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files >> //opt/hc_python/lib64/python3.8/site-packages/greenlet/greenlet_allocator.hpp
#ifndef GREENLET_ALLOCATOR_HPP #define GREENLET_ALLOCATOR_HPP #define PY_SSIZE_T_CLEAN #include <Python.h> #include <memory> #include "greenlet_compiler_compat.hpp" namespace greenlet { // This allocator is stateless; all instances are identical. // It can *ONLY* be used when we're sure we're holding the GIL // (Python's allocators require the GIL). template <class T> struct PythonAllocator : public std::allocator<T> { PythonAllocator(const PythonAllocator& UNUSED(other)) : std::allocator<T>() { } PythonAllocator(const std::allocator<T> other) : std::allocator<T>(other) {} template <class U> PythonAllocator(const std::allocator<U>& other) : std::allocator<T>(other) { } PythonAllocator() : std::allocator<T>() {} T* allocate(size_t number_objects, const void* UNUSED(hint)=0) { void* p; if (number_objects == 1) p = PyObject_Malloc(sizeof(T)); else p = PyMem_Malloc(sizeof(T) * number_objects); return static_cast<T*>(p); } void deallocate(T* t, size_t n) { void* p = t; if (n == 1) { PyObject_Free(p); } else PyMem_Free(p); } // This member is deprecated in C++17 and removed in C++20 template< class U > struct rebind { typedef PythonAllocator<U> other; }; }; } #endif
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