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Annotation of coherent/f/usr/include/common/_wait.h, revision 1.1.1.1

1.1       root        1: #ifndef        __COMMON__WAIT_H__
                      2: #define        __COMMON__WAIT_H__
                      3: 
                      4: /*
                      5:  * This internal header file is intended as the sole point of definition for
                      6:  * the manifest constants and macros related to the POSIX.1 wait () system
                      7:  * call. The definitions of these constants and macros is kept here to avoid
                      8:  * entanglement in namespace-reservation issues.
                      9:  *
                     10:  * Note that the POSIX.1 standard does not require that the W... contants be
                     11:  * integral constant expressions suitable for use in #if-expressions, so we
                     12:  * use that freedom to built enumerations instead.
                     13:  */
                     14: 
                     15: enum {
                     16:        __WSIGMASK      = 0x7F,
                     17:        __WSTOPFLG      = 0x7F,
                     18:        __WCOREFLG      = 0x80,
                     19: 
                     20:        __WEXITED       = 1,
                     21:        __WTRAPPED      = 2,
                     22:        __WCONTINUED    = 8,
                     23: 
                     24:        __WUNTRACED     = 4,
                     25:        __WNOHANG       = 64,
                     26:        __WNOWAIT       = 128
                     27: };
                     28: 
                     29: #define        __WCONTFLAG     0xFFFF
                     30: 
                     31: #define        __WIFCONTINUED(stat)    (((stat) & __WCONTFLAG) == __WCONTFLAG)
                     32: #define        __WCOREDUMP(stat)       ((stat) & __WCOREFLG)
                     33: 
                     34: #define        __WLOBYTE(stat)         ((stat) & 0xFF)
                     35: #define        __WHIBYTE(stat)         (((stat) >> 8) & 0xFF)
                     36: 
                     37: #define        __WIFEXITED(stat)       (__WLOBYTE (stat) == 0)
                     38: #define        __WEXITSTATUS(stat)     (__WHIBYTE (stat))
                     39: 
                     40: #define        __WIFSIGNALED(stat)     (__WLOBYTE (stat) > 0 && __WHIBYTE (stat) == 0)
                     41: #define        __WTERMSIG(stat)        (__WLOBYTE (stat) & __WSIGMASK)
                     42: 
                     43: #define        __WIFSTOPPED(stat)      (__WLOBYTE (stat) == __WSTOPFLG && \
                     44:                                 __WHIBYTE (stat) != 0)
                     45: #define        __WSTOPSIG(stat)        (__WHIBYTE (stat))
                     46: 
                     47: #endif /* ! defined (__COMMON__WAIT_H__) */
                     48: 

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