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author | Riccardo Spagni <ric@spagni.net> | 2015-12-30 12:28:03 +0200 |
---|---|---|
committer | Riccardo Spagni <ric@spagni.net> | 2015-12-30 12:28:03 +0200 |
commit | 7223eebbe71833e895fca95267cb243834dedf83 (patch) | |
tree | a5d48783316ff837e353c51a29b54f5324dd0bb1 /external/rapidjson/allocators.h | |
parent | Merge pull request #575 (diff) | |
parent | no longer need to pass the size to rapidjson (diff) | |
download | monero-7223eebbe71833e895fca95267cb243834dedf83.tar.xz |
Merge pull request #577
32a2633 no longer need to pass the size to rapidjson (Riccardo Spagni)
bd8e0fd add missing miniupnpc files, modify cmake to not build miniupnpc tests and to fix an issue with finding miniupnpcstrings (Riccardo Spagni)
7da9905 updated miniupnpc (Riccardo Spagni)
Diffstat (limited to 'external/rapidjson/allocators.h')
-rw-r--r-- | external/rapidjson/allocators.h | 73 |
1 files changed, 44 insertions, 29 deletions
diff --git a/external/rapidjson/allocators.h b/external/rapidjson/allocators.h index c99485e50..05e3b0cea 100644 --- a/external/rapidjson/allocators.h +++ b/external/rapidjson/allocators.h @@ -1,29 +1,23 @@ -// Copyright (C) 2011 Milo Yip
+// Tencent is pleased to support the open source community by making RapidJSON available.
+//
+// Copyright (C) 2015 THL A29 Limited, a Tencent company, and Milo Yip. All rights reserved.
//
-// Permission is hereby granted, free of charge, to any person obtaining a copy
-// of this software and associated documentation files (the "Software"), to deal
-// in the Software without restriction, including without limitation the rights
-// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-// copies of the Software, and to permit persons to whom the Software is
-// furnished to do so, subject to the following conditions:
+// Licensed under the MIT License (the "License"); you may not use this file except
+// in compliance with the License. You may obtain a copy of the License at
//
-// The above copyright notice and this permission notice shall be included in
-// all copies or substantial portions of the Software.
+// http://opensource.org/licenses/MIT
//
-// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-// THE SOFTWARE.
+// Unless required by applicable law or agreed to in writing, software distributed
+// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+// CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
#ifndef RAPIDJSON_ALLOCATORS_H_
#define RAPIDJSON_ALLOCATORS_H_
#include "rapidjson.h"
-namespace rapidjson {
+RAPIDJSON_NAMESPACE_BEGIN
///////////////////////////////////////////////////////////////////////////////
// Allocator
@@ -68,8 +62,20 @@ concept Allocator { class CrtAllocator {
public:
static const bool kNeedFree = true;
- void* Malloc(size_t size) { return std::malloc(size); }
- void* Realloc(void* originalPtr, size_t originalSize, size_t newSize) { (void)originalSize; return std::realloc(originalPtr, newSize); }
+ void* Malloc(size_t size) {
+ if (size) // behavior of malloc(0) is implementation defined.
+ return std::malloc(size);
+ else
+ return NULL; // standardize to returning NULL.
+ }
+ void* Realloc(void* originalPtr, size_t originalSize, size_t newSize) {
+ (void)originalSize;
+ if (newSize == 0) {
+ std::free(originalPtr);
+ return NULL;
+ }
+ return std::realloc(originalPtr, newSize);
+ }
static void Free(void *ptr) { std::free(ptr); }
};
@@ -104,9 +110,6 @@ public: MemoryPoolAllocator(size_t chunkSize = kDefaultChunkCapacity, BaseAllocator* baseAllocator = 0) :
chunkHead_(0), chunk_capacity_(chunkSize), userBuffer_(0), baseAllocator_(baseAllocator), ownBaseAllocator_(0)
{
- if (!baseAllocator_)
- ownBaseAllocator_ = baseAllocator_ = new BaseAllocator();
- AddChunk(chunk_capacity_);
}
//! Constructor with user-supplied buffer.
@@ -135,16 +138,18 @@ public: */
~MemoryPoolAllocator() {
Clear();
- delete ownBaseAllocator_;
+ RAPIDJSON_DELETE(ownBaseAllocator_);
}
//! Deallocates all memory chunks, excluding the user-supplied buffer.
void Clear() {
- while(chunkHead_ != 0 && chunkHead_ != userBuffer_) {
+ while (chunkHead_ && chunkHead_ != userBuffer_) {
ChunkHeader* next = chunkHead_->next;
baseAllocator_->Free(chunkHead_);
chunkHead_ = next;
}
+ if (chunkHead_ && chunkHead_ == userBuffer_)
+ chunkHead_->size = 0; // Clear user buffer
}
//! Computes the total capacity of allocated memory chunks.
@@ -169,11 +174,14 @@ public: //! Allocates a memory block. (concept Allocator)
void* Malloc(size_t size) {
+ if (!size)
+ return NULL;
+
size = RAPIDJSON_ALIGN(size);
if (chunkHead_ == 0 || chunkHead_->size + size > chunkHead_->capacity)
AddChunk(chunk_capacity_ > size ? chunk_capacity_ : size);
- void *buffer = reinterpret_cast<char *>(chunkHead_ + 1) + chunkHead_->size;
+ void *buffer = reinterpret_cast<char *>(chunkHead_) + RAPIDJSON_ALIGN(sizeof(ChunkHeader)) + chunkHead_->size;
chunkHead_->size += size;
return buffer;
}
@@ -183,12 +191,15 @@ public: if (originalPtr == 0)
return Malloc(newSize);
+ if (newSize == 0)
+ return NULL;
+
// Do not shrink if new size is smaller than original
if (originalSize >= newSize)
return originalPtr;
// Simply expand it if it is the last allocation and there is sufficient space
- if (originalPtr == (char *)(chunkHead_ + 1) + chunkHead_->size - originalSize) {
+ if (originalPtr == reinterpret_cast<char *>(chunkHead_) + RAPIDJSON_ALIGN(sizeof(ChunkHeader)) + chunkHead_->size - originalSize) {
size_t increment = static_cast<size_t>(newSize - originalSize);
increment = RAPIDJSON_ALIGN(increment);
if (chunkHead_->size + increment <= chunkHead_->capacity) {
@@ -200,7 +211,9 @@ public: // Realloc process: allocate and copy memory, do not free original buffer.
void* newBuffer = Malloc(newSize);
RAPIDJSON_ASSERT(newBuffer != 0); // Do not handle out-of-memory explicitly.
- return std::memcpy(newBuffer, originalPtr, originalSize);
+ if (originalSize)
+ std::memcpy(newBuffer, originalPtr, originalSize);
+ return newBuffer;
}
//! Frees a memory block (concept Allocator)
@@ -216,7 +229,9 @@ private: /*! \param capacity Capacity of the chunk in bytes.
*/
void AddChunk(size_t capacity) {
- ChunkHeader* chunk = reinterpret_cast<ChunkHeader*>(baseAllocator_->Malloc(sizeof(ChunkHeader) + capacity));
+ if (!baseAllocator_)
+ ownBaseAllocator_ = baseAllocator_ = RAPIDJSON_NEW(BaseAllocator());
+ ChunkHeader* chunk = reinterpret_cast<ChunkHeader*>(baseAllocator_->Malloc(RAPIDJSON_ALIGN(sizeof(ChunkHeader)) + capacity));
chunk->capacity = capacity;
chunk->size = 0;
chunk->next = chunkHead_;
@@ -241,6 +256,6 @@ private: BaseAllocator* ownBaseAllocator_; //!< base allocator created by this object.
};
-} // namespace rapidjson
+RAPIDJSON_NAMESPACE_END
#endif // RAPIDJSON_ENCODINGS_H_
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