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libmthread: add stack traces

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This commit is contained in:
Thomas Veerman 2012-03-30 09:16:46 +00:00
parent f571466c56
commit 8ae9987dca
2 changed files with 52 additions and 0 deletions
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2
include/minix/mthread.h
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@ -114,6 +114,8 @@ int mthread_setspecific(mthread_key_t key, void *value);
void mthread_stats(void);
void mthread_verify_f(char *f, int l);
#define mthread_verify() mthread_verify_f(__FILE__, __LINE__)
void mthread_stacktrace(mthread_thread_t t);
void mthread_stacktraces(void);
/* mutex.c */
int mthread_mutex_destroy(mthread_mutex_t *mutex);

50
lib/libmthread/misc.c
View file

@ -109,3 +109,53 @@ void mthread_stats(void)
}
#endif
/*===========================================================================*
* mthread_stacktrace *
*===========================================================================*/
void mthread_stacktrace(mthread_thread_t t)
{
unsigned long bp, hbp, pc;
mthread_tcb_t *tcb;
ucontext_t *ctx;
mcontext_t *mtx;
struct stackframe_s *frame;
printf("thread %d: ", t);
tcb = mthread_find_tcb(t);
ctx = &tcb->m_context;
mtx = &ctx->uc_mcontext;
frame = &mtx->mc_p_reg;
bp = frame->fp;
while (bp) {
pc = ((unsigned long *) bp)[1];
hbp = ((unsigned long *) bp)[0];
printf("0x%lx ", (unsigned long) pc);
if (hbp != 0 && hbp <= bp) {
pc = -1;
printf("0x%lx ", (unsigned long) pc);
break;
}
bp = hbp;
}
printf("\n");
}
/*===========================================================================*
* mthread_stacktraces *
*===========================================================================*/
void mthread_stacktraces(void)
{
mthread_thread_t t;
mthread_stacktrace(MAIN_THREAD);
for (t = (mthread_thread_t) 0; t < no_threads; t++)
mthread_stacktrace(t);
}