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Merge pull request #232 from bluescarni/pr/complex
Complex class
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| Original file line number | Diff line number | Diff line change |
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| // Copyright 2016-2020 Francesco Biscani ([email protected]) | ||
| // | ||
| // This file is part of the mp++ library. | ||
| // | ||
| // This Source Code Form is subject to the terms of the Mozilla | ||
| // Public License v. 2.0. If a copy of the MPL was not distributed | ||
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
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| #include "track_malloc.hpp" | ||
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| #if defined(MPPP_HAVE_GLIBC) | ||
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| #include <atomic> | ||
| #include <cstddef> | ||
| #include <iostream> | ||
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| namespace mppp_bench | ||
| { | ||
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| namespace detail | ||
| { | ||
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| namespace | ||
| { | ||
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| // The tracking counter. This will be increased | ||
| // each time the malloc() override below is | ||
| // invoked. | ||
| std::atomic<std::size_t> malloc_counter(0); | ||
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| } // namespace | ||
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| } // namespace detail | ||
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| } // namespace mppp_bench | ||
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| // NOTE: see here for an explanation: | ||
| // https://stackoverflow.com/questions/17803456/an-alternative-for-the-deprecated-malloc-hook-functionality-of-glibc | ||
| extern "C" void *__libc_malloc(std::size_t size); | ||
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| // NOTE: apparently it is not necessary to declare | ||
| // this function as visible. | ||
| extern "C" void *malloc(std::size_t size) | ||
| { | ||
| ++mppp_bench::detail::malloc_counter; | ||
| return ::__libc_malloc(size); | ||
| } | ||
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| namespace mppp_bench | ||
| { | ||
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| malloc_tracker::malloc_tracker(const char *s) : m_name(s), m_count(detail::malloc_counter.load()) {} | ||
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| malloc_tracker::~malloc_tracker() | ||
| { | ||
| // NOTE: compute the total number of allocations | ||
| // before outputting to stream, so that we avoid | ||
| // counting possible allocations from stream operations. | ||
| const auto tot_nalloc = detail::malloc_counter.load() - m_count; | ||
| std::cout << "Tracker '" << m_name << "' observed " << tot_nalloc << " malloc() calls." << std::endl; | ||
| } | ||
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| } // namespace mppp_bench | ||
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| #endif |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| // Copyright 2016-2020 Francesco Biscani ([email protected]) | ||
| // | ||
| // This file is part of the mp++ library. | ||
| // | ||
| // This Source Code Form is subject to the terms of the Mozilla | ||
| // Public License v. 2.0. If a copy of the MPL was not distributed | ||
| // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. | ||
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| #ifndef MPPP_BENCHMARK_TRACK_MALLOC_HPP | ||
| #define MPPP_BENCHMARK_TRACK_MALLOC_HPP | ||
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| // Machinery to check the presence of GLIBC. See: | ||
| // https://sourceforge.net/p/predef/wiki/Libraries/ | ||
| #include <climits> | ||
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| #if defined(__GNU_LIBRARY__) || defined(__GLIBC__) | ||
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| #define MPPP_HAVE_GLIBC | ||
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| #endif | ||
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| #if defined(MPPP_HAVE_GLIBC) | ||
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| #include <cstddef> | ||
| #include <string> | ||
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| namespace mppp_bench | ||
| { | ||
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| struct __attribute__((visibility("default"))) malloc_tracker { | ||
| explicit malloc_tracker(const char *); | ||
| ~malloc_tracker(); | ||
| // NOTE: it is important than m_name | ||
| // is inited befor m_count, so that | ||
| // we don't end up counting allocations | ||
| // from the string. | ||
| std::string m_name; | ||
| std::size_t m_count; | ||
| }; | ||
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| } // namespace mppp_bench | ||
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| #else | ||
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| namespace mppp_bench | ||
| { | ||
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| struct malloc_tracker { | ||
| explicit malloc_tracker(const char *) {} | ||
| ~malloc_tracker() {} | ||
| }; | ||
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| } // namespace mppp_bench | ||
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| #endif | ||
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| #endif |
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