Rename `MemoryPool` to `ResourceManager`

extras/tests/CMakeLists.txt

@@ -20,7 +20,7 @@ add_subdirectory(JsonDocument)
 add_subdirectory(JsonObject)
 add_subdirectory(JsonSerializer)
 add_subdirectory(JsonVariant)
-add_subdirectory(MemoryPool)
+add_subdirectory(ResourceManager)
 add_subdirectory(Misc)
 add_subdirectory(MixedConfiguration)
 add_subdirectory(MsgPackDeserializer)

extras/tests/JsonDeserializer/array.cpp

@@ -308,8 +308,6 @@ TEST_CASE("deserialize JSON array under memory constraints") {
     deserializeJson(doc, "  [ \"1234567\" ] ");
 
     REQUIRE(sizeofArray(1) + sizeofString(7) == doc.memoryUsage());
-    // note: we use a string of 8 bytes to be sure that the MemoryPool
-    // will not insert bytes to enforce alignement
   }
 
   SECTION("Should clear the JsonArray") {

extras/tests/MemoryPool/allocVariant.cpp

@@ -1,51 +0,0 @@
-// ArduinoJson - https://arduinojson.org
-// Copyright © 2014-2023, Benoit BLANCHON
-// MIT License
-
-#include <ArduinoJson/Memory/MemoryPool.hpp>
-#include <ArduinoJson/Variant/VariantSlot.hpp>
-#include <catch.hpp>
-
-#include "Allocators.hpp"
-
-using namespace ArduinoJson::detail;
-
-TEST_CASE("new (pool) VariantSlot()") {
-  SECTION("Returns different pointer") {
-    MemoryPool pool(4096);
-
-    VariantSlot* s1 = new (&pool) VariantSlot();
-    REQUIRE(s1 != 0);
-    VariantSlot* s2 = new (&pool) VariantSlot();
-    REQUIRE(s2 != 0);
-
-    REQUIRE(s1 != s2);
-  }
-
-  SECTION("Returns aligned pointers") {
-    MemoryPool pool(4096);
-
-    REQUIRE(isAligned(new (&pool) VariantSlot()));
-    REQUIRE(isAligned(new (&pool) VariantSlot()));
-  }
-
-  SECTION("Returns zero if capacity is 0") {
-    MemoryPool pool(0);
-
-    REQUIRE(new (&pool) VariantSlot() == 0);
-  }
-
-  SECTION("Returns zero if buffer is null") {
-    MemoryPool pool(4096, FailingAllocator::instance());
-
-    REQUIRE(new (&pool) VariantSlot() == 0);
-  }
-
-  SECTION("Returns zero if capacity is insufficient") {
-    MemoryPool pool(sizeof(VariantSlot));
-
-    new (&pool) VariantSlot();
-
-    REQUIRE(new (&pool) VariantSlot() == 0);
-  }
-}

extras/tests/MemoryPool/saveString.cpp

@@ -1,68 +0,0 @@
-// ArduinoJson - https://arduinojson.org
-// Copyright © 2014-2023, Benoit BLANCHON
-// MIT License
-
-#include <ArduinoJson/Memory/MemoryPool.hpp>
-#include <ArduinoJson/Strings/StringAdapters.hpp>
-#include <catch.hpp>
-
-#include "Allocators.hpp"
-
-using namespace ArduinoJson::detail;
-
-static StringNode* saveString(MemoryPool& pool, const char* s) {
-  return pool.saveString(adaptString(s));
-}
-
-static StringNode* saveString(MemoryPool& pool, const char* s, size_t n) {
-  return pool.saveString(adaptString(s, n));
-}
-
-TEST_CASE("MemoryPool::saveString()") {
-  MemoryPool pool(32);
-
-  SECTION("Duplicates different strings") {
-    auto a = saveString(pool, "hello");
-    auto b = saveString(pool, "world");
-    REQUIRE(a->data != b->data);
-    REQUIRE(a->length == 5);
-    REQUIRE(b->length == 5);
-    REQUIRE(a->references == 1);
-    REQUIRE(b->references == 1);
-    REQUIRE(pool.size() == 2 * sizeofString(5));
-  }
-
-  SECTION("Deduplicates identical strings") {
-    auto a = saveString(pool, "hello");
-    auto b = saveString(pool, "hello");
-    REQUIRE(a == b);
-    REQUIRE(a->length == 5);
-    REQUIRE(a->references == 2);
-    REQUIRE(pool.size() == sizeofString(5));
-  }
-
-  SECTION("Deduplicates identical strings that contain NUL") {
-    auto a = saveString(pool, "hello\0world", 11);
-    auto b = saveString(pool, "hello\0world", 11);
-    REQUIRE(a == b);
-    REQUIRE(a->length == 11);
-    REQUIRE(a->references == 2);
-    REQUIRE(pool.size() == sizeofString(11));
-  }
-
-  SECTION("Don't stop on first NUL") {
-    auto a = saveString(pool, "hello");
-    auto b = saveString(pool, "hello\0world", 11);
-    REQUIRE(a != b);
-    REQUIRE(a->length == 5);
-    REQUIRE(b->length == 11);
-    REQUIRE(a->references == 1);
-    REQUIRE(b->references == 1);
-    REQUIRE(pool.size() == sizeofString(5) + sizeofString(11));
-  }
-
-  SECTION("Returns NULL when allocation fails") {
-    MemoryPool pool2(32, FailingAllocator::instance());
-    REQUIRE(saveString(pool2, "a") == nullptr);
-  }
-}

extras/tests/MemoryPool/size.cpp

@@ -1,35 +0,0 @@
-// ArduinoJson - https://arduinojson.org
-// Copyright © 2014-2023, Benoit BLANCHON
-// MIT License
-
-#include <ArduinoJson/Memory/MemoryPool.hpp>
-#include <ArduinoJson/Variant/VariantSlot.hpp>
-#include <catch.hpp>
-
-using namespace ArduinoJson::detail;
-
-TEST_CASE("MemoryPool::capacity()") {
-  const size_t capacity = 64;
-  MemoryPool pool(capacity);
-  REQUIRE(capacity == pool.capacity());
-}
-
-TEST_CASE("MemoryPool::size()") {
-  MemoryPool pool(4096);
-
-  SECTION("Initial size is 0") {
-    REQUIRE(0 == pool.size());
-  }
-
-  SECTION("Doesn't grow when memory pool is full") {
-    const size_t variantCount = pool.capacity() / sizeof(VariantSlot);
-
-    for (size_t i = 0; i < variantCount; i++)
-      new (&pool) VariantSlot();
-    size_t size = pool.size();
-
-    new (&pool) VariantSlot();
-
-    REQUIRE(size == pool.size());
-  }
-}

extras/tests/Misc/Utf8.cpp

@@ -10,8 +10,8 @@
 using namespace ArduinoJson::detail;
 
 static void testCodepoint(uint32_t codepoint, std::string expected) {
-  MemoryPool pool(4096);
-  StringBuilder str(&pool);
+  ResourceManager resources(4096);
+  StringBuilder str(&resources);
   str.startString();
 
   CAPTURE(codepoint);

extras/tests/MemoryPool/CMakeLists.txt → extras/tests/ResourceManager/CMakeLists.txt

@@ -2,7 +2,7 @@
 # Copyright © 2014-2023, Benoit BLANCHON
 # MIT License
 
-add_executable(MemoryPoolTests
+add_executable(ResourceManagerTests
 	allocVariant.cpp
 	clear.cpp
 	saveString.cpp
@@ -10,9 +10,9 @@ add_executable(MemoryPoolTests
 	StringBuilder.cpp
 )
 
-add_test(MemoryPool MemoryPoolTests)
+add_test(ResourceManager ResourceManagerTests)
 
-set_tests_properties(MemoryPool
+set_tests_properties(ResourceManager
 	PROPERTIES
 		LABELS "Catch"
 )

extras/tests/MemoryPool/StringBuilder.cpp → extras/tests/ResourceManager/StringBuilder.cpp

@@ -12,16 +12,16 @@ using namespace ArduinoJson::detail;
 TEST_CASE("StringBuilder") {
   ControllableAllocator controllableAllocator;
   SpyingAllocator spyingAllocator(&controllableAllocator);
-  MemoryPool pool(0, &spyingAllocator);
+  ResourceManager resources(0, &spyingAllocator);
 
   SECTION("Empty string") {
-    StringBuilder str(&pool);
+    StringBuilder str(&resources);
 
     str.startString();
     str.save();
 
-    REQUIRE(pool.size() == sizeofString(0));
-    REQUIRE(pool.overflowed() == false);
+    REQUIRE(resources.size() == sizeofString(0));
+    REQUIRE(resources.overflowed() == false);
     REQUIRE(spyingAllocator.log() ==
             AllocatorLog() << AllocatorLog::Allocate(sizeofString(31))
                            << AllocatorLog::Reallocate(sizeofString(31),
@@ -29,20 +29,20 @@ TEST_CASE("StringBuilder") {
   }
 
   SECTION("Short string fits in first allocation") {
-    StringBuilder str(&pool);
+    StringBuilder str(&resources);
 
     str.startString();
     str.append("hello");
 
     REQUIRE(str.isValid() == true);
     REQUIRE(str.str() == "hello");
-    REQUIRE(pool.overflowed() == false);
+    REQUIRE(resources.overflowed() == false);
     REQUIRE(spyingAllocator.log() ==
             AllocatorLog() << AllocatorLog::Allocate(sizeofString(31)));
   }
 
   SECTION("Long string needs reallocation") {
-    StringBuilder str(&pool);
+    StringBuilder str(&resources);
 
     str.startString();
     str.append(
@@ -53,7 +53,7 @@ TEST_CASE("StringBuilder") {
     REQUIRE(str.str() ==
             "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do "
             "eiusmod tempor incididunt ut labore et dolore magna aliqua.");
-    REQUIRE(pool.overflowed() == false);
+    REQUIRE(resources.overflowed() == false);
     REQUIRE(spyingAllocator.log() ==
             AllocatorLog() << AllocatorLog::Allocate(sizeofString(31))
                            << AllocatorLog::Reallocate(sizeofString(31),
@@ -63,7 +63,7 @@ TEST_CASE("StringBuilder") {
   }
 
   SECTION("Realloc fails") {
-    StringBuilder str(&pool);
+    StringBuilder str(&resources);
 
     str.startString();
     controllableAllocator.disable();
@@ -77,62 +77,62 @@ TEST_CASE("StringBuilder") {
                                                            sizeofString(63))
                            << AllocatorLog::Deallocate(sizeofString(31)));
     REQUIRE(str.isValid() == false);
-    REQUIRE(pool.overflowed() == true);
+    REQUIRE(resources.overflowed() == true);
   }
 
   SECTION("Initial allocation fails") {
-    StringBuilder str(&pool);
+    StringBuilder str(&resources);
 
     controllableAllocator.disable();
     str.startString();
 
     REQUIRE(str.isValid() == false);
-    REQUIRE(pool.overflowed() == true);
+    REQUIRE(resources.overflowed() == true);
     REQUIRE(spyingAllocator.log() ==
             AllocatorLog() << AllocatorLog::AllocateFail(sizeofString(31)));
   }
 }
 
-static StringNode* addStringToPool(MemoryPool& pool, const char* s) {
-  StringBuilder str(&pool);
+static StringNode* addStringToPool(ResourceManager& resources, const char* s) {
+  StringBuilder str(&resources);
   str.startString();
   str.append(s);
   return str.save();
 }
 
 TEST_CASE("StringBuilder::save() deduplicates strings") {
-  MemoryPool pool(4096);
+  ResourceManager resources(4096);
 
   SECTION("Basic") {
-    auto s1 = addStringToPool(pool, "hello");
-    auto s2 = addStringToPool(pool, "world");
-    auto s3 = addStringToPool(pool, "hello");
+    auto s1 = addStringToPool(resources, "hello");
+    auto s2 = addStringToPool(resources, "world");
+    auto s3 = addStringToPool(resources, "hello");
 
     REQUIRE(s1 == s3);
     REQUIRE(s2 != s3);
     REQUIRE(s1->references == 2);
     REQUIRE(s2->references == 1);
     REQUIRE(s3->references == 2);
-    REQUIRE(pool.size() == 2 * sizeofString(5));
+    REQUIRE(resources.size() == 2 * sizeofString(5));
   }
 
   SECTION("Requires terminator") {
-    auto s1 = addStringToPool(pool, "hello world");
-    auto s2 = addStringToPool(pool, "hello");
+    auto s1 = addStringToPool(resources, "hello world");
+    auto s2 = addStringToPool(resources, "hello");
 
     REQUIRE(s2 != s1);
     REQUIRE(s1->references == 1);
     REQUIRE(s2->references == 1);
-    REQUIRE(pool.size() == sizeofString(11) + sizeofString(5));
+    REQUIRE(resources.size() == sizeofString(11) + sizeofString(5));
   }
 
   SECTION("Don't overrun") {
-    auto s1 = addStringToPool(pool, "hello world");
-    auto s2 = addStringToPool(pool, "wor");
+    auto s1 = addStringToPool(resources, "hello world");
+    auto s2 = addStringToPool(resources, "wor");
 
     REQUIRE(s2 != s1);
     REQUIRE(s1->references == 1);
     REQUIRE(s2->references == 1);
-    REQUIRE(pool.size() == sizeofString(11) + sizeofString(3));
+    REQUIRE(resources.size() == sizeofString(11) + sizeofString(3));
   }
 }

extras/tests/ResourceManager/allocVariant.cpp

@@ -0,0 +1,51 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2023, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson/Memory/ResourceManager.hpp>
+#include <ArduinoJson/Variant/VariantSlot.hpp>
+#include <catch.hpp>
+
+#include "Allocators.hpp"
+
+using namespace ArduinoJson::detail;
+
+TEST_CASE("new (resources) VariantSlot()") {
+  SECTION("Returns different pointer") {
+    ResourceManager resources(4096);
+
+    VariantSlot* s1 = new (&resources) VariantSlot();
+    REQUIRE(s1 != 0);
+    VariantSlot* s2 = new (&resources) VariantSlot();
+    REQUIRE(s2 != 0);
+
+    REQUIRE(s1 != s2);
+  }
+
+  SECTION("Returns aligned pointers") {
+    ResourceManager resources(4096);
+
+    REQUIRE(isAligned(new (&resources) VariantSlot()));
+    REQUIRE(isAligned(new (&resources) VariantSlot()));
+  }
+
+  SECTION("Returns zero if capacity is 0") {
+    ResourceManager resources(0);
+
+    REQUIRE(new (&resources) VariantSlot() == 0);
+  }
+
+  SECTION("Returns zero if buffer is null") {
+    ResourceManager resources(4096, FailingAllocator::instance());
+
+    REQUIRE(new (&resources) VariantSlot() == 0);
+  }
+
+  SECTION("Returns zero if capacity is insufficient") {
+    ResourceManager resources(sizeof(VariantSlot));
+
+    new (&resources) VariantSlot();
+
+    REQUIRE(new (&resources) VariantSlot() == 0);
+  }
+}

extras/tests/MemoryPool/clear.cpp → extras/tests/ResourceManager/clear.cpp

@@ -2,7 +2,7 @@
 // Copyright © 2014-2023, Benoit BLANCHON
 // MIT License
 
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 #include <ArduinoJson/Strings/StringAdapters.hpp>
 #include <ArduinoJson/Variant/VariantSlot.hpp>
 #include <catch.hpp>
@@ -11,22 +11,22 @@ using namespace ArduinoJson::detail;
 
 static const size_t poolCapacity = 512;
 
-TEST_CASE("MemoryPool::clear()") {
-  MemoryPool pool(poolCapacity);
+TEST_CASE("ResourceManager::clear()") {
+  ResourceManager resources(poolCapacity);
 
   SECTION("Discards allocated variants") {
-    new (&pool) VariantSlot();
+    new (&resources) VariantSlot();
 
-    pool.clear();
-    REQUIRE(pool.size() == 0);
+    resources.clear();
+    REQUIRE(resources.size() == 0);
   }
 
   SECTION("Discards allocated strings") {
-    pool.saveString(adaptString("123456789"));
-    REQUIRE(pool.size() == sizeofString(9));
+    resources.saveString(adaptString("123456789"));
+    REQUIRE(resources.size() == sizeofString(9));
 
-    pool.clear();
+    resources.clear();
 
-    REQUIRE(pool.size() == 0);
+    REQUIRE(resources.size() == 0);
   }
 }

extras/tests/ResourceManager/saveString.cpp

@@ -0,0 +1,69 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2023, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson/Memory/ResourceManager.hpp>
+#include <ArduinoJson/Strings/StringAdapters.hpp>
+#include <catch.hpp>
+
+#include "Allocators.hpp"
+
+using namespace ArduinoJson::detail;
+
+static StringNode* saveString(ResourceManager& resources, const char* s) {
+  return resources.saveString(adaptString(s));
+}
+
+static StringNode* saveString(ResourceManager& resources, const char* s,
+                              size_t n) {
+  return resources.saveString(adaptString(s, n));
+}
+
+TEST_CASE("ResourceManager::saveString()") {
+  ResourceManager resources(32);
+
+  SECTION("Duplicates different strings") {
+    auto a = saveString(resources, "hello");
+    auto b = saveString(resources, "world");
+    REQUIRE(a->data != b->data);
+    REQUIRE(a->length == 5);
+    REQUIRE(b->length == 5);
+    REQUIRE(a->references == 1);
+    REQUIRE(b->references == 1);
+    REQUIRE(resources.size() == 2 * sizeofString(5));
+  }
+
+  SECTION("Deduplicates identical strings") {
+    auto a = saveString(resources, "hello");
+    auto b = saveString(resources, "hello");
+    REQUIRE(a == b);
+    REQUIRE(a->length == 5);
+    REQUIRE(a->references == 2);
+    REQUIRE(resources.size() == sizeofString(5));
+  }
+
+  SECTION("Deduplicates identical strings that contain NUL") {
+    auto a = saveString(resources, "hello\0world", 11);
+    auto b = saveString(resources, "hello\0world", 11);
+    REQUIRE(a == b);
+    REQUIRE(a->length == 11);
+    REQUIRE(a->references == 2);
+    REQUIRE(resources.size() == sizeofString(11));
+  }
+
+  SECTION("Don't stop on first NUL") {
+    auto a = saveString(resources, "hello");
+    auto b = saveString(resources, "hello\0world", 11);
+    REQUIRE(a != b);
+    REQUIRE(a->length == 5);
+    REQUIRE(b->length == 11);
+    REQUIRE(a->references == 1);
+    REQUIRE(b->references == 1);
+    REQUIRE(resources.size() == sizeofString(5) + sizeofString(11));
+  }
+
+  SECTION("Returns NULL when allocation fails") {
+    ResourceManager pool2(32, FailingAllocator::instance());
+    REQUIRE(saveString(pool2, "a") == nullptr);
+  }
+}

extras/tests/ResourceManager/size.cpp

@@ -0,0 +1,35 @@
+// ArduinoJson - https://arduinojson.org
+// Copyright © 2014-2023, Benoit BLANCHON
+// MIT License
+
+#include <ArduinoJson/Memory/ResourceManager.hpp>
+#include <ArduinoJson/Variant/VariantSlot.hpp>
+#include <catch.hpp>
+
+using namespace ArduinoJson::detail;
+
+TEST_CASE("ResourceManager::capacity()") {
+  const size_t capacity = 64;
+  ResourceManager resources(capacity);
+  REQUIRE(capacity == resources.capacity());
+}
+
+TEST_CASE("ResourceManager::size()") {
+  ResourceManager resources(4096);
+
+  SECTION("Initial size is 0") {
+    REQUIRE(0 == resources.size());
+  }
+
+  SECTION("Doesn't grow when memory pool is full") {
+    const size_t variantCount = resources.capacity() / sizeof(VariantSlot);
+
+    for (size_t i = 0; i < variantCount; i++)
+      new (&resources) VariantSlot();
+    size_t size = resources.size();
+
+    new (&resources) VariantSlot();
+
+    REQUIRE(size == resources.size());
+  }
+}

src/ArduinoJson/Array/ElementProxy.hpp

@@ -40,8 +40,8 @@ class ElementProxy : public VariantRefBase<ElementProxy<TUpstream>>,
   }
 
  private:
-  FORCE_INLINE MemoryPool* getPool() const {
-    return VariantAttorney::getPool(upstream_);
+  FORCE_INLINE ResourceManager* getResourceManager() const {
+    return VariantAttorney::getResourceManager(upstream_);
   }
 
   FORCE_INLINE VariantData* getData() const {
@@ -49,8 +49,9 @@ class ElementProxy : public VariantRefBase<ElementProxy<TUpstream>>,
   }
 
   FORCE_INLINE VariantData* getOrCreateData() const {
-    return variantGetOrAddElement(VariantAttorney::getOrCreateData(upstream_),
-                                  index_, VariantAttorney::getPool(upstream_));
+    return variantGetOrAddElement(
+        VariantAttorney::getOrCreateData(upstream_), index_,
+        VariantAttorney::getResourceManager(upstream_));
   }
 
   TUpstream upstream_;

src/ArduinoJson/Array/JsonArray.hpp

@@ -21,17 +21,19 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   typedef JsonArrayIterator iterator;
 
   // Constructs an unbound reference.
-  FORCE_INLINE JsonArray() : data_(0), pool_(0) {}
+  FORCE_INLINE JsonArray() : data_(0), resources_(0) {}
 
   // INTERNAL USE ONLY
-  FORCE_INLINE JsonArray(detail::MemoryPool* pool, detail::CollectionData* data)
-      : data_(data), pool_(pool) {}
+  FORCE_INLINE JsonArray(detail::ResourceManager* resources,
+                         detail::CollectionData* data)
+      : data_(data), resources_(resources) {}
 
   // Returns a JsonVariant pointing to the array.
   // https://arduinojson.org/v6/api/jsonvariant/
   operator JsonVariant() {
     void* data = data_;  // prevent warning cast-align
-    return JsonVariant(pool_, reinterpret_cast<detail::VariantData*>(data));
+    return JsonVariant(resources_,
+                       reinterpret_cast<detail::VariantData*>(data));
   }
 
   // Returns a read-only reference to the array.
@@ -44,7 +46,7 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   // Returns a reference to the new element.
   // https://arduinojson.org/v6/api/jsonarray/add/
   JsonVariant add() const {
-    return JsonVariant(pool_, collectionAddElement(data_, pool_));
+    return JsonVariant(resources_, collectionAddElement(data_, resources_));
   }
 
   // Appends a value to the array.
@@ -66,7 +68,7 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   FORCE_INLINE iterator begin() const {
     if (!data_)
       return iterator();
-    return iterator(pool_, data_->head());
+    return iterator(resources_, data_->head());
   }
 
   // Returns an iterator following the last element of the array.
@@ -78,7 +80,7 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   // Copies an array.
   // https://arduinojson.org/v6/api/jsonarray/set/
   FORCE_INLINE bool set(JsonArrayConst src) const {
-    return collectionCopy(data_, src.data_, pool_);
+    return collectionCopy(data_, src.data_, resources_);
   }
 
   // Compares the content of two arrays.
@@ -90,21 +92,21 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   // ⚠️ Doesn't release the memory associated with the removed element.
   // https://arduinojson.org/v6/api/jsonarray/remove/
   FORCE_INLINE void remove(iterator it) const {
-    collectionRemove(data_, it.slot_, pool_);
+    collectionRemove(data_, it.slot_, resources_);
   }
 
   // Removes the element at the specified index.
   // ⚠️ Doesn't release the memory associated with the removed element.
   // https://arduinojson.org/v6/api/jsonarray/remove/
   FORCE_INLINE void remove(size_t index) const {
-    collectionRemoveElement(data_, index, pool_);
+    collectionRemoveElement(data_, index, resources_);
   }
 
   // Removes all the elements of the array.
   // ⚠️ Doesn't release the memory associated with the removed elements.
   // https://arduinojson.org/v6/api/jsonarray/clear/
   void clear() const {
-    collectionClear(data_, pool_);
+    collectionClear(data_, resources_);
   }
 
   // Gets or sets the element at the specified index.
@@ -158,8 +160,8 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   }
 
  private:
-  detail::MemoryPool* getPool() const {
-    return pool_;
+  detail::ResourceManager* getResourceManager() const {
+    return resources_;
   }
 
   detail::VariantData* getData() const {
@@ -171,19 +173,19 @@ class JsonArray : public detail::VariantOperators<JsonArray> {
   }
 
   detail::CollectionData* data_;
-  detail::MemoryPool* pool_;
+  detail::ResourceManager* resources_;
 };
 
 template <>
 struct Converter<JsonArray> : private detail::VariantAttorney {
   static void toJson(JsonVariantConst src, JsonVariant dst) {
-    variantCopyFrom(getData(dst), getData(src), getPool(dst));
+    variantCopyFrom(getData(dst), getData(src), getResourceManager(dst));
   }
 
   static JsonArray fromJson(JsonVariant src) {
     auto data = getData(src);
-    auto pool = getPool(src);
-    return JsonArray(pool, data != 0 ? data->asArray() : 0);
+    auto resources = getResourceManager(src);
+    return JsonArray(resources, data != 0 ? data->asArray() : 0);
   }
 
   static detail::InvalidConversion<JsonVariantConst, JsonArray> fromJson(
@@ -207,7 +209,8 @@ template <typename TDerived>
 template <typename T>
 inline typename enable_if<is_same<T, JsonArray>::value, JsonArray>::type
 VariantRefBase<TDerived>::to() const {
-  return JsonArray(getPool(), variantToArray(getOrCreateData(), getPool()));
+  return JsonArray(getResourceManager(),
+                   variantToArray(getOrCreateData(), getResourceManager()));
 }
 
 ARDUINOJSON_END_PRIVATE_NAMESPACE

src/ArduinoJson/Array/JsonArrayConst.hpp

@@ -118,7 +118,7 @@ class JsonArrayConst : public detail::VariantOperators<JsonArrayConst> {
 template <>
 struct Converter<JsonArrayConst> : private detail::VariantAttorney {
   static void toJson(JsonVariantConst src, JsonVariant dst) {
-    variantCopyFrom(getData(dst), getData(src), getPool(dst));
+    variantCopyFrom(getData(dst), getData(src), getResourceManager(dst));
   }
 
   static JsonArrayConst fromJson(JsonVariantConst src) {

src/ArduinoJson/Array/JsonArrayIterator.hpp

@@ -11,8 +11,8 @@ ARDUINOJSON_BEGIN_PUBLIC_NAMESPACE
 
 class VariantPtr {
  public:
-  VariantPtr(detail::MemoryPool* pool, detail::VariantData* data)
-      : variant_(pool, data) {}
+  VariantPtr(detail::ResourceManager* resources, detail::VariantData* data)
+      : variant_(resources, data) {}
 
   JsonVariant* operator->() {
     return &variant_;
@@ -31,15 +31,15 @@ class JsonArrayIterator {
 
  public:
   JsonArrayIterator() : slot_(0) {}
-  explicit JsonArrayIterator(detail::MemoryPool* pool,
+  explicit JsonArrayIterator(detail::ResourceManager* resources,
                              detail::VariantSlot* slot)
-      : pool_(pool), slot_(slot) {}
+      : resources_(resources), slot_(slot) {}
 
   JsonVariant operator*() const {
-    return JsonVariant(pool_, slot_->data());
+    return JsonVariant(resources_, slot_->data());
   }
   VariantPtr operator->() {
-    return VariantPtr(pool_, slot_->data());
+    return VariantPtr(resources_, slot_->data());
   }
 
   bool operator==(const JsonArrayIterator& other) const {
@@ -61,7 +61,7 @@ class JsonArrayIterator {
   }
 
  private:
-  detail::MemoryPool* pool_;
+  detail::ResourceManager* resources_;
   detail::VariantSlot* slot_;
 };
 

src/ArduinoJson/Collection/CollectionFunctions.hpp

@@ -9,10 +9,10 @@
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
 inline VariantData* collectionAddElement(CollectionData* array,
-                                         MemoryPool* pool) {
+                                         ResourceManager* resources) {
   if (!array)
     return nullptr;
-  auto slot = new (pool) VariantSlot();
+  auto slot = new (resources) VariantSlot();
   if (!slot)
     return nullptr;
   array->add(slot);
@@ -21,16 +21,16 @@ inline VariantData* collectionAddElement(CollectionData* array,
 
 template <typename TAdaptedString>
 inline VariantData* collectionAddMember(CollectionData* obj, TAdaptedString key,
-                                        MemoryPool* pool) {
+                                        ResourceManager* resources) {
   ARDUINOJSON_ASSERT(!key.isNull());
   ARDUINOJSON_ASSERT(obj != nullptr);
-  auto slot = new (pool) VariantSlot();
+  auto slot = new (resources) VariantSlot();
   if (!slot)
     return nullptr;
   if (key.isLinked())
     slot->setKey(key.data());
   else {
-    auto storedKey = pool->saveString(key);
+    auto storedKey = resources->saveString(key);
     if (!storedKey)
       return nullptr;
     slot->setKey(storedKey);
@@ -39,31 +39,31 @@ inline VariantData* collectionAddMember(CollectionData* obj, TAdaptedString key,
   return slot->data();
 }
 
-inline void collectionClear(CollectionData* c, MemoryPool* pool) {
+inline void collectionClear(CollectionData* c, ResourceManager* resources) {
   if (!c)
     return;
   for (auto slot = c->head(); slot; slot = slot->next())
-    slotRelease(slot, pool);
+    slotRelease(slot, resources);
   c->clear();
 }
 
 inline bool collectionCopy(CollectionData* dst, const CollectionData* src,
-                           MemoryPool* pool) {
+                           ResourceManager* resources) {
   if (!dst || !src)
     return false;
 
-  collectionClear(dst, pool);
+  collectionClear(dst, resources);
 
   for (VariantSlot* s = src->head(); s; s = s->next()) {
     VariantData* var;
     if (s->key() != 0) {
       JsonString key(s->key(),
                      s->ownsKey() ? JsonString::Copied : JsonString::Linked);
-      var = collectionAddMember(dst, adaptString(key), pool);
+      var = collectionAddMember(dst, adaptString(key), resources);
     } else {
-      var = collectionAddElement(dst, pool);
+      var = collectionAddElement(dst, resources);
     }
-    if (!variantCopyFrom(var, s->data(), pool))
+    if (!variantCopyFrom(var, s->data(), resources))
       return false;
   }
   return true;
@@ -78,26 +78,26 @@ inline VariantData* collectionGetMember(const CollectionData* obj,
 }
 
 inline void collectionRemove(CollectionData* data, VariantSlot* slot,
-                             MemoryPool* pool) {
+                             ResourceManager* resources) {
   if (!data || !slot)
     return;
   data->remove(slot);
-  slotRelease(slot, pool);
+  slotRelease(slot, resources);
 }
 
 inline void collectionRemoveElement(CollectionData* array, size_t index,
-                                    MemoryPool* pool) {
+                                    ResourceManager* resources) {
   if (!array)
     return;
-  collectionRemove(array, array->get(index), pool);
+  collectionRemove(array, array->get(index), resources);
 }
 
 template <typename TAdaptedString>
 inline void collectionRemoveMember(CollectionData* obj, TAdaptedString key,
-                                   MemoryPool* pool) {
+                                   ResourceManager* resources) {
   if (!obj)
     return;
-  collectionRemove(obj, obj->get(key), pool);
+  collectionRemove(obj, obj->get(key), resources);
 }
 
 ARDUINOJSON_END_PRIVATE_NAMESPACE

src/ArduinoJson/Deserialization/deserialize.hpp

@@ -23,9 +23,10 @@ struct first_or_void<T, Rest...> {
 };
 
 template <template <typename> class TDeserializer, typename TReader>
-TDeserializer<TReader> makeDeserializer(MemoryPool* pool, TReader reader) {
-  ARDUINOJSON_ASSERT(pool != 0);
-  return TDeserializer<TReader>(pool, reader);
+TDeserializer<TReader> makeDeserializer(ResourceManager* resources,
+                                        TReader reader) {
+  ARDUINOJSON_ASSERT(resources != 0);
+  return TDeserializer<TReader>(resources, reader);
 }
 
 template <template <typename> class TDeserializer, typename TStream,
@@ -36,10 +37,10 @@ DeserializationError deserialize(JsonDocument& doc, TStream&& input,
                                  Args... args) {
   auto reader = makeReader(detail::forward<TStream>(input));
   auto data = VariantAttorney::getData(doc);
-  auto pool = VariantAttorney::getPool(doc);
+  auto resources = VariantAttorney::getResourceManager(doc);
   auto options = makeDeserializationOptions(args...);
   doc.clear();
-  return makeDeserializer<TDeserializer>(pool, reader)
+  return makeDeserializer<TDeserializer>(resources, reader)
       .parse(*data, options.filter, options.nestingLimit);
 }
 
@@ -50,10 +51,10 @@ DeserializationError deserialize(JsonDocument& doc, TChar* input,
                                  Size inputSize, Args... args) {
   auto reader = makeReader(input, size_t(inputSize));
   auto data = VariantAttorney::getData(doc);
-  auto pool = VariantAttorney::getPool(doc);
+  auto resources = VariantAttorney::getResourceManager(doc);
   auto options = makeDeserializationOptions(args...);
   doc.clear();
-  return makeDeserializer<TDeserializer>(pool, reader)
+  return makeDeserializer<TDeserializer>(resources, reader)
       .parse(*data, options.filter, options.nestingLimit);
 }
 

src/ArduinoJson/Document/JsonDocument.hpp

@@ -6,7 +6,7 @@
 
 #include <ArduinoJson/Array/ElementProxy.hpp>
 #include <ArduinoJson/Memory/Allocator.hpp>
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 #include <ArduinoJson/Object/JsonObject.hpp>
 #include <ArduinoJson/Object/MemberProxy.hpp>
 #include <ArduinoJson/Polyfills/utility.hpp>
@@ -23,16 +23,16 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
  public:
   explicit JsonDocument(size_t capa,
                         Allocator* alloc = detail::DefaultAllocator::instance())
-      : pool_(capa, alloc) {}
+      : resources_(capa, alloc) {}
 
   // Copy-constructor
   JsonDocument(const JsonDocument& src)
-      : JsonDocument(src.pool_.capacity(), src.allocator()) {
+      : JsonDocument(src.resources_.capacity(), src.allocator()) {
     set(src);
   }
 
   // Move-constructor
-  JsonDocument(JsonDocument&& src) : pool_(0, src.allocator()) {
+  JsonDocument(JsonDocument&& src) : resources_(0, src.allocator()) {
     // TODO: use the copy and swap idiom
     moveAssignFrom(src);
   }
@@ -73,20 +73,20 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   template <typename T>
   JsonDocument& operator=(const T& src) {
     size_t requiredSize = src.memoryUsage();
-    if (requiredSize > pool_.capacity())
-      pool_.reallocPool(requiredSize);
+    if (requiredSize > resources_.capacity())
+      resources_.reallocPool(requiredSize);
     set(src);
     return *this;
   }
 
   Allocator* allocator() const {
-    return pool_.allocator();
+    return resources_.allocator();
   }
 
   // Reduces the capacity of the memory pool to match the current usage.
   // https://arduinojson.org/v6/api/JsonDocument/shrinktofit/
   void shrinkToFit() {
-    auto offset = pool_.shrinkToFit();
+    auto offset = resources_.shrinkToFit();
     data_.movePointers(offset);
   }
 
@@ -95,7 +95,7 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   bool garbageCollect() {
     // make a temporary clone and move assign
     JsonDocument tmp(*this);
-    if (!tmp.pool_.capacity())
+    if (!tmp.resources_.capacity())
       return false;
     moveAssignFrom(tmp);
     return true;
@@ -118,7 +118,7 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   // Empties the document and resets the memory pool
   // https://arduinojson.org/v6/api/jsondocument/clear/
   void clear() {
-    pool_.clear();
+    resources_.clear();
     data_.reset();
   }
 
@@ -145,13 +145,13 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   // Returns the number of used bytes in the memory pool.
   // https://arduinojson.org/v6/api/jsondocument/memoryusage/
   size_t memoryUsage() const {
-    return pool_.size();
+    return resources_.size();
   }
 
   // Returns trues if the memory pool was too small.
   // https://arduinojson.org/v6/api/jsondocument/overflowed/
   bool overflowed() const {
-    return pool_.overflowed();
+    return resources_.overflowed();
   }
 
   // Returns the depth (nesting level) of the array.
@@ -297,7 +297,7 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   // Returns a reference to the new element.
   // https://arduinojson.org/v6/api/jsondocument/add/
   FORCE_INLINE JsonVariant add() {
-    return JsonVariant(&pool_, data_.addElement(&pool_));
+    return JsonVariant(&resources_, data_.addElement(&resources_));
   }
 
   // Appends a value to the root array.
@@ -318,7 +318,7 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   // ⚠️ Doesn't release the memory associated with the removed element.
   // https://arduinojson.org/v6/api/jsondocument/remove/
   FORCE_INLINE void remove(size_t index) {
-    variantRemoveElement(getData(), index, getPool());
+    variantRemoveElement(getData(), index, getResourceManager());
   }
 
   // Removes a member of the root object.
@@ -327,7 +327,8 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   template <typename TChar>
   FORCE_INLINE typename detail::enable_if<detail::IsString<TChar*>::value>::type
   remove(TChar* key) {
-    variantRemoveMember(getData(), detail::adaptString(key), getPool());
+    variantRemoveMember(getData(), detail::adaptString(key),
+                        getResourceManager());
   }
 
   // Removes a member of the root object.
@@ -337,7 +338,8 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   FORCE_INLINE
       typename detail::enable_if<detail::IsString<TString>::value>::type
       remove(const TString& key) {
-    variantRemoveMember(getData(), detail::adaptString(key), getPool());
+    variantRemoveMember(getData(), detail::adaptString(key),
+                        getResourceManager());
   }
 
   FORCE_INLINE operator JsonVariant() {
@@ -350,7 +352,7 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
 
  private:
   JsonVariant getVariant() {
-    return JsonVariant(&pool_, &data_);
+    return JsonVariant(&resources_, &data_);
   }
 
   JsonVariantConst getVariant() const {
@@ -358,18 +360,18 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
   }
 
   void copyAssignFrom(const JsonDocument& src) {
-    pool_.reallocPool(src.pool_.capacity());
+    resources_.reallocPool(src.resources_.capacity());
     set(src);
   }
 
   void moveAssignFrom(JsonDocument& src) {
     data_ = src.data_;
     src.data_.reset();
-    pool_ = move(src.pool_);
+    resources_ = move(src.resources_);
   }
 
-  detail::MemoryPool* getPool() {
-    return &pool_;
+  detail::ResourceManager* getResourceManager() {
+    return &resources_;
   }
 
   detail::VariantData* getData() {
@@ -384,7 +386,7 @@ class JsonDocument : public detail::VariantOperators<const JsonDocument&> {
     return &data_;
   }
 
-  detail::MemoryPool pool_;
+  detail::ResourceManager resources_;
   detail::VariantData data_;
 };
 

src/ArduinoJson/Json/JsonDeserializer.hpp

@@ -9,7 +9,7 @@
 #include <ArduinoJson/Json/Latch.hpp>
 #include <ArduinoJson/Json/Utf16.hpp>
 #include <ArduinoJson/Json/Utf8.hpp>
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 #include <ArduinoJson/Numbers/parseNumber.hpp>
 #include <ArduinoJson/Polyfills/assert.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
@@ -21,11 +21,11 @@ ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 template <typename TReader>
 class JsonDeserializer {
  public:
-  JsonDeserializer(MemoryPool* pool, TReader reader)
-      : stringBuilder_(pool),
+  JsonDeserializer(ResourceManager* resources, TReader reader)
+      : stringBuilder_(resources),
         foundSomething_(false),
         latch_(reader),
-        pool_(pool) {}
+        resources_(resources) {}
 
   template <typename TFilter>
   DeserializationError parse(VariantData& variant, TFilter filter,
@@ -172,7 +172,7 @@ class JsonDeserializer {
     for (;;) {
       if (elementFilter.allow()) {
         // Allocate slot in array
-        VariantData* value = collectionAddElement(&array, pool_);
+        VariantData* value = collectionAddElement(&array, resources_);
         if (!value)
           return DeserializationError::NoMemory;
 
@@ -279,14 +279,14 @@ class JsonDeserializer {
           auto savedKey = stringBuilder_.save();
 
           // Allocate slot in object
-          slot = new (pool_) VariantSlot();
+          slot = new (resources_) VariantSlot();
           if (!slot)
             return DeserializationError::NoMemory;
 
           slot->setKey(savedKey);
           object.add(slot);
         } else {
-          slot->data()->setNull(pool_);
+          slot->data()->setNull(resources_);
         }
 
         // Parse value
@@ -662,7 +662,7 @@ class JsonDeserializer {
   StringBuilder stringBuilder_;
   bool foundSomething_;
   Latch<TReader> latch_;
-  MemoryPool* pool_;
+  ResourceManager* resources_;
   char buffer_[64];  // using a member instead of a local variable because it
                      // ended in the recursive path after compiler inlined the
                      // code

src/ArduinoJson/Memory/MemoryPool.hpp → src/ArduinoJson/Memory/ResourceManager.hpp

@@ -15,22 +15,23 @@
 
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
-class MemoryPool {
+class ResourceManager {
  public:
-  MemoryPool(size_t capa, Allocator* allocator = DefaultAllocator::instance())
+  ResourceManager(size_t capa,
+                  Allocator* allocator = DefaultAllocator::instance())
       : allocator_(allocator), overflowed_(false) {
     allocPool(addPadding(capa));
   }
 
-  ~MemoryPool() {
+  ~ResourceManager() {
     deallocAllStrings();
     deallocPool();
   }
 
-  MemoryPool(const MemoryPool&) = delete;
-  MemoryPool& operator=(const MemoryPool& src) = delete;
+  ResourceManager(const ResourceManager&) = delete;
+  ResourceManager& operator=(const ResourceManager& src) = delete;
 
-  MemoryPool& operator=(MemoryPool&& src) {
+  ResourceManager& operator=(ResourceManager&& src) {
     deallocAllStrings();
     deallocPool();
     allocator_ = src.allocator_;

src/ArduinoJson/Memory/StringBuilder.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
@@ -12,26 +12,26 @@ class StringBuilder {
  public:
   static const size_t initialCapacity = 31;
 
-  StringBuilder(MemoryPool* pool) : pool_(pool) {}
+  StringBuilder(ResourceManager* resources) : resources_(resources) {}
 
   ~StringBuilder() {
     if (node_)
-      pool_->deallocString(node_);
+      resources_->deallocString(node_);
   }
 
   void startString() {
     size_ = 0;
     if (!node_)
-      node_ = pool_->allocString(initialCapacity);
+      node_ = resources_->allocString(initialCapacity);
   }
 
   StringNode* save() {
     ARDUINOJSON_ASSERT(node_ != nullptr);
     node_->data[size_] = 0;
-    StringNode* node = pool_->findString(adaptString(node_->data, size_));
+    StringNode* node = resources_->findString(adaptString(node_->data, size_));
     if (!node) {
-      node = pool_->reallocString(node_, size_);
-      pool_->addStringToList(node);
+      node = resources_->reallocString(node_, size_);
+      resources_->addStringToList(node);
       node_ = nullptr;  // next time we need a new string
     } else {
       node->references++;
@@ -51,7 +51,7 @@ class StringBuilder {
 
   void append(char c) {
     if (node_ && size_ == node_->length)
-      node_ = pool_->reallocString(node_, size_ * 2U + 1);
+      node_ = resources_->reallocString(node_, size_ * 2U + 1);
     if (node_)
       node_->data[size_++] = c;
   }
@@ -71,7 +71,7 @@ class StringBuilder {
   }
 
  private:
-  MemoryPool* pool_;
+  ResourceManager* resources_;
   StringNode* node_ = nullptr;
   size_t size_ = 0;
 };

src/ArduinoJson/MsgPack/MsgPackDeserializer.hpp

@@ -5,7 +5,7 @@
 #pragma once
 
 #include <ArduinoJson/Deserialization/deserialize.hpp>
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 #include <ArduinoJson/MsgPack/endianess.hpp>
 #include <ArduinoJson/MsgPack/ieee754.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
@@ -16,10 +16,10 @@ ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 template <typename TReader>
 class MsgPackDeserializer {
  public:
-  MsgPackDeserializer(MemoryPool* pool, TReader reader)
-      : pool_(pool),
+  MsgPackDeserializer(ResourceManager* resources, TReader reader)
+      : resources_(resources),
         reader_(reader),
-        stringBuilder_(pool),
+        stringBuilder_(resources),
         foundSomething_(false) {}
 
   template <typename TFilter>
@@ -434,7 +434,7 @@ class MsgPackDeserializer {
 
       if (elementFilter.allow()) {
         ARDUINOJSON_ASSERT(array != 0);
-        value = collectionAddElement(array, pool_);
+        value = collectionAddElement(array, resources_);
         if (!value)
           return DeserializationError::NoMemory;
       } else {
@@ -495,7 +495,7 @@ class MsgPackDeserializer {
         // Save key in memory pool.
         auto savedKey = stringBuilder_.save();
 
-        VariantSlot* slot = new (pool_) VariantSlot();
+        VariantSlot* slot = new (resources_) VariantSlot();
         if (!slot)
           return DeserializationError::NoMemory;
 
@@ -553,7 +553,7 @@ class MsgPackDeserializer {
     return skipBytes(size + 1U);
   }
 
-  MemoryPool* pool_;
+  ResourceManager* resources_;
   TReader reader_;
   StringBuilder stringBuilder_;
   bool foundSomething_;

src/ArduinoJson/Object/JsonObject.hpp

@@ -20,15 +20,17 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   typedef JsonObjectIterator iterator;
 
   // Creates an unbound reference.
-  FORCE_INLINE JsonObject() : data_(0), pool_(0) {}
+  FORCE_INLINE JsonObject() : data_(0), resources_(0) {}
 
   // INTERNAL USE ONLY
-  FORCE_INLINE JsonObject(detail::MemoryPool* buf, detail::CollectionData* data)
-      : data_(data), pool_(buf) {}
+  FORCE_INLINE JsonObject(detail::ResourceManager* buf,
+                          detail::CollectionData* data)
+      : data_(data), resources_(buf) {}
 
   operator JsonVariant() const {
     void* data = data_;  // prevent warning cast-align
-    return JsonVariant(pool_, reinterpret_cast<detail::VariantData*>(data));
+    return JsonVariant(resources_,
+                       reinterpret_cast<detail::VariantData*>(data));
   }
 
   operator JsonObjectConst() const {
@@ -74,7 +76,7 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   FORCE_INLINE iterator begin() const {
     if (!data_)
       return iterator();
-    return iterator(pool_, data_->head());
+    return iterator(resources_, data_->head());
   }
 
   // Returns an iterator following the last key-value pair of the object.
@@ -87,13 +89,13 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   // ⚠️ Doesn't release the memory associated with the removed members.
   // https://arduinojson.org/v6/api/jsonobject/clear/
   void clear() const {
-    collectionClear(data_, pool_);
+    collectionClear(data_, resources_);
   }
 
   // Copies an object.
   // https://arduinojson.org/v6/api/jsonobject/set/
   FORCE_INLINE bool set(JsonObjectConst src) {
-    return collectionCopy(data_, src.data_, pool_);
+    return collectionCopy(data_, src.data_, resources_);
   }
 
   // Compares the content of two objects.
@@ -125,7 +127,7 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   // ⚠️ Doesn't release the memory associated with the removed member.
   // https://arduinojson.org/v6/api/jsonobject/remove/
   FORCE_INLINE void remove(iterator it) const {
-    collectionRemove(data_, it.slot_, pool_);
+    collectionRemove(data_, it.slot_, resources_);
   }
 
   // Removes the member with the specified key.
@@ -133,7 +135,7 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   // https://arduinojson.org/v6/api/jsonobject/remove/
   template <typename TString>
   FORCE_INLINE void remove(const TString& key) const {
-    collectionRemoveMember(data_, detail::adaptString(key), pool_);
+    collectionRemoveMember(data_, detail::adaptString(key), resources_);
   }
 
   // Removes the member with the specified key.
@@ -141,7 +143,7 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   // https://arduinojson.org/v6/api/jsonobject/remove/
   template <typename TChar>
   FORCE_INLINE void remove(TChar* key) const {
-    collectionRemoveMember(data_, detail::adaptString(key), pool_);
+    collectionRemoveMember(data_, detail::adaptString(key), resources_);
   }
 
   // Returns true if the object contains the specified key.
@@ -187,8 +189,8 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
   }
 
  private:
-  detail::MemoryPool* getPool() const {
-    return pool_;
+  detail::ResourceManager* getResourceManager() const {
+    return resources_;
   }
 
   detail::VariantData* getData() const {
@@ -201,23 +203,23 @@ class JsonObject : public detail::VariantOperators<JsonObject> {
 
   template <typename TAdaptedString>
   void removeMember(TAdaptedString key) const {
-    collectionRemove(data_, data_->get(key), pool_);
+    collectionRemove(data_, data_->get(key), resources_);
   }
 
   detail::CollectionData* data_;
-  detail::MemoryPool* pool_;
+  detail::ResourceManager* resources_;
 };
 
 template <>
 struct Converter<JsonObject> : private detail::VariantAttorney {
   static void toJson(JsonVariantConst src, JsonVariant dst) {
-    variantCopyFrom(getData(dst), getData(src), getPool(dst));
+    variantCopyFrom(getData(dst), getData(src), getResourceManager(dst));
   }
 
   static JsonObject fromJson(JsonVariant src) {
     auto data = getData(src);
-    auto pool = getPool(src);
-    return JsonObject(pool, data != 0 ? data->asObject() : 0);
+    auto resources = getResourceManager(src);
+    return JsonObject(resources, data != 0 ? data->asObject() : 0);
   }
 
   static detail::InvalidConversion<JsonVariantConst, JsonObject> fromJson(
@@ -241,7 +243,8 @@ template <typename TDerived>
 template <typename T>
 typename enable_if<is_same<T, JsonObject>::value, JsonObject>::type
 VariantRefBase<TDerived>::to() const {
-  return JsonObject(getPool(), variantToObject(getOrCreateData(), getPool()));
+  return JsonObject(getResourceManager(),
+                    variantToObject(getOrCreateData(), getResourceManager()));
 }
 
 ARDUINOJSON_END_PRIVATE_NAMESPACE

src/ArduinoJson/Object/JsonObjectConst.hpp

@@ -134,7 +134,7 @@ class JsonObjectConst : public detail::VariantOperators<JsonObjectConst> {
 template <>
 struct Converter<JsonObjectConst> : private detail::VariantAttorney {
   static void toJson(JsonVariantConst src, JsonVariant dst) {
-    variantCopyFrom(getData(dst), getData(src), getPool(dst));
+    variantCopyFrom(getData(dst), getData(src), getResourceManager(dst));
   }
 
   static JsonObjectConst fromJson(JsonVariantConst src) {

src/ArduinoJson/Object/JsonObjectIterator.hpp

@@ -11,8 +11,8 @@ ARDUINOJSON_BEGIN_PUBLIC_NAMESPACE
 
 class JsonPairPtr {
  public:
-  JsonPairPtr(detail::MemoryPool* pool, detail::VariantSlot* slot)
-      : pair_(pool, slot) {}
+  JsonPairPtr(detail::ResourceManager* resources, detail::VariantSlot* slot)
+      : pair_(resources, slot) {}
 
   const JsonPair* operator->() const {
     return &pair_;
@@ -32,15 +32,15 @@ class JsonObjectIterator {
  public:
   JsonObjectIterator() : slot_(0) {}
 
-  explicit JsonObjectIterator(detail::MemoryPool* pool,
+  explicit JsonObjectIterator(detail::ResourceManager* resources,
                               detail::VariantSlot* slot)
-      : pool_(pool), slot_(slot) {}
+      : resources_(resources), slot_(slot) {}
 
   JsonPair operator*() const {
-    return JsonPair(pool_, slot_);
+    return JsonPair(resources_, slot_);
   }
   JsonPairPtr operator->() {
-    return JsonPairPtr(pool_, slot_);
+    return JsonPairPtr(resources_, slot_);
   }
 
   bool operator==(const JsonObjectIterator& other) const {
@@ -62,7 +62,7 @@ class JsonObjectIterator {
   }
 
  private:
-  detail::MemoryPool* pool_;
+  detail::ResourceManager* resources_;
   detail::VariantSlot* slot_;
 };
 

src/ArduinoJson/Object/JsonPair.hpp

@@ -15,11 +15,11 @@ ARDUINOJSON_BEGIN_PUBLIC_NAMESPACE
 class JsonPair {
  public:
   // INTERNAL USE ONLY
-  JsonPair(detail::MemoryPool* pool, detail::VariantSlot* slot) {
+  JsonPair(detail::ResourceManager* resources, detail::VariantSlot* slot) {
     if (slot) {
       key_ = JsonString(slot->key(), slot->ownsKey() ? JsonString::Copied
                                                      : JsonString::Linked);
-      value_ = JsonVariant(pool, slot->data());
+      value_ = JsonVariant(resources, slot->data());
     }
   }
 

src/ArduinoJson/Object/MemberProxy.hpp

@@ -41,8 +41,8 @@ class MemberProxy
   }
 
  private:
-  FORCE_INLINE MemoryPool* getPool() const {
-    return VariantAttorney::getPool(upstream_);
+  FORCE_INLINE ResourceManager* getResourceManager() const {
+    return VariantAttorney::getResourceManager(upstream_);
   }
 
   FORCE_INLINE VariantData* getData() const {
@@ -51,9 +51,9 @@ class MemberProxy
   }
 
   FORCE_INLINE VariantData* getOrCreateData() const {
-    return variantGetOrAddMember(VariantAttorney::getOrCreateData(upstream_),
-                                 adaptString(key_),
-                                 VariantAttorney::getPool(upstream_));
+    return variantGetOrAddMember(
+        VariantAttorney::getOrCreateData(upstream_), adaptString(key_),
+        VariantAttorney::getResourceManager(upstream_));
   }
 
  private:

src/ArduinoJson/Variant/ConverterImpl.hpp

@@ -42,7 +42,7 @@ struct Converter<
     : private detail::VariantAttorney {
   static void toJson(T src, JsonVariant dst) {
     ARDUINOJSON_ASSERT_INTEGER_TYPE_IS_SUPPORTED(T);
-    variantSetInteger(getData(dst), src, getPool(dst));
+    variantSetInteger(getData(dst), src, getResourceManager(dst));
   }
 
   static T fromJson(JsonVariantConst src) {
@@ -78,7 +78,7 @@ struct Converter<T, typename detail::enable_if<detail::is_enum<T>::value>::type>
 template <>
 struct Converter<bool> : private detail::VariantAttorney {
   static void toJson(bool src, JsonVariant dst) {
-    variantSetBoolean(getData(dst), src, getPool(dst));
+    variantSetBoolean(getData(dst), src, getResourceManager(dst));
   }
 
   static bool fromJson(JsonVariantConst src) {
@@ -97,7 +97,8 @@ struct Converter<
     T, typename detail::enable_if<detail::is_floating_point<T>::value>::type>
     : private detail::VariantAttorney {
   static void toJson(T src, JsonVariant dst) {
-    variantSetFloat(getData(dst), static_cast<JsonFloat>(src), getPool(dst));
+    variantSetFloat(getData(dst), static_cast<JsonFloat>(src),
+                    getResourceManager(dst));
   }
 
   static T fromJson(JsonVariantConst src) {
@@ -114,7 +115,8 @@ struct Converter<
 template <>
 struct Converter<const char*> : private detail::VariantAttorney {
   static void toJson(const char* src, JsonVariant dst) {
-    variantSetString(getData(dst), detail::adaptString(src), getPool(dst));
+    variantSetString(getData(dst), detail::adaptString(src),
+                     getResourceManager(dst));
   }
 
   static const char* fromJson(JsonVariantConst src) {
@@ -131,7 +133,8 @@ struct Converter<const char*> : private detail::VariantAttorney {
 template <>
 struct Converter<JsonString> : private detail::VariantAttorney {
   static void toJson(JsonString src, JsonVariant dst) {
-    variantSetString(getData(dst), detail::adaptString(src), getPool(dst));
+    variantSetString(getData(dst), detail::adaptString(src),
+                     getResourceManager(dst));
   }
 
   static JsonString fromJson(JsonVariantConst src) {
@@ -150,8 +153,8 @@ inline typename detail::enable_if<detail::IsString<T>::value>::type
 convertToJson(const T& src, JsonVariant dst) {
   using namespace detail;
   auto data = VariantAttorney::getData(dst);
-  auto pool = VariantAttorney::getPool(dst);
-  variantSetString(data, adaptString(src), pool);
+  auto resources = VariantAttorney::getResourceManager(dst);
+  variantSetString(data, adaptString(src), resources);
 }
 
 // SerializedValue<std::string>
@@ -160,14 +163,14 @@ convertToJson(const T& src, JsonVariant dst) {
 template <typename T>
 struct Converter<SerializedValue<T>> : private detail::VariantAttorney {
   static void toJson(SerializedValue<T> src, JsonVariant dst) {
-    variantSetRawString(getData(dst), src, getPool(dst));
+    variantSetRawString(getData(dst), src, getResourceManager(dst));
   }
 };
 
 template <>
 struct Converter<decltype(nullptr)> : private detail::VariantAttorney {
   static void toJson(decltype(nullptr), JsonVariant dst) {
-    variantSetNull(getData(dst), getPool(dst));
+    variantSetNull(getData(dst), getResourceManager(dst));
   }
   static decltype(nullptr) fromJson(JsonVariantConst) {
     return nullptr;
@@ -181,9 +184,9 @@ struct Converter<decltype(nullptr)> : private detail::VariantAttorney {
 #if ARDUINOJSON_ENABLE_ARDUINO_STREAM
 
 namespace detail {
-class MemoryPoolPrint : public Print {
+class StringBuilderPrint : public Print {
  public:
-  MemoryPoolPrint(MemoryPool* pool) : copier_(pool) {
+  StringBuilderPrint(ResourceManager* resources) : copier_(resources) {
     copier_.startString();
   }
 
@@ -216,11 +219,11 @@ class MemoryPoolPrint : public Print {
 }  // namespace detail
 
 inline void convertToJson(const ::Printable& src, JsonVariant dst) {
-  auto pool = detail::VariantAttorney::getPool(dst);
+  auto resources = detail::VariantAttorney::getResourceManager(dst);
   auto data = detail::VariantAttorney::getData(dst);
-  if (!pool || !data)
+  if (!resources || !data)
     return;
-  detail::MemoryPoolPrint print(pool);
+  detail::StringBuilderPrint print(resources);
   src.printTo(print);
   if (print.overflowed()) {
     data->setNull();

src/ArduinoJson/Variant/JsonVariant.hpp

@@ -16,15 +16,15 @@ class JsonVariant : public detail::VariantRefBase<JsonVariant>,
 
  public:
   // Creates an unbound reference.
-  JsonVariant() : data_(0), pool_(0) {}
+  JsonVariant() : data_(0), resources_(0) {}
 
   // INTERNAL USE ONLY
-  JsonVariant(detail::MemoryPool* pool, detail::VariantData* data)
-      : data_(data), pool_(pool) {}
+  JsonVariant(detail::ResourceManager* resources, detail::VariantData* data)
+      : data_(data), resources_(resources) {}
 
  private:
-  FORCE_INLINE detail::MemoryPool* getPool() const {
-    return pool_;
+  FORCE_INLINE detail::ResourceManager* getResourceManager() const {
+    return resources_;
   }
 
   FORCE_INLINE detail::VariantData* getData() const {
@@ -36,13 +36,14 @@ class JsonVariant : public detail::VariantRefBase<JsonVariant>,
   }
 
   detail::VariantData* data_;
-  detail::MemoryPool* pool_;
+  detail::ResourceManager* resources_;
 };
 
 template <>
 struct Converter<JsonVariant> : private detail::VariantAttorney {
   static void toJson(JsonVariant src, JsonVariant dst) {
-    detail::variantCopyFrom(getData(dst), getData(src), getPool(dst));
+    detail::variantCopyFrom(getData(dst), getData(src),
+                            getResourceManager(dst));
   }
 
   static JsonVariant fromJson(JsonVariant src) {
@@ -65,7 +66,7 @@ struct Converter<JsonVariant> : private detail::VariantAttorney {
 template <>
 struct Converter<JsonVariantConst> : private detail::VariantAttorney {
   static void toJson(JsonVariantConst src, JsonVariant dst) {
-    variantCopyFrom(getData(dst), getData(src), getPool(dst));
+    variantCopyFrom(getData(dst), getData(src), getResourceManager(dst));
   }
 
   static JsonVariantConst fromJson(JsonVariantConst src) {
@@ -84,25 +85,26 @@ ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
 template <typename TDerived>
 inline JsonVariant VariantRefBase<TDerived>::add() const {
-  return JsonVariant(getPool(),
-                     variantAddElement(getOrCreateData(), getPool()));
+  return JsonVariant(
+      getResourceManager(),
+      variantAddElement(getOrCreateData(), getResourceManager()));
 }
 
 template <typename TDerived>
 inline JsonVariant VariantRefBase<TDerived>::getVariant() const {
-  return JsonVariant(getPool(), getData());
+  return JsonVariant(getResourceManager(), getData());
 }
 
 template <typename TDerived>
 inline JsonVariant VariantRefBase<TDerived>::getOrCreateVariant() const {
-  return JsonVariant(getPool(), getOrCreateData());
+  return JsonVariant(getResourceManager(), getOrCreateData());
 }
 
 template <typename TDerived>
 template <typename T>
 typename enable_if<is_same<T, JsonVariant>::value, JsonVariant>::type
 VariantRefBase<TDerived>::to() const {
-  variantSetNull(getOrCreateData(), getPool());
+  variantSetNull(getOrCreateData(), getResourceManager());
   return *this;
 }
 

src/ArduinoJson/Variant/JsonVariantConst.hpp

@@ -7,7 +7,7 @@
 #include <stddef.h>
 #include <stdint.h>  // for uint8_t
 
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
 #include <ArduinoJson/Strings/IsString.hpp>
 #include <ArduinoJson/Strings/StringAdapters.hpp>

src/ArduinoJson/Variant/SlotFunctions.hpp

@@ -18,11 +18,11 @@ inline size_t slotSize(const VariantSlot* var) {
   return n;
 }
 
-inline void slotRelease(VariantSlot* slot, MemoryPool* pool) {
+inline void slotRelease(VariantSlot* slot, ResourceManager* resources) {
   ARDUINOJSON_ASSERT(slot != nullptr);
   if (slot->ownsKey())
-    pool->dereferenceString(slot->key());
-  slot->data()->setNull(pool);
+    resources->dereferenceString(slot->key());
+  slot->data()->setNull(resources);
 }
 
 ARDUINOJSON_END_PRIVATE_NAMESPACE

src/ArduinoJson/Variant/VariantAttorney.hpp

@@ -30,8 +30,8 @@ class VariantAttorney {
 
  public:
   template <typename TClient>
-  FORCE_INLINE static MemoryPool* getPool(TClient& client) {
-    return client.getPool();
+  FORCE_INLINE static ResourceManager* getResourceManager(TClient& client) {
+    return client.getResourceManager();
   }
 
   template <typename TClient>

src/ArduinoJson/Variant/VariantData.hpp

@@ -14,14 +14,15 @@
 
 ARDUINOJSON_BEGIN_PRIVATE_NAMESPACE
 
-VariantData* collectionAddElement(CollectionData* array, MemoryPool* pool);
+VariantData* collectionAddElement(CollectionData* array,
+                                  ResourceManager* resources);
 bool collectionCopy(CollectionData* dst, const CollectionData* src,
-                    MemoryPool* pool);
+                    ResourceManager* resources);
 void collectionRemoveElement(CollectionData* data, size_t index,
-                             MemoryPool* pool);
+                             ResourceManager* resources);
 template <typename T>
 T parseNumber(const char* s);
-void slotRelease(VariantSlot* slot, MemoryPool* pool);
+void slotRelease(VariantSlot* slot, ResourceManager* resources);
 
 class VariantData {
   VariantContent content_;  // must be first to allow cast from array to variant
@@ -68,9 +69,9 @@ class VariantData {
     }
   }
 
-  VariantData* addElement(MemoryPool* pool) {
+  VariantData* addElement(ResourceManager* resources) {
     auto array = isNull() ? &toArray() : asArray();
-    return collectionAddElement(array, pool);
+    return collectionAddElement(array, resources);
   }
 
   bool asBoolean() const {
@@ -172,20 +173,20 @@ class VariantData {
     }
   }
 
-  bool copyFrom(const VariantData* src, MemoryPool* pool) {
-    release(pool);
+  bool copyFrom(const VariantData* src, ResourceManager* resources) {
+    release(resources);
     if (!src) {
       setNull();
       return true;
     }
     switch (src->type()) {
       case VALUE_IS_ARRAY:
-        return collectionCopy(&toArray(), src->asArray(), pool);
+        return collectionCopy(&toArray(), src->asArray(), resources);
       case VALUE_IS_OBJECT:
-        return collectionCopy(&toObject(), src->asObject(), pool);
+        return collectionCopy(&toObject(), src->asObject(), resources);
       case VALUE_IS_OWNED_STRING: {
         auto str = adaptString(src->asString());
-        auto dup = pool->saveString(str);
+        auto dup = resources->saveString(str);
         if (!dup)
           return false;
         setOwnedString(dup);
@@ -193,7 +194,7 @@ class VariantData {
       }
       case VALUE_IS_RAW_STRING: {
         auto str = adaptString(src->asRawString());
-        auto dup = pool->saveString(str);
+        auto dup = resources->saveString(str);
         if (!dup)
           return false;
         setRawString(dup);
@@ -221,7 +222,7 @@ class VariantData {
     return slotData(object->get(key));
   }
 
-  VariantData* getOrAddElement(size_t index, MemoryPool* pool) {
+  VariantData* getOrAddElement(size_t index, ResourceManager* resources) {
     auto array = isNull() ? &toArray() : asArray();
     if (!array)
       return nullptr;
@@ -233,7 +234,7 @@ class VariantData {
     if (!slot)
       index++;
     while (index > 0) {
-      slot = new (pool) VariantSlot();
+      slot = new (resources) VariantSlot();
       if (!slot)
         return nullptr;
       array->add(slot);
@@ -243,7 +244,7 @@ class VariantData {
   }
 
   template <typename TAdaptedString>
-  VariantData* getOrAddMember(TAdaptedString key, MemoryPool* pool) {
+  VariantData* getOrAddMember(TAdaptedString key, ResourceManager* resources) {
     if (key.isNull())
       return nullptr;
     auto obj = isNull() ? &toObject() : asObject();
@@ -252,7 +253,7 @@ class VariantData {
     auto slot = obj->get(key);
     if (slot)
       return slot->data();
-    return collectionAddMember(obj, key, pool);
+    return collectionAddMember(obj, key, resources);
   }
 
   bool isArray() const {
@@ -334,13 +335,13 @@ class VariantData {
     flags_ = uint8_t((flags_ & OWNED_KEY_BIT) | (src.flags_ & ~OWNED_KEY_BIT));
   }
 
-  void removeElement(size_t index, MemoryPool* pool) {
-    collectionRemoveElement(asArray(), index, pool);
+  void removeElement(size_t index, ResourceManager* resources) {
+    collectionRemoveElement(asArray(), index, resources);
   }
 
   template <typename TAdaptedString>
-  void removeMember(TAdaptedString key, MemoryPool* pool) {
-    collectionRemoveMember(asObject(), key, pool);
+  void removeMember(TAdaptedString key, ResourceManager* resources) {
+    collectionRemoveMember(asObject(), key, resources);
   }
 
   void reset() {
@@ -352,8 +353,8 @@ class VariantData {
     content_.asBoolean = value;
   }
 
-  void setBoolean(bool value, MemoryPool* pool) {
-    release(pool);
+  void setBoolean(bool value, ResourceManager* resources) {
+    release(resources);
     setBoolean(value);
   }
 
@@ -362,8 +363,8 @@ class VariantData {
     content_.asFloat = value;
   }
 
-  void setFloat(JsonFloat value, MemoryPool* pool) {
-    release(pool);
+  void setFloat(JsonFloat value, ResourceManager* resources) {
+    release(resources);
     setFloat(value);
   }
 
@@ -380,8 +381,8 @@ class VariantData {
   }
 
   template <typename T>
-  void setInteger(T value, MemoryPool* pool) {
-    release(pool);
+  void setInteger(T value, ResourceManager* resources) {
+    release(resources);
     setInteger(value);
   }
 
@@ -389,8 +390,8 @@ class VariantData {
     setType(VALUE_IS_NULL);
   }
 
-  void setNull(MemoryPool* pool) {
-    release(pool);
+  void setNull(ResourceManager* resources) {
+    release(resources);
     setNull();
   }
 
@@ -401,9 +402,9 @@ class VariantData {
   }
 
   template <typename T>
-  void setRawString(SerializedValue<T> value, MemoryPool* pool) {
-    release(pool);
-    auto dup = pool->saveString(adaptString(value.data(), value.size()));
+  void setRawString(SerializedValue<T> value, ResourceManager* resources) {
+    release(resources);
+    auto dup = resources->saveString(adaptString(value.data(), value.size()));
     if (dup)
       setRawString(dup);
     else
@@ -411,8 +412,8 @@ class VariantData {
   }
 
   template <typename TAdaptedString>
-  void setString(TAdaptedString value, MemoryPool* pool) {
-    setNull(pool);
+  void setString(TAdaptedString value, ResourceManager* resources) {
+    setNull(resources);
 
     if (value.isNull())
       return;
@@ -422,7 +423,7 @@ class VariantData {
       return;
     }
 
-    auto dup = pool->saveString(value);
+    auto dup = resources->saveString(value);
     if (dup)
       setOwnedString(dup);
   }
@@ -449,8 +450,8 @@ class VariantData {
     return content_.asCollection;
   }
 
-  CollectionData& toArray(MemoryPool* pool) {
-    release(pool);
+  CollectionData& toArray(ResourceManager* resources) {
+    release(resources);
     return toArray();
   }
 
@@ -460,8 +461,8 @@ class VariantData {
     return content_.asCollection;
   }
 
-  CollectionData& toObject(MemoryPool* pool) {
-    release(pool);
+  CollectionData& toObject(ResourceManager* resources) {
+    release(resources);
     return toObject();
   }
 
@@ -470,14 +471,14 @@ class VariantData {
   }
 
  private:
-  void release(MemoryPool* pool) {
+  void release(ResourceManager* resources) {
     if (flags_ & OWNED_VALUE_BIT)
-      pool->dereferenceString(content_.asOwnedString->data);
+      resources->dereferenceString(content_.asOwnedString->data);
 
     auto c = asCollection();
     if (c) {
       for (auto slot = c->head(); slot; slot = slot->next())
-        slotRelease(slot, pool);
+        slotRelease(slot, resources);
     }
   }
 
@@ -497,16 +498,17 @@ typename TVisitor::result_type variantAccept(const VariantData* var,
 }
 
 inline bool variantCopyFrom(VariantData* dst, const VariantData* src,
-                            MemoryPool* pool) {
+                            ResourceManager* resources) {
   if (!dst)
     return false;
-  return dst->copyFrom(src, pool);
+  return dst->copyFrom(src, resources);
 }
 
-inline VariantData* variantAddElement(VariantData* var, MemoryPool* pool) {
+inline VariantData* variantAddElement(VariantData* var,
+                                      ResourceManager* resources) {
   if (!var)
     return nullptr;
-  return var->addElement(pool);
+  return var->addElement(resources);
 }
 
 inline VariantData* variantGetElement(const VariantData* var, size_t index) {
@@ -521,18 +523,18 @@ VariantData* variantGetMember(const VariantData* var, TAdaptedString key) {
 }
 
 inline VariantData* variantGetOrAddElement(VariantData* var, size_t index,
-                                           MemoryPool* pool) {
+                                           ResourceManager* resources) {
   if (!var)
     return nullptr;
-  return var->getOrAddElement(index, pool);
+  return var->getOrAddElement(index, resources);
 }
 
 template <typename TAdaptedString>
 VariantData* variantGetOrAddMember(VariantData* var, TAdaptedString key,
-                                   MemoryPool* pool) {
+                                   ResourceManager* resources) {
   if (!var)
     return nullptr;
-  return var->getOrAddMember(key, pool);
+  return var->getOrAddMember(key, resources);
 }
 
 inline bool variantIsNull(const VariantData* var) {
@@ -548,76 +550,79 @@ inline size_t variantNesting(const VariantData* var) {
 }
 
 inline void variantRemoveElement(VariantData* var, size_t index,
-                                 MemoryPool* pool) {
+                                 ResourceManager* resources) {
   if (!var)
     return;
-  var->removeElement(index, pool);
+  var->removeElement(index, resources);
 }
 
 template <typename TAdaptedString>
 void variantRemoveMember(VariantData* var, TAdaptedString key,
-                         MemoryPool* pool) {
+                         ResourceManager* resources) {
   if (!var)
     return;
-  var->removeMember(key, pool);
+  var->removeMember(key, resources);
 }
 
-inline void variantSetBoolean(VariantData* var, bool value, MemoryPool* pool) {
+inline void variantSetBoolean(VariantData* var, bool value,
+                              ResourceManager* resources) {
   if (!var)
     return;
-  var->setBoolean(value, pool);
+  var->setBoolean(value, resources);
 }
 
 inline void variantSetFloat(VariantData* var, JsonFloat value,
-                            MemoryPool* pool) {
+                            ResourceManager* resources) {
   if (!var)
     return;
-  var->setFloat(value, pool);
+  var->setFloat(value, resources);
 }
 
 template <typename T>
-void variantSetInteger(VariantData* var, T value, MemoryPool* pool) {
+void variantSetInteger(VariantData* var, T value, ResourceManager* resources) {
   if (!var)
     return;
-  var->setInteger(value, pool);
+  var->setInteger(value, resources);
 }
 
-inline void variantSetNull(VariantData* var, MemoryPool* pool) {
+inline void variantSetNull(VariantData* var, ResourceManager* resources) {
   if (!var)
     return;
-  var->setNull(pool);
+  var->setNull(resources);
 }
 
 template <typename T>
 void variantSetRawString(VariantData* var, SerializedValue<T> value,
-                         MemoryPool* pool) {
+                         ResourceManager* resources) {
   if (!var)
     return;
-  var->setRawString(value, pool);
+  var->setRawString(value, resources);
 }
 
 template <typename TAdaptedString>
 void variantSetString(VariantData* var, TAdaptedString value,
-                      MemoryPool* pool) {
+                      ResourceManager* resources) {
   if (!var)
     return;
-  var->setString(value, pool);
+  var->setString(value, resources);
 }
 
 inline size_t variantSize(const VariantData* var) {
   return var != 0 ? var->size() : 0;
 }
 
-inline CollectionData* variantToArray(VariantData* var, MemoryPool* pool) {
+inline CollectionData* variantToArray(VariantData* var,
+                                      ResourceManager* resources) {
   if (!var)
     return 0;
-  return &var->toArray(pool);
+  return &var->toArray(resources);
 }
 
-inline CollectionData* variantToObject(VariantData* var, MemoryPool* pool) {
+inline CollectionData* variantToObject(VariantData* var,
+                                       ResourceManager* resources) {
   if (!var)
     return 0;
-  return &var->toObject(pool);
+  return &var->toObject(resources);
 }
 
 ARDUINOJSON_END_PRIVATE_NAMESPACE

src/ArduinoJson/Variant/VariantRefBase.hpp

@@ -30,7 +30,7 @@ class VariantRefBase : public VariantTag {
   // ⚠️ Doesn't release the memory associated with the previous value.
   // https://arduinojson.org/v6/api/jsonvariant/clear/
   FORCE_INLINE void clear() const {
-    variantSetNull(getOrCreateData(), getPool());
+    variantSetNull(getOrCreateData(), getResourceManager());
   }
 
   // Returns true if the value is null or the reference is unbound.
@@ -112,7 +112,7 @@ class VariantRefBase : public VariantTag {
     VariantData* data = getOrCreateData();
     if (!data)
       return;
-    variantSetNull(data, getPool());
+    variantSetNull(data, getResourceManager());
     const VariantData* targetData = VariantAttorney::getData(target);
     if (targetData)
       *data = *targetData;
@@ -123,8 +123,8 @@ class VariantRefBase : public VariantTag {
   template <typename T>
   FORCE_INLINE bool set(const T& value) const {
     Converter<T>::toJson(value, getOrCreateVariant());
-    MemoryPool* pool = getPool();
-    return pool && !pool->overflowed();
+    auto resources = getResourceManager();
+    return resources && !resources->overflowed();
   }
 
   // Copies the specified value.
@@ -132,8 +132,8 @@ class VariantRefBase : public VariantTag {
   template <typename T>
   FORCE_INLINE bool set(T* value) const {
     Converter<T*>::toJson(value, getOrCreateVariant());
-    MemoryPool* pool = getPool();
-    return pool && !pool->overflowed();
+    auto resources = getResourceManager();
+    return resources && !resources->overflowed();
   }
 
   // Returns the size of the array or object.
@@ -178,7 +178,7 @@ class VariantRefBase : public VariantTag {
   // ⚠️ Doesn't release the memory associated with the removed element.
   // https://arduinojson.org/v6/api/jsonvariant/remove/
   FORCE_INLINE void remove(size_t index) const {
-    variantRemoveElement(getData(), index, getPool());
+    variantRemoveElement(getData(), index, getResourceManager());
   }
 
   // Removes a member of the object.
@@ -187,7 +187,7 @@ class VariantRefBase : public VariantTag {
   template <typename TChar>
   FORCE_INLINE typename enable_if<IsString<TChar*>::value>::type remove(
       TChar* key) const {
-    variantRemoveMember(getData(), adaptString(key), getPool());
+    variantRemoveMember(getData(), adaptString(key), getResourceManager());
   }
 
   // Removes a member of the object.
@@ -196,7 +196,7 @@ class VariantRefBase : public VariantTag {
   template <typename TString>
   FORCE_INLINE typename enable_if<IsString<TString>::value>::type remove(
       const TString& key) const {
-    variantRemoveMember(getData(), adaptString(key), getPool());
+    variantRemoveMember(getData(), adaptString(key), getResourceManager());
   }
 
   // Creates an array and appends it to the array.
@@ -266,8 +266,8 @@ class VariantRefBase : public VariantTag {
     return static_cast<const TDerived&>(*this);
   }
 
-  FORCE_INLINE MemoryPool* getPool() const {
-    return VariantAttorney::getPool(derived());
+  FORCE_INLINE ResourceManager* getResourceManager() const {
+    return VariantAttorney::getResourceManager(derived());
   }
 
   FORCE_INLINE VariantData* getData() const {

src/ArduinoJson/Variant/VariantSlot.hpp

@@ -4,7 +4,7 @@
 
 #pragma once
 
-#include <ArduinoJson/Memory/MemoryPool.hpp>
+#include <ArduinoJson/Memory/ResourceManager.hpp>
 #include <ArduinoJson/Polyfills/integer.hpp>
 #include <ArduinoJson/Polyfills/limits.hpp>
 #include <ArduinoJson/Polyfills/type_traits.hpp>
@@ -26,11 +26,11 @@ class VariantSlot {
   const char* key_;
 
  public:
-  static void* operator new(size_t size, MemoryPool* pool) noexcept {
-    return pool->allocFromPool(size);
+  static void* operator new(size_t size, ResourceManager* resources) noexcept {
+    return resources->allocFromPool(size);
   }
 
-  static void operator delete(void*, MemoryPool*) noexcept {
+  static void operator delete(void*, ResourceManager*) noexcept {
     // we cannot release memory from the pool
   }