diff options
| author | Howard Hinnant <hhinnant@apple.com> | 2012-01-12 21:06:12 +0000 |
|---|---|---|
| committer | Howard Hinnant <hhinnant@apple.com> | 2012-01-12 21:06:12 +0000 |
| commit | 9a1aad5a7ffe86b7d30157e72cd5a51d2a4f1649 (patch) | |
| tree | e378d5dabd0cd9572057ddc830bb302764a5123c /src/private_typeinfo.cpp | |
| parent | 185dc7d61ff4e58909f043f3a0c0d7d1d87ba7da (diff) | |
Put debug print statments under a flag so that I can get a first glimpse at performance. So far I haven't noticed any performance difference between this new __dynamic_cast and gcc's implementation. But I've barely started looking. Also adding a couple of tests which come straight out of the standard.
git-svn-id: https://llvm.org/svn/llvm-project/libcxxabi/trunk@148046 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'src/private_typeinfo.cpp')
| -rw-r--r-- | src/private_typeinfo.cpp | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/src/private_typeinfo.cpp b/src/private_typeinfo.cpp index 4f0b5bb..7b3ab5b 100644 --- a/src/private_typeinfo.cpp +++ b/src/private_typeinfo.cpp @@ -9,9 +9,10 @@ #include "private_typeinfo.h" +#ifdef DEBUG // temporary headers #include <iostream> -#include <cassert> +#endif namespace std { @@ -156,11 +157,13 @@ __class_type_info::search2(__dynamic_cast_info* info, const void* dynamic_ptr, return 1; } +#ifdef DEBUG void __class_type_info::display(const void* obj) const { std::cout << "\n__class_type_info::this = " << obj << " " << name() << '\n'; } +#endif // __si_class_type_info @@ -238,12 +241,14 @@ __si_class_type_info::search2(__dynamic_cast_info* info, const void* dynamic_ptr return __base_type->search2(info, dynamic_ptr, path_below); } +#ifdef DEBUG void __si_class_type_info::display(const void* obj) const { std::cout << "\n__si_class_type_info::this = " << obj << " " << name() << '\n'; __base_type->display(obj); } +#endif // __vmi_class_type_info @@ -392,6 +397,8 @@ __base_class_type_info::search2(__dynamic_cast_info* info, const void* dynamic_p not_public_path); } +#ifdef DEBUG + void __vmi_class_type_info::display(const void* obj) const { @@ -421,6 +428,8 @@ __base_class_type_info::display(const void* obj) const __base_type->display((char*)obj + offset_to_base); } +#endif + // __pbase_type_info __pbase_type_info::~__pbase_type_info() @@ -514,18 +523,21 @@ __dynamic_cast(const void* static_ptr, const __class_type_info* dst_type, std::ptrdiff_t src2dst_offset) { +#ifdef DEBUG std::cout << "static_ptr = " << static_ptr << '\n'; std::cout << "static_type = " << static_type << '\n'; std::cout << "dst_type = " << dst_type << '\n'; std::cout << "src2dst_offset = " << src2dst_offset << '\n'; +#endif void** vtable = *(void***)static_ptr; ptrdiff_t offset_to_derived = (ptrdiff_t)vtable[-2]; const void* dynamic_ptr = (const char*)static_ptr + offset_to_derived; const __class_type_info* dynamic_type = (const __class_type_info*)vtable[-1]; +#ifdef DEBUG std::cout << "dynamic_ptr = " << dynamic_ptr << '\n'; std::cout << "dynamic_type = " << dynamic_type << '\n'; dynamic_type->display(dynamic_ptr); - +#endif const void* dst_ptr = 0; __dynamic_cast_info info = {dst_type, static_ptr, static_type, src2dst_offset, 0}; if (dynamic_type == dst_type) |