Examples with ObjectReference org.vmmagic.unboxed.ObjectReference used on opensource projects

Example 31 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class Traversal method doClosure.

/**
 * Iterate over the heap depth-first, scanning objects until
 * the mark stack is empty.
 */
private void doClosure() {
    while (markStack.size() > 0) {
        ObjectReference object = markStack.remove(markStack.size() - 1);
        scan(object);
    }
    blackSet.clear();
    markStack.clear();
}

Example 32 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class ScanThread method printMethodHeader.

/**
 * Print out the method header for the method associated with the
 * current frame
 */
private void printMethodHeader() {
    RVMMethod method = compiledMethod.getMethod();
    Log.write("\n--- METHOD (");
    Log.write(CompiledMethod.compilerTypeToString(compiledMethodType));
    Log.write(") ");
    if (method == null)
        Log.write("null method");
    else
        printMethod(method);
    Log.writeln();
    Log.write("--- fp = ");
    Log.write(fp);
    if (compiledMethod.isCompiled()) {
        ObjectReference codeBase = ObjectReference.fromObject(compiledMethod.getEntryCodeArray());
        Log.write("     code base = ");
        Log.write(codeBase);
        Log.write("     code offset = ");
        Log.writeln(ip.diff(codeBase.toAddress()));
        Log.write("     line number = ");
        Log.writeln(compiledMethod.findLineNumberForInstruction(ip.diff(codeBase.toAddress())));
    } else {
        Log.write("   Method is uncompiled - ip = ");
        Log.writeln(ip);
    }
}

Example 33 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class ScanThread method dumpStackFrame.

/**
 * Dump the contents of a stack frame. Attempts to interpret each
 * word as an object reference
 *
 * @param verbosity The level of verbosity to be used when
 * performing the scan.
 */
private void dumpStackFrame(int verbosity) {
    Address start, end;
    if (VM.BuildForIA32) {
        if (prevFp.isZero()) {
            start = fp.minus(20 * BYTES_IN_ADDRESS);
            Log.writeln("--- 20 words of stack frame with fp = ", fp);
        } else {
            // start at callee fp
            start = prevFp;
        }
        // end at fp
        end = fp;
    } else {
        // start at fp
        start = fp;
        // stop at callers fp
        end = fp.loadAddress();
    }
    for (Address loc = start; loc.LT(end); loc = loc.plus(BYTES_IN_ADDRESS)) {
        Log.write(loc);
        Log.write(" (");
        Log.write(loc.diff(start));
        Log.write("):   ");
        ObjectReference value = Selected.Plan.get().loadObjectReference(loc);
        Log.write(value);
        Log.write(" ");
        Log.flush();
        if (verbosity >= 4 && MemoryManager.objectInVM(value) && loc.NE(start) && loc.NE(end))
            MemoryManager.dumpRef(value);
        else
            Log.writeln();
    }
    Log.writeln();
}

Example 34 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class ScanThread method processFrameForCode.

/**
 * Identify all pointers into code pointers associated with a frame.
 * There are two cases to be considered: a) the instruction pointer
 * associated with each frame (stored in the thread's metadata for
 * the top frame and as a return address for all subsequent frames),
 * and b) local variables on the stack which happen to be pointers
 * to code.<p>
 *
 * FIXME: SB: Why is it that JNI frames are skipped when considering
 * top of stack frames, while boot image frames are skipped when
 * considering other frames.  Shouldn't they both be considered in
 * both cases?
 *
 * @param verbosity The level of verbosity to be used when
 * performing the scan.
 */
private void processFrameForCode(int verbosity) {
    /* get the code object associated with this frame */
    ObjectReference code = ObjectReference.fromObject(compiledMethod.getEntryCodeArray());
    pushFrameIP(code, verbosity);
    scanFrameForCode(code);
}

Example 35 with ObjectReference

use of org.vmmagic.unboxed.ObjectReference in project JikesRVM by JikesRVM.

the class ScanThread method dumpRef.

/**
 * Print out information associated with a reference.
 *
 * @param refaddr The address of the reference in question.
 * @param verbosity The level of verbosity to be used when
 * performing the scan.
 */
private void dumpRef(Address refaddr, int verbosity) {
    ObjectReference ref = refaddr.loadObjectReference();
    VM.sysWrite(refaddr);
    if (verbosity >= 5) {
        VM.sysWrite(":");
        MemoryManager.dumpRef(ref);
    } else
        VM.sysWriteln();
}