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authorNick Brassel <nick@tzarc.org>2023-04-06 08:10:40 +1000
committerGitHub <noreply@github.com>2023-04-06 08:10:40 +1000
commitb1b8cd1bf0c3bed0653b64a9be13ddb1dc269272 (patch)
treece728f92de87b7a970621d49f544241936a6c36b /quantum
parent89713112cd5d1e1f138a41a67ba687ea24d4a146 (diff)
Add basic profiler. (#20238)
Diffstat (limited to 'quantum')
-rw-r--r--quantum/basic_profiling.h69
1 files changed, 69 insertions, 0 deletions
diff --git a/quantum/basic_profiling.h b/quantum/basic_profiling.h
new file mode 100644
index 0000000000..d371acd6f0
--- /dev/null
+++ b/quantum/basic_profiling.h
@@ -0,0 +1,69 @@
+// Copyright 2023 Nick Brassel (@tzarc)
+// SPDX-License-Identifier: GPL-2.0-or-later
+#pragma once
+
+/*
+ This API allows for basic profiling information to be printed out over console.
+
+ Usage example:
+
+ #include "basic_profiling.h"
+
+ // Original code:
+ matrix_task();
+
+ // Delete the original, replace with the following (variant 1, automatic naming):
+ PROFILE_CALL(1000, matrix_task());
+
+ // Delete the original, replace with the following (variant 2, explicit naming):
+ PROFILE_CALL_NAMED(1000, "matrix_task", {
+ matrix_task();
+ });
+*/
+
+#if defined(PROTOCOL_LUFA) || defined(PROTOCOL_VUSB)
+# define TIMESTAMP_GETTER TCNT0
+#elif defined(PROTOCOL_CHIBIOS)
+# define TIMESTAMP_GETTER chSysGetRealtimeCounterX()
+#elif defined(PROTOCOL_ARM_ATSAM)
+# error arm_atsam not currently supported
+#else
+# error Unknown protocol in use
+#endif
+
+#ifndef CONSOLE_ENABLE
+// Can't do anything if we don't have console output enabled.
+# define PROFILE_CALL_NAMED(count, name, call) \
+ do { \
+ } while (0)
+#else
+# define PROFILE_CALL_NAMED(count, name, call) \
+ do { \
+ static uint64_t inner_sum = 0; \
+ static uint64_t outer_sum = 0; \
+ uint32_t start_ts; \
+ static uint32_t end_ts; \
+ static uint32_t write_location = 0; \
+ start_ts = TIMESTAMP_GETTER; \
+ if (write_location > 0) { \
+ outer_sum += start_ts - end_ts; \
+ } \
+ do { \
+ call; \
+ } while (0); \
+ end_ts = TIMESTAMP_GETTER; \
+ inner_sum += end_ts - start_ts; \
+ ++write_location; \
+ if (write_location >= ((uint32_t)count)) { \
+ uint32_t inner_avg = inner_sum / (((uint32_t)count) - 1); \
+ uint32_t outer_avg = outer_sum / (((uint32_t)count) - 1); \
+ dprintf("%s -- Percentage time spent: %d%%\n", (name), (int)(inner_avg * 100 / (inner_avg + outer_avg))); \
+ inner_sum = 0; \
+ outer_sum = 0; \
+ write_location = 0; \
+ } \
+ } while (0)
+
+#endif // CONSOLE_ENABLE
+
+#define PROFILE_CALL(count, call) PROFILE_CALL_NAMED(count, #call, call)