diff options
| author | Andi Kleen <ak@linux.intel.com> | 2012-12-22 00:58:34 -0800 |
|---|---|---|
| committer | Andi Kleen <ak@linux.intel.com> | 2013-07-02 08:46:54 -0700 |
| commit | b023e4ca99f5e81f90d87d23cd267ef2abd2388c (patch) | |
| tree | 6fd6b77bef5574ee6fa5aa44967766b018d3b489 /nptl/sysdeps | |
| parent | 1cdbe579482c07e9f4bb3baa4864da2d3e7eb837 (diff) | |
| download | glibc-b023e4ca99f5e81f90d87d23cd267ef2abd2388c.tar.gz glibc-b023e4ca99f5e81f90d87d23cd267ef2abd2388c.tar.xz glibc-b023e4ca99f5e81f90d87d23cd267ef2abd2388c.zip | |
Add new internal mutex type flags for elision.
Add Enable/disable flags used internally Extend the mutex initializers to have the fields needed for elision. The layout stays the same, and this is not visible to programs. These changes are not exposed outside pthread
Diffstat (limited to 'nptl/sysdeps')
| -rw-r--r-- | nptl/sysdeps/pthread/pthread.h | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/nptl/sysdeps/pthread/pthread.h b/nptl/sysdeps/pthread/pthread.h index ded5ae59ff..61d534687f 100644 --- a/nptl/sysdeps/pthread/pthread.h +++ b/nptl/sysdeps/pthread/pthread.h @@ -83,27 +83,39 @@ enum /* Mutex initializers. */ +#if __PTHREAD_MUTEX_HAVE_ELISION == 1 /* 64bit layout. */ +#define __PTHREAD_SPINS 0, 0 +#elif __PTHREAD_MUTEX_HAVE_ELISION == 2 /* 32bit layout. */ +#define __PTHREAD_SPINS { 0, 0 } +#else +#define __PTHREAD_SPINS 0 +#endif + #ifdef __PTHREAD_MUTEX_HAVE_PREV # define PTHREAD_MUTEX_INITIALIZER \ - { { 0, 0, 0, 0, 0, 0, { 0, 0 } } } + { { 0, 0, 0, 0, 0, __PTHREAD_SPINS, { 0, 0 } } } # ifdef __USE_GNU # define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { 0, 0 } } } + { { 0, 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } # define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { 0, 0 } } } + { { 0, 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, __PTHREAD_SPINS, { 0, 0 } } } # define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { 0, 0 } } } + { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } +# define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ + { { 0, 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, __PTHREAD_SPINS, { 0, 0 } } } + # endif #else # define PTHREAD_MUTEX_INITIALIZER \ - { { 0, 0, 0, 0, 0, { 0 } } } + { { 0, 0, 0, 0, 0, { __PTHREAD_SPINS } } } # ifdef __USE_GNU # define PTHREAD_RECURSIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { 0 } } } + { { 0, 0, 0, PTHREAD_MUTEX_RECURSIVE_NP, 0, { __PTHREAD_SPINS } } } # define PTHREAD_ERRORCHECK_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { 0 } } } + { { 0, 0, 0, PTHREAD_MUTEX_ERRORCHECK_NP, 0, { __PTHREAD_SPINS } } } # define PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP \ - { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { 0 } } } + { { 0, 0, 0, PTHREAD_MUTEX_ADAPTIVE_NP, 0, { __PTHREAD_SPINS } } } + # endif #endif |