Hi,

Could anyone help me in solving this problem please...

Thanks
Chepurthy S.


--- In ace-users@y..., chepurthy soma <chepurthys@y...> wrote:

ACE VERSION: 5.2

HOST MACHINE and OPERATING SYSTEM:
Sun Netra, Solaris.

TARGET MACHINE and OPERATING SYSTEM, if different from HOST:
COMPILER NAME AND VERSION (AND PATCHLEVEL):

CONTENTS OF $ACE_ROOT/ace/config.h:

/* -*- C++ -*- */
// config-sunos5.8.h,v 4.3 2001/07/24 21:58:43 joeh Exp

// The following configuration file is designed to work for SunOS 5.8
// (Solaris 8) platforms using the SunC++ 4.x, 5.x, 6.x, or g++
compilers.

#ifndef ACE_CONFIG_H

// ACE_CONFIG_H is defined by one of the following #included headers.

// #include the SunOS 5.7 config, then add any SunOS 5.8 updates
below.
#include "ace/config-sunos5.7.h"

// The range of thread priorities for 5.8 differs from 5.7 in the
// minimum priority for the SCHED_OTHER policy (i.e.,
// ACE_THR_PRI_OTHER_MIN)
# define ACE_THR_PRI_OTHER_MIN (long) -20

# if defined (_POSIX_PTHREAD_SEMANTICS)
# ifdef ACE_LACKS_RWLOCK_T
# undef ACE_LACKS_RWLOCK_T
# endif /* ACE_LACKS_RWLOCK_T */
# endif /* _POSIX_PTHREAD_SEMANTICS */

#endif /* ACE_CONFIG_H */


CONTENTS OF $ACE_ROOT/include/makeinclude/platform_macros.GNU
(unless
this isn't used in this case, e.g., with Microsoft Visual C++):

# platform_sunos5_g++.GNU,v 4.46 2001/07/24 15:09:30 oci Exp

# SunOS 5.x (Solaris 2.x) with g++ *not* using Orbix

# NOTE: with g++ 2.8.0, you'll need to disable optimization in order
to
# instantiate ACE_Map_Manager (ace/Map_Manager.cpp). The
easiest
# way to do that is to set "optimize = 0", either below or on
# your make command line.

# NOTE: On Solaris86, you'll need to use GNU as instead
of /usr/ccs/bin/as,
# if you want -gstabs+ and -pipe support.
#repo=1

ACE_HAS_GNUG_PRE_2_8 := \
$(shell \
if $(CXX) --version | egrep '^(cygnus-)?2\.[0-7]' > /dev/null;
then \
echo 1; else echo 0; fi)

ifeq (,$(debug))
debug = 1
endif
ifeq (,$(optimize))
optimize = 1
endif
ifeq (,$(threads))
threads = 1
endif

ifeq ($(threads),0)
CFLAGS += -DACE_MT_SAFE=0
endif # threads

ifeq (,$(exceptions))
exceptions = 0
endif
# if we are not working with old gcc ...
ifeq ($(ACE_HAS_GNUG_PRE_2_8),0)
ifeq ($(exceptions),0)
CFLAGS += -fno-exceptions
endif # exceptions
endif # ! ACE_HAS_GNUG_PRE_2_8

ifeq ($(shell /bin/uname -m),i86pc)
#### gcc on Solaris86 doesn't use -g
DCFLAGS += -gstabs+
else # ! i86pc
DCFLAGS += -g
endif # ! i86pc

CC = gcc
CXX = g++
CFLAGS += -W -Wall -Wpointer-arith -pipe #### -Winline
#CCFLAGS += $(CFLAGS) -fno-implicit-templates
CCFLAGS += $(CFLAGS) #### without no-implicit-templates
DLD = $(CXX)
LD = $(CXX)
LDFLAGS +=
LIBS += -lsocket -ldl -lgen -lnsl -lposix4 -lthread
OCFLAGS += -O3
PIC = -fPIC
AR = ar
ARFLAGS = ruv
RANLIB = @true
SOFLAGS = -G $(CPPFLAGS)
SOBUILD = $(COMPILE.cc) $(PIC) -o $(VSHDIR)$*.so $<
PRELIB = @true

PLATFORM_X11_CPPFLAGS= -I/usr/openwin/include -I/usr/dt/include
PLATFORM_X11_LIBS =-lX11
PLATFORM_X11_LDFLAGS=

## Unfortunately, gcc 3.0 fails to many cpp files with
## optimization enabled. Even -O causes the compiler
## to core dump on some files.
ifeq ($(shell $(CXX) --version),3.0)
override optimize = 0
endif




AREA/CLASS/EXAMPLE AFFECTED:

USing ACE_Reactor::instance->handle_events();
DOES THE PROBLEM AFFECT:
COMPILATION?
LINKING?
On Unix systems, did you run make realclean first?
EXECUTION?

Yes, Execution failed.
OTHER (please specify)?


[Please indicate whether ACE, your application, or both are affected.]

My Application is affected.

SYNOPSIS:
[Brief description of the problem]

Error in using ACE_Reactor::instance()->handle_events() for both
signal handling and as a connector.

DESCRIPTION:

The logic I used is as follows:

class MyEventHandler : public ACE_Event_Handler

{

public:

int handle_signal(int signum, siginfo_t*,ucontext_t*)

{

switch(signum)

{

case SIGINT:

//!< Do cleanup….

exit(0);

case SIGUSR1:

//!< Do something….

……

default:

break;

}

return 0;

}

};

void signalHandler()

{

ACE_Reactor::instance()->handle_events();

}

int main()

{

MyEventHandler *eh = new MyEventHandler; // Instantiate the handler

//!< Register the signal handler

ACE_Reactor::instance()->register_handler(SIGINT,eh);

ACE_Reactor::instance()->register_handler(SIGTERM,eh);

ACE_Reactor::instance()->register_handler(SIGUSR1,eh);

//!< Spawn a thread for signal handler.

ACE_Thread_Manager::instance()->spawn_n(1,

(ACE_THR_FUNC)signalHandler,

0,THR_NEW_LWP,

ACE_DEFAULT_THREAD_PRIORITY, 0);

Call EMSClient(); // This is a method called from a different
library, which is explained below.

// Wait for all the tasks to exit.

ACE_Thread_Manager::instance()->wait();

return 0;

}


/*

This is a client library which acts like a connector and does the
following:

Initialization of data

Registers to EMS Server.

Waits for events continuously from EMS Server.

EMSClient()

{

//!< Initialization stuff

………

//!< Register a handler.

ACE_INET_Addr local_addr(_emsinfocurrent.emsc_port);

if(emsc_addr.set(local_addr) != 0)

{

cout << "error occored"<<endl;

return -1;

}

cout <<"Registering endpoint " << endl;

ACE_NEW_RETURN (emscon_endpoint_, EMSconnector (emsc_addr),-1);

if (ACE_Reactor::instance ()->register_handler (emscon_endpoint_,

ACE_Event_Handler::READ_MASK) == -1)

{

cout << "Registering Handle failed "<<endl;

ACE_ERROR_RETURN ((LM_ERROR, "ACE_Reactor::register_handler"), -1);

}

else

cout <<" Handler Registered Successfully to "<<
_emsinfocurrent.emsc_port<<endl;;

//!< Spawns a thread to call handle_events method of ACE_Reactor.

ACE_Thread_Manager::instance()->spawn_n(1,

(ACE_THR_FUNC)eventHandler,

(void *)structsbuff,

THR_NEW_LWP,

ACE_DEFAULT_THREAD_PRIORITY,0);


//!< Do something else….

}

EventHandler() // This method waits in a loop for handling events.

{

while(1)

{

if ((errors=ACE_Reactor::instance ()->handle_events ()) <= 0)

{

cout <<" recv_handler:: ERROR "<<errors<<endl;

return errors;

}

}

cout <<" recv_handler:: EVENT received"<<endl;

return 0;

}




When I run the above logic, Signal handler registration in main
program is successful, but handle_events is failing with return code –
1. I am not able to understand the reason for this. If I move the
registration of signal handler code in main program below EMSClient()
method, then registration is successful and handle events is
receiving data correctly. But Since I do a lot of things in my main
before calling EMSClient(), I need to register signal handler and
start it before going to EMSClient… Moreover I cannot use the
handle_signal method in EMSClient, because there is a lot of cleanup
in main code which cannot be done in EMSClient. Please suggest me a
way to solve this problem.
REPEAT BY:
[What you did to get the error; include test program or session
transcript if at all possible. ]

SAMPLE FIX/WORKAROUND:
[If available ]





Thanks

Chepurthy S.


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