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#include <cpu/atomic/swap.h>
#include <globals.h>
#include <lib/kmem.h>
#include <sys/schedule.h>
#include <util/mutex.h>
///unsigned char lock_mutex(struct Mutex* m, unsigned long pid)
///{
/// if (m->pid == NULL_PID) {
/// // Use currently running thread's PID if no pid given
/// if (pid == 0) {
/// struct Thread* thread = scheduler.rthread;
/// atm_lock(thread->pid, &m->pid);
/// } else {
/// atm_lock(pid, &m->pid);
/// }
/// return 0;
/// }
/// struct Thread* thread = scheduler.rthread;
/// thread->status = THREAD_MWAIT;
/// thread->mptr = m;
/// return 1;
///}
///
///// Eventually, there will need to be a hook into the scheduling mechanism
///// that checks the currently running process and check that against the
///// mutex's pid lock
///unsigned char release_mutex(struct Mutex* m, unsigned long pid)
///{
/// // Use current thread's PID if no pid
/// if (pid == 0) {
/// struct Thread* thread = scheduler.rthread;
/// if (m->pid == thread->pid) {
/// atm_release(&m->pid);
/// return 0;
/// }
/// }
/// else if (m->pid == pid) {
/// atm_release(&m->pid);
/// return 0;
/// }
/// return 1;
///}
struct Mutex* create_mutex(void* addr)
{
// Ensure aligned to word - Important for Atomic Swap
struct Mutex* m = (struct Mutex*)kmalloc(sizeof(struct Mutex));
m->addr = addr;
m->pid = 0;
return m;
}
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