27 lines
800 B
Diff
27 lines
800 B
Diff
2007-11-01 Ryan S. Arnold <rsa@us.ibm.com>
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* nptl/sysdeps/unix/sysv/linux/lowlevellock.c
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(__lll_timedlock_wait) Wake before returning timeout.
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--- glibc-2.7/nptl/sysdeps/unix/sysv/linux/lowlevellock.c 2007-08-14 14:59:34.000000000 -0500
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+++ glibc-2.7.new/nptl/sysdeps/unix/sysv/linux/lowlevellock.c 2007-11-01 12:25:49.000000000 -0500
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@@ -76,12 +76,16 @@
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--rt.tv_sec;
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}
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+ int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
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/* Already timed out? */
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if (rt.tv_sec < 0)
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- return ETIMEDOUT;
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+ {
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+ if (oldval == 0)
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+ lll_futex_wake (futex, 1, private);
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+ return ETIMEDOUT;
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+ }
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/* Wait. */
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- int oldval = atomic_compare_and_exchange_val_acq (futex, 2, 1);
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if (oldval != 0)
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lll_futex_timed_wait (futex, 2, &rt, private);
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}
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