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https://github.com/qmk/qmk_firmware
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70 lines
4.2 KiB
C
70 lines
4.2 KiB
C
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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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This API allows for basic profiling information to be printed out over console.
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Usage example:
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#include "basic_profiling.h"
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// Original code:
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matrix_task();
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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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// 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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#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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#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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#endif // CONSOLE_ENABLE
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#define PROFILE_CALL(count, call) PROFILE_CALL_NAMED(count, #call, call)
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