Cooperative Multitasking: Difference between revisions
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m actually fix grammAr (how ironic) |
This is co-operative multi-tasking, not pre-emptive. Changed references to "preempt" to "yield". |
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{{In_Progress}}
In this tutorial, we'll cover the creation of a co-operative (not pre-emptive) kernel-level multitasking system. That is, kernel threads and processes. The code here is specific to the IA-32 architecture.
== Requirements ==
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extern void createTask(Task*, void(*)(), uint32_t, uint32_t*);
extern void
extern void switchTask(Registers *old, Registers *new); // The function which actually switches
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== ''task.c'' ==
This file defines the actual wrappers that ''switchTask()'' uses, ''createTask()'' and ''
<source lang="c">
#include "task.h"
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static void otherMain() {
printk("Hello multitasking world!"); // Not implemented here...
}
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}
void
Task *last = runningTask;
runningTask = runningTask->next;
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void doIt() {
printk("Switching to otherTask... \n");
printk("Returned to mainTask!\n");
}
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