spinlock.h

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// MIT License
//
// Copyright (c) 2026 Christian Spoo
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

 
#ifndef _MINIOS_ARCH_X86_64_SPINLOCK_H_
#define _MINIOS_ARCH_X86_64_SPINLOCK_H_
 
#include <miniOS/types.h>

typedef struct {
    volatile uint16_t counter;
} spinlock_t;

#define SPINLOCK_INIT { .counter = 0 }

void spinlock_lock(spinlock_t *lock);

void spinlock_unlock(spinlock_t *lock);

void spinlock_irqsave(spinlock_t *lock, unsigned long *flags);

void spinlock_irqrestore(spinlock_t *lock, unsigned long flags);

void spinlock_irq(spinlock_t *lock);

void spinlock_irq_unlock(spinlock_t *lock);

 
#endif /* _MINIOS_ARCH_X86_64_SPINLOCK_H_ */