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author | Rich Felker <dalias@aerifal.cx> | 2018-08-28 12:45:44 -0400 |
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committer | Rich Felker <dalias@aerifal.cx> | 2018-08-28 12:45:44 -0400 |
commit | 060ed9367337cbbd59a9e5e638a1c2f460192f25 (patch) | |
tree | cdb04df5887a422cdc4a239d68664c393bd23b47 /arch/mips/bits/alltypes.h.in | |
parent | 92c52644e04ac754b1b282a9d33d033e04e1399e (diff) | |
download | musl-060ed9367337cbbd59a9e5e638a1c2f460192f25.tar.gz musl-060ed9367337cbbd59a9e5e638a1c2f460192f25.tar.xz musl-060ed9367337cbbd59a9e5e638a1c2f460192f25.zip |
fix deadlock in async thread self-cancellation
with async cancellation enabled, pthread_cancel(pthread_self()) deadlocked due to pthread_kill holding killlock which is needed by pthread_exit. this could be solved by making pthread_kill block signals around the critical section, at least when the target thread is itself, but the issue only arises for cancellation, and otherwise would just be imposing unnecessary cost. instead just have pthread_cancel explicitly check for async self-cancellation and call pthread_exit(PTHREAD_CANCELED) directly rather than going through the signal machinery.
Diffstat (limited to 'arch/mips/bits/alltypes.h.in')
0 files changed, 0 insertions, 0 deletions