utxfmutex.c File Reference

#include "acpi.h"
#include "accommon.h"
#include "acnamesp.h"

Include dependency graph for utxfmutex.c:

Go to the source code of this file.

Macros
#define	_COMPONENT   ACPI_UTILITIES

Functions
static ACPI_STATUS	AcpiUtGetMutexObject (ACPI_HANDLE Handle, ACPI_STRING Pathname, ACPI_OPERAND_OBJECT **RetObj)
ACPI_STATUS	AcpiAcquireMutex (ACPI_HANDLE Handle, ACPI_STRING Pathname, UINT16 Timeout)
ACPI_STATUS	AcpiReleaseMutex (ACPI_HANDLE Handle, ACPI_STRING Pathname)

Macro Definition Documentation

_COMPONENT

#define _COMPONENT   ACPI_UTILITIES

Definition at line 49 of file utxfmutex.c.

Function Documentation

AcpiAcquireMutex()

ACPI_STATUS AcpiAcquireMutex	(	ACPI_HANDLE	Handle,
		ACPI_STRING	Pathname,
		UINT16	Timeout
	)

Definition at line 149 of file utxfmutex.c.

{
    ACPI_STATUS             Status;
    ACPI_OPERAND_OBJECT     *MutexObj;
 
 
    /* Get the low-level mutex associated with Handle:Pathname */
 
    Status = AcpiUtGetMutexObject (Handle, Pathname, &MutexObj);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }
 
    /* Acquire the OS mutex */
 
    Status = AcpiOsAcquireMutex (MutexObj->Mutex.OsMutex, Timeout);
    return (Status);
}

AcpiReleaseMutex()

ACPI_STATUS AcpiReleaseMutex	(	ACPI_HANDLE	Handle,
		ACPI_STRING	Pathname
	)

Definition at line 193 of file utxfmutex.c.

{
    ACPI_STATUS             Status;
    ACPI_OPERAND_OBJECT     *MutexObj;
 
 
    /* Get the low-level mutex associated with Handle:Pathname */
 
    Status = AcpiUtGetMutexObject (Handle, Pathname, &MutexObj);
    if (ACPI_FAILURE (Status))
    {
        return (Status);
    }
 
    /* Release the OS mutex */
 
    AcpiOsReleaseMutex (MutexObj->Mutex.OsMutex);
    return (AE_OK);
}

AcpiUtGetMutexObject()

static ACPI_STATUS AcpiUtGetMutexObject ( ACPI_HANDLE  Handle, ACPI_STRING  Pathname, ACPI_OPERAND_OBJECT **  RetObj  )

static

Definition at line 79 of file utxfmutex.c.

{
    ACPI_NAMESPACE_NODE     *MutexNode;
    ACPI_OPERAND_OBJECT     *MutexObj;
    ACPI_STATUS             Status;
 
 
    /* Parameter validation */
 
    if (!RetObj || (!Handle && !Pathname))
    {
        return (AE_BAD_PARAMETER);
    }
 
    /* Get a the namespace node for the mutex */
 
    MutexNode = Handle;
    if (Pathname != NULL)
    {
        Status = AcpiGetHandle (
            Handle, Pathname, ACPI_CAST_PTR (ACPI_HANDLE, &MutexNode));
        if (ACPI_FAILURE (Status))
        {
            return (Status);
        }
    }
 
    /* Ensure that we actually have a Mutex object */
 
    if (!MutexNode ||
        (MutexNode->Type != ACPI_TYPE_MUTEX))
    {
        return (AE_TYPE);
    }
 
    /* Get the low-level mutex object */
 
    MutexObj = AcpiNsGetAttachedObject (MutexNode);
    if (!MutexObj)
    {
        return (AE_NULL_OBJECT);
    }
 
    *RetObj = MutexObj;
    return (AE_OK);
}

Referenced by AcpiAcquireMutex(), and AcpiReleaseMutex().