/*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#pragma once
#include <folly/Traits.h>
-#include <folly/portability/Memory.h>
#include <cstddef>
#include <cstdlib>
* @author Xu Ning (xning@fb.com)
*/
-#if __cplusplus >= 201402L || \
- defined __cpp_lib_make_unique && __cpp_lib_make_unique >= 201304L
+#if __cplusplus >= 201402L || __cpp_lib_make_unique >= 201304L || \
+ (__ANDROID__ && __cplusplus >= 201300L) || _MSC_VER >= 1900
/* using override */ using std::make_unique;
template <typename T, void(*f)(T*)>
struct static_function_deleter {
- void operator()(T* t) { f(t); }
+ void operator()(T* t) const {
+ f(t);
+ }
};
/**
*
* Useful when `T` is long, such as:
*
- * using T = foobar::cpp2::FooBarServiceAsyncClient;
+ * using T = foobar::FooBarAsyncClient;
*/
template <typename T, typename D>
std::shared_ptr<T> to_shared_ptr(std::unique_ptr<T, D>&& ptr) {
return std::shared_ptr<T>(std::move(ptr));
}
+/**
+ * to_weak_ptr
+ *
+ * Make a weak_ptr and return it from a shared_ptr without specifying the
+ * template type parameter and letting the compiler deduce it.
+ *
+ * So you can write this:
+ *
+ * auto wptr = to_weak_ptr(getSomethingShared<T>());
+ *
+ * Instead of this:
+ *
+ * auto wptr = weak_ptr<T>(getSomethingShared<T>());
+ *
+ * Useful when `T` is long, such as:
+ *
+ * using T = foobar::FooBarAsyncClient;
+ */
+template <typename T>
+std::weak_ptr<T> to_weak_ptr(const std::shared_ptr<T>& ptr) {
+ return std::weak_ptr<T>(ptr);
+}
+
+using SysBufferDeleter = static_function_deleter<void, ::free>;
+using SysBufferUniquePtr = std::unique_ptr<void, SysBufferDeleter>;
+inline SysBufferUniquePtr allocate_sys_buffer(size_t size) {
+ return SysBufferUniquePtr(::malloc(size));
+}
+
/**
* A SimpleAllocator must provide two methods:
*