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Add a DDB "traceall" function, which stack traces all known process

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threads.  This is quite useful if generating a debug log for post-mortem
by another developer, in which case the person at the console may not
know which threads are of interest.  The output of this can be quite
long.

Discussed with:	kris
MFC after:	3 days
This commit is contained in:
Robert Watson 2005-10-02 11:41:12 +00:00
parent 125450bbb7
commit a7ad956bdf
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=150819
1 changed files with 18 additions and 0 deletions
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18
sys/ddb/db_command.c
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@ -71,6 +71,7 @@ static db_cmdfcn_t db_gdb;
static db_cmdfcn_t db_kill;
static db_cmdfcn_t db_reset;
static db_cmdfcn_t db_stack_trace;
static db_cmdfcn_t db_stack_trace_all;
static db_cmdfcn_t db_watchdog;
/*
@ -114,6 +115,7 @@ static struct command db_command_table[] = {
{ "next", db_trace_until_matching_cmd,0, 0 },
{ "match", db_trace_until_matching_cmd,0, 0 },
{ "trace", db_stack_trace, CS_OWN, 0 },
{ "traceall", db_stack_trace_all, 0, 0 },
{ "where", db_stack_trace, CS_OWN, 0 },
{ "call", db_fncall, CS_OWN, 0 },
{ "show", 0, 0, db_show_cmds },
@ -675,3 +677,19 @@ db_stack_trace(db_expr_t tid, boolean_t hastid, db_expr_t count, char *modif)
db_printf("Tracing pid %d tid %ld td %p\n", pid, (long)td->td_tid, td);
db_trace_thread(td, count);
}
static void
db_stack_trace_all(db_expr_t dummy, boolean_t dummy2, db_expr_t dummy3,
char *dummy4)
{
struct proc *p;
struct thread *td;
for (p = LIST_FIRST(&allproc); p != NULL; p = LIST_NEXT(p, p_list)) {
FOREACH_THREAD_IN_PROC(p, td) {
db_printf("\nTracing command %s pid %d tid %ld td %p\n",
p->p_comm, p->p_pid, (long)td->td_tid, td);
db_trace_thread(td, -1);
}
}
}