wehub-resource-sync
48 lines
1.4 KiB
C++
48 lines
1.4 KiB
C++
#pragma once
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#include <chrono>
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#include <cstdio>
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/// Simplistic RAII scope for additional profiling.
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///
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/// All inlined on purpose.
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/// Not threadsafe due to indentation!
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class ProfileScope {
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public:
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// std::source_location would be nice here, but it's not widely enough supported
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// ProfileScope(const std::source_location& location = std::source_location::current())
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ProfileScope(const char* location)
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: _start(std::chrono::high_resolution_clock::now()), _location(location) {
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print_indent();
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printf("%s start …\n", _location);
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++_indentation;
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}
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~ProfileScope() {
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const auto end = std::chrono::high_resolution_clock::now();
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const auto duration =
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std::chrono::duration_cast<std::chrono::duration<double, std::milli>>(end - _start);
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--_indentation;
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print_indent();
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printf("%s end: %.2fms\n", _location, duration.count());
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}
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private:
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static void print_indent() {
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for (int i = 0; i < _indentation; ++i) {
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printf("--");
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}
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if (_indentation > 0) {
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printf(" ");
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}
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}
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std::chrono::high_resolution_clock::time_point _start;
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const char* _location;
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static int _indentation;
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};
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// Quick and dirty macro to profile a function.
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#define PROFILE_FUNCTION() ProfileScope _function_profile_scope(__FUNCTION__)
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