   先把字体simsun.ttc（在你的windows的安装目录里的font文件夹里找，找不到可以从网上下到）复制到 /home/你的用户名/.wine/drive_c/windows/fonts 文件夹中，要显示隐藏文件夹按Ctrl+H

修改注册表，在命令行输入 gedit ~/.wine/system.reg

找到“[System\\CurrentControlSet\\Hardware Profiles\\Current\\Software\\Fonts]”，将其中的““LogPixels”=dword:00000060”改成 ““LogPixels”=dword:00000070“。

再找到”[Software\\Microsoft\\Windows NT\\CurrentVersion\\FontSubstitutes] xxxx“项，将其中的”MS Shell Dlg“相关的两项修改成如下内容（即更换字体为宋体）：

“MS Shell Dlg”=”SimSun”
“MS Shell Dlg 2″=”SimSun”

然后：gedit ~/.wine/drive_c/windows/win.ini

在其中加上（如果没有），有的话修改成如下

[Desktop]
menufontsize=13
messagefontsize=13
statusfontsize=13
IconTitleSize=13

现在中文显示应该正常了

Khan's Notebook 2008-05-23 23:18 发表评论