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hppa: Update struct __pthread_rwlock_arch_t comment. 

Signed-off-by: John David Anglin <dave.anglin@bell.net>
This commit is contained in:
John David Anglin 2023-04-05 18:54:47 +00:00
parent e9327e8584
commit c4468cd399
1 changed files with 5 additions and 5 deletions
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10
sysdeps/hppa/nptl/bits/struct_rwlock.h
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@ -27,11 +27,11 @@ struct __pthread_rwlock_arch_t
next four words are all set to 1 by the Linuxthreads next four words are all set to 1 by the Linuxthreads
PTHREAD_RWLOCK_INITIALIZER. We ignore them in NPTL. PTHREAD_RWLOCK_INITIALIZER. We ignore them in NPTL.
The 16-byte aligned lock stucture causes various pthread The 16-byte aligned lock stucture is not needed for NPTL.
structures to be over aligned. This causes some builds It causes some package builds to fail (e.g., protobuf) and
to fail which assume a maximum alignment of 8 bytes. issues with dynamic memory allocation in C++ versions prior
Linuxthreads has been removed for 12 years, so drop to C++17. Removing it allows for more efficient allocators
alignment of lock structure. */ and better compatibility with other architectures. */
int __compat_padding[4]; int __compat_padding[4];
unsigned int __readers; unsigned int __readers;
unsigned int __writers; unsigned int __writers;