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pthread_attr_setstacksize(3c) [sunos man page]

pthread_attr_getstacksize(3C)											     pthread_attr_getstacksize(3C)

pthread_attr_getstacksize, pthread_attr_setstacksize - get or set stacksize attribute SYNOPSIS
cc -mt [ flag... ] file... -lpthread [ library... ] #include <pthread.h> int pthread_attr_getstacksize(const pthread_attr_t *restrict attr, size_t *restrict stacksize); int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize); The functions pthread_attr_setstacksize() and pthread_attr_getstacksize(), respectively, set and get the thread creation stacksize attribute in the attr object. The stacksize attribute defines the minimum stack size (in bytes) allocated for the created threads stack. When the stacksize argument is NULL, the default stack size becomes 1 megabyte for 32-bit processes and 2 megabytes for 64-bit processes. Upon successful completion, pthread_attr_setstacksize() and pthread_attr_getstacksize() return a value of 0. Otherwise, an error number is returned to indicate the error. The pthread_attr_getstacksize() function stores the stacksize attribute value in stacksize if successful. The pthread_attr_setstacksize() or pthread_attr_getstacksize() function may fail if: EINVAL attr or stacksize is invalid. See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ |MT-Level |MT-Safe | +-----------------------------+-----------------------------+ pthread_attr_init(3C), pthread_attr_setstackaddr(3C), pthread_attr_setdetachstate(3C), pthread_create(3C), attributes(5), standards(5) 23 Mar 2005 pthread_attr_getstacksize(3C)

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PTHREAD_ATTR_SETSTACKSIZE(3)				     Linux Programmer's Manual				      PTHREAD_ATTR_SETSTACKSIZE(3)

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 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
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
For an explanation of the terms used in this section, see attributes(7). +-----------------------------+---------------+---------+ |Interface | Attribute | Value | +-----------------------------+---------------+---------+ |pthread_attr_setstacksize(), | Thread safety | MT-Safe | |pthread_attr_getstacksize() | | | +-----------------------------+---------------+---------+ CONFORMING TO
POSIX.1-2001, POSIX.1-2008. NOTES
For details on the default stack size of new threads, see pthread_create(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 downward, in violation of POSIX.1, 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 4.15 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 2017-09-15 PTHREAD_ATTR_SETSTACKSIZE(3)

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