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Provide a timeout for query that might run in UI thread.

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GdbReverseToggleCommand extends AbstractDebugCommand so as to be able to
block without risking a deadlock.  However, this only applies to
doExecute() and isExecutable().

GdbReverseToggleCommand has two other methods that use queries, and
those are at risk of a deadlock: isReverseToggled() and
getReverseDebugMethod().  Those queries must have a timeout to avoid any
risk of deadlock.

Change-Id: Ia410b8f102638965ccbf8ac9deda06dc4efc5f0d
This commit is contained in:
Marc Khouzam 2016-03-29 10:45:43 -04:00 • committed by Gerrit Code Review @ Eclipse.org
parent b08253b70a
commit 9655088708
1 changed files with 7 additions and 2 deletions
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9
dsf-gdb/org.eclipse.cdt.dsf.gdb.ui/src/org/eclipse/cdt/dsf/gdb/internal/ui/commands/GdbReverseToggleCommand.java
View file

@ -279,12 +279,15 @@ public class GdbReverseToggleCommand extends AbstractDebugCommand implements ICh
};
try {
fExecutor.execute(isToggledQuery);
return isToggledQuery.get();
return isToggledQuery.get(500, TimeUnit.MILLISECONDS);
} catch (InterruptedException e) {
} catch (ExecutionException e) {
} catch (RejectedExecutionException e) {
// Can be thrown if the session is shutdown
}
} catch (TimeoutException e) {
// If we timeout, we default to false.
// This is to avoid a deadlock
}
return false;
}
@ -390,6 +393,8 @@ public class GdbReverseToggleCommand extends AbstractDebugCommand implements ICh
} catch (ExecutionException e) {
} catch (RejectedExecutionException e) {
} catch (TimeoutException e) {
// If we timeout, we default to OFF.
// This is to avoid a deadlock
}
return ReverseDebugMethod.OFF;