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Annotation of coherent/f/usr/include/kernel/pstate.h, revision 1.1

1.1     ! root        1: #ifndef        __KERNEL_PSTATE_H__
        !             2: #define        __KERNEL_PSTATE_H__
        !             3: 
        !             4: /*
        !             5:  * Process state-code type. This is available at user level to the "ps"
        !             6:  * command, but has no portable user-level use even there as the kernel
        !             7:  * also supplies "ps" with the printable character-code that corresponds to
        !             8:  * the state.
        !             9:  */
        !            10: 
        !            11: typedef enum {
        !            12:        PS_RUN,                 /* Running */
        !            13:        PS_READY,               /* Ready to run */
        !            14:        PS_MUTEX,               /* Blocked on a basic or read/write lock */
        !            15:        PS_SLEEP,               /* Sleeping, signals do not interrupt */
        !            16:        PS_WAIT,                /* Sleeping, interruptible */
        !            17:        PS_STOPPED,             /* Stopped */
        !            18:        PS_ZOMBIE,              /* Exiting */
        !            19:        PS_MAXSTATE
        !            20: } procstate_t;
        !            21: 
        !            22: 
        !            23: /*
        !            24:  * The only drawback of using enumerations is that we cannot perform useful
        !            25:  * tests on them at compile-time with #if. Here we set a feature-test to
        !            26:  * say whether or not the state code fits in a word (or long-word) mask so
        !            27:  * that tests for state sets can have some important source-level optimization
        !            28:  * performed. Your mileage may vary, but it may be faster to use shift-and-
        !            29:  * mask techniques than a cascade of equality tests; this feature-test says
        !            30:  * whether these techniques /can/ be applied to this data type.
        !            31:  */
        !            32: 
        !            33: #define        _PSTATE_CAN_MASK                1
        !            34: 
        !            35: #endif /* ! defined (__KERNEL_PSTATE_H__) */

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