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import java.util.spi.ToolProvider;

// This program is executed by make/RunTests.gmk to support running HotSpot tests
// in the "AOT mode", for example:
//
//     make test JTREG=AOT_JDK=true TEST=open/test/hotspot/jtreg/runtime/invokedynamic
//
// All JDK classes touched by this program will be stored into a customized AOT cache.
// This is a larger set of classes than those stored in the JDK's default CDS archive.
// This customized cache can also have additional optimizations that are not
// enabled in the default CDS archive. For example, AOT-linked classes and lambda
// expressions. In the future, it can also contain AOT profiles and AOT compiled methods.
//
// We can use this customized AOT cache to run various HotSpot tests to improve
// coverage on AOT.
//
// Note that make/RunTests.gmk loads this class using an implicit classpath of ".", so
// this class will be excluded from the customized AOT cache. As a result,
// the customized AOT cache contains *only* classes from the JDK itself.

public class TestSetupAOT {
    public static void main(String[] args) throws Throwable {
        String[] tools = {
            "javac", "javap", "jlink", "jar",
        };
        // TODO: we should do more substantial work than just running with "--help".
        // E.g., use javac to compile a program.
        for (String tool : tools) {
            ToolProvider t = ToolProvider.findFirst(tool)
                .orElseThrow(() -> new RuntimeException(tool + " not found"));
            t.run(System.out, System.out, "--help");
        }
    }
}