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| author | davidxu <davidxu@FreeBSD.org> | 2013-04-18 05:12:11 +0000 |
|---|---|---|
| committer | davidxu <davidxu@FreeBSD.org> | 2013-04-18 05:12:11 +0000 |
| commit | 05a4fb8c6e2d4ef9d563419c0af6b81ab5bfd6c0 (patch) | |
| tree | 107659e7ca960e3f74c9be96f5a0415189832b9a /lib/libthr/thread/thr_sig.c | |
| parent | 630a7926307fcf6760d3c4c9fadc6ac2c8b52f67 (diff) | |
| download | FreeBSD-src-05a4fb8c6e2d4ef9d563419c0af6b81ab5bfd6c0.zip FreeBSD-src-05a4fb8c6e2d4ef9d563419c0af6b81ab5bfd6c0.tar.gz | |
Revert revision 249323, the PR/177624 is confusing, that bug is caused
by using buggy getcontext/setcontext on same stack, while swapcontext
normally works on different stack, there is no such a problem.
Diffstat (limited to 'lib/libthr/thread/thr_sig.c')
| -rw-r--r-- | lib/libthr/thread/thr_sig.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/lib/libthr/thread/thr_sig.c b/lib/libthr/thread/thr_sig.c index a99395f..d2be994 100644 --- a/lib/libthr/thread/thr_sig.c +++ b/lib/libthr/thread/thr_sig.c @@ -737,4 +737,13 @@ _setcontext(const ucontext_t *ucp) return __sys_setcontext(&uc); } -__weak_reference(__sys_swapcontext, swapcontext); +__weak_reference(_swapcontext, swapcontext); +int +_swapcontext(ucontext_t *oucp, const ucontext_t *ucp) +{ + ucontext_t uc; + + (void) memcpy(&uc, ucp, sizeof(uc)); + remove_thr_signals(&uc.uc_sigmask); + return __sys_swapcontext(oucp, &uc); +} |
