_get_sbh_threshold
Returns the upper limit for the size of a memory allocation that is supported by the small-block heap.
size_t _get_sbh_threshold( void );
_get_sbh_threshold gets the current threshold value for the small-block heap. The default threshold size is 1016 bytes for Windows 95, Windows 98, Windows Millennium Edition, and Windows NT 4.0 and zero for Windows 2000 and later platforms. By default, the small-block heap is not used on Windows 2000 and later platforms, though _set_sbh_threshold can be called with a nonzero value to enable the small-block heap in those instances.
| Routine | Required header | Compatibility |
|---|---|---|
| _get_sbh_threshold | <malloc.h> | Windows 95, Windows 98, Windows 98 Second Edition, Windows Millennium Edition, Windows NT 4.0, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 |
For more compatibility information, see Compatibility in the Introduction.
This program shows how to retrieve the upper limit for the size of a memory allocation that is supported by the small-block heap.
// crt__get_sbh_threshold.c
#include <stdio.h>
#include <malloc.h>
int main( void )
{
size_t sbh_threshold;
sbh_threshold = _get_sbh_threshold();
printf( "The upper limit for the size of a memory allocation is %d.\n", sbh_threshold);
}
Output
The upper limit for the size of a memory allocation is 0.
Not applicable. To call the standard C function, use PInvoke. For more information, see Platform Invoke Examples.
