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author | Ulrich Drepper <drepper@redhat.com> | 2007-07-24 06:43:01 +0000 |
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committer | Ulrich Drepper <drepper@redhat.com> | 2007-07-24 06:43:01 +0000 |
commit | b5f13526e21cbca3f1359a32292fbbfa3515de59 (patch) | |
tree | 0586cb4ddd2dd5cab7b49bdfced7373f2457f499 /nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h | |
parent | c1bf9f14ab383737ff4d6668d6118f44528a3965 (diff) | |
download | glibc-b5f13526e21cbca3f1359a32292fbbfa3515de59.tar.gz glibc-b5f13526e21cbca3f1359a32292fbbfa3515de59.tar.xz glibc-b5f13526e21cbca3f1359a32292fbbfa3515de59.zip |
* sysdeps/unix/sysv/linux/powerpc/lowlevellock.h
(__lll_private_flag): Define. (lll_futex_wait): Define as a wrapper around lll_futex_timed_wait. (lll_futex_timed_wait, lll_futex_wake, lll_futex_wake_unlock): Use __lll_private_flag. (lll_private_futex_wait, lll_private_futex_timedwait, lll_private_futex_wake): Define as wrapper around non-_private macros. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h (__lll_private_flag): Define. (lll_futex_timed_wait, lll_futex_wake): Use __lll_private_flag. (lll_private_futex_wait, lll_private_futex_timedwait, lll_private_futex_wake): Define as wrapper around non-_private macros.
Diffstat (limited to 'nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h')
-rw-r--r-- | nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h | 94 |
1 files changed, 34 insertions, 60 deletions
diff --git a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h index b86d95e93d..6323d4850d 100644 --- a/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h +++ b/nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.h @@ -50,6 +50,31 @@ #define LLL_PRIVATE 0 #define LLL_SHARED FUTEX_PRIVATE_FLAG +#if !defined NOT_IN_libc || defined IS_IN_rtld +/* In libc.so or ld.so all futexes are private. */ +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + ((fl) | FUTEX_PRIVATE_FLAG) +# else +# define __lll_private_flag(fl, private) \ + ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) +# endif +#else +# ifdef __ASSUME_PRIVATE_FUTEX +# define __lll_private_flag(fl, private) \ + (((fl) | FUTEX_PRIVATE_FLAG) ^ (private)) +# else +# define __lll_private_flag(fl, private) \ + (__builtin_constant_p (private) \ + ? ((private) == 0 \ + ? ((fl) | THREAD_GETMEM (THREAD_SELF, header.private_futex)) \ + : (fl)) \ + : ({ unsigned int __fl = ((private) ^ FUTEX_PRIVATE_FLAG); \ + asm ("andl %%fs:%P1, %0" : "+r" (__fl) \ + : "i" offsetof (struct pthread, header.private_futex)); \ + __fl | (fl); }) +# endif +#endif /* Initializer for compatibility lock. */ #define LLL_MUTEX_LOCK_INITIALIZER (0) @@ -169,7 +194,8 @@ LLL_STUB_UNWIND_INFO_END register __typeof (val) _val __asm ("edx") = (val); \ __asm __volatile ("syscall" \ : "=a" (__status) \ - : "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAIT), \ + : "0" (SYS_futex), "D" (futex), \ + "S" (__lll_private_flag (FUTEX_WAIT, private)), \ "d" (_val), "r" (__to) \ : "memory", "cc", "r11", "cx"); \ __status; \ @@ -182,73 +208,21 @@ LLL_STUB_UNWIND_INFO_END register __typeof (nr) _nr __asm ("edx") = (nr); \ __asm __volatile ("syscall" \ : "=a" (__ignore) \ - : "0" (SYS_futex), "D" (futex), "S" (FUTEX_WAKE), \ + : "0" (SYS_futex), "D" (futex), \ + "S" (__lll_private_flag (FUTEX_WAKE, private)), \ "d" (_nr) \ : "memory", "cc", "r10", "r11", "cx"); \ } while (0) #define lll_private_futex_wait(futex, val) \ - lll_private_futex_timed_wait (futex, val, NULL) - - -#ifdef __ASSUME_PRIVATE_FUTEX -# define lll_private_futex_timed_wait(futex, val, timeout) \ - ({ \ - register const struct timespec *__to __asm ("r10") = timeout; \ - int __status; \ - register __typeof (val) _val __asm ("edx") = (val); \ - __asm __volatile ("syscall" \ - : "=a" (__status) \ - : "0" (SYS_futex), "D" (futex), \ - "S" (FUTEX_WAIT | FUTEX_PRIVATE_FLAG), \ - "d" (_val), "r" (__to) \ - : "memory", "cc", "r11", "cx"); \ - __status; \ - }) + lll_futex_timed_wait (futex, val, NULL, LLL_PRIVATE) +#define lll_private_futex_timed_wait(futex, val, timeout) \ + lll_futex_timed_wait (futex, val, timeout, LLL_PRIVATE) -# define lll_private_futex_wake(futex, nr) \ - do { \ - int __ignore; \ - register __typeof (nr) _nr __asm ("edx") = (nr); \ - __asm __volatile ("syscall" \ - : "=a" (__ignore) \ - : "0" (SYS_futex), "D" (futex), \ - "S" (FUTEX_WAKE | FUTEX_PRIVATE_FLAG), \ - "d" (_nr) \ - : "memory", "cc", "r10", "r11", "cx"); \ - } while (0) -#else -# define lll_private_futex_timed_wait(futex, val, timeout) \ - ({ \ - register const struct timespec *__to __asm ("r10") = timeout; \ - int __status; \ - int __ignore; \ - register __typeof (val) _val __asm ("edx") = (val); \ - __asm __volatile ("movl %%fs:%P3, %%esi\n\t" \ - "syscall" \ - : "=a" (__status), "=S" (__ignore) \ - : "0" (SYS_futex), "i" (PRIVATE_FUTEX), "D" (futex), \ - "d" (_val), "r" (__to) \ - : "memory", "cc", "r11", "cx"); \ - __status; \ - }) - - -# define lll_private_futex_wake(futex, nr) \ - do { \ - int __ignore; \ - int __ignore2; \ - register __typeof (nr) _nr __asm ("edx") = (nr); \ - __asm __volatile ("orl %%fs:%P3, %%esi\n\t" \ - "syscall" \ - : "=a" (__ignore), "=S" (__ignore2) \ - : "0" (SYS_futex), "i" (PRIVATE_FUTEX), "D" (futex), \ - "1" (FUTEX_WAKE), "d" (_nr) \ - : "memory", "cc", "r10", "r11", "cx"); \ - } while (0) -#endif +#define lll_private_futex_wake(futex, nr) \ + lll_futex_wake (futex, nr, LLL_PRIVATE) /* Does not preserve %eax and %ecx. */ |