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Diffstat (limited to 'src/dbwrapper.h')
-rw-r--r--src/dbwrapper.h15
1 files changed, 9 insertions, 6 deletions
diff --git a/src/dbwrapper.h b/src/dbwrapper.h
index 47bdb31b5b..4a79bbd17d 100644
--- a/src/dbwrapper.h
+++ b/src/dbwrapper.h
@@ -17,6 +17,9 @@
#include <leveldb/db.h>
#include <leveldb/write_batch.h>
+static const size_t DBWRAPPER_PREALLOC_KEY_SIZE = 64;
+static const size_t DBWRAPPER_PREALLOC_VALUE_SIZE = 1024;
+
class dbwrapper_error : public std::runtime_error
{
public:
@@ -60,12 +63,12 @@ public:
void Write(const K& key, const V& value)
{
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- ssKey.reserve(ssKey.GetSerializeSize(key));
+ ssKey.reserve(DBWRAPPER_PREALLOC_KEY_SIZE);
ssKey << key;
leveldb::Slice slKey(&ssKey[0], ssKey.size());
CDataStream ssValue(SER_DISK, CLIENT_VERSION);
- ssValue.reserve(ssValue.GetSerializeSize(value));
+ ssValue.reserve(DBWRAPPER_PREALLOC_VALUE_SIZE);
ssValue << value;
ssValue.Xor(dbwrapper_private::GetObfuscateKey(parent));
leveldb::Slice slValue(&ssValue[0], ssValue.size());
@@ -77,7 +80,7 @@ public:
void Erase(const K& key)
{
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- ssKey.reserve(ssKey.GetSerializeSize(key));
+ ssKey.reserve(DBWRAPPER_PREALLOC_KEY_SIZE);
ssKey << key;
leveldb::Slice slKey(&ssKey[0], ssKey.size());
@@ -107,7 +110,7 @@ public:
template<typename K> void Seek(const K& key) {
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- ssKey.reserve(ssKey.GetSerializeSize(key));
+ ssKey.reserve(DBWRAPPER_PREALLOC_KEY_SIZE);
ssKey << key;
leveldb::Slice slKey(&ssKey[0], ssKey.size());
piter->Seek(slKey);
@@ -200,7 +203,7 @@ public:
bool Read(const K& key, V& value) const
{
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- ssKey.reserve(ssKey.GetSerializeSize(key));
+ ssKey.reserve(DBWRAPPER_PREALLOC_KEY_SIZE);
ssKey << key;
leveldb::Slice slKey(&ssKey[0], ssKey.size());
@@ -234,7 +237,7 @@ public:
bool Exists(const K& key) const
{
CDataStream ssKey(SER_DISK, CLIENT_VERSION);
- ssKey.reserve(ssKey.GetSerializeSize(key));
+ ssKey.reserve(DBWRAPPER_PREALLOC_KEY_SIZE);
ssKey << key;
leveldb::Slice slKey(&ssKey[0], ssKey.size());