Vc/sse/debug.h

0001 /*  This file is part of the Vc library. {{{
0002 Copyright © 2011-2015 Matthias Kretz <kretz@kde.org>
0003
0004 Redistribution and use in source and binary forms, with or without
0005 modification, are permitted provided that the following conditions are met:
0006     * Redistributions of source code must retain the above copyright
0007       notice, this list of conditions and the following disclaimer.
0008     * Redistributions in binary form must reproduce the above copyright
0009       notice, this list of conditions and the following disclaimer in the
0010       documentation and/or other materials provided with the distribution.
0011     * Neither the names of contributing organizations nor the
0012       names of its contributors may be used to endorse or promote products
0013       derived from this software without specific prior written permission.
0014
0015 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
0016 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
0017 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
0018 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE FOR ANY
0019 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
0020 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
0021 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
0022 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
0023 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
0024 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
0025
0026 }}}*/
0027
0028 #ifndef VC_SSE_DEBUG_H_
0029 #define VC_SSE_DEBUG_H_
0030
0031 #ifndef NDEBUG
0032 #include "types.h"
0033 #include <iostream>
0034 #include <iomanip>
0035 #endif
0036
0037 namespace Vc_VERSIONED_NAMESPACE
0038 {
0039 namespace SSE
0040 {
0041
0042 #ifdef NDEBUG
0043 class DebugStream
0044 {
0045     public:
0046         DebugStream(const char *, const char *, int) {}
0047         template<typename T> inline DebugStream &operator<<(const T &) { return *this; }
0048 };
0049 #else
0050 class DebugStream
0051 {
0052     private:
0053         static char hexChar(char x) { return x + (x > 9 ? 87 : 48); }
0054         template<typename T, typename V> static void printVector(V _x)
0055         {
0056             std::cerr << "0x";
0057             const auto bytes = reinterpret_cast<const std::uint8_t *>(&_x);
0058             for (std::size_t i = 0; i < sizeof(V); ++i) {
0059                 std::cerr << hexChar(bytes[i] >> 4) << hexChar(bytes[i] & 0xf);
0060                 if (i % 4 == 3) {
0061                     std::cerr << '\'';
0062                 }
0063             }
0064
0065             enum { Size = sizeof(V) / sizeof(T) };
0066             union { V v; T m[Size]; } x = { _x };
0067             std::cerr << " = [" << std::setprecision(24) << x.m[0];
0068             for (int i = 1; i < Size; ++i) {
0069                 std::cerr << ", " << std::setprecision(24) << x.m[i];
0070             }
0071             std::cerr << ']';
0072         }
0073     public:
0074         DebugStream(const char *func, const char *file, int line)
0075         {
0076             std::cerr << "\033[1;40;33mDEBUG: " << file << ':' << line << ' ' << func << ' ';
0077         }
0078
0079         template<typename T> DebugStream &operator<<(const T &x) { std::cerr << x; return *this; }
0080
0081         DebugStream &operator<<(__m128 x) {
0082             printVector<float, __m128>(x);
0083             return *this;
0084         }
0085         DebugStream &operator<<(__m128d x) {
0086             printVector<double, __m128d>(x);
0087             return *this;
0088         }
0089         DebugStream &operator<<(__m128i x) {
0090             printVector<int, __m128i>(x);
0091             return *this;
0092         }
0093
0094         ~DebugStream()
0095         {
0096             std::cerr << "\033[0m" << std::endl;
0097         }
0098 };
0099 #endif
0100
0101 #define Vc_DEBUG Vc::SSE::DebugStream(__PRETTY_FUNCTION__, __FILE__, __LINE__)
0102
0103 }  // namespace SSE
0104 }  // namespace Vc
0105
0106 #endif // VC_SSE_DEBUG_H_