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Remove local variable 'first', instead check signal number in memory,

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because the variable can be in register, second checking the variable
may still return true, however this is unexpected.
This commit is contained in:
David Xu 2010-10-29 07:04:45 +00:00
parent 49939626be
commit 322a8adaa3
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=214500
1 changed files with 1 additions and 4 deletions
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5
lib/libthr/thread/thr_sig.c
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@ -317,14 +317,11 @@ check_deferred_signal(struct pthread *curthread)
ucontext_t uc;
struct sigaction act;
siginfo_t info;
volatile int first;
if (__predict_true(curthread->deferred_siginfo.si_signo == 0))
return;
first = 1;
getcontext(&uc);
if (first) {
first = 0;
if (curthread->deferred_siginfo.si_signo == 0) {
act = curthread->deferred_sigact;
uc.uc_sigmask = curthread->deferred_sigmask;
memcpy(&info, &curthread->deferred_siginfo, sizeof(siginfo_t));