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frees the memory of a finished task after the switch to the next task

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This commit is contained in:
Stefan Lankes 2015-08-17 12:51:39 +02:00
parent b8ecff4e4d
commit 213e4518d1
1 changed files with 9 additions and 11 deletions
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20
hermit/kernel/tasks.c
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@ -176,6 +176,14 @@ void finish_task_switch(void)
old->stack = NULL;
old->last_stack_pointer = NULL;
readyqueues[core_id].old_task = NULL;
/* cleanup task */
if (old->stack)
kfree(old->stack);
if (old->user_usage);
kfree(old->user_usage);
if (!old->parent && old->heap)
kfree(old->heap);
} else {
prio = old->prio;
if (!readyqueues[core_id].queue[prio-1].first) {
@ -205,18 +213,8 @@ static void NORETURN do_exit(int arg)
kprintf("Terminate task: %u, return value %d\n", curr_task->id, arg);
// Threads should delete the page table and the heap */
if (!curr_task->parent) {
if (!curr_task->parent)
page_map_drop();
if (curr_task->heap) {
kfree(curr_task->heap);
curr_task->heap = NULL;
}
}
if (curr_task->stack)
kfree(curr_task->stack);
if (curr_task->user_usage);
kfree(curr_task->user_usage);
// decrease the number of active tasks
spinlock_irqsave_lock(&readyqueues[core_id].lock);