scheduler.h

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#pragma once
 
#include <stdint.h>
 
namespace ersa::runtime {
 
struct SleepEligibility {
    bool wakeSourcesReady{false};
    bool consoleAttached{false};
    bool userIdle{false};
    bool foregroundWorkActive{false};
    bool networkWorkActive{false};
    bool displayBusy{false};
    bool featureLeaseHeld{false};
    bool pendingWork{false};
 
    bool maySleep() const {
        return wakeSourcesReady && !consoleAttached && userIdle &&
               !foregroundWorkActive && !networkWorkActive && !displayBusy &&
               !featureLeaseHeld && !pendingWork;
    }
};
 
class WakeDeadlineSet {
public:
    explicit WakeDeadlineSet(uint32_t maximumWaitMs) : delayMs_(maximumWaitMs) {}
 
    void includeDelay(uint32_t delayMs) {
        if (delayMs < delayMs_) delayMs_ = delayMs;
    }
 
    uint32_t delayMs() const { return delayMs_; }
 
private:
    uint32_t delayMs_;
};
 
struct LoopSchedule {
    bool allowAutomaticSleep{false};
    uint32_t waitMs{25};
};
 
class RuntimeScheduler {
public:
    static LoopSchedule plan(const SleepEligibility& eligibility,
                             bool appDirty, bool inputPending,
                             uint32_t earliestDeadlineMs) {
        if (eligibility.maySleep()) {
            return {true, earliestDeadlineMs};
        }
        return {false, (appDirty || inputPending) ? 1U : 25U};
    }
};
 
} // namespace ersa::runtime