#ifndef KQUEUE_H
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#define KQUEUE_H
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#include <unordered_map>
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#include <sys/event.h>
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#include "../shared/BruteForceBackend.hh"
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#include "../DirTree.hh"
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#include "../Signal.hh"
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struct KqueueSubscription {
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WatcherRef watcher;
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std::string path;
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std::shared_ptr<DirTree> tree;
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int fd;
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};
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class KqueueBackend : public BruteForceBackend {
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public:
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void start() override;
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~KqueueBackend();
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void subscribe(WatcherRef watcher) override;
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void unsubscribe(WatcherRef watcher) override;
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private:
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int mKqueue;
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int mPipe[2];
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std::unordered_multimap<std::string, KqueueSubscription> mSubscriptions;
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std::unordered_map<int, DirEntry *> mFdToEntry;
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Signal mEndedSignal;
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bool watchDir(WatcherRef watcher, std::string path, std::shared_ptr<DirTree> tree);
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bool compareDir(int fd, std::string &dir, std::unordered_set<WatcherRef> &watchers);
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std::vector<KqueueSubscription *> findSubscriptions(std::string &path);
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};
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#endif
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