Analog ManualResetEvent in Java

class ManualResetEvent {

  private final Object monitor = new Object();
  private volatile boolean open = false;

  public ManualResetEvent(boolean open) {
    this.open = open;
  }

  public void waitOne() throws InterruptedException {
    synchronized (monitor) {
      while (open==false) {
          monitor.wait();
      }
    }
  }

  public void set() {//open start
    synchronized (monitor) {
      open = true;
      monitor.notifyAll();
    }
  }

  public void reset() {//close stop
    open = false;
  }
}

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ManualResetEvent alternative in Java

can not jdk uninstall Error 1723

for uninstall jdk

if you can not uninstall jdk update 16
1) install jdk update 15
2) create folder jdk1.6.0_16 and copy files from jdk1.6.0_15 to jdk1.6.0_16
in C:\Program Files (x86)\Java
3) install jdk 16 , it will remove old version of jdk 16

How to do dynamic loops For

Problem is
How to realize dynamic for-loops in source code

Visual Sudio solution you can dowload here

like this

for(int i = 0 ; i < 10 ; i++)
  for(int j = 0 ; j < 4 ; j++)
   for(int k = 0 ; k< 9 ; k++)
     ...........................
        ........................
          Console.Write( i , j , k ....)

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for this task i create class ManyFor

it simple to use (see ManyForTest)
ManyFor class generate all combination of i , j , k , ....

Example:

      int[] mm = new int[] { 3, 2, 4 };

      ManyFor mf = new ManyFor(mm);

      for (int s = 0; s < mf.Count(); s++)
      {
        ReadOnlyCollection<int> r = mf.Get(s);

        int i = r[0], j = r[1], k = r[2];

        Console.WriteLine(i + " " + j + " " + k);
      }

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OUTPUT :

0 0 0
0 0 1
0 0 2
0 0 3
0 1 0
0 1 1
0 1 2
0 1 3
1 0 0
1 0 1
1 0 2
1 0 3
1 1 0
1 1 1
1 1 2
1 1 3
2 0 0
2 0 1
2 0 2
2 0 3
2 1 0
2 1 1
2 1 2
2 1 3

// CLASS

  class ManyFor
  {
    readonly int[] id;    // all zero : 0 0 0 0 0 0
    readonly int[] max;   //     : 5 2 1 6 9 1
    readonly int[] div;

    int numberIteration = 1;
    int N;

    public ManyFor(int[] max)
    {
      
      N = max.Length;

      this.max = new int[N];
      id = new int[N];
      div = new int[N];

      for (int i = N - 1; i >= 0; i--)
      {
        if (max[i] < 0)
          throw new ArgumentOutOfRangeException("max", " must be >= 0 ");

        div[i] = numberIteration;
        this.max[i] = max[i];
        checked
        {
          numberIteration *= max[i];
        }
      }

      if (N == 0) numberIteration = 0;
    }

    public int Count()
    {
      return numberIteration;
    }

    public ReadOnlyCollection<int> Get(int n)
    {
      if (n < 0 || n >= numberIteration)
        throw new ArgumentOutOfRangeException("n", " n < 0 || n >= numberIteration n = " + n);

      for (int i = 0; i < N; i++)
      {
        id[i] = n / div[i];
        n -= id[i] * div[i];
      }

      return Array.AsReadOnly(id);
    }
  }

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//=========Class For Big Iterations=================================================

    private string GetString(int[] max )
    {
      m = new ManyForBig(max);

      StringBuilder s0 = new StringBuilder("");
      for (ReadOnlyCollection<int> r = m.Next(); r != null; r = m.Next())
        for (int j = 0; j < r.Count; j++)
          s0.Append(r[j]);

      return s0.ToString();
    }

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//=======================================================================

class ManyForBig
{
  readonly int[] id;    // all zero : 0 0 0 0 0 0
  readonly int[] max;   //     : 5 2 1 6 9 1

  private bool getFirst;
  private int N;


  private int index;  //  0 <= index < N

  public ManyForBig(int[] max)
  {

    N = max.Length;

    this.max = (new List<int>(max)).ToArray();
    id = new int[N];

    index = N - 1;
    getFirst = true;


    if (N == 0) index = -1;

    foreach (int i in max)
    {
      if (i < 0) throw new ArgumentOutOfRangeException("Error ManyFor i< 0");

      if (i == 0)
      {
        index = -1;
        break;
      }
    }
  }

  public ReadOnlyCollection<int> Next()
  {
    if (index == -1) return null;

    if (getFirst)
    {
      getFirst = false;
      return Array.AsReadOnly(id);
    }
    else if (id[index] + 1 == max[index])
    {

      for (; index >= 0 && id[index] + 1 == max[index]; index--)
      { }

      if (index == -1) return null; //end

      id[index]++;

      for (int i = index + 1; i < N; i++)
        id[i] = 0;

      index = N - 1;
    }
    else
    {
      id[index]++;
    }

    return Array.AsReadOnly(id);
  }
}

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//=========================================================

tags:
Many number of for-loops , Quesiton about nesting for loops, A generator for any number of for loop ,

Math parse expressions. c# java

PS math parser .net , Math expression parser, Mathematical Expression Parser , .Net Math Parser, mathematical expression parsing

easy to use use and modify ( add functions , add your objects and so on)

If you can parse math expressions like this

5*4+3*7+8/3+abs(10-15 ) + max( 100 , 11, 1 ) + min ( 4 , 2) + X +X*X + ......

Visual studio solution you can download here http://stream.ifolder.ru/12757267
http://rapidshare.com/files/276525245/MathParse__1_.zip





1) generate list of tokens , where one token is object
2) create tree of tokens
3) create IValue object of math expression

1)
token is

  public class Token
  {
    public List<Token> tokens;
    public IValue ivalue;

    public string type;   
    public string value;  
    public string parseInfo;
  }

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2) 5+max(1 ,2 ) = INT ACTION FUNCTION

  public interface IValue
  {
    int Value( int x );
  }

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3)

public class INT : IValue
  {
    int i;

    public int I
    {
      set { i = value; }
      get { return i; }
    }

    public INT(int i)
    {
      this.i = i;
    }

    public int Value( int x )
    {
      return i;
    }
  }


  public class VARIABLE : IValue
  {
    public int Value( int x )
    {
      return x;
    }
  }

  class ACTION : IValue
  {
    public string action;
    public IValue v0;
    public IValue v1;

    public ACTION(IValue value0, string action, IValue value1)
    {
      this.v0 = value0;
      this.v1 = value1;
      this.action = string.Intern(action);
    }

    public int Value(int x)
    {
      switch (action)
      {
        case "&&":

          if (v0.Value(x) == 0) return 0;
          if (v1.Value(x) == 0) return 0;

          return 1;
        case "||":

          if (v0.Value(x) != 0) return 1;
          if (v1.Value(x) != 0) return 1;

          return 0;
      }

      int i0 = v0.Value(x);
      int i1 = v1.Value(x);

      switch (action)
      {
        case "+":
          return i0 + i1;
        case "-":
          return i0 - i1;
        case "*":
          return i0 * i1;
        case "/":
          return i0 / i1;
        case "%":
          return i0 % i1;

        case "<":
          return i0 < i1 ? 1 : 0;
        case ">":
          return i0 > i1 ? 1 : 0;
        case "<=":
          return i0 <= i1 ? 1 : 0;
        case ">=":
          return i0 >= i1 ? 1 : 0;
        case "==":
          return i0 == i1 ? 1 : 0;
        case "!=":
          return i0 != i1 ? 1 : 0;
      }

      throw new Exception("dsqwertyds");

    }

  }

  class FUNCTION : IValue
  {
    public List<IValue> value;
    public string nameFunction;

    public FUNCTION(string nameFunction, List<IValue> value)
    {
      this.nameFunction = string.Intern(nameFunction);
      this.value = value;
    }

    public int Value( int x)
    {
      int xx;

      switch (nameFunction)
      {
        case "max":

          if (value.Count == 0) throw new Exception("ERROR : function max dont have argument");

          xx = int.MinValue;
          int[] ii = new int[value.Count];

          for (int j = 0; j < value.Count; j++)
          {
            int a = ii[j] = value[j].Value(x);
            if (a > xx) xx = a;
          }
          return xx;
        case "min":

          if (value.Count == 0) throw new Exception("ERROR : function min dont have argument");

          xx = int.MaxValue;
          int[] iii = new int[value.Count];

          for (int j = 0; j < value.Count; j++)
          {
            int a = iii[j] = value[j].Value(x);
            if (a < xx) xx = a;
          }

          return xx;
        case "abs":

          if (value.Count != 1) throw new Exception("ERROR : function abs dont have argument");

          xx = value[0].Value(x);



          return (xx < 0) ? -xx : xx;
      }

      throw new Exception("function not exist : " + nameFunction);

    }

  }

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Compile memcached windows (Cygwin) (all tests passed !!!)

Memcached win32 32 bit you can download from here
all tests from folder "t" passed ,

but in libevent test

Simple DNS resolve: [Timed out] FAILED
IPv6 DNS resolve: [Timed out] SKIPPED
Simple reverse DNS resolve: [Timed out] FAILED

//==============================================================
if you want install youself

1) you need
http://win6.jp/Cygwin/cygwin-1.5.25-15-ipv6-0.22.zip
http://monkey.org/~provos/libevent-1.4.9-stable.tar.gz
http://www.danga.com/memcached/dist/memcached-1.2.6.tar.gz

2) unpack cygwin-1.5.25-15-ipv6-0.22.zip - into you cygwin folder
about this files read site http://win6.jp/Cygwin/

3) in libevent http.c file add line ---> #define EAI_SYSTEM 11
now install libevent
./configure
make
make install

4) in memcached.c file add 3 lines --->

#define AI_PASSIVE 0x0020

#define AI_ADDRCONFIG 0x0001

#define EAI_SYSTEM 11

now install memcached

5) i run all tests and all tests passed !!!!!!! (unlike mamcached compile in visual studio )

Compile memcached-1.2.6 under windows Visual Studio 2005 (use Jellycan Code )

1) i use files from http://code.jellycan.com/memcached/
get memcached-1.2.6-win32-bin.zip
libevent
2) need folder memcached and libevent put together

/src/libevent
/src/memcached

and event-config.h (from \libevent\WIN32-Code ) copy to "/src/libevent"
and in memcached properties VS2005 add
Additional Include Directiories - ../../libevent/
3) now you can compile memcached ,
4) all files here , VS2005 solution
http://stream.ifolder.ru/10219356

5) exe here - http://stream.ifolder.ru/10219544

TESTS (Cygwin)
1) if you have cygwin
you can test memcached , in folder "t" you have test perl files ,
for run test , open cygwin shell

form cygwin_lib_perl.rar - unpack to cygwin folder
OR install cygwin_Cache-Memcached-1.24.tar.gz and cygwin_String-CRC32-1.4.tar.gz

2)you can run test separately test like this
>perl udp.t
and you can run run_all_tests.bat and view *.txt fils
you will see like this


3) you see that tests

stats.t
incrdecr.t
64bit.t

FILED !!! i dont know why !!!
who have linux or unix , all tests passed ???

Compile libevent-1.4.9-stable under windows Visual Studio 2005

Compile libevent-1.4.9-stable under windows Visual Studio 2005

0) if you want get now solution go 7) ( and 6))
1) I take file "event-config.h" from http://code.jellycan.com/memcached/ - libevent-1.4.4-stable-win32.zip
2) copy event-config.h to ---> ...\libevent-1.4.9-stable\WIN32-Code
delete event-config.h from ---> ...\libevent-1.4.9-stable
3) now you can open ...\libevent-1.4.9-stable\WIN32-Prj\libevent.sln
and compile it
4) i write

#define exit(i) printf(" _____exit(%d) - hidden _____\n", i);

in file regress_dns.c
and write in function "main" before "return (0)"

printf("End tests ...");
while(1);

5) now you run regress project and will see like this



6)!!! you can see

Simple DNS resolve: [Timed out] FAILED

i dont know why this error !!!
7) now here the all source and solution for Visual Studio 2005
open ...\libevent-1.4.9-stable\WIN32-Prj\libevent.sln

http://stream.ifolder.ru/10217927

compile and run regress test
8) libevent64.lib - libevent for 64 bit windows
libevent32.lib - libevent for 32 bit windows

http://stream.ifolder.ru/10217387