89 lines
3.5 KiB
Python
89 lines
3.5 KiB
Python
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# Copyright (C) 2012 Intel Corporation
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice (including the next
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# paragraph) shall be included in all copies or substantial portions of the
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# Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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# IN THE SOFTWARE.
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# marshal_XML.py: factory for interpreting XML for the purpose of
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# building thread marshalling code.
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import gl_XML
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class marshal_item_factory(gl_XML.gl_item_factory):
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"""Factory to create objects derived from gl_item containing
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information necessary to generate thread marshalling code."""
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def create_function(self, element, context):
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return marshal_function(element, context)
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class marshal_function(gl_XML.gl_function):
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def process_element(self, element):
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# Do normal processing.
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super(marshal_function, self).process_element(element)
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# Only do further processing when we see the canonical
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# function name.
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if element.get('name') != self.name:
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return
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# Classify fixed and variable parameters.
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self.fixed_params = []
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self.variable_params = []
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for p in self.parameters:
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if p.is_padding:
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continue
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if p.is_variable_length():
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self.variable_params.append(p)
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else:
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self.fixed_params.append(p)
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# Store the "marshal" attribute, if present.
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self.marshal = element.get('marshal')
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self.marshal_sync = element.get('marshal_sync')
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self.marshal_call_before = element.get('marshal_call_before')
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self.marshal_call_after = element.get('marshal_call_after')
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def marshal_flavor(self):
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"""Find out how this function should be marshalled between
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client and server threads."""
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# If a "marshal" attribute was present, that overrides any
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# determination that would otherwise be made by this function.
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if self.marshal is not None:
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return self.marshal
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if self.exec_flavor == 'skip':
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# Functions marked exec="skip" are not yet implemented in
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# Mesa, so don't bother trying to marshal them.
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return 'skip'
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if self.return_type != 'void':
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return 'sync'
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for p in self.parameters:
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if p.is_output:
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return 'sync'
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if (p.is_pointer() and not (p.count or p.counter or p.marshal_count)):
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return 'sync'
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if p.count_parameter_list and not p.marshal_count:
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# Parameter size is determined by enums; haven't
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# written logic to handle this yet. TODO: fix.
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return 'sync'
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return 'async'
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