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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/lowlevelbarrier.sym | |
| 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/lowlevelbarrier.sym')
| -rw-r--r-- | nptl/lowlevelbarrier.sym | 12 |
1 files changed, 0 insertions, 12 deletions
diff --git a/nptl/lowlevelbarrier.sym b/nptl/lowlevelbarrier.sym deleted file mode 100644 index cfe22b0..0000000 --- a/nptl/lowlevelbarrier.sym +++ /dev/null @@ -1,12 +0,0 @@ -#include <stddef.h> -#include <sched.h> -#include <bits/pthreadtypes.h> -#include "internaltypes.h" - --- - -CURR_EVENT offsetof (struct pthread_barrier, curr_event) -MUTEX offsetof (struct pthread_barrier, lock) -LEFT offsetof (struct pthread_barrier, left) -INIT_COUNT offsetof (struct pthread_barrier, init_count) -PRIVATE offsetof (struct pthread_barrier, private) |