klish/lub/heap/vxworks/heap_clean_stacks.c

#include <string.h>

#include <taskLib.h>

#include "../private.h"

#define MAX_TASKS 1024

/* 
 * We use global variables to avoid having anything from this
 * procedure on the stack as we are clearing it!!!
 * We are task locked so these shouldn't get corrupted 
 */

static int id_list[MAX_TASKS];
static int i, num_tasks;
static TASK_DESC info;
static char *p;
static unsigned delta;

/*--------------------------------------------------------- */
void lub_heap_clean_stacks(void)
{
	/* disable task switching */
	taskLock();

	num_tasks = taskIdListGet(id_list, MAX_TASKS);

	/* deschedule to ensure that the current task stack details are upto date */
	taskDelay(1);

	/* iterate round the tasks in the system */
	for (i = 0; i < num_tasks; i++) {
		if (OK == taskInfoGet(id_list[i], &info)) {
			p = info.td_pStackBase - info.td_stackHigh;
			delta = info.td_stackHigh - info.td_stackCurrent;
			/* now clean the stack */
			for (; delta--; p++) {
				*p = 0xCC;
			}
		}
	}

	/* reenable task switching */
	taskUnlock();
}

/*--------------------------------------------------------- */