File size: 1,594 Bytes
d1be154 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 | #ifndef OT_TIMER_PFXT_HPP_
#define OT_TIMER_PFXT_HPP_
#include <ot/headerdef.hpp>
namespace ot {
// Forward declaration
class SfxtCache;
class Arc;
// ------------------------------------------------------------------------------------------------
// Class: PfxtNode
struct PfxtNode {
float slack;
size_t from;
size_t to;
const Arc* arc {nullptr};
const PfxtNode* parent {nullptr};
PfxtNode(float, size_t, size_t, const Arc*, const PfxtNode*);
};
// ------------------------------------------------------------------------------------------------
// Class: PfxtCache
class PfxtCache {
friend class Timer;
// Min-heap comparator
struct PfxtNodeComparator {
bool operator () (std::unique_ptr<PfxtNode>& a, std::unique_ptr<PfxtNode>& b) const {
return a->slack > b->slack;
}
};
public:
inline size_t num_nodes() const;
PfxtCache(const SfxtCache&);
PfxtCache(const PfxtCache&) = delete;
PfxtCache(PfxtCache&&);
PfxtCache& operator = (const PfxtCache&) = delete;
PfxtCache& operator = (PfxtCache&&) = delete;
private:
const SfxtCache& _sfxt;
PfxtNodeComparator _comp;
std::vector<std::unique_ptr<PfxtNode>> _paths;
std::vector<std::unique_ptr<PfxtNode>> _nodes;
void _push(float, size_t, size_t, const Arc*, const PfxtNode*);
PfxtNode* _pop();
PfxtNode* _top() const;
};
// Function: num_nodes
inline size_t PfxtCache::num_nodes() const {
return _nodes.size();
}
}; // end of namespace ot. ----------------------------------------------------------------------
#endif
|