greenplumn init 源码
greenplumn init 代码
文件路径：/src/backend/gporca/libgpopt/src/init.cpp
//---------------------------------------------------------------------------
// Greenplum Database
// Copyright (C) 2011 Greenplum, Inc.
//
// @filename:
// init.cpp
//
// @doc:
// Implementation of initialization and termination functions for
// libgpopt.
//---------------------------------------------------------------------------
#include "gpopt/init.h"
#include "gpos/_api.h"
#include "gpos/memory/CAutoMemoryPool.h"
#include "gpos/task/CWorker.h"
#include "gpopt/exception.h"
#include "gpopt/mdcache/CMDCache.h"
#include "gpopt/xforms/CXformFactory.h"
#include "naucrates/init.h"
using namespace gpos;
using namespace gpopt;
static CMemoryPool *mp = nullptr;
//---------------------------------------------------------------------------
// @function:
// gpopt_init
//
// @doc:
// Initialize gpopt library. To enable memory allocations
// via a custom allocator, pass in non-NULL fnAlloc/fnFree
// allocation/deallocation functions. If either of the parameters
// are NULL, gpopt with be initialized with the default allocator.
//
//---------------------------------------------------------------------------
void
gpopt_init()
{
{
CAutoMemoryPool amp;
mp = amp.Pmp();
// add standard exception messages
(void) gpopt::EresExceptionInit(mp);
// detach safety
(void) amp.Detach();
}
if (GPOS_OK != gpopt::CXformFactory::Init())
{
return;
}
}
//---------------------------------------------------------------------------
// @function:
// gpopt_terminate
//
// @doc:
// Destroy the memory pool
//
//---------------------------------------------------------------------------
void
gpopt_terminate()
{
#ifdef GPOS_DEBUG
CMDCache::Shutdown();
CMemoryPoolManager::GetMemoryPoolMgr()->Destroy(mp);
CXformFactory::Shutdown();
#endif // GPOS_DEBUG
}
// EOF
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