man3/pthread_attr_setstackaddr.3

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  26 .TH PTHREAD_ATTR_SETSTACKADDR 3 2017-09-15 "Linux" "Linux Programmer's Manual"
  27 .SH NAME
  28 pthread_attr_setstackaddr, pthread_attr_getstackaddr \-
  29 set/get stack address attribute in thread attributes object
  30 .SH SYNOPSIS
  31 .nf
  32 .B #include <pthread.h>
  33 .PP
  34 .BI "int pthread_attr_setstackaddr(pthread_attr_t *" attr \
  35 ", void *" stackaddr );
  36 .BI "int pthread_attr_getstackaddr(const pthread_attr_t *" attr \
  37 ", void **" stackaddr );
  38 .PP
  39 Compile and link with \fI\-pthread\fP.
  40 .fi
  41 .SH DESCRIPTION
  42 These functions are obsolete:
  43 .B do not use them.
  44 Use
  45 .BR pthread_attr_setstack (3)
  46 and
  47 .BR pthread_attr_getstack (3)
  48 instead.
  49 .PP
  50 The
  51 .BR pthread_attr_setstackaddr ()
  52 function sets the stack address attribute of the
  53 thread attributes object referred to by
  54 .I attr
  55 to the value specified in
  56 .IR stackaddr .
  57 This attribute specifies the location of the stack that should
  58 be used by a thread that is created using the thread attributes object
  59 .IR attr .
  60 .PP
  61 .I stackaddr
  62 should point to a buffer of at least
  63 .B PTHREAD_STACK_MIN
  64 bytes that was allocated by the caller.
  65 The pages of the allocated buffer should be both readable and writable.
  66 .PP
  67 The
  68 .BR pthread_attr_getstackaddr ()
  69 function returns the stack address attribute of the
  70 thread attributes object referred to by
  71 .I attr
  72 in the buffer pointed to by
  73 .IR stackaddr .
  74 .SH RETURN VALUE
  75 On success, these functions return 0;
  76 on error, they return a nonzero error number.
  77 .SH ERRORS
  78 No errors are defined
  79 (but applications should nevertheless
  80 handle a possible error return).
  81 .SH VERSIONS
  82 These functions are provided by glibc since version 2.1.
  83 .SH ATTRIBUTES
  84 For an explanation of the terms used in this section, see
  85 .BR attributes (7).
  86 .TS
  87 allbox;
  88 lbw28 lb lb
  89 l l l.
  90 Interface       Attribute       Value
  91 T{
  92 .BR pthread_attr_setstackaddr (),
  93 .BR pthread_attr_getstackaddr ()
  94 T}      Thread safety   MT-Safe
  95 .TE
  96 .SH CONFORMING TO
  97 POSIX.1-2001 specifies these functions but marks them as obsolete.
  98 POSIX.1-2008 removes the specification of these functions.
  99 .SH NOTES
 100 .I Do not use these functions!
 101 They cannot be portably used, since they provide no way of specifying
 102 the direction of growth or the range of the stack.
 103 For example, on architectures with a stack that grows downward,
 104 .I stackaddr
 105 specifies the next address past the
 106 .I highest
 107 address of the allocated stack area.
 108 However, on architectures with a stack that grows upward,
 109 .I stackaddr
 110 specifies the
 111 .I lowest
 112 address in the allocated stack area.
 113 By contrast, the
 114 .I stackaddr
 115 used by
 116 .BR pthread_attr_setstack (3)
 117 and
 118 .BR pthread_attr_getstack (3),
 119 is always a pointer to the lowest address in the allocated stack area
 120 (and the
 121 .I stacksize
 122 argument specifies the range of the stack).
 123 .SH SEE ALSO
 124 .BR pthread_attr_init (3),
 125 .BR pthread_attr_setstack (3),
 126 .BR pthread_attr_setstacksize (3),
 127 .BR pthread_create (3),
 128 .BR pthreads (7)