问为什么'std::make_shared‘总是使用全局内存分配，即使类重载了新/删除运算符？EN之所以这样做，是...
#0 0x00005598515613c7 in std::type_info::operator== (this=0x7fe8f20aa950 <std::_Sp_make_shared_tag::_S_ti()::__tag>, __arg=...) at /usr/include/c++/8.2.1/typeinfo:123 123 || (__name[0] != '*' && [Current thread is 1 (Thread 0x7fe8ecaef700 (LWP 5994))] (gdb)...
std::unique_ptr<InstrumentedIOContextWithThread> io_context = std::make_unique<InstrumentedIOContextWithThread>( "DefaultCoreWorkerMemoryStoreWithThread"); // C++ limitation: std::make_unique cannot be used because std::unique_ptr cannot // invoke private constructors. return std::unique_...
为了使指针泄漏，另一个线程将不得不破坏正在运行std::make_shared的线程中的堆栈，这是不可能的，除非...
make_shared为构造动作提供了更加简明的表达。由于它将shared_ptr的计数置于对象之后,使用它还可以提供减少另外一次的增加计数的机会。 Example(示例) 代码语言:javascript 代码运行次数:0 voidtest(){// OK: but repetitive; and separate allocations for the Bar and shared_ptr's use countshared_ptr<Bar>p{...
class Widget :public std::enable_shared_from_this<Widget> { private: struct secret { explicit secret() = default; }; public: template<typename...Args> static auto Create(Args&&... args) { return std::make_shared<Widget> (secret{}, std::forward<Args>(args)...); } ...
allocated by thread T0 here: #0 0x561aa17a0c6d in operator new(unsigned long) /root/llvm-project/compiler-rt/lib/asan/asan_new_delete.cpp:95:3 #1 0x561aa17a3af4 in void* std::__1::__libcpp_operator_new[abi:v180000]<unsigned long>(unsigned long) /opt/compiler-explorer/clang-tru...
sample.cpp(643): message : see reference to function template instantiation 'std::shared_ptr<WidgetManager> std::make_shared<WidgetManager,>(void)' being compiled If the customer had turned on the_DEBUGsymbol in their debug build, they would have found this problem much sooner. ...
std::atomic<int> a; void thread_func() { a += 1; } // correct: no data-raceThe following always happens on x86_64 CPU (step by step):std::atomic<int> a = 0; // register1 = ?, register2 = ?, a = 0 Thread 1: register1 = a; // register1 = 0, register2 = ?, a...
问我可以在使用std::make_shared后缓存吗？ENPython 是一种广泛使用的编程语言，以其简单、多功能和...