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| author | Emilio G. Cota <cota@braap.org> | 2015-08-23 20:23:40 -0400 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2015-09-02 23:03:03 +0200 |
| commit | 16ef9d0252318d7e32e445fd7474af55dbaab7db (patch) | |
| tree | 98bd1fae33adb1e0ee30df37b4ca4ea1e15c464a /util/qemu-thread-posix.c | |
| parent | 090d0bfd948343d522cd20bc634105b5cfe2483b (diff) | |
qemu-thread: handle spurious futex_wait wakeups
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <1440375847-17603-12-git-send-email-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'util/qemu-thread-posix.c')
| -rw-r--r-- | util/qemu-thread-posix.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/util/qemu-thread-posix.c b/util/qemu-thread-posix.c index ba67cec62b..d529405f53 100644 --- a/util/qemu-thread-posix.c +++ b/util/qemu-thread-posix.c @@ -298,7 +298,16 @@ static inline void futex_wake(QemuEvent *ev, int n) static inline void futex_wait(QemuEvent *ev, unsigned val) { - futex(ev, FUTEX_WAIT, (int) val, NULL, NULL, 0); + while (futex(ev, FUTEX_WAIT, (int) val, NULL, NULL, 0)) { + switch (errno) { + case EWOULDBLOCK: + return; + case EINTR: + break; /* get out of switch and retry */ + default: + abort(); + } + } } #else static inline void futex_wake(QemuEvent *ev, int n) |