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+// Copyright 2023 Nick Brassel (@tzarc)
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+// SPDX-License-Identifier: GPL-2.0-or-later
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+#pragma once
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+
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+/*
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+ This API allows for basic profiling information to be printed out over console.
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+
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+ Usage example:
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+
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+ #include "basic_profiling.h"
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+
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+ // Original code:
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+ matrix_task();
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+
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+ // Delete the original, replace with the following (variant 1, automatic naming):
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+ PROFILE_CALL(1000, matrix_task());
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+
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+ // Delete the original, replace with the following (variant 2, explicit naming):
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+ PROFILE_CALL_NAMED(1000, "matrix_task", {
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+ matrix_task();
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+ });
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+*/
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+
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+#if defined(PROTOCOL_LUFA) || defined(PROTOCOL_VUSB)
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+# define TIMESTAMP_GETTER TCNT0
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+#elif defined(PROTOCOL_CHIBIOS)
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+# define TIMESTAMP_GETTER chSysGetRealtimeCounterX()
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+#elif defined(PROTOCOL_ARM_ATSAM)
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+# error arm_atsam not currently supported
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+#else
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+# error Unknown protocol in use
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+#endif
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+
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+#ifndef CONSOLE_ENABLE
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+// Can't do anything if we don't have console output enabled.
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+# define PROFILE_CALL_NAMED(count, name, call) \
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+ do { \
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+ } while (0)
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+#else
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+# define PROFILE_CALL_NAMED(count, name, call) \
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+ do { \
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+ static uint64_t inner_sum = 0; \
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+ static uint64_t outer_sum = 0; \
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+ uint32_t start_ts; \
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+ static uint32_t end_ts; \
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+ static uint32_t write_location = 0; \
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+ start_ts = TIMESTAMP_GETTER; \
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+ if (write_location > 0) { \
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+ outer_sum += start_ts - end_ts; \
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+ } \
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+ do { \
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+ call; \
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+ } while (0); \
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+ end_ts = TIMESTAMP_GETTER; \
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+ inner_sum += end_ts - start_ts; \
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+ ++write_location; \
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+ if (write_location >= ((uint32_t)count)) { \
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+ uint32_t inner_avg = inner_sum / (((uint32_t)count) - 1); \
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+ uint32_t outer_avg = outer_sum / (((uint32_t)count) - 1); \
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+ dprintf("%s -- Percentage time spent: %d%%\n", (name), (int)(inner_avg * 100 / (inner_avg + outer_avg))); \
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+ inner_sum = 0; \
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+ outer_sum = 0; \
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+ write_location = 0; \
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+ } \
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+ } while (0)
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+
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+#endif // CONSOLE_ENABLE
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+
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+#define PROFILE_CALL(count, call) PROFILE_CALL_NAMED(count, #call, call)
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Nick Brassel