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System Calls getustack(2)
NAME
getustack, setustack - retrieve or change the address of
per-LWP stack boundary information
SYNOPSIS
#include <ucontext.h>
int getustack(stack_t **spp);
int setustack(stack_t *sp);
DESCRIPTION
The getustack() function retrieves the address of per-LWP
stack boundary information. The address is stored at the
location pointed to by spp. If this address has not been
defined using a previous call to setustack(), NULL is stored
at the location pointed to by spp.
The setustack() function changes the address of the current
thread's stack boundary information to the value of sp.
RETURN VALUES
Upon successful completion, these functions return 0. Other-
wise, -1 is returned and errno is set to indicate the error.
ERRORS
These functions will fail if:
EFAULT The spp or sp argument does not refer to a
valid address.
USAGE
Only implementors of custom threading libraries should use
these functions to get and set the address of the stack
bound to an internal per-thread data structure. Other users
should use stack_getbounds(3C) and stack_setbounds(3C).
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Interface Stability | Evolving |
|_____________________________|_____________________________|
| MT-Level | Async-Signal-Safe |
|_____________________________|_____________________________|
SunOS 5.10 Last change: 2 Nov 2004 1
System Calls getustack(2)
SEE ALSO
_stack_grow(3C), stack_getbounds(3C), stack_inbounds(3C),
stack_setbounds(3C), stack_violation(3C), attributes(5)
SunOS 5.10 Last change: 2 Nov 2004 2
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This page was generated on Wed Sep 12 11:27:01 GMT 2007
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