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object.h: hobject_t definition

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Signed-off-by: Samuel Just <samuel.just@dreamhost.com>
This commit is contained in:
Samuel Just 2011-07-08 10:45:34 -07:00
parent de1f424a72
commit 45d829646d
1 changed files with 57 additions and 1 deletions
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58
src/include/object.h
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@ -249,7 +249,6 @@ inline bool operator<=(const sobject_t &l, const sobject_t &r) {
inline ostream& operator<<(ostream& out, const sobject_t &o) {
return out << o.oid << "/" << o.snap;
}
namespace __gnu_cxx {
template<> struct hash<sobject_t> {
size_t operator()(const sobject_t &r) const {
@ -260,6 +259,63 @@ namespace __gnu_cxx {
};
}
struct hobject_t {
object_t oid;
snapid_t snap;
uint32_t hash;
hobject_t() : snap(0), hash(0) {}
hobject_t(object_t oid, snapid_t snap, uint32_t hash) :
oid(oid), snap(snap), hash(hash) {}
hobject_t(const sobject_t &soid, uint32_t hash) :
oid(soid.oid), snap(soid.snap), hash(hash) {}
/* Do not use when a particular hash function is needed */
explicit hobject_t(const sobject_t &o) :
oid(o.oid), snap(o.snap) {
hash = __gnu_cxx::hash<sobject_t>()(o);
}
void swap(hobject_t &o) {
hobject_t temp(o);
o.oid = oid;
o.snap = snap;
o.hash = hash;
oid = temp.oid;
snap = temp.snap;
hash = temp.hash;
}
operator sobject_t() const {
return sobject_t(oid, snap);
}
void encode(bufferlist& bl) const {
__u8 version = 0;
::encode(version, bl);
::encode(oid, bl);
::encode(snap, bl);
::encode(hash, bl);
}
void decode(bufferlist::iterator& bl) {
__u8 version;
::decode(version, bl);
::decode(oid, bl);
::decode(snap, bl);
::decode(hash, bl);
}
};
WRITE_CLASS_ENCODER(hobject_t)
namespace __gnu_cxx {
template<> struct hash<hobject_t> {
size_t operator()(const sobject_t &r) const {
static hash<object_t> H;
static rjhash<uint64_t> I;
return H(r.oid) ^ I(r.snap);
}
};
}
// ---------------------------
#endif