NAME         top

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

SYNOPSIS         top

       #include <pthread.h>

       int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
       int pthread_attr_getstacksize(const pthread_attr_t *attr, size_t *stacksize);

       Compile and link with -pthread.

DESCRIPTION         top

       The pthread_attr_setstacksize() function sets the stack size
       attribute of the thread attributes object referred to by attr to the
       value specified in stacksize.

       The stack size attribute determines the minimum size (in bytes) that
       will be allocated for threads created using the thread attributes
       object attr.

       The pthread_attr_getstacksize() function returns the stack size
       attribute of the thread attributes object referred to by attr in the
       buffer pointed to by stacksize.

RETURN VALUE         top

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

ERRORS         top

       pthread_attr_setstacksize() can fail with the following error:

       EINVAL The stack size is less than PTHREAD_STACK_MIN (16384) bytes.

       On some systems, pthread_attr_setstacksize() can fail with the error
       EINVAL if stacksize is not a multiple of the system page size.

VERSIONS         top

       These functions are provided by glibc since version 2.1.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see

       │Interface                    Attribute     Value   │
       │pthread_attr_setstacksize(), │ Thread safety │ MT-Safe │
       │pthread_attr_getstacksize()  │               │         │

CONFORMING TO         top

       POSIX.1-2001, POSIX.1-2008.

NOTES         top

       For details on the default stack size of new threads, see

       A thread's stack size is fixed at the time of thread creation.  Only
       the main thread can dynamically grow its stack.

       The pthread_attr_setstack(3) function allows an application to set
       both the size and location of a caller-allocated stack that is to be
       used by a thread.

BUGS         top

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

EXAMPLE         top

       See pthread_create(3).

SEE ALSO         top

       getrlimit(2), pthread_attr_init(3), pthread_attr_setguardsize(3),
       pthread_attr_setstack(3), pthread_create(3), pthreads(7)

COLOPHON         top

       This page is part of release 4.11 of the Linux man-pages project.  A
       description of the project, information about reporting bugs, and the
       latest version of this page, can be found at

Linux                            2015-08-08     PTHREAD_ATTR_SETSTACKSIZE(3)

Pages that refer to this page: pthread_attr_init(3)pthread_attr_setguardsize(3)pthread_attr_setstack(3)pthread_attr_setstackaddr(3)pthread_create(3)pthread_getattr_default_np(3)pthread_getattr_np(3)