/** Print out statistics at the end of a GC */
public final void printPostStats() {
if ((Options.verbose.getValue() == 1) || (Options.verbose.getValue() == 2)) {
Log.write("-> ");
Log.writeDec(Conversions.pagesToBytes(getPagesUsed()).toWord().rshl(10));
Log.write("KB ");
if (Options.verbose.getValue() == 1) {
totalTime.printLast();
Log.writeln(" ms]");
} else {
Log.write("End ");
totalTime.printTotal();
Log.writeln(" ms]");
}
}
if (Options.verbose.getValue() > 2) {
Log.write(" After Collection: ");
Space.printUsageMB();
if (Options.verbose.getValue() >= 4) {
Log.write(" ");
Space.printUsagePages();
}
if (Options.verbose.getValue() >= 5) {
Space.printVMMap();
}
Log.write(" ");
printUsedPages();
Log.write(" Collection time: ");
totalTime.printLast();
Log.writeln(" ms");
}
}
/** Print out statistics at the start of a GC */
public void printPreStats() {
if ((Options.verbose.getValue() == 1) || (Options.verbose.getValue() == 2)) {
Log.write("[GC ");
Log.write(Stats.gcCount());
if (Options.verbose.getValue() == 1) {
Log.write(" Start ");
Plan.totalTime.printTotalSecs();
Log.write(" s");
} else {
Log.write(" Start ");
Plan.totalTime.printTotalMillis();
Log.write(" ms");
}
Log.write(" ");
Log.write(Conversions.pagesToKBytes(getPagesUsed()));
Log.write("KB ");
Log.flush();
}
if (Options.verbose.getValue() > 2) {
Log.write("Collection ");
Log.write(Stats.gcCount());
Log.write(": ");
printUsedPages();
Log.write(" Before Collection: ");
Space.printUsageMB();
if (Options.verbose.getValue() >= 4) {
Log.write(" ");
Space.printUsagePages();
}
if (Options.verbose.getValue() >= 5) {
Space.printVMMap();
}
}
}
/**
* The postBoot method is called by the runtime immediately after command-line arguments are
* available. Note that allocation must be supported prior to this point because the runtime
* infrastructure may require allocation in order to parse the command line arguments. For this
* reason all plans should operate gracefully on the default minimum heap size until the point
* that boot is called.
*/
@Interruptible
public void postBoot() {
VM.statistics.perfEventInit(Options.perfEvents.getValue());
if (Options.verbose.getValue() > 2) Space.printVMMap();
if (Options.verbose.getValue() > 3) VM.config.printConfig();
if (Options.verbose.getValue() > 0) Stats.startAll();
if (Options.eagerMmapSpaces.getValue()) Space.eagerlyMmapMMTkSpaces();
}
@Uninterruptible
public static boolean validRef(ObjectReference ref) {
if (ref.isNull()) return true;
if (!Space.isMappedObject(ref)) {
VM.sysWrite("validRef: REF outside heap, ref = ");
VM.sysWrite(ref);
VM.sysWrite("\n");
Space.printVMMap();
return false;
}
if (MOVES_OBJECTS) {
/*
TODO: Work out how to check if forwarded
if (Plan.isForwardedOrBeingForwarded(ref)) {
// TODO: actually follow forwarding pointer
// (need to bound recursion when things are broken!!)
return true;
}
*/
}
TIB tib = ObjectModel.getTIB(ref);
Address tibAddr = Magic.objectAsAddress(tib);
if (!Space.isMappedObject(ObjectReference.fromObject(tib))) {
VM.sysWrite("validRef: TIB outside heap, ref = ");
VM.sysWrite(ref);
VM.sysWrite(" tib = ");
VM.sysWrite(tibAddr);
VM.sysWrite("\n");
ObjectModel.dumpHeader(ref);
return false;
}
if (tibAddr.isZero()) {
VM.sysWrite("validRef: TIB is Zero! ");
VM.sysWrite(ref);
VM.sysWrite("\n");
ObjectModel.dumpHeader(ref);
return false;
}
if (tib.length() == 0) {
VM.sysWrite("validRef: TIB length zero, ref = ");
VM.sysWrite(ref);
VM.sysWrite(" tib = ");
VM.sysWrite(tibAddr);
VM.sysWrite("\n");
ObjectModel.dumpHeader(ref);
return false;
}
ObjectReference type = ObjectReference.fromObject(tib.getType());
if (!validType(type)) {
VM.sysWrite("validRef: invalid TYPE, ref = ");
VM.sysWrite(ref);
VM.sysWrite(" tib = ");
VM.sysWrite(Magic.objectAsAddress(tib));
VM.sysWrite(" type = ");
VM.sysWrite(type);
VM.sysWrite("\n");
ObjectModel.dumpHeader(ref);
return false;
}
return true;
} // validRef