dbx_lmdb: speed optimization

git-svn-id: http://svn.miranda-ng.org/main/trunk@16311 1316c22d-e87f-b044-9b9b-93d7a3e3ba9c

3 files changed, 27 insertions, 8 deletions

diff --git a/plugins/Dbx_mdb/src/dbcontacts.cpp b/plugins/Dbx_mdb/src/dbcontacts.cpp
index c9e549da8e..deccf4f4fd 100644
--- a/plugins/Dbx_mdb/src/dbcontacts.cpp
+++ b/plugins/Dbx_mdb/src/dbcontacts.cpp
@@ -108,7 +108,7 @@ STDMETHODIMP_(LONG) CDbxMdb::DeleteContact(MCONTACT contactID)
 	DBEventSortingKey keyVal = { 0, 0, contactID };

 	key = { sizeof(keyVal), &keyVal }; MDB_val data;

 

-	txn_ptr trnlck(m_pMdbEnv, true);

+	txn_ptr_ro trnlck(m_pMdbEnv);

 	cursor_ptr cursor(trnlck, m_dbEventsSort);

 	mdb_cursor_get(cursor, &key, &data, MDB_SET);

 	while (mdb_cursor_get(cursor, &key, &data, MDB_NEXT) == MDB_SUCCESS) 

diff --git a/plugins/Dbx_mdb/src/dbevents.cpp b/plugins/Dbx_mdb/src/dbevents.cpp
index 39ec4d4afb..af81195ff7 100644
--- a/plugins/Dbx_mdb/src/dbevents.cpp
+++ b/plugins/Dbx_mdb/src/dbevents.cpp
@@ -24,6 +24,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "stdafx.h"

 

 MDB_txn* txn_ptr_ro::m_txn;

+MDB_cursor* cursor_ptr_ro::m_cursor;

 

 STDMETHODIMP_(LONG) CDbxMdb::GetEventCount(MCONTACT contactID)

 {

@@ -246,7 +247,7 @@ STDMETHODIMP_(BOOL) CDbxMdb::GetEvent(MEVENT hDbEvent, DBEVENTINFO *dbei)
 

 void CDbxMdb::FindNextUnread(const txn_ptr &txn, DBCachedContact *cc, DBEventSortingKey &key2)

 {

-	cursor_ptr cursor(txn, m_dbEventsSort);

+	cursor_ptr_ro cursor(txn, m_dbEventsSort);

 

 	MDB_val key = { sizeof(key2), &key2 }, data;

 	key2.dwEventId++;

@@ -325,7 +326,7 @@ STDMETHODIMP_(MEVENT) CDbxMdb::FindFirstEvent(MCONTACT contactID)
 	mir_cslock lck(m_csDbAccess);

 	txn_ptr_ro txn(m_pMdbEnv);

 

-	cursor_ptr cursor(txn, m_dbEventsSort);

+	cursor_ptr_ro cursor(txn, m_dbEventsSort);

 	mdb_cursor_get(cursor, &key, &data, MDB_SET);

 	if (mdb_cursor_get(cursor, &key, &data, MDB_NEXT) != MDB_SUCCESS)

 		return m_evLast = 0;

@@ -349,7 +350,7 @@ STDMETHODIMP_(MEVENT) CDbxMdb::FindLastEvent(MCONTACT contactID)
 	mir_cslock lck(m_csDbAccess);

 	txn_ptr_ro txn(m_pMdbEnv);

 

-	cursor_ptr cursor(txn, m_dbEventsSort);

+	cursor_ptr_ro cursor(txn, m_dbEventsSort);

 	mdb_cursor_get(cursor, &key, &data, MDB_SET);

 	if (mdb_cursor_get(cursor, &key, &data, MDB_PREV) != MDB_SUCCESS)

 		return m_evLast = 0;

@@ -380,7 +381,7 @@ STDMETHODIMP_(MEVENT) CDbxMdb::FindNextEvent(MCONTACT contactID, MEVENT hDbEvent
 	DBEventSortingKey keyVal = { hDbEvent, ts, contactID };

 	MDB_val key = { sizeof(keyVal), &keyVal };

 

-	cursor_ptr cursor(txn, m_dbEventsSort);

+	cursor_ptr_ro cursor(txn, m_dbEventsSort);

 	if (mdb_cursor_get(cursor, &key, &data, MDB_SET) != MDB_SUCCESS)

 		return m_evLast = 0;

 

@@ -413,7 +414,7 @@ STDMETHODIMP_(MEVENT) CDbxMdb::FindPrevEvent(MCONTACT contactID, MEVENT hDbEvent
 	DBEventSortingKey keyVal = { hDbEvent, ts, contactID };

 	MDB_val key = { sizeof(keyVal), &keyVal };

 

-	cursor_ptr cursor(txn, m_dbEventsSort);

+	cursor_ptr_ro cursor(txn, m_dbEventsSort);

 	if (mdb_cursor_get(cursor, &key, &data, MDB_SET) != MDB_SUCCESS)

 		return m_evLast = 0;

 

diff --git a/plugins/Dbx_mdb/src/stdafx.h b/plugins/Dbx_mdb/src/stdafx.h
index 0a777f5e5b..3f193dda47 100644
--- a/plugins/Dbx_mdb/src/stdafx.h
+++ b/plugins/Dbx_mdb/src/stdafx.h
@@ -50,9 +50,9 @@ class txn_ptr
 	MDB_txn *m_txn;

 

 public:

-	__forceinline txn_ptr(MDB_env *pEnv, bool bReadOnly = false)

+	__forceinline txn_ptr(MDB_env *pEnv)

 	{

-		mdb_txn_begin(pEnv, NULL, (bReadOnly) ? MDB_RDONLY : 0, &m_txn);

+		mdb_txn_begin(pEnv, NULL,  0, &m_txn);

 	}

 

 	__forceinline ~txn_ptr()

@@ -118,6 +118,24 @@ public:
 	__forceinline operator MDB_cursor*() const { return m_cursor; }

 };

 

+class cursor_ptr_ro

+{

+	static MDB_cursor *m_cursor;

+

+public:

+	__forceinline cursor_ptr_ro(MDB_txn *_txn, MDB_dbi _dbi)

+	{

+		if (!m_cursor)

+			mdb_cursor_open(_txn, _dbi, &m_cursor);

+	}

+

+	__forceinline ~cursor_ptr_ro()

+	{

+	}

+

+	__forceinline operator MDB_cursor*() const { return m_cursor; }

+};

+

 #define MDB_CHECK(A,B) \

 	switch(A) { \

 	case MDB_SUCCESS: break; \