ACPI_MTX_MEMORY
Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
Status = AcpiUtAcquireMutex (ACPI_MTX_MEMORY);
Status = AcpiUtReleaseMutex (ACPI_MTX_MEMORY);
if (ACPI_FAILURE (AcpiUtAcquireMutex (ACPI_MTX_MEMORY)))
(void) AcpiUtReleaseMutex (ACPI_MTX_MEMORY);