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lammps/lib/gpu/cudpp_mini/cudpp_plan_manager.cpp
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cudpp_plan_manager.cpp
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// -------------------------------------------------------------
// cuDPP -- CUDA Data Parallel Primitives library
// -------------------------------------------------------------
// $Revision: 3572$
// $Date: 2007-11-19 13:58:06 +0000 (Mon, 19 Nov 2007) $
// -------------------------------------------------------------
// This source code is distributed under the terms of license.txt
// in the root directory of this source distribution.
// -------------------------------------------------------------
#include "cudpp.h"
#include "cudpp_plan.h"
#include "cudpp_plan_manager.h"
#include "cudpp_maximal_launch.h"
typedef void* KernelPointer;
extern "C" size_t getNumCTAs(KernelPointer kernel)
{
return CUDPPPlanManager::numCTAs(kernel);
}
extern "C" void compNumCTAs(KernelPointer kernel, size_t bytesDynamicSharedMem, size_t threadsPerBlock)
{
CUDPPPlanManager::computeNumCTAs(kernel, bytesDynamicSharedMem, threadsPerBlock);
}
//! @internal Instantiate the plan manager singleton object
void CUDPPPlanManager::Instantiate()
{
if (NULL == m_instance)
m_instance = new CUDPPPlanManager;
}
//! @internal Destroy the plan manager singleton object
void CUDPPPlanManager::Destroy()
{
if (NULL != m_instance)
{
delete m_instance;
m_instance = NULL;
}
}
/** @brief Plan Manager destructor
* Destroys all plans as well as the plan manager.
*/
CUDPPPlanManager::~CUDPPPlanManager()
{
std::map<CUDPPHandle,CUDPPPlan*>::iterator it;
for (it = m_instance->plans.begin(); it != m_instance->plans.end(); it++)
{
CUDPPPlan* plan = it->second;
delete plan;
plan = NULL;
}
m_instance->plans.clear();
m_instance->numCTAsTable.clear();
}
/** @brief Add a plan to the plan manager
*
* @returns a valid CUDPPHandle if the plan was successfully added, or
* CUDPP_INVALID_HANDLE otherwise
* @param[in] plan The plan to add
*/
CUDPPHandle CUDPPPlanManager::AddPlan(CUDPPPlan* plan)
{
Instantiate();
std::pair<std::map<CUDPPHandle, CUDPPPlan*>::iterator, bool> ret;
CUDPPHandle handle = (CUDPPHandle)m_instance->plans.size();
ret = m_instance->plans.insert(std::pair<CUDPPHandle,CUDPPPlan*>(handle, plan));
if (ret.second == true)
return handle;
else
return CUDPP_INVALID_HANDLE;
}
/** @brief Remove a plan from the plan manager
*
* @returns true if the plan was successfully removed, false otherwise
* @param[in] handle The handle to the plan to remove
*/
bool CUDPPPlanManager::RemovePlan(CUDPPHandle handle)
{
if (m_instance == NULL)
{
return false;
}
std::map<CUDPPHandle,CUDPPPlan*>::iterator it;
it = m_instance->plans.find(handle);
if (it != m_instance->plans.end())
{
CUDPPPlan* plan = it->second;
delete plan;
plan = NULL;
m_instance->plans.erase(it);
if (0 == m_instance->plans.size())
{
Destroy();
}
return true;
}
else
{
return false;
}
}
/** @brief Get a plan from the plan manager by handle
*
* @returns A pointer to the plan if found, or NULL otherwise
* @param handle The handle to the requested plan
*/
CUDPPPlan* CUDPPPlanManager::GetPlan(CUDPPHandle handle)
{
if (m_instance == NULL)
{
return NULL;
}
std::map<CUDPPHandle, CUDPPPlan*>::iterator it;
it = m_instance->plans.find(handle);
if (it != m_instance->plans.end())
{
return it->second;
}
else
{
return NULL;
}
}
size_t CUDPPPlanManager::numCTAs(KernelPointer kernel)
{
if (m_instance == NULL)
{
return 0;
}
return m_instance->numCTAsTable[kernel];
}
void CUDPPPlanManager::computeNumCTAs(KernelPointer kernel, size_t bytesDynamicSharedMem, size_t threadsPerBlock)
{
Instantiate();
m_instance->numCTAsTable[kernel] = maxBlocks(kernel, bytesDynamicSharedMem, threadsPerBlock);
}
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