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[Gdb-discuss] Problem with multi-thread debugging with gdbserver
From: |
peter_tkchoi |
Subject: |
[Gdb-discuss] Problem with multi-thread debugging with gdbserver |
Date: |
Thu, 27 Oct 2005 09:20:04 +0800 |
Hi,
I've heard that GDB 5.3 onwards has supported remote
debugging multiple thread programs, but I still fail
to do so. I wonder what I have done wrong.
I work with a x86 host and a x86 target, both with
linux kernel 2.4.22. I worked on a test program below,
linked with glibc:
#include <pthread.h>
#include <stdio.h>
#define NUM_THREADS 5
void *thread_function(void *arg)
{
printf("Hello World from %d!\n", arg);
sleep(10);
pthread_exit(NULL);
}
int main(int argc, char *argv[])
{
pthread_t threads[NUM_THREADS];
int i;
for (i = 0; i < NUM_THREADS; i++)
pthread_create(&threads[i], NULL,
thread_function, (void *)i);
for (i = 0; i < NUM_THREADS; i++)
pthread_join(threads[i], NULL);
return 0;
}
First we set everything up and connect:
(gdb) set solib-search-path
/usr/local/cris/r59/cris-axis-linux-gnu/lib/
(gdb) set solib-absolute-prefix /dev/null/
(gdb) set remotetimeout 60
(gdb) target remote 10.84.130.10:2222
Remote debugging using 10.84.130.10:2222
0x35557608 in ?? ()
Next we set a breakpoint in main after all threads
have been created:
(gdb) break 20
Breakpoint 1 at 0x80568: file hello.c, line 20.
Now send the program on its way:
(gdb) c
Continuing.
On the host computer, I fail to see other threads,
other than the main thread. As a result, I fail to set
breakpoint on the other threads.
I wonder what I have done wrong.
Pls advise. Thank you for your attention.
Regards.
Peter Choi
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- [Gdb-discuss] Problem with multi-thread debugging with gdbserver,
peter_tkchoi <=