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| author | Torvald Riegel <triegel@redhat.com> | 2015-06-24 14:37:32 +0200 |
|---|---|---|
| committer | Torvald Riegel <triegel@redhat.com> | 2016-01-15 21:20:34 +0100 |
| commit | b02840bacdefde318d2ad2f920e50785b9b25d69 (patch) | |
| tree | dcf8ee01d1e4bdb42686d890c1d00bf3249fbcaf /nptl/tst-barrier4.c | |
| parent | a3e5b4feeb54cb92657ec2bc6d9be1fcef9e8575 (diff) | |
| download | glibc-b02840bacdefde318d2ad2f920e50785b9b25d69.zip glibc-b02840bacdefde318d2ad2f920e50785b9b25d69.tar.gz glibc-b02840bacdefde318d2ad2f920e50785b9b25d69.tar.bz2 | |
New pthread_barrier algorithm to fulfill barrier destruction requirements.
The previous barrier implementation did not fulfill the POSIX requirements
for when a barrier can be destroyed. Specifically, it was possible that
threads that haven't noticed yet that their round is complete still access
the barrier's memory, and that those accesses can happen after the barrier
has been legally destroyed.
The new algorithm does not have this issue, and it avoids using a lock
internally.
Diffstat (limited to 'nptl/tst-barrier4.c')
| -rw-r--r-- | nptl/tst-barrier4.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/nptl/tst-barrier4.c b/nptl/tst-barrier4.c index 4eef5aa..d3d3209 100644 --- a/nptl/tst-barrier4.c +++ b/nptl/tst-barrier4.c @@ -16,7 +16,7 @@ License along with the GNU C Library; if not, see <http://www.gnu.org/licenses/>. */ -/* This is a test for behavior not guaranteed by POSIX. */ +/* This tests destruction of a barrier right after waiting on it. */ #include <errno.h> #include <pthread.h> #include <stdio.h> |