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package com.oracle.truffle.api;
import java.security.AccessController;
import java.security.PrivilegedAction;
import com.oracle.truffle.api.nodes.NodeCost;
import com.oracle.truffle.api.nodes.NodeInfo;
/**
* Class containing general Truffle options.
*
* @since 0.8 or earlier
*/
public final class TruffleOptions {
private TruffleOptions() {
}
/**
* Enables/disables the rewriting of traces in the Truffle runtime to stdout.
*
* Can be set with {@code -Dtruffle.TraceRewrites=true}.
*
* @since 0.8 or earlier
*/
public static final boolean TraceRewrites;
/**
* Enables the generation of detailed rewrite reasons. Enabling this may introduce some overhead
* for rewriting nodes.
*
* Can be set with {@code -Dtruffle.DetailedRewriteReasons=true}.
*
* @since 0.8 or earlier
*/
public static final boolean DetailedRewriteReasons;
/**
* Filters rewrites that do not contain the given string in the qualified name of the source or
* target class hierarchy.
*
* Can be set with {@code -Dtruffle.TraceRewritesFilterClass=name}.
*
* @since 0.8 or earlier
*/
public static final String TraceRewritesFilterClass;
/**
* Filters rewrites which does not contain the {@link NodeCost} in its source {@link NodeInfo}.
* If no {@link NodeInfo} is defined the element is filtered if the filter value is set.
*
* Can be set with
* {@code -Dtruffle.TraceRewritesFilterFromCost=NONE|MONOMORPHIC|POLYMORPHIC|MEGAMORPHIC}.
*
* @since 0.8 or earlier
*/
public static final NodeCost TraceRewritesFilterFromCost;
/**
* Filters rewrites which does not contain the {@link NodeCost} in its target {@link NodeInfo}.
* If no {@link NodeInfo} is defined the element is filtered if the filter value is set.
*
* Can be set with
* {@code -Dtruffle.TraceRewritesFilterToKind=UNINITIALIZED|SPECIALIZED|POLYMORPHIC|GENERIC}.
*
* @since 0.8 or earlier
*/
public static final NodeCost TraceRewritesFilterToCost;
/**
* Forces ahead-of-time initialization.
*
* @since 0.8 or earlier
*/
public static final boolean AOT;
private static NodeCost parseNodeInfoKind(String kind) {
if (kind == null) {
return null;
}
return NodeCost.valueOf(kind);
}
static {
/*
* Ensure TruffleRuntime gets initialized before TruffleOptions are set. This allows a
* specific TruffleRuntime to effect the system properties that are used to determine the
* values for the TruffleOptions below.
*/
Truffle.getRuntime();
class GetOptions implements PrivilegedAction {
boolean aot;
boolean traceRewrites;
boolean detailedRewriteReasons;
String traceRewritesFilterClass;
NodeCost traceRewritesFilterFromCost;
NodeCost traceRewritesFilterToCost;
@Override
public Void run() {
aot = Boolean.getBoolean("com.oracle.graalvm.isaot");
traceRewrites = Boolean.getBoolean("truffle.TraceRewrites");
detailedRewriteReasons = Boolean.getBoolean("truffle.DetailedRewriteReasons");
traceRewritesFilterClass = System.getProperty("truffle.TraceRewritesFilterClass");
traceRewritesFilterFromCost = parseNodeInfoKind(System.getProperty("truffle.TraceRewritesFilterFromCost"));
traceRewritesFilterToCost = parseNodeInfoKind(System.getProperty("truffle.TraceRewritesFilterToCost"));
return null;
}
}
GetOptions options = new GetOptions();
AccessController.doPrivileged(options);
TraceRewrites = options.traceRewrites;
DetailedRewriteReasons = options.detailedRewriteReasons;
AOT = options.aot;
TraceRewritesFilterClass = options.traceRewritesFilterClass;
TraceRewritesFilterFromCost = options.traceRewritesFilterFromCost;
TraceRewritesFilterToCost = options.traceRewritesFilterToCost;
}
}