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Caching the status as well as the result, to allow to cache commands that fail.

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Bug 208920
This commit is contained in:
Marc Khouzam 2007-11-21 18:48:56 +00:00
parent 9df59c726e
commit 816a523659
1 changed files with 53 additions and 38 deletions
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87
plugins/org.eclipse.dd.dsf.debug/src/org/eclipse/dd/dsf/debug/service/command/CommandCache.java
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@ -96,6 +96,19 @@ public class CommandCache implements ICommandListener
}
}
class CommandResultInfo {
private final ICommandResult fData;
private final IStatus fStatus;
public CommandResultInfo(ICommandResult data, IStatus status) {
fData = data;
fStatus = status;
}
public ICommandResult getData() { return fData; }
public IStatus getStatus() { return fStatus; }
}
/*
* This class contains 5 significant lists.
*
@ -135,7 +148,7 @@ public class CommandCache implements ICommandListener
private ICommandControl fCommandControl;
private Map<IDMContext, HashMap<CommandInfo, ICommandResult>> fCachedContexts = new HashMap<IDMContext, HashMap<CommandInfo, ICommandResult>>();
private Map<IDMContext, HashMap<CommandInfo, CommandResultInfo>> fCachedContexts = new HashMap<IDMContext, HashMap<CommandInfo, CommandResultInfo>>();
private ArrayList<CommandInfo> fPendingQCommandsSent = new ArrayList<CommandInfo>();
@ -239,13 +252,14 @@ public class CommandCache implements ICommandListener
* If command is already cached, just return the cached data.
*/
if(fCachedContexts.get(context) != null && fCachedContexts.get(context).containsKey(cachedCmd)){
// Cast to the erased type of the returned command result.
// To ensure type safety, we are relying on the correct matching
// of command and result in the cached results map.
CommandResultInfo result = fCachedContexts.get(context).get(cachedCmd);
if (result.getStatus().isOK()) {
@SuppressWarnings("unchecked")
V v = (V) fCachedContexts.get(context).get(cachedCmd);
V v = (V)result.getData();
rm.setData(v);
} else {
rm.setStatus(result.getStatus());
}
rm.done();
return;
}
@ -316,14 +330,16 @@ public class CommandCache implements ICommandListener
return ;
}
ICommandResult result = getData();
IStatus status = getStatus();
if ( finalCachedCmd.getCommandstyle() == CommandStyle.COALESCED ) {
/*
* We matched a command which is itself already a COALESCED command. So
* we need to go throught the list of unsent commands which were not sent
* we need to go through the list of unsent commands which were not sent
* because the coalesced command represented it. For each match we find
* we create a new result from the coalesced command for it.
*/
ICommandResult result = getData();
for ( CommandInfo waitingEntry : new ArrayList<CommandInfo>(fPendingQWaitingForCoalescedCompletion) ) {
@ -336,40 +352,39 @@ public class CommandCache implements ICommandListener
// Cast the calculated result back to the requested type.
@SuppressWarnings("unchecked")
V newresult = (V)result.getSubsetResult(waitingEntry.getCommand());
V subResult = (V)result.getSubsetResult(waitingEntry.getCommand());
CommandResultInfo subResultInfo = new CommandResultInfo(subResult, status);
if(fCachedContexts.get(context) != null){
fCachedContexts.get(context).put(waitingEntry, newresult);
}
else{
HashMap<CommandInfo, ICommandResult> map = new HashMap<CommandInfo, ICommandResult>();
map.put(waitingEntry, newresult);
fCachedContexts.get(context).put(waitingEntry, subResultInfo);
} else {
HashMap<CommandInfo, CommandResultInfo> map = new HashMap<CommandInfo, CommandResultInfo>();
map.put(waitingEntry, subResultInfo);
fCachedContexts.put(context, map);
}
if (!getStatus().isOK()) {
if (!status.isOK()) {
/*
* We had some form of error with the original command. So notify the
* original requestors of the issues.
* original requesters of the issues.
*/
for (DataRequestMonitor<?> pendingRM : waitingEntry.getRequestMonitorList()) {
pendingRM.setStatus(getStatus());
pendingRM.setStatus(status);
pendingRM.done();
}
} else {
assert newresult != null;
assert subResult != null;
/*
* Notify the original requestors of the positive results.
* Notify the original requesters of the positive results.
*/
for (DataRequestMonitor<? extends ICommandResult> pendingRM : waitingEntry.getRequestMonitorList()) {
// Cast the pending return token to match the requested type.
@SuppressWarnings("unchecked")
DataRequestMonitor<V> vPendingRM = (DataRequestMonitor<V>) pendingRM;
vPendingRM.setData(newresult);
vPendingRM.setData(subResult);
vPendingRM.done();
}
}
@ -378,38 +393,38 @@ public class CommandCache implements ICommandListener
} else {
/*
* This is an original request which completed. Indicate success or
* failure to the original requestors.
* failure to the original requesters.
*/
CommandResultInfo resultInfo = new CommandResultInfo(result, status);
if (!getStatus().isOK()) {
if (fCachedContexts.get(context) != null){
fCachedContexts.get(context).put(finalCachedCmd, resultInfo);
} else {
HashMap<CommandInfo, CommandResultInfo> map = new HashMap<CommandInfo, CommandResultInfo>();
map.put(finalCachedCmd, resultInfo);
fCachedContexts.put(context, map);
}
if (!status.isOK()) {
/*
* We had some form of error with the original command. So notify the
* original requestors of the issues.
* original requesters of the issues.
*/
for (DataRequestMonitor<?> pendingRM : finalCachedCmd.getRequestMonitorList()) {
pendingRM.setStatus(getStatus());
pendingRM.setStatus(status);
pendingRM.done();
}
} else {
// Cast the calculated result back to the requested type.
@SuppressWarnings("unchecked")
V result = (V)getData();
if(fCachedContexts.get(context) != null){
fCachedContexts.get(context).put(finalCachedCmd, result);
}
else{
HashMap<CommandInfo, ICommandResult> map = new HashMap<CommandInfo, ICommandResult>();
map.put(finalCachedCmd, result);
fCachedContexts.put(context, map);
}
V vResult = (V)result;
for (DataRequestMonitor<? extends ICommandResult> pendingRM : finalCachedCmd.getRequestMonitorList()) {
// Cast the pending return token to match the requested type.
@SuppressWarnings("unchecked")
DataRequestMonitor<V> vPendingRM = (DataRequestMonitor<V>) pendingRM;
vPendingRM.setData(result);
vPendingRM.setData(vResult);
vPendingRM.done();
}
}