src/main/java/com/google/devtools/build/lib/starlarkprofiler/CpuProfilerModule.java

// Copyright 2026 The Bazel Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package com.google.devtools.build.lib.starlarkprofiler;

import com.google.devtools.build.lib.runtime.BlazeModule;
import com.google.devtools.build.lib.runtime.BlazeService;
import com.google.devtools.common.options.OptionsParsingResult;
import net.starlark.java.eval.CpuProfiler;

/** A {@link BlazeModule} responsible for installing {@link CpuProfilerNativeSupport}. */
public final class CpuProfilerModule extends BlazeModule {
  @Override
  public void globalInit(OptionsParsingResult options, Iterable<BlazeService> blazeServices) {
    for (BlazeService blazeService : blazeServices) {
      if (blazeService instanceof CpuProfilerService cpuProfilerService) {
        CpuProfiler.setNativeSupport(cpuProfilerService.getCpuProfilerNativeSupport());
        return;
      }
    }
    throw new IllegalStateException("expected CpuProfilerService to be available");
  }
}