- This was an *evil* "chicken-or-egg-first" bug in CPUPoliciesGatekeeper. Now
CPUPolicy->activate() should run properly. git-svn-id: svn://svn.gna.org/svn/sgpemv2/trunk@846 3ecf2c5c-341e-0410-92b4-d18e462d057c
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@ -29,7 +29,7 @@ class rr_priority(CPUPolicy) :
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def configure(self):
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param = self.get_parameters()
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param.register_int("Time slice", 1, 10000, True, 2)
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param.register_int("Is preemptive?", 0, 1, True, 0)
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param.register_int("Is preemptive?", 0, 1, True, 1)
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def is_preemptive(self):
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value = self.get_parameters().get_int("Is preemptive?")
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@ -109,15 +109,23 @@ CPUPoliciesGatekeeper::activate_policy(History *history, CPUPolicy* policy)
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{
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try
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{
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policy->activate();
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// policy->activate() needs already an active policy, because:
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// * it calls the configure() method on the
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// insert-your-favourite-scripting-language-here-policy
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// * which in turn calls the configure() method in the
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// code written by the user
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// * which probably uses Simulation to get the _active_ C++ policy,
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// so it can get its policy_parameters()
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// ... so **DON'T** play Mr. Clever Dick and swap the following two
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// lines in an optimization frenzy! Or the user policy WILL fail.
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_active_policies[history] = policy;
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policy->activate();
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}
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catch(const CPUPolicyException& e)
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{
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//FIXME what to do here???
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//probably throwing again a MalformedPolicyException
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//maybe the best idea. or can we just fallback
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//to the previous policy?
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// See the comment above to understand why we do this
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// in this way
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_active_policies.erase(_active_policies.find(history));
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}
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}
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}
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@ -22,7 +22,7 @@
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#include "concrete_history.hh"
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#include "cpu_policy.hh"
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#include "scheduler.hh"
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#include "user_interrupt_exception.hh"
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#include "cpu_policy_exception.hh"
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// Do not include full template definition in the header file
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#include "singleton.tcc"
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@ -71,14 +71,6 @@ Scheduler::get_policy()
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//.............................................................................
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static bool
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validate_environment(ConcreteEnvironment& e)
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{
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return true;
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}
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// Introduces newly arrived processes.
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// Postcondition:
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// for each process p in next_snapshot
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@ -542,21 +534,6 @@ check_if_simulation_is_terminated(unsigned int front, auto_ptr<ConcreteEnvironme
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}
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static void
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print_queue(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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{
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ReadyQueue& queue = next_snapshot->get_sorted_queue();
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for(unsigned int i = 0; i < queue.size(); i++)
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{
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std::cout << queue.get_item_at(i).get_name();
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}
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}
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static bool
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try_to_run(unsigned int front, auto_ptr<ConcreteEnvironment>& next_snapshot)
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{
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@ -731,7 +708,7 @@ Scheduler::step_forward(ConcreteHistory& concrete_history, CPUPolicy& cpu_policy
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return !terminated; // watch out for the !
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}
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catch(UserInterruptException& e)
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catch(CPUPolicyException& e)
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{
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// Reset values that the policy doesn't need anymore
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_policy = NULL;
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