подсказка процессору освободить общие ресурсы (Hint the processor to release shared resources)
Имя (Name)
__ppc_yield, __ppc_mdoio, __ppc_mdoom - Hint the processor to
release shared resources
Синопсис (Synopsis)
#include <sys/platform/ppc.h>
void __ppc_yield(void);
void __ppc_mdoio(void);
void __ppc_mdoom(void);
Описание (Description)
These functions provide hints about the usage of resources that
are shared with other processors on the Power architecture. They
can be used, for example, if a program waiting on a lock intends
to divert the shared resources to be used by other processors.
__ppc_yield() provides a hint that performance will probably be
improved if shared resources dedicated to the executing processor
are released for use by other processors.
__ppc_mdoio() provides a hint that performance will probably be
improved if shared resources dedicated to the executing processor
are released until all outstanding storage accesses to caching-
inhibited storage have been completed.
__ppc_mdoom() provides a hint that performance will probably be
improved if shared resources dedicated to the executing processor
are released until all outstanding storage accesses to cacheable
storage for which the data is not in the cache have been
completed.
Версии (Versions)
These functions first appeared in glibc in version 2.18.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│__ppc_yield(), __ppc_mdoio(), │ Thread safety │ MT-Safe │
│__ppc_mdoom() │ │ │
└──────────────────────────────────────┴───────────────┴─────────┘
Стандарты (Conforming to)
These functions are nonstandard GNU extensions.
Смотри также (See also)
__ppc_set_ppr_med(3)
Power ISA, Book II - Section 3.2 ("or" architecture)
