* Copyright 2021, Haiku, Inc.
* Distributed under the terms of the MIT License.
*/
#ifndef _SMP_H_
#define _SMP_H_
#include <SupportDefs.h>
struct Mutex
{
int32 fLock;
Mutex(): fLock(0) {}
bool TryLock()
{
return atomic_test_and_set(&fLock, -1, 0) == 0;
}
bool Lock()
{
while (!TryLock()) {}
if (atomic_add(&fLock, -1) < 0) {
}
return true;
}
void Unlock()
{
atomic_add(&fLock, 1);
}
};
struct CpuInfo
{
uint32 phandle;
uint32 hartId;
uint32 plicContext;
};
CpuInfo* smp_find_cpu(uint32 phandle);
void smp_init_other_cpus(void);
void smp_boot_other_cpus(uint64 pageTable, uint64 kernel_entry);
void smp_init();
#endif
