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note
	description: "Features to access and interact with the SCOOP runtime."
	date: "$Date: 2015-06-11 02:29:55 -0700 (Thu, 11 Jun 2015) $"
	revision: "$Revision: 97458 $"

class 
	ISE_SCOOP_RUNTIME

create 
	default_create

feature -- Access

	frozen invalid_region_id: NATURAL_16
			-- The special region ID used for invalid regions.
		external
			"C macro use %"eif_scoop.h%""
		alias
			"EIF_NULL_PROCESSOR"
		end

	frozen region_id (a_object: separate ANY): NATURAL_16
			-- The region ID on which `a_object' is placed.
		do
			Result := c_region_id ($a_object.to_pointer)
		end
	
feature -- Basic operations

	pin_to_thread
			-- Pin the current processor to its own thread.
		do
			c_disable_impersonation (c_region_id ($Current.to_pointer))
		end

	pin_processor_to_thread (a_object: separate ANY)
			-- Pin the processor behind the separate object `a_object' to its own thread.
		local
			ignored: POINTER
		do
			ignored := a_object.default_pointer
			c_disable_impersonation (c_region_id ($a_object.to_pointer))
		end
	
feature {NONE} -- Implementation

	frozen c_region_id (a_object: POINTER): NATURAL_16
			-- C exxternal for the region ID of an object.
		external
			"C inline use %"eif_macros.h%""
		alias
			"return RTS_PID($a_object)"
		end

	frozen c_disable_impersonation (a_pid: NATURAL_16)
			-- C external to disable impersonation for a specific processor.
		external
			"C inline use %"eif_scoop.h%""
		alias
			"eif_scoop_set_is_impersonation_allowed ($a_pid, EIF_FALSE)"
		end
	
note
	copyright: "Copyright (c) 1984-2015, Eiffel Software and others"
	license: "Eiffel Forum License v2 (see http://www.eiffel.com/licensing/forum.txt)"
	source: "[
		Eiffel Software
		5949 Hollister Ave., Goleta, CA 93117 USA
		Telephone 805-685-1006, Fax 805-685-6869
		Website http://www.eiffel.com
		Customer support http://support.eiffel.com
	]"

end -- class ISE_SCOOP_RUNTIME


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