!11176 Opt get_func by uniforming format

From: @liangzelang
Reviewed-by: @limingqi107,@kisnwang
Signed-off-by: @kisnwang

mindspore/ccsrc/backend/optimizer/mem_reuse/mem_dynamic_allocator.h

@@ -87,7 +87,8 @@ class DynamicMemPoolBestFit {
   void ReleaseDeviceRes();
   // Display the information of memory block and memory buf.
   void DumpDynamicMemPoolInfo();
-  SizeMapMemBuf GetIdleMemBufMap() { return global_idle_mem_buf_map_; }
+  // Get the map of global idle mem buf and size.
+  SizeMapMemBuf global_idle_mem_buf_map() const { return global_idle_mem_buf_map_; }
 
   // Get the related memory statistics information.
   size_t total_mem_statistics() const { return total_mem_statistics_; }

mindspore/ccsrc/runtime/device/ascend/ascend_memory_pool.cc

@@ -63,7 +63,7 @@ bool AscendMemoryPool::FreeDeviceMem(const DeviceMemPtr &addr) {
 }
 
 void AscendMemoryPool::ResetIdleMemBuf() {
-  auto idle_mem_buf_map = DynamicMemPoolBestFit::GetIdleMemBufMap();
+  auto idle_mem_buf_map = DynamicMemPoolBestFit::global_idle_mem_buf_map();
   for (auto &it : idle_mem_buf_map) {
     rtMemset(it.second->device_addr_, it.first, 0, it.first);
   }