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60 lines
2.1 KiB
60 lines
2.1 KiB
# Copyright 2019 The meson development team |
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# |
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# Licensed under the Apache License, Version 2.0 (the "License"); |
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# you may not use this file except in compliance with the License. |
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# You may obtain a copy of the License at |
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# |
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# http://www.apache.org/licenses/LICENSE-2.0 |
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# |
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# Unless required by applicable law or agreed to in writing, software |
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# distributed under the License is distributed on an "AS IS" BASIS, |
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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# See the License for the specific language governing permissions and |
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# limitations under the License. |
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"""Provides a mixin for shared code between C and C++ Emscripten compilers.""" |
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import os.path |
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import typing as T |
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from ... import coredata |
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if T.TYPE_CHECKING: |
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from ..environment import Environment |
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class EmscriptenMixin: |
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def _get_compile_output(self, dirname, mode): |
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# In pre-processor mode, the output is sent to stdout and discarded |
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if mode == 'preprocess': |
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return None |
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# Unlike sane toolchains, emcc infers the kind of output from its name. |
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# This is the only reason why this method is overridden; compiler tests |
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# do not work well with the default exe/obj suffices. |
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if mode == 'link': |
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suffix = 'js' |
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else: |
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suffix = 'wasm' |
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return os.path.join(dirname, 'output.' + suffix) |
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def thread_flags(self, env: 'Environment') -> T.List[str]: |
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return ['-s', 'USE_PTHREADS=1'] |
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def thread_link_flags(self, env: 'Environment') -> T.List[str]: |
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args = ['-s', 'USE_PTHREADS=1'] |
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count = env.coredata.compiler_options[self.for_machine]['{}_thread_count'.format(self.language)].value # type: int |
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if count: |
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args.extend(['-s', 'PTHREAD_POOL_SIZE={}'.format(count)]) |
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return args |
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def get_options(self): |
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opts = super().get_options() |
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opts.update({ |
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'{}_thread_count'.format(self.language): coredata.UserIntegerOption( |
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'Number of threads to use in web assembly, set to 0 to disable', |
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(0, None, 4), # Default was picked at random |
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), |
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}) |
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return opts
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