static struct eh_context *
eh_context_initialize ()
{
#if __GTHREADS
static __gthread_once_t once = __GTHREAD_ONCE_INIT;
/* Make sure that get_eh_context does not point to us anymore.
Some systems have dummy thread routines in their libc that
return a success (Solaris 2.6 for example). */
if (__gthread_once (&once, eh_threads_initialize) != 0
|| get_eh_context == &eh_context_initialize)
{
/* Use static version of EH context. */
get_eh_context = &eh_context_static;
}
#else /* no __GTHREADS */
/* Use static version of EH context. */
get_eh_context = &eh_context_static;
#endif /* no __GTHREADS */
return (*get_eh_context) ();
}
static void
fc_key_init_once (void)
{
static __gthread_once_t once = __GTHREAD_ONCE_INIT;
if (__gthread_once (&once, fc_key_init) != 0 || use_fc_key < 0)
use_fc_key = 0;
}
static void
init_object_mutex_once (void)
{
static __gthread_once_t once = __GTHREAD_ONCE_INIT;
__gthread_once (&once, init_object_mutex);
}
void *
__emutls_get_address (struct __emutls_object *obj)
{
if (! __gthread_active_p ())
{
if (__builtin_expect (obj->loc.ptr == NULL, 0))
obj->loc.ptr = emutls_alloc (obj);
return obj->loc.ptr;
}
#ifndef __GTHREADS
abort ();
#else
pointer offset = obj->loc.offset;
if (__builtin_expect (offset == 0, 0))
{
static __gthread_once_t once = __GTHREAD_ONCE_INIT;
__gthread_once (&once, emutls_init);
__gthread_mutex_lock (&emutls_mutex);
offset = obj->loc.offset;
if (offset == 0)
{
offset = ++emutls_size;
obj->loc.offset = offset;
}
__gthread_mutex_unlock (&emutls_mutex);
}
struct __emutls_array *arr = __gthread_getspecific (emutls_key);
if (__builtin_expect (arr == NULL, 0))
{
pointer size = offset + 32;
arr = calloc (size + 1, sizeof (void *));
if (arr == NULL)
abort ();
arr->size = size;
__gthread_setspecific (emutls_key, (void *) arr);
}
else if (__builtin_expect (offset > arr->size, 0))
{
pointer orig_size = arr->size;
pointer size = orig_size * 2;
if (offset > size)
size = offset + 32;
arr = realloc (arr, (size + 1) * sizeof (void *));
if (arr == NULL)
abort ();
arr->size = size;
memset (arr->data + orig_size, 0,
(size - orig_size) * sizeof (void *));
__gthread_setspecific (emutls_key, (void *) arr);
}
void *ret = arr->data[offset - 1];
if (__builtin_expect (ret == NULL, 0))
{
ret = emutls_alloc (obj);
arr->data[offset - 1] = ret;
}
return ret;
#endif
}