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Annotation of coherent/f/usr/include/kernel/_lock.h, revision 1.1.1.1

1.1       root        1: #ifndef        __KERNEL__LOCK_H__
                      2: #define        __KERNEL__LOCK_H__
                      3: 
                      4: /*
                      5:  * This internal header file is intended as the sole point of definition for
                      6:  * the internal data type "__lock_t", exactly equivalent to the basic lock
                      7:  * type "lock_t", but given an internal name so that header files may refer to
                      8:  * this type without exporting the type name into the user's namespace.
                      9:  */
                     10: 
                     11: typedef struct __basic_lock    __lock_t;
                     12: 
                     13: 
                     14: /*
                     15:  * Range of valid lock hierarchy values. Since DDI/DKI library routines often
                     16:  * need locks of their own, we also define hierarchy values here that are
                     17:  * suitable for those other operations and which are greater than any
                     18:  * hierarchy value we will permit a driver.
                     19:  *
                     20:  * The hierarchy range is here because it is fixed, and because it may be
                     21:  * convenient to use the following definitions as the basis of other
                     22:  * definitions within kernel headers without importing <sys/ksynch.h>
                     23:  *
                     24:  * Note that the maximum values are inclusive.
                     25:  */
                     26: 
                     27: enum {
                     28:        __MIN_HIERARCHY__ = 1,
                     29:        __MAX_DDI_HIERARCHY__ = 32,
                     30:        __MAX_HIERARCHY__ = 40
                     31: };
                     32: 
                     33: 
                     34: /*
                     35:  * The official DDI/DKI type of a lock hierarchy value is "unsigned char". To
                     36:  * make things clearer in function prototypes, we define our own internal type
                     37:  * for lock hierarchy values.
                     38:  */
                     39: 
                     40: typedef        unsigned char           __lkhier_t;
                     41: 
                     42: #endif /* ! defined (__KERNEL__LOCK_H__) */

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