diff options
Diffstat (limited to 'nptl/sysdeps/s390/tls.h')
| -rw-r--r-- | nptl/sysdeps/s390/tls.h | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/nptl/sysdeps/s390/tls.h b/nptl/sysdeps/s390/tls.h index 6f6f17b975..de8a81bd09 100644 --- a/nptl/sysdeps/s390/tls.h +++ b/nptl/sysdeps/s390/tls.h @@ -1,5 +1,5 @@ /* Definition for thread-local data handling. NPTL/s390 version. - Copyright (C) 2003, 2004, 2005, 2006 Free Software Foundation, Inc. + Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or @@ -27,6 +27,7 @@ # include <stdint.h> # include <stdlib.h> # include <list.h> +# include <kernel-features.h> /* Type for the dtv. */ @@ -50,6 +51,10 @@ typedef struct int multiple_threads; uintptr_t sysinfo; uintptr_t stack_guard; + int gscope_flag; +#ifndef __ASSUME_PRIVATE_FUTEX + int private_futex; +#endif } tcbhead_t; # ifndef __s390x__ @@ -168,6 +173,29 @@ typedef struct #define THREAD_SET_POINTER_GUARD(value) #define THREAD_COPY_POINTER_GUARD(descr) +/* Get and set the global scope generation counter in struct pthread. */ +#define THREAD_GSCOPE_FLAG_UNUSED 0 +#define THREAD_GSCOPE_FLAG_USED 1 +#define THREAD_GSCOPE_FLAG_WAIT 2 +#define THREAD_GSCOPE_RESET_FLAG() \ + do \ + { int __res \ + = atomic_exchange_rel (&THREAD_SELF->header.gscope_flag, \ + THREAD_GSCOPE_FLAG_UNUSED); \ + if (__res == THREAD_GSCOPE_FLAG_WAIT) \ + lll_futex_wake (&THREAD_SELF->header.gscope_flag, 1); \ + } \ + while (0) +#define THREAD_GSCOPE_SET_FLAG() \ + do \ + { \ + THREAD_SELF->header.gscope_flag = THREAD_GSCOPE_FLAG_USED; \ + atomic_write_barrier (); \ + } \ + while (0) +#define THREAD_GSCOPE_WAIT() \ + GL(dl_wait_lookup_done) () + #endif /* __ASSEMBLER__ */ #endif /* tls.h */ |