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12 .TH PTHREAD_CONDATTR_INIT 3C "Mar 23, 2005"
14 pthread_condattr_init, pthread_condattr_destroy \- initialize or destroy
15 condition variable attributes object
19 cc -mt [ \fIflag\fR... ] \fIfile\fR... -lpthread [ \fIlibrary\fR... ]
22 \fBint\fR \fBpthread_condattr_init\fR(\fBpthread_condattr_t *\fR\fIattr\fR);
27 \fBint\fR \fBpthread_condattr_destroy\fR(\fBpthread_condattr_t *\fR\fIattr\fR);
33 The \fBpthread_condattr_init()\fR function initializes a condition variable
34 attributes object \fIattr\fR with the default value for all of the attributes
35 defined by the implementation.
38 At present, the only attribute available is the scope of condition variables.
39 The default scope of the attribute is \fBPTHREAD_PROCESS_PRIVATE\fR.
42 Attempts to initialize previously initialized condition variable attributes
43 object will leave the storage allocated by the previous initialization
47 After a condition variable attributes object has been used to initialize one or
48 more condition variables, any function affecting the attributes object
49 (including destruction) does not affect any previously initialized condition
53 The \fBpthread_condattr_destroy()\fR function destroys a condition variable
54 attributes object; the object becomes, in effect, uninitialized. An
55 implementation may cause \fBpthread_condattr_destroy()\fR to set the object
56 referenced by \fIattr\fR to an invalid value. A destroyed condition variable
57 attributes object can be re-initialized using \fBpthread_condattr_init()\fR;
58 the results of otherwise referencing the object after it has been destroyed are
62 Additional attributes, their default values, and the names of the associated
63 functions to get and set those attribute values are implementation-dependent.
67 If successful, the \fBpthread_condattr_init()\fR and
68 \fBpthread_condattr_destroy()\fR functions return \fB0\fR. Otherwise, an error
69 number is returned to indicate the error.
73 The \fBpthread_condattr_init()\fR function will fail if:
80 Insufficient memory exists to initialize the condition variable attributes
86 The \fBpthread_condattr_destroy()\fR function may fail if:
93 The value specified by \fIattr\fR is invalid.
99 See \fBattributes\fR(5) for descriptions of the following attributes:
107 ATTRIBUTE TYPE ATTRIBUTE VALUE
109 Interface Stability Standard
117 \fBpthread_condattr_getpshared\fR(3C), \fBpthread_condattr_setpshared\fR(3C),
118 \fBpthread_cond_init\fR(3C), \fBpthread_create\fR(3C),
119 \fBpthread_mutex_init\fR(3C), \fBattributes\fR(5), \fBstandards\fR(5)