Remove env_var and command_line from options #1240
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Remove env_var and command_line because they can all be set in both ways. Also renamed functions that set options by name, and removed "convenient methods" in MMTKBuilder and memory_manager.
Require T in MMTKOption<T> to implemnt FromStr because we use parse::<T>() anyway. Move Default out of macro. Update comments.
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We restore to the naming style similar to the old names.
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The extended tests passed except for JikesRVM which failed for the well-known "xxxx is not in RVM space" error. I just added a change to the API migration log, and this should be ready to merge now. I removed the |
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Removed
from_env_varandfrom_command_linefromMMTkOptionbecause now all options can be set in both ways.Replaced
Options::set_from_command_lineandOptions::set_from_env_varwith a singleOptions::set_from_string.Moved several methods of
Optionsout of theoptions!macro if they don't need to be generated via macro expansion. Now only two methods are generated by the macro.set_from_string_inner: Requires matching field names against user-provided strings.new: Initializing fields using default values.In order to replicate the behavior that
Options::read_env_var_settingssilently ignores unrecognized option keys inMMTK_*environment variables, we introduced an error typeSetOptionByStringErrorwhichOptions::set_from_string_innerreturns so thatOptions::read_env_var_settingsandOptions::set_bulk_from_stringcan behave differently when encountering invalid keys.