pthread_attr_getstacksize(3)

1PTHREAD_ATTR_SETSTACKSIZE(3)Linux Programmer's ManuaPlTHREAD_ATTR_SETSTACKSIZE(3)
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NAME

6       pthread_attr_setstacksize,  pthread_attr_getstacksize  -  set/get stack
7       size attribute in thread attributes object
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SYNOPSIS

10       #include <pthread.h>
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12       int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
13       int pthread_attr_getstacksize(const pthread_attr_t *restrict attr,
14                                     size_t *restrict stacksize);
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16       Compile and link with -pthread.
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DESCRIPTION

19       The pthread_attr_setstacksize() function sets the stack size  attribute
20       of the thread attributes object referred to by attr to the value speci‐
21       fied in stacksize.
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23       The stack size attribute determines the minimum size  (in  bytes)  that
24       will  be  allocated for threads created using the thread attributes ob‐
25       ject attr.
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27       The pthread_attr_getstacksize() function returns the stack size  attri‐
28       bute  of the thread attributes object referred to by attr in the buffer
29       pointed to by stacksize.
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RETURN VALUE

32       On success, these functions return 0; on error, they return  a  nonzero
33       error number.
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ERRORS

36       pthread_attr_setstacksize() can fail with the following error:
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38       EINVAL The stack size is less than PTHREAD_STACK_MIN (16384) bytes.
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40       On  some  systems,  pthread_attr_setstacksize() can fail with the error
41       EINVAL if stacksize is not a multiple of the system page size.
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VERSIONS

44       These functions are provided by glibc since version 2.1.
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ATTRIBUTES

47       For an  explanation  of  the  terms  used  in  this  section,  see  at‐
48       tributes(7).
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50       ┌────────────────────────────────────────────┬───────────────┬─────────┐
51       │Interface                                   │ Attribute     │ Value   │
52       ├────────────────────────────────────────────┼───────────────┼─────────┤
53       │pthread_attr_setstacksize(),                │ Thread safety │ MT-Safe │
54       │pthread_attr_getstacksize()                 │               │         │
55       └────────────────────────────────────────────┴───────────────┴─────────┘
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CONFORMING TO

58       POSIX.1-2001, POSIX.1-2008.
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NOTES

61       For details on the default stack size of new threads, see  pthread_cre‐
62       ate(3).
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64       A  thread's  stack  size is fixed at the time of thread creation.  Only
65       the main thread can dynamically grow its stack.
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67       The pthread_attr_setstack(3) function allows an application to set both
68       the size and location of a caller-allocated stack that is to be used by
69       a thread.
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BUGS

72       As at glibc 2.8, if the  specified  stacksize  is  not  a  multiple  of
73       STACK_ALIGN  (16  bytes on most architectures), it may be rounded down‐
74       ward, in violation of POSIX.1, which says that the allocated stack will
75       be at least stacksize bytes.
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EXAMPLES

78       See pthread_create(3).
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COLOPHON

85       This page is part of release 5.12 of the Linux  man-pages  project.   A
86       description  of  the project, information about reporting bugs, and the
87       latest    version    of    this    page,    can     be     found     at
88       https://www.kernel.org/doc/man-pages/.
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92Linux                             2021-03-22      PTHREAD_ATTR_SETSTACKSIZE(3)