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* linux-nat.c (linux_nat_resume): Add more debugging messages. Do

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not short-circuit resuming all threads if the signal will be ignored
	in linux_nat_wait.
This commit is contained in:
Daniel Jacobowitz 2005-11-03 19:31:38 +00:00
parent 2e6f4fae07
commit 76f50ad1ce
2 changed files with 48 additions and 1 deletions
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6
gdb/ChangeLog
View File

@ -1,3 +1,9 @@
2006-11-03 Daniel Jacobowitz <dan@codesourcery.com>
* linux-nat.c (linux_nat_resume): Add more debugging messages. Do
not short-circuit resuming all threads if the signal will be ignored
in linux_nat_wait.
2005-11-02 Andrew Stubbs <andrew.stubbs@st.com>
* monitor.c (monitor_xfer_memory): Change char to gdb_byte.

43
gdb/linux-nat.c
View File

@ -1072,6 +1072,14 @@ linux_nat_resume (ptid_t ptid, int step, enum target_signal signo)
struct lwp_info *lp;
int resume_all;
if (debug_linux_nat)
fprintf_unfiltered (gdb_stdlog,
"LLR: Preparing to %s %s, %s, inferior_ptid %s\n",
step ? "step" : "resume",
target_pid_to_str (ptid),
signo ? strsignal (signo) : "0",
target_pid_to_str (inferior_ptid));
/* A specific PTID means `step only this process id'. */
resume_all = (PIDGET (ptid) == -1);
@ -1097,12 +1105,45 @@ linux_nat_resume (ptid_t ptid, int step, enum target_signal signo)
lp->resumed = 1;
/* If we have a pending wait status for this thread, there is no
point in resuming the process. */
point in resuming the process. But first make sure that
linux_nat_wait won't preemptively handle the event - we
should never take this short-circuit if we are going to
leave LP running, since we have skipped resuming all the
other threads. This bit of code needs to be synchronized
with linux_nat_wait. */
if (lp->status && WIFSTOPPED (lp->status))
{
int saved_signo = target_signal_from_host (WSTOPSIG (lp->status));
if (signal_stop_state (saved_signo) == 0
&& signal_print_state (saved_signo) == 0
&& signal_pass_state (saved_signo) == 1)
{
if (debug_linux_nat)
fprintf_unfiltered (gdb_stdlog,
"LLR: Not short circuiting for ignored "
"status 0x%x\n", lp->status);
/* FIXME: What should we do if we are supposed to continue
this thread with a signal? */
gdb_assert (signo == TARGET_SIGNAL_0);
signo = saved_signo;
lp->status = 0;
}
}
if (lp->status)
{
/* FIXME: What should we do if we are supposed to continue
this thread with a signal? */
gdb_assert (signo == TARGET_SIGNAL_0);
if (debug_linux_nat)
fprintf_unfiltered (gdb_stdlog,
"LLR: Short circuiting for status 0x%x\n",
lp->status);
return;
}