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

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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