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| author | Ulrich Drepper <drepper@redhat.com> | 2007-05-23 20:51:45 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2007-05-23 20:51:45 +0000 |
| commit | 5a8075b116280d0c1ece277e4be75250efca45b2 (patch) | |
| tree | 7c63a4ba94c14bc46ececab97c299aff01078fb7 /nptl/allocatestack.c | |
| parent | 6d59823c29df228415836f289e62064f95849e71 (diff) | |
| download | glibc-5a8075b116280d0c1ece277e4be75250efca45b2.tar.gz glibc-5a8075b116280d0c1ece277e4be75250efca45b2.tar.xz glibc-5a8075b116280d0c1ece277e4be75250efca45b2.zip | |
* init.c (__pthread_initialize_minimal_internal): Check whether
private futexes are available. * allocatestack.c (allocate_stack): Copy private_futex field from current thread into the new stack. * sysdeps/unix/sysv/linux/x86_64/libc-lowlevellock.S: Use private futexes if they are available. * sysdeps/unix/sysv/linux/i386/i486/libc-lowlevellock.S: Likewise * sysdeps/unix/sysv/linux/x86_64/lowlevellock.S: Adjust so that change in libc-lowlevellock.S allow using private futexes. * sysdeps/unix/sysv/linux/i386/i486/lowlevellock.S: Likewise. * sysdeps/unix/sysv/linux/x86_64/lowlevellock.h: Define FUTEX_PRIVATE_FLAG. * sysdeps/unix/sysv/linux/i386/lowlevellock.h: Likewise. * sysdeps/unix/sysv/linux/x86_64/pthread_once.S: Use private futexes if they are available. * sysdeps/unix/sysv/linux/i386/pthread_once.S: Likewise. * sysdeps/x86_64/tcb-offsets.sym: Add PRIVATE_FUTEX. * sysdeps/i386/tcb-offsets.sym: Likewise. * sysdeps/x86_64/tls.h (tcbhead_t): Add private_futex field. * sysdeps/i386/tls.h (tcbhead_t): Likewise.
Diffstat (limited to 'nptl/allocatestack.c')
| -rw-r--r-- | nptl/allocatestack.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/nptl/allocatestack.c b/nptl/allocatestack.c index e556dbac08..5dac000d6e 100644 --- a/nptl/allocatestack.c +++ b/nptl/allocatestack.c @@ -376,6 +376,12 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, __pthread_multiple_threads = *__libc_multiple_threads_ptr = 1; #endif +#ifndef __ASSUME_PRIVATE_FUTEX + /* The thread must know when private futexes are supported. */ + pd->header.private_futex = THREAD_GETMEM (THREAD_SELF, + header.private_futex); +#endif + #ifdef NEED_DL_SYSINFO /* Copy the sysinfo value from the parent. */ THREAD_SYSINFO(pd) = THREAD_SELF_SYSINFO; @@ -510,6 +516,12 @@ allocate_stack (const struct pthread_attr *attr, struct pthread **pdp, __pthread_multiple_threads = *__libc_multiple_threads_ptr = 1; #endif +#ifndef __ASSUME_PRIVATE_FUTEX + /* The thread must know when private futexes are supported. */ + pd->header.private_futex = THREAD_GETMEM (THREAD_SELF, + header.private_futex); +#endif + #ifdef NEED_DL_SYSINFO /* Copy the sysinfo value from the parent. */ THREAD_SYSINFO(pd) = THREAD_SELF_SYSINFO; |