Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
Hi to all I have made separate display connection to Xserver for each thread but this is working fine sometimes not always .sometime it fail when i invoke the dialog . can anybody help me to resolve this issues . Thanks Each call to XOpenDisplay opens a new communication socket to the X-server. Commands sent through this socket need to be serialized. If you have two threads trying to send data at the same time through the same socket they will corrupt each other's data. XInitThreads enables a lock around the Xlib code that accesses the socket so that only one thread can send data through the socket at a time. This generally works fine except that if you pause one thread while it is in Xlib and has already taken the lock, it will prevent any other thread from entering Xlib and taking the lock. Separate display connections for each thread are the solution to that. Mark. On Wed, 1 Feb 2006 [EMAIL PROTECTED] wrote: Hi u have given a good suggestion but I dont understand if the pausing thread block any other thread trying to use the Xlib with the same display connection then why it is working fine sometimes . Thanks Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 [EMAIL PROTECTED] wrote: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
Hi
Thanks for quick reply. I have did according to ur suggestion
call to XOpenDisplay for the new thread .
But again it is working fine sometime . This is code, that I have
did .
*dpause (void *arg)
{
display = XOpenDisplay ( 0 );
pausem *paused_dialog = new pausem (0,dpause);//here fails
paused_dialog-show();
}
pause()
{
int rc = pthread_create( thread5, attr, dpause, NULL );
rc= pthread_join(thread5 ,thr_retval ) ;
while (pause_rec == 0 )
{
sleep(1);
}
if(pause_rec==1) {
XCloseDisplay (display);
pthread_exit(thread5 ) ;
}
}
plz give some suggestion to solve this problem .
Thanks
What do you mean by separate display connections ?
The case is this :
I mean a display connection returned by XOpenDisplay.
Right. I think what Carsten is saying is, if you might need to pause a
thread in the middle of Xlib, then that thread needs to make its own
call to XOpenDisplay, so that it has its own connection, separate from
the rest of the application.
--
Tim Roberts, [EMAIL PROTECTED]
Providenza Boekelheide, Inc.
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Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
Each call to XOpenDisplay opens a new communication socket to the X-server. Commands sent through this socket need to be serialized. If you have two threads trying to send data at the same time through the same socket they will corrupt each other's data. XInitThreads enables a lock around the Xlib code that accesses the socket so that only one thread can send data through the socket at a time. This generally works fine except that if you pause one thread while it is in Xlib and has already taken the lock, it will prevent any other thread from entering Xlib and taking the lock. Separate display connections for each thread are the solution to that. Mark. On Wed, 1 Feb 2006 [EMAIL PROTECTED] wrote: Hi u have given a good suggestion but I dont understand if the pausing thread block any other thread trying to use the Xlib with the same display connection then why it is working fine sometimes . Thanks Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 [EMAIL PROTECTED] wrote: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
Hi thanks for replying quickly What do you mean by separate display connections ? The case is this : I mean a display connection returned by XOpenDisplay. Thanks u have given a good suggestion but I dont understand if the pausing thread block any other thread trying to use the Xlib with the same display connection then why it is working fine sometimes . Thanks that's life debugging and problems with threads. mostly you might be lucky and the threads don't clash and it HAPPENS to work - by sheer luck. when they do clash you end up with these weird problems that happen sometimes - ie concurrency/locking issues. Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 [EMAIL PROTECTED] wrote: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel -- - Codito, ergo sum - I code, therefore I am -- The Rasterman (Carsten Haitzler)[EMAIL PROTECTED] $BMg9%B?(B Tokyo, Japan ($BEl5~(B $BF|K\(B) ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
[EMAIL PROTECTED] wrote: What do you mean by separate display connections ? The case is this : I mean a display connection returned by XOpenDisplay. Right. I think what Carsten is saying is, if you might need to pause a thread in the middle of Xlib, then that thread needs to make its own call to XOpenDisplay, so that it has its own connection, separate from the rest of the application. -- Tim Roberts, [EMAIL PROTECTED] Providenza Boekelheide, Inc. ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
On Tue, 31 Jan 2006 22:36:23 -0800 (PST) [EMAIL PROTECTED] babbled: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . application is using the same x display connection from multipel htreads without any locking or enablign threadsafeness in xlib. it's an application problem as such so you should direct this to the authors of that application or the particular toolkit(s) it depends on that may create such silent threads. Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel -- - Codito, ergo sum - I code, therefore I am -- The Rasterman (Carsten Haitzler)[EMAIL PROTECTED] 裸好多 Tokyo, Japan (東京 日本) ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 [EMAIL PROTECTED] wrote: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
Hi u have given a good suggestion but I dont understand if the pausing thread block any other thread trying to use the Xlib with the same display connection then why it is working fine sometimes . Thanks Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 [EMAIL PROTECTED] wrote: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
Re: Xlib : sequence lost (0x1718e 0x71a0) in reply to 0x0!
On Wed, 1 Feb 2006 22:18:49 -0800 (PST) [EMAIL PROTECTED] babbled: Hi u have given a good suggestion but I dont understand if the pausing thread block any other thread trying to use the Xlib with the same display connection then why it is working fine sometimes . Thanks that's life debugging and problems with threads. mostly you might be lucky and the threads don't clash and it HAPPENS to work - by sheer luck. when they do clash you end up with these weird problems that happen sometimes - ie concurrency/locking issues. Separate threads either need to use separate display connections or you need to enable thread mutexes for a shared connection (XInitThreads will enable Xlib's internal mutexes). Note still, that pausing a thread while it's in Xlib can block any other threads also trying to use Xlib with the same display connection. You'd want to use separate display connections for that. Mark. On Tue, 31 Jan 2006 [EMAIL PROTECTED] wrote: Hi to all Iam building an kde Application When I pause the current pthread and invoke an dialog in another thread the following error is coming . Xlib : unexpected async reply Xlib :sequence lost (0x1718e 0x71a0) in reply to 0x0! X Error : BadImplementation (server does not implement opertaion) 17 Major opcode : 20 MInor opcode : 0 Resource id : 0x759d1 The error is coming randomly , not always . Can any will help how to come out of this error . Thanks ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel -- - Codito, ergo sum - I code, therefore I am -- The Rasterman (Carsten Haitzler)[EMAIL PROTECTED] 裸好多 Tokyo, Japan (東京 日本) ___ Devel mailing list Devel@XFree86.Org http://XFree86.Org/mailman/listinfo/devel
