/** Method to process the build queue, can be called by more than one thread */
public void processBuildQueue() throws TablesawException {
BuildAction ba;
Rule rule;
String target;
synchronized (m_threadList) {
m_threadList.add(Thread.currentThread());
}
try {
doloop:
do {
synchronized (this) {
try {
ba = (BuildAction) m_buildQueue.removeLast();
} catch (NoSuchElementException nsee) {
break doloop;
// ba = new BuildAction(m_fileManager, null);
}
if (m_printDebug) Debug.print("Processing: " + ba);
if (m_makeException != null) break doloop;
ba.waitForDependencies();
if (m_makeException != null) break doloop;
}
rule = ba.getTargetRule();
MakeAction action = rule.getMakeAction();
// target = ba.getTarget();
if (action != null) {
action.doMakeAction(rule);
rule.verify();
}
Debug.print("COMPLETE - " + ba);
ba.complete(); // Complete the BuildAction
} while (m_makeException == null);
} catch (Exception e) {
TablesawException cpe;
if (e instanceof TablesawException) cpe = (TablesawException) e;
else cpe = new TablesawException(e);
synchronized (this) {
m_makeException = cpe;
for (Thread t : m_threadList) t.interrupt();
}
throw cpe;
}
// This causes worker threads to die off and the exception to
// pass to the main thread
if (m_makeException != null) throw m_makeException;
}
// ---------------------------------------------------------------------------
private BuildAction addToBuildQueue(String target, boolean primaryTarget, int insertPosition)
throws TablesawException {
// The target was already checked and does not need to be built
if (m_noBuildCache.contains(target)) return (null);
Debug.print("addToBuildQueue(" + target + ", " + primaryTarget + ", " + insertPosition + ")");
Debug.indent();
Rule trule = findTargetRule(target);
CachedFile targetFile = null;
BuildAction[] buildDep = null;
BuildAction targetBA = null;
BuildAction depBA = null;
BuildAction ret = null;
if (trule == null) {
targetFile = m_fileManager.locateFile(target);
// TODO: Add the rule that required this target to the error message
if (targetFile == null)
throw new TablesawException("Unable to locate rule for '" + target + "'");
if (m_sourceFiles != null)
m_sourceFiles.add(
new File(
targetFile.getPath())); // Doing this because locateFile will return a CachedFile
// TODO: check file against cache file stamps and if changed return dummy rule
Debug.print("Cache lookup for " + targetFile.getPath());
// Add file to cache for next run
m_newModificationCache.put(targetFile.getPath(), targetFile.lastModified());
Long cacheModTime = m_modificationCache.get(targetFile.getPath());
if (cacheModTime != null) {
Debug.print("Cache hit " + cacheModTime + ":" + targetFile.lastModified());
if (cacheModTime != targetFile.lastModified()) {
Debug.print("returning obj for " + targetFile);
Debug.popIndent();
targetBA =
new BuildAction(
m_fileManager, new ModifiedFileRule(targetFile.getPath()), m_classAnnotations);
m_buildQueue.add(insertPosition, targetBA);
return (targetBA);
}
} else Debug.print("Cache miss");
// System.out.println("File "+targetFile);
m_noBuildCache.add(target);
Debug.print("Target " + target + " is a file with no rule");
Debug.popIndent();
return (null);
}
if ((m_sourceFiles != null) && (trule instanceof SourceFileSet)) {
m_sourceFiles.addAll(((SourceFileSet) trule).getSourceFiles());
}
long targetTime = 0;
boolean tExists = true;
boolean tDir = false;
boolean tPhony = true;
boolean rebuild = false;
targetBA = new BuildAction(m_fileManager, trule, m_classAnnotations);
int index;
if (m_buildQueueCache.containsKey(targetBA)) {
// Get the build action from the queue
targetBA = m_buildQueueCache.get(targetBA);
Debug.print("target: " + trule + " already in build queue.");
// Target has already been added to build queue
Debug.popIndent();
return (targetBA);
}
File f;
trule.preBuild(m_depCache, m_modificationCache);
// NOTE: need to add in dependencies that are individually declared
// NOTE: getPrerequisites is also where dependency parsing happens to include C headers and
// other java classes
// String[] prereqs = getPrerequisites(trule, true);
List<String> prereqs = new ArrayList<String>();
for (String dn : trule.getDependNames()) {
Debug.print("adding depend name " + dn);
prereqs.add(dn);
}
for (Rule r : trule.getDependRules()) {
Debug.print("adding depend rule " + r);
if (r.getName() == null) {
// Generate name for rule
String genRuleName = NAMED_RULE_PREFIX + (m_ruleNameCounter++);
r.setName(genRuleName);
m_nameRuleMap.put(genRuleName, r);
}
prereqs.add(r.getName());
}
Debug.print("rule dependents " + prereqs.size());
if (prereqs.size() > 0) {
ListIterator<String> it = prereqs.listIterator();
while (it.hasNext()) {
String prereq = it.next();
if (prereq.equals(target))
throw new TablesawException("Target " + target + " depends on itself");
/* //See if the prereq is the name of a rule first
Rule nameRule = m_nameRuleMap.get(prereq);
//Add the new rule targets to the prereqs list
// TODO: some kind of check so we dont add the same named rule again and again.
if (nameRule != null)
{
Iterable<String> ruleTargets = nameRule.getTargets();
boolean hasTargets = false;
for (String t : ruleTargets)
{
hasTargets = true;
it.add(t);
it.previous();
}
if (hasTargets)
continue;
} */
// Add dependencies to build queue first.
// f = m_fileManager.getFile(prereq);
if ((depBA = addToBuildQueue(prereq, false, insertPosition)) != null) {
targetBA.addDependency(depBA);
// trule.addNewerDepend(prereq);
if (depBA.isBinding()) {
Debug.print("Rebuild: " + trule + " because rebuild of " + depBA.getTargetRule());
rebuild = true;
}
}
}
}
if (!rebuild) {
rebuild = trule.needToRun();
Debug.print("Rule needToRun() returned " + rebuild);
}
// TODO: change this to get depends from above and check if no depends
if ((!rebuild)
&& (primaryTarget
&& (!trule
.getTargets()
.iterator()
.hasNext()))) { // If target is the primary target and it has no targets
Debug.print("Adding primary target: " + trule + " to build queue.");
rebuild = true;
}
if (rebuild) { // Add target to build queue
m_buildQueue.add(insertPosition, targetBA);
m_buildQueueCache.put(targetBA, targetBA);
Debug.print("Adding " + targetBA + " to build queue at pos " + insertPosition);
// System.out.println("Adding "+targetBA+" to build queue at pos "+insertPosition);
ret = targetBA;
}
// Add target to cache if it does not need to be built
// This is to speed up incremental builds
if (ret == null) m_noBuildCache.add(target);
Debug.popIndent();
return (ret);
}