I have just implemented a new target for gdb-4.18 which allows programs which use FreeBSD's user threads library to be effectively debugged. The new target automatically detects the presence of user threads when a program is started or attached to and examined using the gdb commands 'info thread' and 'thread'.
To allow individual threads to be distinguished from gdb, I had to make the following minor change to uthread. Unless anyone has any objections, I will be committing this change and the new gdb target into -current. Index: pthread_private.h =================================================================== RCS file: /home/ncvs/src/lib/libc_r/uthread/pthread_private.h,v retrieving revision 1.17 diff -u -r1.17 pthread_private.h --- pthread_private.h 1999/03/23 05:07:54 1.17 +++ pthread_private.h 1999/05/06 15:26:53 @@ -420,6 +420,7 @@ #define PTHREAD_MAGIC ((u_int32_t) 0xd09ba115) u_int32_t magic; char *name; + int tid; /* for gdb */ /* * Lock for accesses to this thread structure. Index: uthread_create.c =================================================================== RCS file: /home/ncvs/src/lib/libc_r/uthread/uthread_create.c,v retrieving revision 1.12 diff -u -r1.12 uthread_create.c --- uthread_create.c 1999/03/23 05:07:55 1.12 +++ uthread_create.c 1999/05/06 15:27:33 @@ -42,6 +42,8 @@ #include "pthread_private.h" #include "libc_private.h" +static int next_tid = 1; + int pthread_create(pthread_t * thread, const pthread_attr_t * attr, void *(*start_routine) (void *), void *arg) @@ -87,6 +89,7 @@ } else { /* Initialise the thread structure: */ memset(new_thread, 0, sizeof(struct pthread)); + new_thread->tid = next_tid++; new_thread->slice_usec = -1; new_thread->sig_saved = 0; new_thread->stack = stack; -- Doug Rabson Mail: d...@nlsystems.com Nonlinear Systems Ltd. Phone: +44 181 442 9037 To Unsubscribe: send mail to majord...@freebsd.org with "unsubscribe freebsd-current" in the body of the message