from small one page howto to huge articles all in one place
 

search text in:





Poll
Which filesystem do you use?






poll results

Last additions:
using iotop to find disk usage hogs

using iotop to find disk usage hogs

words:

887

views:

95112

userrating:

average rating: 1.7 (83 votes) (1=very good 6=terrible)


May 25th. 2007:
Words

486

Views

210617

why adblockers are bad


Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

Workaround and fixes for the current Core Dump Handling vulnerability affected kernels

words:

161

views:

92052

userrating:

average rating: 1.3 (28 votes) (1=very good 6=terrible)


April, 26th. 2006:

Druckversion
You are here: manpages





PTHREAD_ATTR_SETSTACK

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
Index Return to Main Contents
 

NAME

pthread_attr_setstack, pthread_attr_getstack - set/get stack attributes in thread attributes object  

SYNOPSIS

#include <pthread.h>

int pthread_attr_setstack(pthread_attr_t *attr,
                          void *stackaddr, size_t stacksize);
int pthread_attr_getstack(const pthread_attr_t *attr,
                          void **stackaddr, size_t *stacksize);

Compile and link with -pthread.

Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

pthread_attr_getstack(), pthread_attr_setstack():

_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600
 

DESCRIPTION

The pthread_attr_setstack() function sets the stack address and stack size attributes of the thread attributes object referred to by attr to the values specified in stackaddr and stacksize, respectively. These attributes specify the location and size of the stack that should be used by a thread that is created using the thread attributes object attr.

stackaddr should point to the lowest addressable byte of a buffer of stacksize bytes that was allocated by the caller. The pages of the allocated buffer should be both readable and writable.

The pthread_attr_getstack() function returns the stack address and stack size attributes of the thread attributes object referred to by attr in the buffers pointed to by stackaddr and stacksize, respectively.  

RETURN VALUE

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

ERRORS

pthread_attr_setstack() can fail with the following error:
EINVAL
stacksize is less than PTHREAD_STACK_MIN (16384) bytes. On some systems, this error may also occur if stackaddr or stackaddr + stacksize is not suitably aligned.

POSIX.1-2001 also documents an EACCES error if the stack area described by stackaddr and stacksize is not both readable and writable by the caller.  

VERSIONS

These functions are provided by glibc since version 2.2.  

ATTRIBUTES

For an explanation of the terms used in this section, see attributes(7).
InterfaceAttributeValue
pthread_attr_setstack(), pthread_attr_getstack() Thread safetyMT-Safe
 

CONFORMING TO

POSIX.1-2001.  

NOTES

These functions are provided for applications that must ensure that a thread's stack is placed in a particular location. For most applications, this is not necessary, and the use of these functions should be avoided. (Use pthread_attr_setstacksize(3) if an application simply requires a stack size other than the default.)

When an application employs pthread_attr_setstack(), it takes over the responsibility of allocating the stack. Any guard size value that was set using pthread_attr_setguardsize(3) is ignored. If deemed necessary, it is the application's responsibility to allocate a guard area (one or more pages protected against reading and writing) to handle the possibility of stack overflow.

The address specified in stackaddr should be suitably aligned: for full portability, align it on a page boundary (sysconf(_SC_PAGESIZE)). posix_memalign(3) may be useful for allocation. Probably, stacksize should also be a multiple of the system page size.

If attr is used to create multiple threads, then the caller must change the stack address attribute between calls to pthread_create(3); otherwise, the threads will attempt to use the same memory area for their stacks, and chaos will ensue.  

EXAMPLE

See pthread_attr_init(3).  

SEE ALSO

mmap(2), mprotect(2), posix_memalign(3), pthread_attr_init(3), pthread_attr_setguardsize(3), pthread_attr_setstackaddr(3), pthread_attr_setstacksize(3), pthread_create(3), pthreads(7)  

COLOPHON

This page is part of release 3.81 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/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
VERSIONS
ATTRIBUTES
CONFORMING TO
NOTES
EXAMPLE
SEE ALSO
COLOPHON


Please read "Why adblockers are bad".



Other free services
toURL.org
Shorten long
URLs to short
links like
http://tourl.org/2
tourl.org
.
Reverse DNS lookup
Find out which hostname(s)
resolve to a
given IP or other hostnames for the server
www.reversednslookup.org
rdf newsfeed | rss newsfeed | Atom newsfeed
- Powered by LeopardCMS - Running on Gentoo -
Copyright 2004-2013 Sascha Nitsch Unternehmensberatung UG(haftungsbeschränkt)
Valid XHTML1.1 : Valid CSS : buttonmaker
- Level Triple-A Conformance to Web Content Accessibility Guidelines 1.0 -
- Copyright and legal notices -
Time to create this page: 3.9 ms