• Anuj Goyal <Anuj_member pathlink.com> Jun 22 2004
• Arjan Knepper <arjan ask.me> Jun 23 2004
• Anuj Goyal <Anuj_member pathlink.com> Jun 23 2004
• Arjan Knepper <arjan ask.me> Jun 24 2004
• Anuj Goyal <Anuj_member pathlink.com> Jun 25 2004
• Mark Junker <mjscod gmx.de> Jun 25 2004
• Anuj Goyal <Anuj_member pathlink.com> Jun 25 2004
• Mark Junker <mjscod gmx.de> Jun 26 2004
• Anuj Goyal <Anuj_member pathlink.com> Jun 26 2004

used dmc to build win32-pthread (http://sources.redhat.com/pthreads-win32/). it
compiles and links wihtout problems, however, I get runtime error for a very
simple program.  I want to use win32-pthread because it is very similar to
pthread on unix and my code becomes a LOT more portable (see below).  I have a
feeling I compiled | linked the pthread library incorrectly that is why I am
getting the error.  Unfortunately I can not make a smaller test case because it
includes the entire pthread library that I built (from the link above).


/* This is the error that I got in a popup window. */

unknown has generated errors and will be closed by Windows
You will need to restart the program

An error log is being created





/* hello.c
* dmc -I.;c:dminclude -WA -v2 hello.c pthread.lib
*/
#ifdef(_WIN32)
#include "pthread.h"
#else /* POSIX-like */
#include <pthread.h>
#endif 

#include <stdio.h>

#define NUM_THREADS	5

void *sayhello(void *threadid)
{
printf("\n%d: Hello World!\n", threadid);
pthread_exit(NULL);
return;
}

int main(int argc, char *argv[])
{
pthread_t threads[NUM_THREADS];
int rc, t;
for(t=0;t<NUM_THREADS;t++){
printf("Creating thread %d\n", t);
rc = pthread_create(&threads[t], NULL, sayhello, (void *)t);
if (rc){
printf("ERROR; return code from pthread_create() is %d\n", rc);
/* exit(-1); */
}
}
pthread_exit(NULL);

}

Anuj Goyal

On which line in the sample app does you application cause the error?

Arjan

Anuj Goyal wrote:

 used dmc to build win32-pthread (http://sources.redhat.com/pthreads-win32/). it
 compiles and links wihtout problems, however, I get runtime error for a very
 simple program.  I want to use win32-pthread because it is very similar to
 pthread on unix and my code becomes a LOT more portable (see below).  I have a
 feeling I compiled | linked the pthread library incorrectly that is why I am
 getting the error.  Unfortunately I can not make a smaller test case because it
 includes the entire pthread library that I built (from the link above).
 
 
 /* This is the error that I got in a popup window. */
 
 unknown has generated errors and will be closed by Windows
 You will need to restart the program
 
 An error log is being created
 
 
 
 
 
 /* hello.c
 * dmc -I.;c:dminclude -WA -v2 hello.c pthread.lib
 */
 #ifdef(_WIN32)
 #include "pthread.h"
 #else /* POSIX-like */
 #include <pthread.h>
 #endif 
 
 #include <stdio.h>
 
 #define NUM_THREADS	5
 
 void *sayhello(void *threadid)
 {
 printf("\n%d: Hello World!\n", threadid);
 pthread_exit(NULL);
 return;
 }
 
 int main(int argc, char *argv[])
 {
 pthread_t threads[NUM_THREADS];
 int rc, t;
 for(t=0;t<NUM_THREADS;t++){
 printf("Creating thread %d\n", t);
 rc = pthread_create(&threads[t], NULL, sayhello, (void *)t);
 if (rc){
 printf("ERROR; return code from pthread_create() is %d\n", rc);
 /* exit(-1); */
 }
 }
 pthread_exit(NULL);
 
 }
 
 Anuj Goyal

on this line:

rc = pthread_create(&threads[t], NULL, sayhello, (void *)t);

feel free to contact me off list, I can show you how I compiled the pthread
lib/dll.  

I did the compile,link in one swooop ...did the download from here
ftp://sources.redhat.com/pub/pthreads-win32 and get this file
ftp://sources.redhat.com/pub/pthreads-win32/pthreads-2004-06-22.exe

after unzip, goto the pthreads dir:

dmc -I.;c:\dm\include -D_MT -DHAVE_CONFIG_H -WD pthread.c
user32.lib+kernel32.lib+wsock32.lib -L/impl

rem _MT is needed to pick up _beginthread() in c:\dm\include\process.h
rem i dunno why wsock32.lib is needed!

I read your page:
http://www.arjanknepper.com/Programming/C++/C++.html

does everything on this page still hold true? MS has a reasonably standards
compliant compiler VS.NET 2005 (still slower than digital mars) but I think they
are giving away their compiler for free these days (at least VS.NET 2003 is free
off the web)

I really like dmc, but I wish there were more examples of how to use it.

In article <cbbahi$23un$1 digitaldaemon.com>, Arjan Knepper says...
On which line in the sample app does you application cause the error?

Arjan

Anuj Goyal wrote:

 used dmc to build win32-pthread (http://sources.redhat.com/pthreads-win32/). it
 compiles and links wihtout problems, however, I get runtime error for a very
 simple program.  I want to use win32-pthread because it is very similar to
 pthread on unix and my code becomes a LOT more portable (see below).  I have a
 feeling I compiled | linked the pthread library incorrectly that is why I am
 getting the error.  Unfortunately I can not make a smaller test case because it
 includes the entire pthread library that I built (from the link above).
 
 
 /* This is the error that I got in a popup window. */
 
 unknown has generated errors and will be closed by Windows
 You will need to restart the program
 
 An error log is being created
 
 
 
 
 
 /* hello.c
 * dmc -I.;c:dminclude -WA -v2 hello.c pthread.lib
 */
 #ifdef(_WIN32)
 #include "pthread.h"
 #else /* POSIX-like */
 #include <pthread.h>
 #endif 
 
 #include <stdio.h>
 
 #define NUM_THREADS	5
 
 void *sayhello(void *threadid)
 {
 printf("\n%d: Hello World!\n", threadid);
 pthread_exit(NULL);
 return;
 }
 
 int main(int argc, char *argv[])
 {
 pthread_t threads[NUM_THREADS];
 int rc, t;
 for(t=0;t<NUM_THREADS;t++){
 printf("Creating thread %d\n", t);
 rc = pthread_create(&threads[t], NULL, sayhello, (void *)t);
 if (rc){
 printf("ERROR; return code from pthread_create() is %d\n", rc);
 /* exit(-1); */
 }
 }
 pthread_exit(NULL);
 
 }
 
 Anuj Goyal

Anuj Goyal wrote:
 on this line:
 
 rc = pthread_create(&threads[t], NULL, sayhello, (void *)t);


I quickly glanced over the extracted tree and red a few docs.
Are you aware of the fact you have to choose between the several 
"Exception Handling" methodes?
- MS Structured Exception Handling
- c++ Exception Handling
- c setjmp/longjmp

Did you also looked through the config.h file and verified the #defines 
are also appropriate for DMC?

 I read your page:
 http://www.arjanknepper.com/Programming/C++/C++.html
 
 does everything on this page still hold true?


No it doesn't the page is a little outdated and it is originally written 
by my brother Jan.

 I really like dmc, but I wish there were more examples of how to use it.


What kind of examples are you looking for?

yup, I choose c setjmp/longjmp and also modified config.h

I can post my changes if you are interested, just a few lines.

In article <cbe3lc$bml$1 digitaldaemon.com>, Arjan Knepper says...
Anuj Goyal wrote:
 on this line:
 
 rc = pthread_create(&threads[t], NULL, sayhello, (void *)t);


I quickly glanced over the extracted tree and red a few docs.
Are you aware of the fact you have to choose between the several 
"Exception Handling" methodes?
- MS Structured Exception Handling
- c++ Exception Handling
- c setjmp/longjmp

Did you also looked through the config.h file and verified the #defines 
are also appropriate for DMC?

 I read your page:
 http://www.arjanknepper.com/Programming/C++/C++.html
 
 does everything on this page still hold true?


No it doesn't the page is a little outdated and it is originally written 
by my brother Jan.

 I really like dmc, but I wish there were more examples of how to use it.


What kind of examples are you looking for?

Anuj Goyal schrieb:
 used dmc to build win32-pthread (http://sources.redhat.com/pthreads-win32/). it
 compiles and links wihtout problems, however, I get runtime error for a very
 simple program.  I want to use win32-pthread because it is very similar to
 pthread on unix and my code becomes a LOT more portable (see below).  I have a
 feeling I compiled | linked the pthread library incorrectly that is why I am
 getting the error.  Unfortunately I can not make a smaller test case because it
 includes the entire pthread library that I built (from the link above).


[..]

 pthread_t threads[NUM_THREADS];


[..]

Maybe a problem with the structure alignment.

Many library make files specify the structure alignment on the compilers 
command line instead of using "#pragma pack(..)" in the header files.

Had this kind of problems very often with Borland C++ Builder 4 ... 
especially because the structure alignment in the project files for 
console and GUI applications are different!

Currently, I use GCC only and I'm glad to see that it hasn't a compiler 
switch for that stuff ...

Regards,
Mark

These are the changes I made to config.h (for win32-pthread), I added these
lines before the last "#endif"

#ifdef __DMC__
/*#define HAVE_SIGSET_T // DMC seems to define sigset_t for M_XENIX and M_UNIX
only */
#define HAVE_SIGNAL_H
#define HAVE_C_INLINE
/*#define HAVE_MODE_T // DMC seems to define mode_t for M_XENIX and M_UNIX only
*/
#endif //__DMC__


There are some other minor changes as well.  I have attached them.  (mostly
adding or checking for __DMC__)

Anuj Goyal schrieb:

 These are the changes I made to config.h (for win32-pthread), I added these
 lines before the last "#endif"


Uhm, what I meant was: Was dmc called with an argument like -a1, -a2,
-a4, or -a8.

I currently don't know what the default structure alignment for dmc is,
but it's probably different from what is specified in the arguments.

Regards,
Mark Junker

hmm you're right, I tried compiling with -a8 and still got the same error
message after trying it out on my small "hello.exe" (after the relink of course)


structs in the pthread-win32 code.

implement.h   (15)

C:\workdmc\pthread>grep "^struct" imp*.h
struct pthread_t_
struct pthread_attr_t_
struct sem_t_
struct pthread_mutex_t_
struct pthread_mutexattr_t_
struct pthread_spinlock_t_
struct pthread_barrier_t_
struct pthread_barrierattr_t_
struct pthread_key_t_
struct ThreadParms
struct pthread_cond_t_
struct pthread_condattr_t_
struct pthread_rwlock_t_
struct pthread_rwlockattr_t_
struct ThreadKeyAssoc

pthread.h    (3)

C:\workdmc\pthread>grep "^struct" p*.h
struct timespec {
struct pthread_once_t_
struct ptw32_cleanup_t


sched.h      (1) struct sched_param

C:\workdmc\pthread>grep "^struct" sc*.h
struct sched_param {

Uhm, what I meant was: Was dmc called with an argument like -a1, -a2,
-a4, or -a8.

I currently don't know what the default structure alignment for dmc is,
but it's probably different from what is specified in the arguments.
Mark Junker