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cache source on import of modules that may contain kernels. Closes #416
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55
artiq/compiler/import_cache.py
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55
artiq/compiler/import_cache.py
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@ -0,0 +1,55 @@
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import sys
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import builtins
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import linecache
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import tokenize
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import logging
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import importlib.machinery as im
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from artiq.experiment import kernel, portable
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__all__ = ["install_hook"]
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logger = logging.getLogger(__name__)
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cache = dict()
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im_exec_module = None
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linecache_getlines = None
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def hook_exec_module(self, module):
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im_exec_module(self, module)
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if (hasattr(module, "__file__")
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# Heuristic to determine if the module may contain ARTIQ kernels.
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# This breaks if kernel is not imported the usual way.
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and ((getattr(module, "kernel", None) is kernel)
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or (getattr(module, "portable", None) is portable))):
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fn = module.__file__
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try:
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with tokenize.open(fn) as fp:
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cache[fn] = fp.readlines()
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except:
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logger.warning("failed to add '%s' to cache", fn, exc_info=True)
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else:
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logger.debug("added '%s' to cache", fn)
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def hook_getlines(filename, module_globals=None):
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if filename in cache:
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return cache[filename]
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else:
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return linecache_getlines(filename, module_globals)
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def install_hook():
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global im_exec_module, linecache_getlines
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im_exec_module = im.SourceFileLoader.exec_module
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im.SourceFileLoader.exec_module = hook_exec_module
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linecache_getlines = linecache.getlines
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linecache.getlines = hook_getlines
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logger.debug("hook installed")
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@ -19,6 +19,7 @@ from artiq.master.worker_db import DeviceManager, DatasetManager
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from artiq.coredevice.core import CompileError, host_only
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from artiq.compiler.embedding import EmbeddingMap
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from artiq.compiler.targets import OR1KTarget
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from artiq.compiler import import_cache
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from artiq.tools import *
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@ -158,6 +159,7 @@ def _build_experiment(device_mgr, dataset_mgr, args):
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elif is_bc:
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return LLVMBitcodeRunner(device_mgr, dataset_mgr, file=args.file)
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else:
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import_cache.install_hook()
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module = file_import(args.file, prefix="artiq_run_")
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file = args.file
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else:
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@ -43,6 +43,9 @@ def kernel(arg=None, flags={}):
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The decorator takes an optional parameter that defaults to ``core`` and
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specifies the name of the attribute to use as core device driver.
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This decorator must be present in the global namespace of all modules using
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it for the import cache to work properly.
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"""
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if isinstance(arg, str):
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def inner_decorator(function):
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@ -70,6 +73,9 @@ def portable(arg=None, flags={}):
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host will be executed on the host (no compilation and execution on the
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core device). A decorated function called from a kernel will be executed
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on the core device (no RPC).
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This decorator must be present in the global namespace of all modules using
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it for the import cache to work properly.
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"""
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if arg is None:
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def inner_decorator(function):
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@ -16,6 +16,7 @@ from artiq.language.environment import (is_experiment, TraceArgumentManager,
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ProcessArgumentManager)
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from artiq.language.core import set_watchdog_factory, TerminationRequested
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from artiq.language.types import TBool
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from artiq.compiler import import_cache
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from artiq.coredevice.core import CompileError, host_only, _render_diagnostic
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from artiq import __version__ as artiq_version
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@ -191,6 +192,8 @@ def main():
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virtual_devices={"scheduler": Scheduler()})
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dataset_mgr = DatasetManager(ParentDatasetDB)
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import_cache.install_hook()
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try:
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while True:
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obj = get_object()
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