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Set the thread stack address attribute
#include <pthread.h>
int pthread_attr_setstackaddr( pthread_attr_t * attr,
void * stackaddr );
- attr
- A pointer to the pthread_attr_t structure that defines
the attributes to use when creating new threads.
For more information, see
pthread_attr_init().
- stackaddr
- A pointer to the block of memory that you want a new thread to use as
its stack.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The pthread_attr_setstackaddr() function sets the thread
stack address attribute in the attribute object attr to
stackaddr.
The default value for the thread stack address attribute is NULL.
A thread created with a NULL stack
address attribute will have a stack dynamically allocated by the system
of minimum size PTHREAD_STACK_MIN.
If the system allocates a stack, it reclaims the space when the thread
terminates.
If you allocate a stack, you must free it.
|
- If you provide a stack, the guardsize member of the
pthread_attr_t structure is ignored, and there's no stack
overflow protection for the thread.
- The system uses some of the provided stack for objects such as
thread local storage and an initial stack frame, so less than the entire
buffer is available to the thread.
|
- EOK
- Success.
POSIX 1003.1 THR TSA
Safety: | |
Cancellation point |
No |
Interrupt handler |
No |
Signal handler |
Yes |
Thread |
Yes |
The QNX interpretation of PTHREAD_STACK_MIN is enough memory to run a thread that does nothing:
void nothingthread( void )
{
return;
}
pthread_attr_getstackaddr(),
pthread_attr_init(),
pthread_create()
Processes and Threads
chapter of Getting Started with QNX Neutrino
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