Semaphore.h File Reference

Semaphore structure and functions for synchronization in the kernel. More...

#include <CompilerKit/CompilerKit.h>
#include <KernelKit/Timer.h>
#include <NeKit/Config.h>

Go to the source code of this file.

Namespaces
namespace	Kernel
	UPS inline definitions.

Macros
#define	kSemaphoreOwnerIndex   (0U)
#define	kSemaphoreCountIndex   (1U)
#define	kSemaphoreCount   (2U)
#define	kSemaphoreIncrementOwner(sem)
#define	kSemaphoreDecrementOwner(sem)

Typedefs
typedef UInt64	Kernel::SemaphoreArr[kSemaphoreCount]
	Semaphore structure used for synchronization.

Functions
BOOL	Kernel::rtl_sem_is_valid (const SemaphoreArr &sem, UInt64 owner=0)
	Checks if the semaphore is valid.
BOOL	Kernel::rtl_sem_release (SemaphoreArr &sem)
	Releases the semaphore, resetting its owner and count.
BOOL	Kernel::rtl_sem_acquire (SemaphoreArr &sem, UInt64 owner)
	Initializes the semaphore with an owner and a count of zero.
BOOL	Kernel::rtl_sem_wait (SemaphoreArr &sem, UInt64 owner, UInt64 timeout, BOOL *condition=nullptr)
	Waits for the semaphore to be available, blocking until it is.

Detailed Description

Semaphore structure and functions for synchronization in the kernel.

Author

Amlal El Mahrouss

Macro Definition Documentation

kSemaphoreCount

#define kSemaphoreCount   (2U)

kSemaphoreCountIndex

#define kSemaphoreCountIndex   (1U)

kSemaphoreDecrementOwner

#define kSemaphoreDecrementOwner

(

sem

)

Value:

(sem[kSemaphoreOwnerIndex]--)

kSemaphoreIncrementOwner

#define kSemaphoreIncrementOwner

(

sem

)

Value:

(sem[kSemaphoreOwnerIndex]++)

kSemaphoreOwnerIndex

#define kSemaphoreOwnerIndex   (0U)