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PTHREAD_ATTR_SETSTACKSIZE(3Linux Programmer's ManuPTHREAD_ATTR_SETSTACKSIZE(3)
NAME
pthread_attr_setstacksize, pthread_attr_getstacksize - set/get stack
size attribute in thread attributes object
SYNOPSIS
#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
The pthread_attr_setstacksize() function sets the stack size attribute
of the thread attributes object referred to by attr to the value speci-
fied 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
On success, these functions return 0; on error, they return a nonzero
error number.
ERRORS
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
These functions are provided by glibc since version 2.1.
ATTRIBUTES
Multithreading (see pthreads(7))
The pthread_attr_setstacksize() and pthread_attr_getstacksize() func-
tions are thread-safe.
CONFORMING TO
POSIX.1-2001.
NOTES
For details on the default stack size of new threads, see pthread_cre-
ate(3).
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
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 down-
ward, in violation of POSIX.1-2001, which says that the allocated stack
will be at least stacksize bytes.
EXAMPLE
See pthread_create(3).
SEE ALSO
getrlimit(2), pthread_attr_init(3), pthread_attr_setguardsize(3),
pthread_attr_setstack(3), pthread_create(3), pthreads(7)
COLOPHON
This page is part of release 3.69 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
http://www.kernel.org/doc/man-pages/.
Linux 2014-05-28 PTHREAD_ATTR_SETSTACKSIZE(3)
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