Intern trivial ActionEnvironment and EnvironmentVariables instances #15171
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When an ActionEnvironment is constructed out of an existing one, the ActionEnvironment and EnvironmentVariables instances, which are immutable, can be reused if no variables are added. Also renames addVariables and addFixedVariables to better reflect that they are operating on an immutable type.
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@comius I rebased onto master and marked this as ready for review. |
comius
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@comius Is there a public way to quickly benchmark the rough memory impact of a Bazel change? |
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You can also use https://github.com/bazelbuild/bazel-bench |
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When an ActionEnvironment is constructed out of an existing one, the ActionEnvironment and EnvironmentVariables instances, which are immutable, can be reused if no variables are added. Also renames addVariables and addFixedVariables to better reflect that they are operating on an immutable type. Closes bazelbuild#15171. PiperOrigin-RevId: 440312159
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* Specify fixedEnv/inheritedEnv interaction in ActionEnvironment Previously, ActionEnvironment did not publicly document how fixed and inherited environment variables interact, but still cautioned users to keep the two sets disjoint without enforcing this. As a result, neither could users rely on the interaction nor could ActionEnvironment benefit from the additional freedom of not specifying the behavior. With this commit, ActionEnvironment explicitly specifies that the values of environment variable inherited from the client environment take precedence over fixed values and codifies this behavior in a test. This has been the effective behavior all along and has the advantage that users can provide overrideable defaults for environment variables. Closes #15170. PiperOrigin-RevId: 439315634 * Intern trivial ActionEnvironment and EnvironmentVariables instances When an ActionEnvironment is constructed out of an existing one, the ActionEnvironment and EnvironmentVariables instances, which are immutable, can be reused if no variables are added. Also renames addVariables and addFixedVariables to better reflect that they are operating on an immutable type. Closes #15171. PiperOrigin-RevId: 440312159 * Let Starlark executable rules specify their environment The new RunEnvironmentInfo provider allows any executable or test Starlark rule to specify the environment for when it is executed, either as part of a test action or via the run command. Refactors testing.TestEnvironment to construct a RunEnvironmentInfo and adds a warning (but not an error) if the provider constructed in this way is returned from a non-executable non-test rule. If a RunEnvironmentInfo is constructed directly via the Starlark constructor, this warning becomes an error. Fixes #7364 Fixes #15224 Fixes #15225 Closes #15232. PiperOrigin-RevId: 448185352 * Fix strict deps violation ``` src/main/java/com/google/devtools/build/lib/analysis/starlark/StarlarkRuleClassFunctions.java:990: error: [strict] Using type com.google.devtools.build.lib.cmdline.LabelValidator from an indirect dependency (TOOL_INFO: "//src/main/java/com/google/devtools/build/lib/cmdline:LabelValidator"). See command below ** LabelValidator.parseAbsoluteLabel(labelString); ^ ```
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When an ActionEnvironment is constructed out of an existing one, the
ActionEnvironment and EnvironmentVariables instances, which are
immutable, can be reused if no variables are added.
Also renames addVariables and addFixedVariables to better reflect that
they are operating on an immutable type.