359 lines
9.8 KiB
C++
359 lines
9.8 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file dtoolbase_cc.h
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* @author drose
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* @date 2000-09-13
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*/
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#ifndef DTOOLBASE_CC_H
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#define DTOOLBASE_CC_H
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// This file should never be included directly; it's intended to be included
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// only from dtoolbase.h. Include that file instead.
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#ifdef __cplusplus
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#ifdef USE_TAU
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// Tau provides this destructive version of stdbool.h that we must mask.
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#define __PDT_STDBOOL_H_
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#endif
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#ifdef CPPPARSER
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#include <iostream>
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#include <string>
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using namespace std;
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#define INLINE inline
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#define ALWAYS_INLINE inline
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#define TYPENAME typename
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#define CONSTEXPR constexpr
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#define ALWAYS_INLINE_CONSTEXPR constexpr
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#define NOEXCEPT noexcept
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#define FINAL final
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#define MOVE(x) x
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#define DEFAULT_CTOR = default
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#define DEFAULT_DTOR = default
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#define DEFAULT_ASSIGN = default
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#define DELETED = delete
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#define DELETED_ASSIGN = delete
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#define EXPORT_TEMPLATE_CLASS(expcl, exptp, classname)
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// We define the macro PUBLISHED to mark C++ methods that are to be published
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// via interrogate to scripting languages. However, if we're not running the
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// interrogate pass (CPPPARSER isn't defined), this maps to public.
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#define PUBLISHED __published
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typedef int ios_openmode;
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typedef int ios_fmtflags;
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typedef int ios_iostate;
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typedef int ios_seekdir;
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#else // CPPPARSER
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#ifdef PHAVE_IOSTREAM
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#include <iostream>
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#include <fstream>
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#include <iomanip>
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#else
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#include <iostream.h>
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#include <fstream.h>
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#include <iomanip.h>
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#endif
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#ifdef PHAVE_SSTREAM
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#include <sstream>
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#else
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#include "fakestringstream.h"
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#endif
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#ifdef PHAVE_NEW
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#include <new>
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#endif
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#include <string>
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#include <utility>
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#ifdef HAVE_NAMESPACE
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using namespace std;
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#endif
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#ifdef HAVE_TYPENAME
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#define TYPENAME typename
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#else
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#define TYPENAME
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#endif
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#ifndef HAVE_WCHAR_T
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// Some C++ libraries (os x 3.1) don't define this.
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typedef unsigned short wchar_t;
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#endif
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#ifndef HAVE_WSTRING
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// Some C++ libraries (gcc 2.95) don't define this.
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typedef basic_string<wchar_t> wstring;
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#endif
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#ifndef HAVE_STREAMSIZE
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// Some C++ libraries (Irix) don't define this.
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typedef long streamsize;
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#endif
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#ifndef HAVE_IOS_TYPEDEFS
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typedef int ios_openmode;
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typedef int ios_fmtflags;
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typedef int ios_iostate;
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// Old iostream libraries used ios::seek_dir instead of ios::seekdir.
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typedef ios::seek_dir ios_seekdir;
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#else
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typedef ios::openmode ios_openmode;
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typedef ios::fmtflags ios_fmtflags;
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typedef ios::iostate ios_iostate;
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typedef ios::seekdir ios_seekdir;
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#endif
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// Apple has an outdated libstdc++. Not all is lost, though, as we can fill
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// in some important missing functions.
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#if defined(__GLIBCXX__) && __GLIBCXX__ <= 20070719
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typedef decltype(nullptr) nullptr_t;
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template<class T> struct remove_reference {typedef T type;};
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template<class T> struct remove_reference<T&> {typedef T type;};
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template<class T> struct remove_reference<T&& >{typedef T type;};
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template<class T> typename remove_reference<T>::type &&move(T &&t) {
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return static_cast<typename remove_reference<T>::type&&>(t);
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}
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#endif
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#ifdef _MSC_VER
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#define ALWAYS_INLINE __forceinline
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#elif defined(__GNUC__)
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#define ALWAYS_INLINE __attribute__((always_inline)) inline
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#else
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#define ALWAYS_INLINE inline
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#endif
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#ifdef FORCE_INLINING
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// If FORCE_INLINING is defined, we use the keyword __forceinline, which tells
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// MS VC++ to override its internal benefit heuristic and inline the fn if it
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// is technically possible to do so.
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#define INLINE ALWAYS_INLINE
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#else
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#define INLINE inline
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#endif
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// Determine the availability of C++11 features.
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#if defined(__has_extension) // Clang magic.
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# if __has_extension(cxx_constexpr)
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# if !defined(__apple_build_version__) || __apple_build_version__ >= 5000000
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# define CONSTEXPR constexpr
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# endif
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# endif
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# if __has_extension(cxx_noexcept)
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# define NOEXCEPT noexcept
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# endif
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# if __has_extension(cxx_rvalue_references) && (__cplusplus >= 201103L)
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# define USE_MOVE_SEMANTICS
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# define MOVE(x) move(x)
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# endif
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# if __has_extension(cxx_override_control) && (__cplusplus >= 201103L)
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# define FINAL final
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# endif
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# if __has_extension(cxx_defaulted_functions)
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# define DEFAULT_CTOR = default
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# define DEFAULT_DTOR = default
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# define DEFAULT_ASSIGN = default
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# endif
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# if __has_extension(cxx_deleted_functions)
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# define DELETED = delete
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# endif
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#elif defined(__GNUC__) // GCC
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// Starting at GCC 4.4
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# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 4)
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# define DEFAULT_CTOR = default
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# define DEFAULT_DTOR = default
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# define DEFAULT_ASSIGN = default
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# define DELETED = delete
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# endif
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// Starting at GCC 4.6
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# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 6)
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# define CONSTEXPR constexpr
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# define NOEXCEPT noexcept
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# define USE_MOVE_SEMANTICS
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# define MOVE(x) move(x)
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# endif
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// Starting at GCC 4.7
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# if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 7)
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# define FINAL final
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# endif
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// GCC defines several macros which we can query. List of all supported
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// builtin macros: https://gcc.gnu.org/projects/cxx-status.html
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# if !defined(CONSTEXPR) && __cpp_constexpr >= 200704
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# define CONSTEXPR constexpr
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# endif
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#elif defined(_MSC_VER) && _MSC_VER >= 1900 // Visual Studio 2015
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# define CONSTEXPR constexpr
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# define NOEXCEPT noexcept
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# define USE_MOVE_SEMANTICS
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# define FINAL final
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# define MOVE(x) move(x)
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#elif defined(_MSC_VER) && _MSC_VER >= 1600 // Visual Studio 2010
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# define NOEXCEPT throw()
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# define USE_MOVE_SEMANTICS
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# define FINAL sealed
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# define MOVE(x) move(x)
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#endif
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#if defined(_MSC_VER) && _MSC_VER >= 1800 // Visual Studio 2013
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# define DEFAULT_CTOR = default
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# define DEFAULT_DTOR = default
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# define DEFAULT_ASSIGN = default
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# define DELETED = delete
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#endif
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// Fallbacks if features are not supported
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#ifndef CONSTEXPR
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# define CONSTEXPR INLINE
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# define ALWAYS_INLINE_CONSTEXPR ALWAYS_INLINE
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#else
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# define ALWAYS_INLINE_CONSTEXPR ALWAYS_INLINE CONSTEXPR
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#endif
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#ifndef NOEXCEPT
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# define NOEXCEPT
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#endif
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#ifndef MOVE
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# define MOVE(x) x
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#endif
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#ifndef FINAL
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# define FINAL
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#endif
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#ifndef DEFAULT_CTOR
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# define DEFAULT_CTOR {}
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#endif
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#ifndef DEFAULT_DTOR
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# define DEFAULT_DTOR {}
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#endif
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#ifndef DEFAULT_ASSIGN
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# define DEFAULT_ASSIGN {return *this;}
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#endif
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#ifndef DELETED
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# define DELETED {assert(false);}
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# define DELETED_ASSIGN {assert(false);return *this;}
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#else
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# define DELETED_ASSIGN DELETED
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#endif
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#if !defined(LINK_ALL_STATIC) && defined(EXPORT_TEMPLATES)
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// This macro must be used to export an instantiated template class from a
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// DLL. If the template class name itself contains commas, it may be
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// necessary to first define a macro for the class name, to allow proper macro
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// parameter passing.
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#define EXPORT_TEMPLATE_CLASS(expcl, exptp, classname) \
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exptp template class expcl classname;
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#else
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#define EXPORT_TEMPLATE_CLASS(expcl, exptp, classname)
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#endif
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// We define the macro PUBLISHED to mark C++ methods that are to be published
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// via interrogate to scripting languages. However, if we're not running the
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// interrogate pass (CPPPARSER isn't defined), this maps to public.
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#define PUBLISHED public
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#endif // CPPPARSER
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// The ReferenceCount class is defined later, within Panda, but we need to
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// pass around forward references to it here at the very low level.
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class ReferenceCount;
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// We need a pointer to a global MemoryHook object, to manage all malloc and
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// free requests from Panda. See the comments in MemoryHook itself.
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class MemoryHook;
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EXPCL_DTOOL extern MemoryHook *memory_hook;
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EXPCL_DTOOL void init_memory_hook();
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// Now redefine some handy macros to hook into the above MemoryHook object.
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#ifndef USE_MEMORY_NOWRAPPERS
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#define PANDA_MALLOC_SINGLE(size) (ASSUME_ALIGNED(memory_hook->heap_alloc_single(size), MEMORY_HOOK_ALIGNMENT))
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#define PANDA_FREE_SINGLE(ptr) memory_hook->heap_free_single(ptr)
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#define PANDA_MALLOC_ARRAY(size) (ASSUME_ALIGNED(memory_hook->heap_alloc_array(size), MEMORY_HOOK_ALIGNMENT))
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#define PANDA_REALLOC_ARRAY(ptr, size) (ASSUME_ALIGNED(memory_hook->heap_realloc_array(ptr, size), MEMORY_HOOK_ALIGNMENT))
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#define PANDA_FREE_ARRAY(ptr) memory_hook->heap_free_array(ptr)
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#else
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#define PANDA_MALLOC_SINGLE(size) ::malloc(size)
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#define PANDA_FREE_SINGLE(ptr) ::free(ptr)
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#define PANDA_MALLOC_ARRAY(size) ::malloc(size)
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#define PANDA_REALLOC_ARRAY(ptr, size) ::realloc(ptr, size)
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#define PANDA_FREE_ARRAY(ptr) ::free(ptr)
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#endif // USE_MEMORY_NOWRAPPERS
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#if defined(HAVE_THREADS) && defined(SIMPLE_THREADS)
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// We need another forward-reference function to allow low-level code to
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// cooperatively yield the timeslice, in SIMPLE_THREADS mode.
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extern EXPCL_DTOOL void (*global_thread_yield)();
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extern EXPCL_DTOOL void (*global_thread_consider_yield)();
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INLINE void thread_yield() {
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(*global_thread_yield)();
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}
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INLINE void thread_consider_yield() {
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(*global_thread_consider_yield)();
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}
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#else
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INLINE void thread_yield() {
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}
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INLINE void thread_consider_yield() {
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}
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#endif // HAVE_THREADS && SIMPLE_THREADS
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#if defined(USE_TAU) && defined(WIN32)
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// Hack around tau's lack of DLL export declarations for Profiler class.
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extern EXPCL_DTOOL bool __tau_shutdown;
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class EXPCL_DTOOL TauProfile {
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public:
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TauProfile(void *&tautimer, char *name, char *type, int group, char *group_name) {
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Tau_profile_c_timer(&tautimer, name, type, group, group_name);
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_tautimer = tautimer;
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TAU_PROFILE_START(_tautimer);
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}
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~TauProfile() {
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if (!__tau_shutdown) {
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TAU_PROFILE_STOP(_tautimer);
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}
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}
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private:
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void *_tautimer;
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};
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#undef TAU_PROFILE
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#define TAU_PROFILE(name, type, group) \
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static void *__tautimer; \
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TauProfile __taupr(__tautimer, name, type, group, #group)
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#undef TAU_PROFILE_EXIT
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#define TAU_PROFILE_EXIT(msg) \
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__tau_shutdown = true; \
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Tau_exit(msg);
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#endif // USE_TAU
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#endif // __cplusplus
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#endif
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