Khalil Estell kammce
kammce
/ xstdbitset.cpp
Last active
August 6, 2021 14:28
[Benchmark] C-style multibit insert vs C++ bitset
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| #include <bitset> | |
| #include <cinttypes> | |
| #include <cstdio> | |
| #include <limits> | |
| #include <type_traits> | |
| namespace xstd { | |
| struct bitrange { | |
| uint32_t position; |
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| struct _reent r = {0, (FILE *) 0, (FILE *) 1, (FILE *) 0}; | |
| struct _reent *_impure_ptr = &r; | |
| extern "C" void __cxa_pure_virtual() | |
| { | |
| // put your error handling here | |
| } | |
| extern "C" void __cxa_atexit() {} |
kammce
/ MockGpio.hpp
Created
December 8, 2020 15:22
Partial implementation of a mock peripheral for SJSU. This was used in test to verify if using a hand written mock was faster than FakeIt (24 seconds for small test). It was, but only by 1s.
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| namespace sjsu | |
| { | |
| /// Mock Gpio for usage in testing | |
| class MockGpio : public sjsu::Gpio | |
| { | |
| public: | |
| // Return values | |
| std::deque<bool> read_; | |
| std::deque<std::variant<Direction, State, std::pair<InterruptCallback, Edge>>> | |
| captures_; |
kammce
/ FixedAllocator.hpp
Created
December 6, 2020 17:50
Fixed size stack based allocator for std::containers. Removing this from SJSU-Dev2 but wanted to preserve it here for those who may want to use it. This allocator will be replaced with std::pmr going forward.
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| #pragma once | |
| #include <cstdint> | |
| #include <cstdlib> | |
| #include "utility/log.hpp" | |
| namespace sjsu | |
| { | |
| /// Arena class is a memory management class that takes an external buffer and |
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| #include <cstdio> | |
| #include <cstdint> | |
| #include <cinttypes> | |
| struct PllSettings_t | |
| { | |
| uint32_t multiplier; | |
| uint32_t feedback_divider; | |
| uint32_t output_divider; |
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| #include <cstdint> | |
| namespace std::experimental | |
| { | |
| class source_location | |
| { | |
| public: | |
| constexpr const char * file_name() const { return ""; } | |
| constexpr const char * function_name() const { return ""; } |
kammce
/ constexpr-constuctor.cpp
Last active
November 8, 2018 15:39
Demonstrates that C++ constexpr constructors do not appear in symbol tables if their objects are defined globally even at optimization level 0.
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| // Using g++ (Ubuntu 7.3.0-27ubuntu1~18.04) 7.3.0 | |
| // Notice: that I am using optimization level 0 here. | |
| // | |
| // To compile: | |
| // g++ -g3 -O0 -std=c++17 -o constexpr-constuctor.exe constexpr-constuctor.cpp | |
| // | |
| // To dump disassembly along with symbol table: | |
| // objdump --disassemble --all-headers --source --demangle --wide constexpr-constuctor.exe > constexpr-constuctor.asm | |
| // | |
| // To dump contents of .data section: |
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