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Date: Sat, 13 Oct 2001 04:00:52 -0700
From: Aj Lavin <aj AT haightmail DOT org>
To: cygwin AT cygwin DOT com
Subject: 1.3.3-2: Standard out writes fail after cygwin generated dll loaded
Message-ID: <20011013040052.A5293@zappa>
Mime-Version: 1.0
Content-Type: multipart/mixed; boundary="YiEDa0DAkWCtVeE4"
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--YiEDa0DAkWCtVeE4
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I used cygwin 1.3.3-2 under Windows 2000 to create a JNI dll which I
then loaded in a java Application. 

When run in a DOS shell, the java Application succeeds in writing to
standard output up until the point when the dll is loaded. All
subsequent writes give no output. Also, no errors were reported by the
Sun JVM 1.3, even with -verbose.

When run in the Cygwin shell, the java Application works. The
application continues to write to standard output after the dll is
loaded.

I believe this error is related to the report "Standard streams closed
when g++-produced DLL loaded"
(http://gcc.gnu.org/ml/gcc-prs/2001-07/msg00739.html) which was made
by lerios at cs dot stanford dot edu.

All the relevant files are attached.

Regards,

A.j.

--YiEDa0DAkWCtVeE4
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment; filename="cygcheck.out"


Cygnus Win95/NT Configuration Diagnostics
Current System Time: Sat Oct 13 03:23:38 2001

WinNT Ver 5.0 build 2195 Service Pack 2

Path:	/C/DJGPP/BIN
	/C/WINNT/system32
	/C/WINNT
	/C/WINNT/System32/Wbem
	/C/Program Files/Dell/Resolution Assistant/Common/bin
	/C/jdk1.3/bin
	/usr/bin

SysDir: C:\WINNT\System32
WinDir: C:\WINNT


!C: = `C:\JavaWork'
!EXITCODE = `00000000'
ALLUSERSPROFILE = `C:\Documents and Settings\All Users'
APPDATA = `C:\Documents and Settings\Kara Elmquist\Application Data'
CLASSPATH = `.;C:\jdk1.3\lib\tools.jar;C:\Tomcat3.2.3\lib\servlet.jar'
COMMONPROGRAMFILES = `C:\Program Files\Common Files'
COMPUTERNAME = `YT'
COMSPEC = `C:\WINNT\system32\cmd.exe'
DJGPP = `C:\DJGPP\DJGPP.ENV'
HOMEDRIVE = `C:'
HOMEPATH = `\'
JAVA_HOME = `C:\jdk1.3'
LOGONSERVER = `\\YT'
NUMBER_OF_PROCESSORS = `1'
OS = `Windows_NT'
OS2LIBPATH = `C:\WINNT\system32\os2\dll;'
PATHEXT = `.COM;.EXE;.BAT;.CMD;.VBS;.VBE;.JS;.JSE;.WSF;.WSH'
PROCESSOR_ARCHITECTURE = `x86'
PROCESSOR_IDENTIFIER = `x86 Family 6 Model 8 Stepping 6, GenuineIntel'
PROCESSOR_LEVEL = `6'
PROCESSOR_REVISION = `0806'
PROGRAMFILES = `C:\Program Files'
PROMPT = `$P$G'
SYSTEMDRIVE = `C:'
SYSTEMROOT = `C:\WINNT'
TEMP = `/C/DOCUME~1/KARAEL~1/LOCALS~1/Temp'
TMP = `/C/DOCUME~1/KARAEL~1/LOCALS~1/Temp'
TOMCAT_HOME = `C:\Tomcat3.2.3'
USERDOMAIN = `YT'
USERNAME = `Kara Elmquist'
USERPROFILE = `C:\Documents and Settings\Kara Elmquist'
WINDIR = `C:\WINNT'
TERM = `cygwin'
TZ = `PST8PDT7,M4.1.0/2,M10.5.0/2'

HKEY_CURRENT_USER\Software\Cygnus Solutions
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2
  (default) = `/cygdrive'
  cygdrive flags = 0x00000022
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\mounts v2\/C
  (default) = `C:'
  flags = 0x00000000
HKEY_CURRENT_USER\Software\Cygnus Solutions\Cygwin\Program Options
HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\MenuOrder\Start Menu\Programs\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/
  (default) = `C:/cygwin'
  flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/bin
  (default) = `C:/cygwin/bin'
  flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\mounts v2\/usr/lib
  (default) = `C:/cygwin/lib'
  flags = 0x0000000a
HKEY_LOCAL_MACHINE\SOFTWARE\Cygnus Solutions\Cygwin\Program Options

a:  fd  FAT        1Mb  11% CP    UN           
c:  hd  FAT32   9772Mb  31% CP    UN           
d:  cd           N/A    N/A                    

C:\cygwin\bin  /usr/bin  system  binmode
C:\cygwin\lib  /usr/lib  system  binmode
C:\cygwin  /        system  binmode
C:    /C       user    textmode

Found: C:\cygwin\bin\bash.exe
Found: C:\cygwin\bin\cat.exe
Found: C:\cygwin\bin\cpp.exe
Found: C:\cygwin\bin\find.exe
Found: C:\cygwin\bin\gcc.exe
Found: C:\cygwin\bin\gdb.exe
Found: C:\cygwin\bin\ld.exe
Found: C:\cygwin\bin\ls.exe
Found: C:\cygwin\bin\make.exe
Found: C:\cygwin\bin\sh.exe

  701k 2001/10/13 .\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2001/9/12 20:54
    Cygwin DLL version info:
        dll major: 1003
        dll minor: 3
        dll epoch: 19
        dll bad signal mask: 19005
        dll old termios: 5
        dll malloc env: 28
        api major: 0
        api minor: 46
        shared data: 3
        dll identifier: cygwin1
        mount registry: 2
        cygnus registry name: Cygnus Solutions
        cygwin registry name: Cygwin
        program options name: Program Options
        cygwin mount registry name: mounts v2
        cygdrive flags: cygdrive flags
        cygdrive prefix: cygdrive prefix
        cygdrive default prefix: 
        build date: Wed Sep 12 23:54:31 EDT 2001
        shared id: cygwin1S3

  701k 2001/10/13 .\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2001/9/12 20:54
    Cygwin DLL version info:
        dll major: 1003
        dll minor: 3
        dll epoch: 19
        dll bad signal mask: 19005
        dll old termios: 5
        dll malloc env: 28
        api major: 0
        api minor: 46
        shared data: 3
        dll identifier: cygwin1
        mount registry: 2
        cygnus registry name: Cygnus Solutions
        cygwin registry name: Cygwin
        program options name: Program Options
        cygwin mount registry name: mounts v2
        cygdrive flags: cygdrive flags
        cygdrive prefix: cygdrive prefix
        cygdrive default prefix: 
        build date: Wed Sep 12 23:54:31 EDT 2001
        shared id: cygwin1S3

   56k 2000/12/03 C:\cygwin\bin\cygbz21.0.dll - os=4.0 img=1.0 sys=4.0
                  "cygbz21.0.dll" v0.0 ts=2000/11/20 15:53
   18k 2000/10/23 C:\cygwin\bin\cyggdbm.dll - os=4.0 img=1.0 sys=4.0
                  "cyggdbm.dll" v0.0 ts=2000/10/22 19:26
   21k 2001/06/20 C:\cygwin\bin\cygintl.dll - os=4.0 img=1.0 sys=4.0
                  "cygintl.dll" v0.0 ts=2001/6/20 10:09
   45k 2001/07/04 C:\cygwin\bin\cygjbig1.dll - os=4.0 img=1.0 sys=4.0
                  "cygjbig1.dll" v0.0 ts=2001/7/3 20:25
  119k 2001/06/06 C:\cygwin\bin\cygjpeg6b.dll - os=4.0 img=1.0 sys=4.0
                  "cygjpeg6b.dll" v0.0 ts=2001/6/5 21:27
   45k 2001/04/25 C:\cygwin\bin\cygform5.dll - os=4.0 img=1.0 sys=4.0
                  "cygform5.dll" v0.0 ts=2001/4/24 22:28
   26k 2001/04/25 C:\cygwin\bin\cygmenu5.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu5.dll" v0.0 ts=2001/4/24 22:27
  156k 2001/04/25 C:\cygwin\bin\cygncurses++5.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++5.dll" v0.0 ts=2001/4/24 22:29
  226k 2001/04/25 C:\cygwin\bin\cygncurses5.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses5.dll" v0.0 ts=2001/4/24 22:17
   15k 2001/04/25 C:\cygwin\bin\cygpanel5.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel5.dll" v0.0 ts=2001/4/24 22:27
   34k 2001/09/30 C:\cygwin\bin\cygform6.dll - os=4.0 img=1.0 sys=4.0
                  "cygform6.dll" v0.0 ts=2001/9/29 19:43
   19k 2001/09/30 C:\cygwin\bin\cygmenu6.dll - os=4.0 img=1.0 sys=4.0
                  "cygmenu6.dll" v0.0 ts=2001/9/29 19:43
  175k 2001/09/30 C:\cygwin\bin\cygncurses++6.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses++6.dll" v0.0 ts=2001/9/29 19:45
  201k 2001/09/30 C:\cygwin\bin\cygncurses6.dll - os=4.0 img=1.0 sys=4.0
                  "cygncurses6.dll" v0.0 ts=2001/9/29 19:42
   12k 2001/09/30 C:\cygwin\bin\cygpanel6.dll - os=4.0 img=1.0 sys=4.0
                  "cygpanel6.dll" v0.0 ts=2001/9/29 19:43
  163k 2001/05/06 C:\cygwin\bin\cygpng2.dll - os=4.0 img=1.0 sys=4.0
                  "cygpng2.dll" v0.0 ts=2001/5/5 21:05
   17k 2001/06/28 C:\cygwin\bin\cyghistory4.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory4.dll" v0.0 ts=2001/1/6 20:34
   21k 2001/06/28 C:\cygwin\bin\cyghistory5.dll - os=4.0 img=1.0 sys=4.0
                  "cyghistory5.dll" v0.0 ts=2001/6/27 19:27
  108k 2001/06/28 C:\cygwin\bin\cygreadline4.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline4.dll" v0.0 ts=2001/1/6 20:34
  135k 2001/06/28 C:\cygwin\bin\cygreadline5.dll - os=4.0 img=1.0 sys=4.0
                  "cygreadline5.dll" v0.0 ts=2001/6/27 19:27
   81k 2000/12/05 C:\cygwin\bin\cygitcl30.dll - os=4.0 img=1.0 sys=4.0
                  "cygitcl30.dll" v0.0 ts=2000/11/25 17:43
   35k 2000/12/05 C:\cygwin\bin\cygitk30.dll - os=4.0 img=1.0 sys=4.0
                  "cygitk30.dll" v0.0 ts=2000/11/25 17:43
  390k 2000/12/05 C:\cygwin\bin\cygtcl80.dll - os=4.0 img=1.0 sys=4.0
                  "cygtcl80.dll" v0.0 ts=2000/11/25 17:39
    5k 2000/12/05 C:\cygwin\bin\cygtclpip80.dll - os=4.0 img=1.0 sys=4.0
   10k 2000/12/05 C:\cygwin\bin\cygtclreg80.dll - os=4.0 img=1.0 sys=4.0
                  "cygtclreg80.dll" v0.0 ts=2000/11/25 17:39
  623k 2000/12/05 C:\cygwin\bin\cygtk80.dll - os=4.0 img=1.0 sys=4.0
                  "cygtk80.dll" v0.0 ts=2000/11/25 17:43
  245k 2001/06/12 C:\cygwin\bin\cygtiff3.dll - os=4.0 img=1.0 sys=4.0
                  "cygtiff3.dll" v0.0 ts=2001/6/12 10:25
   41k 2001/07/04 C:\cygwin\bin\cygXpm-noX4.dll - os=4.0 img=1.0 sys=4.0
                  "cygXpm-noX4.dll" v0.0 ts=2001/7/3 18:21
   45k 2001/07/04 C:\cygwin\bin\cygXpm-X4.dll - os=4.0 img=1.0 sys=4.0
                  "cygXpm-X4.dll" v0.0 ts=2000/11/19 18:45
   49k 2001/02/03 C:\cygwin\bin\cygz.dll - os=4.0 img=1.0 sys=4.0
                  "cygz.dll" v0.0 ts=2001/2/3 12:35
  701k 2001/09/13 C:\cygwin\bin\cygwin1.dll - os=4.0 img=1.0 sys=4.0
                  "cygwin1.dll" v0.0 ts=2001/9/12 20:54
    Cygwin DLL version info:
        dll major: 1003
        dll minor: 3
        dll epoch: 19
        dll bad signal mask: 19005
        dll old termios: 5
        dll malloc env: 28
        api major: 0
        api minor: 46
        shared data: 3
        dll identifier: cygwin1
        mount registry: 2
        cygnus registry name: Cygnus Solutions
        cygwin registry name: Cygwin
        program options name: Program Options
        cygwin mount registry name: mounts v2
        cygdrive flags: cygdrive flags
        cygdrive prefix: cygdrive prefix
        cygdrive default prefix: 
        build date: Wed Sep 12 23:54:31 EDT 2001
        shared id: cygwin1S3

Use -h to see help about each section

--YiEDa0DAkWCtVeE4
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment; filename=Makefile

#
# Sample makefile to create Java JNI with Cygwin b20.1 tools. This *will not*
# work with Cygwin versions earlier than b20.1.
# 
# The only difference from creating a regular DLL is to supply a different
# entry point, __cygwin_noncygwin_dll_entry AT 12, since Java is an MSVC app.
#
# See Makefile.nocyg if you want to use -mno-cygwin and build a Mingw JNI.
#

CC = gcc 
CXX = c++

DEBUG = -g -Wall -O2
CXXFLAGS = $(DEBUG) 
CFLAGS = $(DEBUG) 
CPPFLAGS = -I. -I$(JDK_ROOT)/include -I$(JDK_ROOT)/include/win32

JDK_ROOT = c:/jdk1.3

AS = as
DLLTOOL = dlltool
DLLWRAP = dllwrap

#
# Various targets to build.
#
DLL_NAME = Summation.dll
DLL_EXP_DEF = Summation.def

all: $(DLL_NAME)

#
# DLL related variables. These are used when building the DLL. See later.
#

# Some tools require special CPP macros when building a DLL (eg., _DLL etc).
# Here we don't need anything.

DLL_CFLAGS = -DBUILDING_DLL=1 -D_DLL=1 

# The default entry point defined by dllwrap is __cygwin_dll_entry AT 12 
# defined in libcygwin.a, but that's only appropriate for Cygwin apps,
# but since Java is a MSVC app, we need to provide a different entry
# point. Note the leading underscore and the trailing @12.
# The -s flag strips the DLL to shrink the size.

DLL_LDFLAGS = -Wl,-e,__cygwin_noncygwin_dll_entry AT 12 -s

# any extra libraries that your DLL may depend on.
DLL_LDLIBS = 

DLL_SRCS  = Summation.cc
DLL_OBJS  = $(DLL_SRCS:.cc=.o)
DLL_OBJS := $(DLL_OBJS:.c=.o)

###
#
# Making DLL
#
###

DLLWRAP_FLAGS = --output-def $(DLL_EXP_DEF) \
	--add-stdcall-alias \
	--driver-name $(CC) \
	$(IMAGE_BASE)

$(DLL_NAME): $(DLL_OBJS)
	$(DLLWRAP) $(DLLWRAP_FLAGS) -o $(DLL_NAME) \
	    $(DLL_OBJS) $(DLL_LDFLAGS) $(DLL_LDLIBS)

#
# dependencies.
#

#
# default rules for building DLL objects. Note that client programs (ie.,
# the ones that *use* the DLL) have to be compiled without the DLL_CFLAGS
# flags.
#
.cc.o:
	$(CXX) -c $(DLL_CFLAGS) $(CPPFLAGS) $(CXXFLAGS) -o $@ $<
.c.o:
	$(CC) -c $(DLL_CFLAGS) $(CPPFLAGS) $(CFLAGS) -o $@ $<

# Note that we omit the $(DLL_CFLAGS) for client programs.
usedll.o: %o: %c
	$(CC) -c $(CPPFLAGS) $(CFLAGS) -o $@ $<

clean:
	-rm -f $(OBJS) $(DLL_OBJS) $(DLL_NAME) $(DLL_EXP_LIB) $(DLL_EXP_DEF) $(TESTPROGS)


--YiEDa0DAkWCtVeE4
Content-Type: text/x-csrc; charset=us-ascii
Content-Disposition: attachment; filename="Summation.c"

// PROGRAM:		Summation.c
// PROGRAMMER:	Kara Elmquist
// DATE:		2001/10/12
// PURPOSE:		Sum integers from 1 to X

#include <jni.h>
#include "Summation.h"


JNIEXPORT jdouble JNICALL Java_Summation_summation_1C
	(JNIEnv *env, jobject obj, jlong X)
{
	/*Sum integers from 1 to X*/

	double i;
	double sum;

	for(i=1,sum=0; i<=X; i++)
	{
		sum = sum + i;
	}

	return sum;
}

--YiEDa0DAkWCtVeE4
Content-Type: text/plain; charset=us-ascii
Content-Disposition: attachment; filename="Summation.def"

; dlltool --base-file /C/DOCUME~1/KARAEL~1/LOCALS~1/Temp/cc001148.base --output-exp Summation.exp --dllname Summation.dll --output-def Summation.def --add-stdcall-alias --exclude-symbol=_cygwin_dll_entry AT 12 --def /C/DOCUME~1/KARAEL~1/LOCALS~1/Temp/cc001148.def
EXPORTS
	Java_Summation_summation_1C = Java_Summation_summation_1C AT 16 @ 1 ; 
	Java_Summation_summation_1C AT 16 @ 2 ; 

--YiEDa0DAkWCtVeE4
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--YiEDa0DAkWCtVeE4
Content-Type: text/x-chdr; charset=us-ascii
Content-Disposition: attachment; filename="Summation.h"

/* DO NOT EDIT THIS FILE - it is machine generated */
#include <jni.h>
/* Header for class Summation */

#ifndef _Included_Summation
#define _Included_Summation
#ifdef __cplusplus
extern "C" {
#endif
/* Inaccessible static: theSummation */
/*
 * Class:     Summation
 * Method:    summation_C
 * Signature: (J)D
 */
JNIEXPORT jdouble JNICALL Java_Summation_summation_1C
  (JNIEnv *, jobject, jlong);

#ifdef __cplusplus
}
#endif
#endif

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// PROGRAM:		Summation.java
// PROGRAMMER:	Kara Elmquist
// DATE:		2001/10/12
// PURPOSE:		Sum integers from 1 to X

public class Summation
{
	private static Summation theSummation = new Summation();

    public native double summation_C(long X);

    public double summation(long X)
    {
		double i;
		double sum;

		for(i=1,sum=0; i<=X; i++)
		{
			sum = sum + i;
		}

		return sum;
	}

	public void run(long[] testNumbers)
	{
		System.out.println("Java Function Results:");

		Timer clock = new Timer();	//A timer

		for(int i=0;i<testNumbers.length;i++)
		{
			double sumToNum = testNumbers[i];
			//function will sum from 1 to this number

			clock.start();
			double total = summation(testNumbers[i]);
			clock.stop();
			System.out.println("Sum from 1 to " + sumToNum + "= " +
								total);
			System.out.println("Time: " + clock.elapsed() + "secs");
			clock.clear();
		}

		System.out.println("C Function Results:");

		for(int i=0;i<testNumbers.length;i++)
		{
			double sumToNum = testNumbers[i];
			//function will sum from 1 to this number

			clock.start();
			double total = summation_C(testNumbers[i]);
			clock.stop();
			System.out.println("Sum from 1 to " + sumToNum + "= " +
								total);
			System.out.println("Time: " + clock.elapsed() + "secs");
			clock.clear();
		}
	}

    static
    {
    		System.out.println( "Before load summation\n");
			 System.loadLibrary("Summation");
    		System.out.println( "after load Summation\n");
	}

    public static void main(String[] args)
    {
		double result;
		long[] testNums = {100, 1000, 10000, 100000, 1000000};

		System.out.println( "Before run\n");

		theSummation.run(testNums);

		System.out.println( "Done!\n");
	}

}


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