From 1d4d4e73abb3beab4cda00f72e719189eb93f03f Mon Sep 17 00:00:00 2001
From: Yu Yang <yuyang18@baidu.com>
Date: Mon, 22 Oct 2018 18:00:48 +0800
Subject: [PATCH] Remove place hash

test=develop
---
 .../memory/allocation/allocator_facade.cc     |  3 +-
 paddle/fluid/platform/place.h                 | 60 -------------------
 2 files changed, 1 insertion(+), 62 deletions(-)

diff --git a/paddle/fluid/memory/allocation/allocator_facade.cc b/paddle/fluid/memory/allocation/allocator_facade.cc
index f82668bffee..4170e294301 100644
--- a/paddle/fluid/memory/allocation/allocator_facade.cc
+++ b/paddle/fluid/memory/allocation/allocator_facade.cc
@@ -193,8 +193,7 @@ class CUDAPinnedManagedAllocator : public ChunkedManagedAllocator {
 
 class AllocatorFacadePrivate {
  public:
-  std::unordered_map<platform::Place, std::shared_ptr<ManagedAllocator>>
-      allocators_;
+  std::map<platform::Place, std::shared_ptr<ManagedAllocator>> allocators_;
 
   ~AllocatorFacadePrivate() = default;
 
diff --git a/paddle/fluid/platform/place.h b/paddle/fluid/platform/place.h
index 745a79014a7..a095d4929ec 100644
--- a/paddle/fluid/platform/place.h
+++ b/paddle/fluid/platform/place.h
@@ -131,65 +131,5 @@ typename Visitor::result_type VisitPlace(const Place &place,
   return boost::apply_visitor(PlaceVisitorWrapper<Visitor>(visitor), place);
 }
 
-struct PlaceHashVisitor : public boost::static_visitor<size_t> {
-  template <typename Place>
-  inline size_t operator()(const Place &place) const {
-    return place.hash();
-  }
-};
-
 }  // namespace platform
 }  // namespace paddle
-
-namespace std {
-
-template <>
-struct hash<::paddle::platform::CPUPlace> {
-  using argument_type = ::paddle::platform::CPUPlace;
-  using result_type = size_t;
-
-  constexpr inline result_type operator()(const argument_type &place) const {
-    return static_cast<result_type>(-1);
-  }
-};
-
-template <>
-struct hash<::paddle::platform::CUDAPlace> {
-  using argument_type = ::paddle::platform::CUDAPlace;
-  using result_type = size_t;
-
-  inline result_type operator()(const argument_type &place) const {
-    return static_cast<result_type>(place.device);
-  }
-};
-
-template <>
-struct hash<::paddle::platform::CUDAPinnedPlace> {
-  using argument_type = ::paddle::platform::CUDAPinnedPlace;
-  using result_type = size_t;
-
-  constexpr inline result_type operator()(const argument_type &place) const {
-    return static_cast<result_type>(-2);
-  }
-};
-
-namespace {  // NOLINT
-struct PlaceHashVisitor : public boost::static_visitor<size_t> {
-  template <typename Place>
-  inline size_t operator()(const Place &place) const {
-    return std::hash<Place>()(place);
-  }
-};
-}
-
-template <>
-struct hash<::paddle::platform::Place> {
-  using argument_type = ::paddle::platform::Place;
-  using result_type = size_t;
-
-  inline result_type operator()(const argument_type &place) const {
-    return boost::apply_visitor(PlaceHashVisitor(), place);
-  }
-};
-
-}  // namespace std
-- 
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