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pthread_attr_setstacksize, pthread_attr_getstacksize - set/get stack
size attribute in thread attributes object
int pthread_attr_setstacksize(pthread_attr_t *attr, size_t stacksize);
int pthread_attr_getstacksize(pthread_attr_t *attr, size_t *stacksize);
Compile and link with -pthread.
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
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.
On success, these functions return 0; on error, they return a nonzero
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.
These functions are provided by glibc since version 2.1.
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
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.1-2001, which says that the allocated
stack will be at least stacksize bytes.
getrlimit(2), pthread_attr_init(3), pthread_attr_setguardsize(3),
pthread_attr_setstack(3), pthread_create(3), pthreads(7)
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