This patch contains:

This patch contains:

	SafeHandle implemenation
		http://www.mono-project.com/SafeHandles for status

	WaitHandle updates for using with new SafeWaitHandle.

	Marshal replaces g_error with exceptions in a few areas.

2006-12-15  Miguel de Icaza  <miguel@novell.com>

	* marshal.c (mono_free_bstr): On Unix, this is g_free.
	(mono_string_from_bstr, mono_string_to_bstr): Implement bstr
	conversions (for the tests in corlib to pass).

2006-12-14  Miguel de Icaza  <miguel@novell.com>

	* marshal.c (emit_ptr_to_object_conv): For now, ignore
	MONO_MARSHAL_CONV_SAFEHANDLE on return values (we need to throw an
	exception if a ref SafeHandle in a struct has changed).

	(emit_struct_conv): Do not perform layout checks for classes
	derived from SafeHandle, as those are specially handled.

	(emit_object_to_ptr_conv): Add support for
	MONO_MARSHAL_CONV_SAFEHANDLE conversion.

	(emit_marshal_safehandle): Implement conversion of return values
	of safehandles (MARSHAL_ACTION_CONV_RESULT).

	* threads.c: WaitHandle now is compiled with two different handles
	"IntPtr os_handle" for 1.x and "SafeWaitHandle safe_wait_handle"
	for 2.0.

	(ves_icall_System_Threading_WaitHandle_WaitAll_internal)
	(ves_icall_System_Threading_WaitHandle_WaitAny_internal): Adjust
	these routines to cope with both kinds of fields.

2006-12-12  Miguel de Icaza  <miguel@novell.com>

	* metadata.c (mono_type_to_unmanaged): Handle the case where
	type->data.klass is a SafeHandle, and in that case, return the
	size of a pointer (MONO_NATIVE_INT) and set the conversion to be
	MONO_MARSHAL_CONV_SAFEHANDLE.

2006-12-11  Miguel de Icaza  <miguel@novell.com>

	* marshal.c (emit_marshal): Hook up to the MONO_TYPE_CLASS and
	MONO_TYPE_OBJECT cases and check for a SafeHandle here before
	calling emit_marshal_object.

	(emit_marshal_safehandle): Implement marshalling of
	SafeHandle parameters (no ref support yet).

	(MarshalAction): Document the defines as I implement
	them for SafeHandle.

	(emit_marshal_object): indentation police.

	* class-internals.h: Define MonoSafeHandle.
	Add safehandle_class to MonoDefaults type.

	* verify.c: Add System.Runtime.InteropServices.SafeHandle to the
	list of classes to check for fields.

	* domain.c (mono_init_internal): Add SafeHandle to the list of
	mono_defaults loaded.

svn path=/trunk/mono/; revision=69551