diff options
Diffstat (limited to 'sysdeps/mach/hurd/tls.h')
| -rw-r--r-- | sysdeps/mach/hurd/tls.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/tls.h b/sysdeps/mach/hurd/tls.h index faff87c7b5..67c657b655 100644 --- a/sysdeps/mach/hurd/tls.h +++ b/sysdeps/mach/hurd/tls.h @@ -27,6 +27,7 @@ # include <sysdep.h> # include <mach/mig_errors.h> # include <mach.h> +# include <atomic.h> /* This is the size of the initial TCB. */ @@ -51,6 +52,26 @@ # define GET_DTV(descr) \ (((tcbhead_t *) (descr))->dtv) +/* Global scope switch support. */ +#define THREAD_GSCOPE_IN_TCB 0 +#define THREAD_GSCOPE_GLOBAL +#define THREAD_GSCOPE_SET_FLAG() \ + atomic_exchange_and_add_acq (&GL(dl_thread_gscope_count), 1) +#define THREAD_GSCOPE_RESET_FLAG() \ + do \ + if (atomic_exchange_and_add_rel (&GL(dl_thread_gscope_count), -1) == 1) \ + lll_wake (&GL(dl_thread_gscope_count), 0); \ + while (0) +#define THREAD_GSCOPE_WAIT() \ + do \ + { \ + int count; \ + atomic_write_barrier (); \ + while ((count = GL(dl_thread_gscope_count))) \ + lll_wait (&GL(dl_thread_gscope_count), count, 0); \ + } \ + while (0) + #endif /* !ASSEMBLER */ |