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28 .\" $FreeBSD: src/share/man/man3/pthread_mutexattr.3,v 1.13 2007/10/22 10:08:00 ru Exp $
31 .Dt PTHREAD_MUTEXATTR 3
34 .Nm pthread_mutexattr_init ,
35 .Nm pthread_mutexattr_destroy ,
36 .Nm pthread_mutexattr_setprioceiling ,
37 .Nm pthread_mutexattr_getprioceiling ,
38 .Nm pthread_mutexattr_setprotocol ,
39 .Nm pthread_mutexattr_getprotocol ,
40 .Nm pthread_mutexattr_settype ,
41 .Nm pthread_mutexattr_gettype ,
42 .Nm pthread_mutexattr_getpshared ,
43 .Nm pthread_mutexattr_setpshared
44 .Nd mutex attribute operations
50 .Fn pthread_mutexattr_init "pthread_mutexattr_t *attr"
52 .Fn pthread_mutexattr_destroy "pthread_mutexattr_t *attr"
54 .Fn pthread_mutexattr_setprioceiling "pthread_mutexattr_t *attr" "int prioceiling"
56 .Fn pthread_mutexattr_getprioceiling "const pthread_mutexattr_t * restrict attr" "int * restrict prioceiling"
58 .Fn pthread_mutexattr_setprotocol "pthread_mutexattr_t *attr" "int protocol"
60 .Fn pthread_mutexattr_getprotocol "const pthread_mutexattr_t * restrict attr" "int * restrict protocol"
62 .Fn pthread_mutexattr_settype "pthread_mutexattr_t *attr" "int type"
64 .Fn pthread_mutexattr_gettype "const pthread_mutexattr_t * restrict attr" "int * restrict type"
66 .Fn pthread_mutexattr_setpshared "pthread_mutexattr_t *attr" "int pshared"
68 .Fn pthread_mutexattr_getpshared "const pthread_mutexattr_t * restrict attr" "int * restrict pshared"
70 Mutex attributes are used to specify parameters to
71 .Fn pthread_mutex_init .
72 One attribute object can be used in multiple calls to
73 .Fn pthread_mutex_init ,
74 with or without modifications between calls.
77 .Fn pthread_mutexattr_init
80 with all the default mutex attributes.
83 .Fn pthread_mutexattr_destroy
88 .Fn pthread_mutexattr_set*
89 functions set the attribute that corresponds to each function name.
91 .Fn pthread_mutexattr_setpshared
92 function only supports
93 .Dv PTHREAD_PROCESS_PRIVATE
97 .Fn pthread_mutexattr_get*
98 functions copy the value of the attribute that corresponds to each function name
99 to the location pointed to by the second function parameter.
101 If successful, these functions return 0.
102 Otherwise, an error number is returned to indicate the error.
105 .Fn pthread_mutexattr_init
106 function will fail if:
113 .Fn pthread_mutexattr_destroy
114 function will fail if:
122 .Fn pthread_mutexattr_setprioceiling
123 function will fail if:
133 .Fn pthread_mutexattr_getprioceiling
134 function will fail if:
142 .Fn pthread_mutexattr_setprotocol
143 function will fail if:
153 .Fn pthread_mutexattr_getprotocol
154 function will fail if:
162 .Fn pthread_mutexattr_getpshared
164 .Fn pthread_mutexattr_setpshared
165 functions will fail if:
168 The value specified by
174 .Fn pthread_mutexattr_settype
175 function will fail if:
185 .Fn pthread_mutexattr_gettype
186 function will fail if:
193 .Xr pthread_mutex_init 3
196 .Fn pthread_mutexattr_init
198 .Fn pthread_mutexattr_destroy
203 .Fn pthread_mutexattr_setprioceiling ,
204 .Fn pthread_mutexattr_getprioceiling ,
205 .Fn pthread_mutexattr_setprotocol ,
206 .Fn pthread_mutexattr_getprotocol ,
207 .Fn pthread_mutexattr_settype ,
209 .Fn pthread_mutexattr_gettype