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Make SeqNum hash friendly

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This commit is contained in:
Atlante45 2015-07-24 12:21:20 -07:00
parent beba45c8c5
commit d4504ae6c8
1 changed files with 25 additions and 6 deletions
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31
libraries/networking/src/udt/SeqNum.h
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@ -12,6 +12,8 @@
#ifndef hifi_SeqNum_h
#define hifi_SeqNum_h
#include <functional>
#include <glm/detail/func_common.hpp>
namespace udt {
@ -26,9 +28,11 @@ public:
static const Type MAX = 0x1FFFFFFF; // maximum sequence number used in UDT
SeqNum() : _value(0) {}
SeqNum(const SeqNum& other) : _value(other._value) {}
// Only explicit conversions
explicit SeqNum(Type value) { *this = value; }
explicit SeqNum(char* value) { _value = (*reinterpret_cast<int32_t*>(value)) & MAX; }
explicit SeqNum(Type value) { _value = (value <= MAX) ? value : MAX; }
explicit operator Type() { return _value; }
inline SeqNum& operator++() {
@ -50,11 +54,7 @@ public:
return before;
}
inline SeqNum& operator=(Type value) {
_value = (value <= MAX) ? value : MAX;
return *this;
}
inline SeqNum& operator=(SeqNum& other) {
inline SeqNum& operator=(const SeqNum& other) {
_value = other._value;
return *this;
}
@ -67,18 +67,37 @@ public:
return *this;
}
inline bool operator==(const SeqNum& other) const {
return _value == other._value;
}
inline bool operator!=(const SeqNum& other) const {
return _value != other._value;
}
friend int seqcmp(const SeqNum& seq1, const SeqNum& seq2);
friend int seqlen(const SeqNum& seq1, const SeqNum& seq2);
friend int seqoff(const SeqNum& seq1, const SeqNum& seq2);
private:
Type _value;
friend struct std::hash<SeqNum>;
};
int seqcmp(const SeqNum& seq1, const SeqNum& seq2);
int seqlen(const SeqNum& seq1, const SeqNum& seq2);
int seqoff(const SeqNum& seq1, const SeqNum& seq2);
}
namespace std {
template<> struct hash<udt::SeqNum> {
size_t operator()(const udt::SeqNum& seqNum) const {
return std::hash<unsigned long>()(seqNum._value);
}
};
}
#endif // hifi_SeqNum_h