HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. |  |
NAME |LIBRARY |SYNOPSIS |DESCRIPTION |RETURN VALUE |ERRORS |ATTRIBUTES |VERSIONS |STANDARDS |NOTES |BUGS |EXAMPLES |SEE ALSO |COLOPHON | |
pthread_...stacksize(3) Library Functions Manualpthread_...stacksize(3)pthread_attr_setstacksize, pthread_attr_getstacksize - set/get stack size attribute in thread attributes object
POSIX threads library (libpthread,-lpthread)
#include <pthread.h>int pthread_attr_setstacksize(pthread_attr_t *attr, size_tstacksize);int pthread_attr_getstacksize(const pthread_attr_t *restrictattr,size_t *restrictstacksize);
Thepthread_attr_setstacksize() function sets the stack size attribute of the thread attributes object referred to byattr to the value specified instacksize. The stack size attribute determines the minimum size (in bytes) that will be allocated for threads created using the thread attributes objectattr. Thepthread_attr_getstacksize() function returns the stack size attribute of the thread attributes object referred to byattr in the buffer pointed to bystacksize.
On success, these functions return 0; on error, they return a nonzero error number.
pthread_attr_setstacksize() can fail with the following error:EINVALThe stack size is less thanPTHREAD_STACK_MIN(16384) bytes. On some systems,pthread_attr_setstacksize() can fail with the errorEINVALifstacksize is not a multiple of the system page size.
For an explanation of the terms used in this section, seeattributes(7). ┌──────────────────────────────────────┬───────────────┬─────────┐ │Interface│Attribute│Value│ ├──────────────────────────────────────┼───────────────┼─────────┤ │pthread_attr_setstacksize(), │ Thread safety │ MT-Safe │ │pthread_attr_getstacksize() │ │ │ └──────────────────────────────────────┴───────────────┴─────────┘
These functions are provided since glibc 2.1.
POSIX.1-2001, POSIX.1-2008.
For details on the default stack size of new threads, seepthread_create(3). A thread's stack size is fixed at the time of thread creation. Only the main thread can dynamically grow its stack. Thepthread_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.
As at glibc 2.8, if the specifiedstacksize is not a multiple ofSTACK_ALIGN(16 bytes on most architectures), it may be roundeddownward, in violation of POSIX.1, which says that the allocated stack will be at leaststacksize bytes.
Seepthread_create(3).
getrlimit(2),pthread_attr_init(3),pthread_attr_setguardsize(3),pthread_attr_setstack(3),pthread_create(3),pthreads(7)
This page is part of theman-pages (Linux kernel and C library user-space interface documentation) project. Information about the project can be found at ⟨https://www.kernel.org/doc/man-pages/⟩. If you have a bug report for this manual page, see ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩. This page was obtained from the tarball man-pages-6.15.tar.gz fetched from ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on 2025-08-11. If you discover any rendering problems in this HTML version of the page, or you believe there is a better or more up- to-date source for the page, or you have corrections or improvements to the information in this COLOPHON (which isnot part of the original manual page), send a mail to man-pages@man7.orgLinux man-pages 6.15 2025-05-17pthread_...stacksize(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)
HTML rendering created 2025-09-06 byMichael Kerrisk, author ofThe Linux Programming Interface. For details of in-depthLinux/UNIX system programming training courses that I teach, lookhere. Hosting byjambit GmbH. | |