man3/pthread_attr_setdetachstate.3

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  26 .TH PTHREAD_ATTR_SETDETACHSTATE 3 2015-08-08 "Linux" "Linux Programmer's Manual"
  27 .SH NAME
  28 pthread_attr_setdetachstate, pthread_attr_getdetachstate \-
  29 set/get detach state attribute in thread attributes object
  30 .SH SYNOPSIS
  31 .nf
  32 .B #include <pthread.h>
  33
  34 .BI "int pthread_attr_setdetachstate(pthread_attr_t *" attr \
  35 ", int " detachstate );
  36 .BI "int pthread_attr_getdetachstate(const pthread_attr_t *" attr \
  37 ", int *" detachstate );
  38 .sp
  39 Compile and link with \fI\-pthread\fP.
  40 .fi
  41 .SH DESCRIPTION
  42 The
  43 .BR pthread_attr_setdetachstate ()
  44 function sets the detach state attribute of the
  45 thread attributes object referred to by
  46 .IR attr
  47 to the value specified in
  48 .IR detachstate .
  49 The detach state attribute determines whether a thread created using
  50 the thread attributes object
  51 .I attr
  52 will be created in a joinable or a detached state.
  53
  54 The following values may be specified in
  55 .IR detachstate :
  56 .TP
  57 .B PTHREAD_CREATE_DETACHED
  58 Threads that are created using
  59 .I attr
  60 will be created in a detached state.
  61 .TP
  62 .B PTHREAD_CREATE_JOINABLE
  63 Threads that are created using
  64 .I attr
  65 will be created in a joinable state.
  66 .PP
  67 The default setting of the detach state attribute in a newly initialized
  68 thread attributes object is
  69 .BR PTHREAD_CREATE_JOINABLE .
  70
  71 The
  72 .BR pthread_attr_getdetachstate ()
  73 returns the detach state attribute of the thread attributes object
  74 .IR attr
  75 in the buffer pointed to by
  76 .IR detachstate .
  77 .SH RETURN VALUE
  78 On success, these functions return 0;
  79 on error, they return a nonzero error number.
  80 .SH ERRORS
  81 .BR pthread_attr_setdetachstate ()
  82 can fail with the following error:
  83 .TP
  84 .B EINVAL
  85 An invalid value was specified in
  86 .IR detachstate .
  87 .SH ATTRIBUTES
  88 For an explanation of the terms used in this section, see
  89 .BR attributes (7).
  90 .TS
  91 allbox;
  92 lbw30 lb lb
  93 l l l.
  94 Interface       Attribute       Value
  95 T{
  96 .BR pthread_attr_setdetachstate (),
  97 .BR pthread_attr_getdetachstate ()
  98 T}      Thread safety   MT-Safe
  99 .TE
 100 .SH CONFORMING TO
 101 POSIX.1-2001, POSIX.1-2008.
 102 .SH NOTES
 103 See
 104 .BR pthread_create (3)
 105 for more details on detached and joinable threads.
 106
 107 A thread that is created in a joinable state should
 108 eventually either be joined using
 109 .BR pthread_join (3)
 110 or detached using
 111 .BR pthread_detach (3);
 112 see
 113 .BR pthread_create (3).
 114
 115 It is an error to specify the thread ID of
 116 a thread that was created in a detached state
 117 in a later call to
 118 .BR pthread_detach (3)
 119 or
 120 .BR pthread_join (3).
 121 .SH EXAMPLE
 122 See
 123 .BR pthread_attr_init (3).
 124 .SH SEE ALSO
 125 .BR pthread_attr_init (3),
 126 .BR pthread_create (3),
 127 .BR pthread_detach (3),
 128 .BR pthread_join (3),
 129 .BR pthreads (7)