123 lines
3.4 KiB
C++
123 lines
3.4 KiB
C++
// Copyright 2012 The Chromium Authors
|
|
// Use of this source code is governed by a BSD-style license that can be
|
|
// found in the LICENSE file.
|
|
|
|
#include "base/memory/ref_counted_memory.h"
|
|
|
|
#include <utility>
|
|
|
|
#include "base/check_op.h"
|
|
#include "base/memory/read_only_shared_memory_region.h"
|
|
|
|
namespace base {
|
|
|
|
bool RefCountedMemory::Equals(
|
|
const scoped_refptr<RefCountedMemory>& other) const {
|
|
return other.get() && size() == other->size() &&
|
|
(size() == 0 || (memcmp(front(), other->front(), size()) == 0));
|
|
}
|
|
|
|
RefCountedMemory::RefCountedMemory() = default;
|
|
|
|
RefCountedMemory::~RefCountedMemory() = default;
|
|
|
|
const unsigned char* RefCountedStaticMemory::front() const {
|
|
return data_;
|
|
}
|
|
|
|
size_t RefCountedStaticMemory::size() const {
|
|
return length_;
|
|
}
|
|
|
|
RefCountedStaticMemory::~RefCountedStaticMemory() = default;
|
|
|
|
RefCountedBytes::RefCountedBytes() = default;
|
|
|
|
RefCountedBytes::RefCountedBytes(const std::vector<unsigned char>& initializer)
|
|
: data_(initializer) {}
|
|
|
|
RefCountedBytes::RefCountedBytes(base::span<const unsigned char> initializer)
|
|
: data_(initializer.begin(), initializer.end()) {}
|
|
|
|
RefCountedBytes::RefCountedBytes(const unsigned char* p, size_t size)
|
|
: data_(p, p + size) {}
|
|
|
|
RefCountedBytes::RefCountedBytes(size_t size) : data_(size, 0) {}
|
|
|
|
scoped_refptr<RefCountedBytes> RefCountedBytes::TakeVector(
|
|
std::vector<unsigned char>* to_destroy) {
|
|
auto bytes = MakeRefCounted<RefCountedBytes>();
|
|
bytes->data_.swap(*to_destroy);
|
|
return bytes;
|
|
}
|
|
|
|
const unsigned char* RefCountedBytes::front() const {
|
|
// STL will assert if we do front() on an empty vector, but calling code
|
|
// expects a NULL.
|
|
return size() ? &data_.front() : nullptr;
|
|
}
|
|
|
|
size_t RefCountedBytes::size() const {
|
|
return data_.size();
|
|
}
|
|
|
|
RefCountedBytes::~RefCountedBytes() = default;
|
|
|
|
RefCountedString::RefCountedString() = default;
|
|
|
|
RefCountedString::~RefCountedString() = default;
|
|
|
|
RefCountedString::RefCountedString(std::string str) : data_(std::move(str)) {}
|
|
|
|
const unsigned char* RefCountedString::front() const {
|
|
return data_.empty() ? nullptr
|
|
: reinterpret_cast<const unsigned char*>(data_.data());
|
|
}
|
|
|
|
size_t RefCountedString::size() const {
|
|
return data_.size();
|
|
}
|
|
|
|
RefCountedString16::RefCountedString16() = default;
|
|
|
|
RefCountedString16::~RefCountedString16() = default;
|
|
|
|
RefCountedString16::RefCountedString16(std::u16string str)
|
|
: data_(std::move(str)) {}
|
|
|
|
const unsigned char* RefCountedString16::front() const {
|
|
return reinterpret_cast<const unsigned char*>(data_.data());
|
|
}
|
|
|
|
size_t RefCountedString16::size() const {
|
|
return data_.size() * sizeof(char16_t);
|
|
}
|
|
|
|
RefCountedSharedMemoryMapping::RefCountedSharedMemoryMapping(
|
|
ReadOnlySharedMemoryMapping mapping)
|
|
: mapping_(std::move(mapping)), size_(mapping_.size()) {
|
|
DCHECK_GT(size_, 0U);
|
|
}
|
|
|
|
RefCountedSharedMemoryMapping::~RefCountedSharedMemoryMapping() = default;
|
|
|
|
const unsigned char* RefCountedSharedMemoryMapping::front() const {
|
|
return static_cast<const unsigned char*>(mapping_.memory());
|
|
}
|
|
|
|
size_t RefCountedSharedMemoryMapping::size() const {
|
|
return size_;
|
|
}
|
|
|
|
// static
|
|
scoped_refptr<RefCountedSharedMemoryMapping>
|
|
RefCountedSharedMemoryMapping::CreateFromWholeRegion(
|
|
const ReadOnlySharedMemoryRegion& region) {
|
|
ReadOnlySharedMemoryMapping mapping = region.Map();
|
|
if (!mapping.IsValid())
|
|
return nullptr;
|
|
return MakeRefCounted<RefCountedSharedMemoryMapping>(std::move(mapping));
|
|
}
|
|
|
|
} // namespace base
|