diff options
Diffstat (limited to 'src/exception.cpp')
| -rw-r--r-- | src/exception.cpp | 327 |
1 files changed, 15 insertions, 312 deletions
diff --git a/src/exception.cpp b/src/exception.cpp index f25041d83427..0b502cd134c0 100644 --- a/src/exception.cpp +++ b/src/exception.cpp @@ -6,328 +6,31 @@ // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// -#include <stdlib.h> -#include <stdio.h> #include "exception" #include "new" +#include "typeinfo" -#if defined(_LIBCPP_ABI_MICROSOFT) -#include <eh.h> -#include <corecrt_terminate.h> -#elif defined(__APPLE__) && !defined(LIBCXXRT) && \ - !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) +#if defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI) || \ + (defined(__APPLE__) && !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY)) #include <cxxabi.h> - using namespace __cxxabiv1; #define HAVE_DEPENDENT_EH_ABI 1 - #ifndef _LIBCPPABI_VERSION - using namespace __cxxabiapple; - // On Darwin, there are two STL shared libraries and a lower level ABI - // shared library. The globals holding the current terminate handler and - // current unexpected handler are in the ABI library. - #define __terminate_handler __cxxabiapple::__cxa_terminate_handler - #define __unexpected_handler __cxxabiapple::__cxa_unexpected_handler - #endif // _LIBCPPABI_VERSION -#elif defined(LIBCXXRT) || defined(LIBCXX_BUILDING_LIBCXXABI) - #include <cxxabi.h> - using namespace __cxxabiv1; - #if defined(LIBCXXRT) || defined(_LIBCPPABI_VERSION) - #define HAVE_DEPENDENT_EH_ABI 1 - #endif -#elif !defined(__GLIBCXX__) // defined(LIBCXX_BUILDING_LIBCXXABI) - _LIBCPP_SAFE_STATIC static std::terminate_handler __terminate_handler; - _LIBCPP_SAFE_STATIC static std::unexpected_handler __unexpected_handler; -#endif // defined(LIBCXX_BUILDING_LIBCXXABI) - -namespace std -{ - -#if !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION) && !defined(__GLIBCXX__) - -// libcxxrt provides implementations of these functions itself. -unexpected_handler -set_unexpected(unexpected_handler func) _NOEXCEPT -{ -#if defined(_LIBCPP_ABI_MICROSOFT) - return ::set_unexpected(func); -#else - return __sync_lock_test_and_set(&__unexpected_handler, func); -#endif -} - -unexpected_handler -get_unexpected() _NOEXCEPT -{ -#if defined(_LIBCPP_ABI_MICROSOFT) - return ::_get_unexpected(); -#else - return __sync_fetch_and_add(&__unexpected_handler, (unexpected_handler)0); -#endif -} - -_LIBCPP_NORETURN -void -unexpected() -{ - (*get_unexpected())(); - // unexpected handler should not return - terminate(); -} - -terminate_handler -set_terminate(terminate_handler func) _NOEXCEPT -{ -#if defined(_LIBCPP_ABI_MICROSOFT) - return ::set_terminate(func); -#else - return __sync_lock_test_and_set(&__terminate_handler, func); #endif -} -terminate_handler -get_terminate() _NOEXCEPT -{ #if defined(_LIBCPP_ABI_MICROSOFT) - return ::_get_terminate(); -#else - return __sync_fetch_and_add(&__terminate_handler, (terminate_handler)0); -#endif -} - -#ifndef __EMSCRIPTEN__ // We provide this in JS -_LIBCPP_NORETURN -void -terminate() _NOEXCEPT -{ -#ifndef _LIBCPP_NO_EXCEPTIONS - try - { -#endif // _LIBCPP_NO_EXCEPTIONS - (*get_terminate())(); - // handler should not return - fprintf(stderr, "terminate_handler unexpectedly returned\n"); - ::abort(); -#ifndef _LIBCPP_NO_EXCEPTIONS - } - catch (...) - { - // handler should not throw exception - fprintf(stderr, "terminate_handler unexpectedly threw an exception\n"); - ::abort(); - } -#endif // _LIBCPP_NO_EXCEPTIONS -} -#endif // !__EMSCRIPTEN__ -#endif // !defined(LIBCXXRT) && !defined(_LIBCPPABI_VERSION) - -#if !defined(LIBCXXRT) && !defined(__GLIBCXX__) && !defined(__EMSCRIPTEN__) - -bool uncaught_exception() _NOEXCEPT { return uncaught_exceptions() > 0; } - -int uncaught_exceptions() _NOEXCEPT -{ -#if !defined(_LIBCPP_BUILDING_HAS_NO_ABI_LIBRARY) && \ - (defined(__APPLE__) || defined(_LIBCPPABI_VERSION)) - // on Darwin, there is a helper function so __cxa_get_globals is private -# if _LIBCPPABI_VERSION > 1101 - return __cxa_uncaught_exceptions(); -# else - return __cxa_uncaught_exception() ? 1 : 0; -# endif -#elif defined(_LIBCPP_ABI_MICROSOFT) - return __uncaught_exceptions(); -#else -# if defined(_MSC_VER) && ! defined(__clang__) - _LIBCPP_WARNING("uncaught_exceptions not yet implemented") -# else -# warning uncaught_exception not yet implemented -# endif - fprintf(stderr, "uncaught_exceptions not yet implemented\n"); - ::abort(); -#endif // __APPLE__ -} - - -#ifndef _LIBCPPABI_VERSION - -exception::~exception() _NOEXCEPT -{ -} - -const char* exception::what() const _NOEXCEPT -{ - return "std::exception"; -} - -#endif // _LIBCPPABI_VERSION -#endif //LIBCXXRT -#if !defined(_LIBCPPABI_VERSION) && !defined(__GLIBCXX__) - -bad_exception::~bad_exception() _NOEXCEPT -{ -} - -const char* bad_exception::what() const _NOEXCEPT -{ - return "std::bad_exception"; -} - -#endif - -#if defined(__GLIBCXX__) - -// libsupc++ does not implement the dependent EH ABI and the functionality -// it uses to implement std::exception_ptr (which it declares as an alias of -// std::__exception_ptr::exception_ptr) is not directly exported to clients. So -// we have little choice but to hijack std::__exception_ptr::exception_ptr's -// (which fortunately has the same layout as our std::exception_ptr) copy -// constructor, assignment operator and destructor (which are part of its -// stable ABI), and its rethrow_exception(std::__exception_ptr::exception_ptr) -// function. - -namespace __exception_ptr -{ - -struct exception_ptr -{ - void* __ptr_; - - exception_ptr(const exception_ptr&) _NOEXCEPT; - exception_ptr& operator=(const exception_ptr&) _NOEXCEPT; - ~exception_ptr() _NOEXCEPT; -}; - -} - -_LIBCPP_NORETURN void rethrow_exception(__exception_ptr::exception_ptr); - -#endif - -exception_ptr::~exception_ptr() _NOEXCEPT -{ -#if HAVE_DEPENDENT_EH_ABI - __cxa_decrement_exception_refcount(__ptr_); -#elif defined(__GLIBCXX__) - reinterpret_cast<__exception_ptr::exception_ptr*>(this)->~exception_ptr(); -#else -# if defined(_MSC_VER) && ! defined(__clang__) - _LIBCPP_WARNING("exception_ptr not yet implemented") -# else -# warning exception_ptr not yet implemented -# endif - fprintf(stderr, "exception_ptr not yet implemented\n"); - ::abort(); -#endif -} - -exception_ptr::exception_ptr(const exception_ptr& other) _NOEXCEPT - : __ptr_(other.__ptr_) -{ -#if HAVE_DEPENDENT_EH_ABI - __cxa_increment_exception_refcount(__ptr_); -#elif defined(__GLIBCXX__) - new (reinterpret_cast<void*>(this)) __exception_ptr::exception_ptr( - reinterpret_cast<const __exception_ptr::exception_ptr&>(other)); -#else -# if defined(_MSC_VER) && ! defined(__clang__) - _LIBCPP_WARNING("exception_ptr not yet implemented") -# else -# warning exception_ptr not yet implemented -# endif - fprintf(stderr, "exception_ptr not yet implemented\n"); - ::abort(); -#endif -} - -exception_ptr& exception_ptr::operator=(const exception_ptr& other) _NOEXCEPT -{ -#if HAVE_DEPENDENT_EH_ABI - if (__ptr_ != other.__ptr_) - { - __cxa_increment_exception_refcount(other.__ptr_); - __cxa_decrement_exception_refcount(__ptr_); - __ptr_ = other.__ptr_; - } - return *this; -#elif defined(__GLIBCXX__) - *reinterpret_cast<__exception_ptr::exception_ptr*>(this) = - reinterpret_cast<const __exception_ptr::exception_ptr&>(other); - return *this; -#else -# if defined(_MSC_VER) && ! defined(__clang__) - _LIBCPP_WARNING("exception_ptr not yet implemented") -# else -# warning exception_ptr not yet implemented -# endif - fprintf(stderr, "exception_ptr not yet implemented\n"); - ::abort(); -#endif -} - -nested_exception::nested_exception() _NOEXCEPT - : __ptr_(current_exception()) -{ -} - -#if !defined(__GLIBCXX__) - -nested_exception::~nested_exception() _NOEXCEPT -{ -} - -#endif - -_LIBCPP_NORETURN -void -nested_exception::rethrow_nested() const -{ - if (__ptr_ == nullptr) - terminate(); - rethrow_exception(__ptr_); -} - -#if !defined(__GLIBCXX__) - -exception_ptr current_exception() _NOEXCEPT -{ -#if HAVE_DEPENDENT_EH_ABI - // be nicer if there was a constructor that took a ptr, then - // this whole function would be just: - // return exception_ptr(__cxa_current_primary_exception()); - exception_ptr ptr; - ptr.__ptr_ = __cxa_current_primary_exception(); - return ptr; -#else -# if defined(_MSC_VER) && ! defined(__clang__) - _LIBCPP_WARNING( "exception_ptr not yet implemented" ) -# else -# warning exception_ptr not yet implemented -# endif - fprintf(stderr, "exception_ptr not yet implemented\n"); - ::abort(); -#endif -} - -#endif // !__GLIBCXX__ - -_LIBCPP_NORETURN -void rethrow_exception(exception_ptr p) -{ -#if HAVE_DEPENDENT_EH_ABI - __cxa_rethrow_primary_exception(p.__ptr_); - // if p.__ptr_ is NULL, above returns so we terminate - terminate(); +#include "support/runtime/exception_msvc.ipp" +#include "support/runtime/exception_pointer_unimplemented.ipp" +#elif defined(_LIBCPPABI_VERSION) +#include "support/runtime/exception_libcxxabi.ipp" +#include "support/runtime/exception_pointer_cxxabi.ipp" +#elif defined(LIBCXXRT) +#include "support/runtime/exception_libcxxrt.ipp" +#include "support/runtime/exception_pointer_cxxabi.ipp" #elif defined(__GLIBCXX__) - rethrow_exception(reinterpret_cast<__exception_ptr::exception_ptr&>(p)); +#include "support/runtime/exception_glibcxx.ipp" +#include "support/runtime/exception_pointer_glibcxx.ipp" #else -# if defined(_MSC_VER) && ! defined(__clang__) - _LIBCPP_WARNING("exception_ptr not yet implemented") -# else -# warning exception_ptr not yet implemented -# endif - fprintf(stderr, "exception_ptr not yet implemented\n"); - ::abort(); +#include "support/runtime/exception_fallback.ipp" +#include "support/runtime/exception_pointer_unimplemented.ipp" #endif -} -} // std |