Examples with DataUnavailable com.ibm.dtfj.image.DataUnavailable used on opensource projects

Example 41 with DataUnavailable

use of com.ibm.dtfj.image.DataUnavailable in project openj9 by eclipse.

the class ImageProcess method getCommandLine.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.image.ImageProcess#getCommandLine()
	 */
public String getCommandLine() throws DataUnavailable, CorruptDataException {
    // We can't get the command line from the core dump on zOS, or on recent Windows versions. On Linux
    // it may be truncated. The java launcher stores the command line in an environment variable, so for
    // all platforms we now try that first, with the core reader as a fallback.
    Properties environment = getEnvironment();
    String javaCommandLine = environment.getProperty(JAVA_COMMAND_LINE_ENVIRONMENT_VARIABLE);
    if (javaCommandLine != null) {
        return javaCommandLine;
    }
    if (_commandLine == null) {
        throw new DataUnavailable("Command line unavailable from core dump");
    }
    return _commandLine;
}

Example 42 with DataUnavailable

use of com.ibm.dtfj.image.DataUnavailable in project openj9 by eclipse.

the class JavaObject method getPersistentHashcode.

/* (non-Javadoc)
	 * @see com.ibm.dtfj.java.JavaObject#getPersistentHashcode()
	 */
public long getPersistentHashcode() throws DataUnavailable, CorruptDataException {
    // this is a terrible way to do this since we know that it _will_ _break_ in the future.  It is, however, the best that we can do
    if (_javaVM.objectShouldInferHash()) {
        try {
            int flags = ((com.ibm.dtfj.java.j9.JavaAbstractClass) getJavaClass()).readFlagsFromInstance(this);
            // now mask out the non-hash bits, shift and return
            // high 15 bits, omitting most significant
            int twoBytes = flags & 0x7FFF0000;
            long hash = (twoBytes >> 16) | twoBytes;
            return hash;
        } catch (MemoryAccessException e) {
            // if we can't access the memory, the core must be corrupt
            throw new CorruptDataException(new CorruptData("Address in object header but unreadable", _basePointer));
        }
    } else {
        throw new DataUnavailable("Unknown hash strategy for this VM version");
    }
}

Example 43 with DataUnavailable

use of com.ibm.dtfj.image.DataUnavailable in project openj9 by eclipse.

the class PHDImage method getCreationTime.

/**
 * Use the filename if of the form heapdump.yyyyMMdd.HHmmss.pid.seq.phd
 * else the file date
 */
public long getCreationTime() throws DataUnavailable {
    if (file == null) {
        throw new DataUnavailable("File creation time not available.");
    }
    String name = file.getName();
    String prefix = "heapdump";
    // Allow extra stuff in front of "heapdump"
    int p = Math.max(0, name.indexOf(prefix));
    name = name.substring(p);
    if (name.startsWith(prefix)) {
        String dateTime = "yyyyMMdd.HHmmss";
        SimpleDateFormat sdf = new SimpleDateFormat(dateTime);
        ParsePosition pp = new ParsePosition(0);
        for (int i = prefix.length(); i < name.length(); ++i) {
            pp.setIndex(i);
            Date d = sdf.parse(name, pp);
            if (d != null && !d.before(PHDImageFactory.earliestDump) && d.before(PHDImageFactory.latestDump)) {
                return d.getTime();
            }
        }
    }
    // or for AIX 1.4.2 heapdumpPID.EPOCHTIME.phd
    // heapdump454808.1244656860.phd
    String[] s = name.split("\\.");
    prefix = "heapdump";
    if ((s.length == 3 || s.length == 4 && s[3].equals("gz")) && s[0].startsWith(prefix)) {
        try {
            // Check the first part is also a number (PID)
            Integer.parseInt(s[0].substring(prefix.length()));
            // Check the second part is also a number
            long l2 = Long.parseLong(s[1]);
            // The second number is the number of seconds since the epoch
            // Simple validation - since circa 2000 ?
            Date dF = new Date(l2 * 1000L);
            if (!dF.before(PHDImageFactory.earliestDump) && dF.before(PHDImageFactory.latestDump)) {
                return dF.getTime();
            }
        } catch (NumberFormatException e) {
        }
    }
    try {
        if (meta != null)
            return meta.getCreationTime();
    } catch (DataUnavailable e) {
    }
    return file.lastModified();
}

Example 44 with DataUnavailable

use of com.ibm.dtfj.image.DataUnavailable in project openj9 by eclipse.

the class PHDJavaClass method referencesClass.

/**
 * Is there a reference from one class to another?
 * E.g. from an array class to the component type? This would be an indication that they
 * are truly related.
 * @param from
 * @param to
 * @return
 */
static boolean referencesClass(JavaClass from, JavaClass to) {
    for (Iterator i1 = from.getReferences(); i1.hasNext(); ) {
        Object o = i1.next();
        if (o instanceof CorruptData)
            continue;
        JavaReference jr = (JavaReference) o;
        try {
            if (jr.isClassReference() && jr.getTarget().equals(to)) {
                return true;
            }
            if (jr.isObjectReference() && jr.getTarget().equals(to.getObject())) {
                return true;
            }
        } catch (DataUnavailable e) {
        } catch (CorruptDataException e) {
        }
    }
    return false;
}

Example 45 with DataUnavailable

use of com.ibm.dtfj.image.DataUnavailable in project openj9 by eclipse.

the class PHDJavaLocation method toString.

/*
	 * Get a description of the frame in the same format as a stack trace 
	 */
public String toString() {
    StringBuilder sb = new StringBuilder();
    try {
        JavaMethod m = getMethod();
        sb.append(m.getDeclaringClass().getName().replace('/', '.'));
        sb.append('.');
        sb.append(m.getName());
    } catch (CorruptDataException e) {
        sb.append("corrupt");
    } catch (DataUnavailable e) {
        sb.append("data unavailable");
    }
    sb.append('(');
    boolean d = false;
    try {
        sb.append(getFilename());
        d = true;
        int line = getLineNumber();
        sb.append(':');
        sb.append(line);
    } catch (CorruptDataException e) {
        try {
            if (getCompilationLevel() > 0) {
                if (d)
                    sb.append('(');
                sb.append("Compiled Code");
                if (d)
                    sb.append(')');
            }
        } catch (CorruptDataException e2) {
        }
    } catch (DataUnavailable e) {
        try {
            if (getCompilationLevel() > 0) {
                if (d)
                    sb.append('(');
                sb.append("Compiled Code");
                if (d)
                    sb.append(')');
            }
        } catch (CorruptDataException e2) {
        }
    } finally {
        sb.append(')');
    }
    return sb.toString();
}