53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
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#pragma once
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#include <cstdint>
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#include <string>
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#include <string_view>
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#include "pico/time.h"
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struct log_entry {
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uint32_t timestamp_us;
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std::string message;
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};
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class log_iterator {
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const log_entry* data;
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uint16_t base;
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uint16_t cap;
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uint16_t pos;
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public:
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log_iterator(const log_entry* d, uint16_t b, uint16_t c, uint16_t p)
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: data(d), base(b), cap(c), pos(p) {}
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const log_entry& operator*() const { return data[(base + pos) % cap]; }
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log_iterator& operator++() { ++pos; return *this; }
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bool operator!=(const log_iterator& o) const { return pos != o.pos; }
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};
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class log_view {
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const log_entry* data;
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uint16_t base;
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uint16_t cap;
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uint16_t count;
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public:
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log_view(const log_entry* d, uint16_t b, uint16_t c, uint16_t n)
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: data(d), base(b), cap(c), count(n) {}
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log_iterator begin() const { return {data, base, cap, 0}; }
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log_iterator end() const { return {data, base, cap, count}; }
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};
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log_view log_entries();
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void dlog(std::string_view msg);
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__attribute__((format(printf, 1, 2)))
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void dlogf(const char* fmt, ...);
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template <typename F>
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inline void dlog_if_slow(std::string_view label, uint32_t threshold_us, F&& fn) {
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uint32_t t0 = time_us_32();
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fn();
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uint32_t elapsed = time_us_32() - t0;
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if (elapsed > threshold_us) {
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dlogf("%.*s %luus", static_cast<int>(label.size()), label.data(), static_cast<unsigned long>(elapsed));
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}
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}
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