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libmthread: do not dump stack for free threads

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Change-Id: Ic438a252f5bddaf1513f554c71173e6fffb0c674
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David van Moolenbroek 2013-08-30 00:57:16 +02:00 committed by Lionel Sambuc
parent 723e51327f
commit 2af99c141d
1 changed files with 6 additions and 2 deletions
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8
lib/libmthread/misc.c
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@ -122,10 +122,14 @@ void mthread_stacktrace(mthread_thread_t t)
mcontext_t *mtx; mcontext_t *mtx;
struct stackframe_s *frame; struct stackframe_s *frame;
printf("thread %d: ", t);
tcb = mthread_find_tcb(t); tcb = mthread_find_tcb(t);
ctx = &tcb->m_context; ctx = &tcb->m_context;
if (t != MAIN_THREAD && ctx->uc_stack.ss_size == 0)
return; /* no stack, no stacktrace */
printf("thread %d: ", t);
mtx = &ctx->uc_mcontext; mtx = &ctx->uc_mcontext;
frame = &mtx->mc_p_reg; frame = &mtx->mc_p_reg;
bp = frame->fp; bp = frame->fp;