1 files changed, 126 insertions, 0 deletions

diff --git a/lib/chibios/os/rt/src/chstats.c b/lib/chibios/os/rt/src/chstats.c
new file mode 100644
index 000000000..f46ca5dbd
--- /dev/null
+++ b/lib/chibios/os/rt/src/chstats.c
@@ -0,0 +1,126 @@
+/*
+    ChibiOS - Copyright (C) 2006,2007,2008,2009,2010,2011,2012,2013,2014,
+              2015,2016,2017,2018,2019,2020,2021 Giovanni Di Sirio.
+
+    This file is part of ChibiOS.
+
+    ChibiOS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation version 3 of the License.
+
+    ChibiOS is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+/**
+ * @file    rt/src/chstats.c
+ * @brief   Statistics module code.
+ *
+ * @addtogroup statistics
+ * @details Statistics services.
+ * @{
+ */
+
+#include "ch.h"
+
+#if (CH_DBG_STATISTICS == TRUE) || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Module local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local types.                                                       */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local variables.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Module exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Initializes the statistics module.
+ *
+ * @init
+ */
+void _stats_init(void) {
+
+  ch.kernel_stats.n_irq = (ucnt_t)0;
+  ch.kernel_stats.n_ctxswc = (ucnt_t)0;
+  chTMObjectInit(&ch.kernel_stats.m_crit_thd);
+  chTMObjectInit(&ch.kernel_stats.m_crit_isr);
+}
+
+/**
+ * @brief   Increases the IRQ counter.
+ */
+void _stats_increase_irq(void) {
+
+  port_lock_from_isr();
+  ch.kernel_stats.n_irq++;
+  port_unlock_from_isr();
+}
+
+/**
+ * @brief   Updates context switch related statistics.
+ *
+ * @param[in] ntp       the thread to be switched in
+ * @param[in] otp       the thread to be switched out
+ */
+void _stats_ctxswc(thread_t *ntp, thread_t *otp) {
+
+  ch.kernel_stats.n_ctxswc++;
+  chTMChainMeasurementToX(&otp->stats, &ntp->stats);
+}
+
+/**
+ * @brief   Starts the measurement of a thread critical zone.
+ */
+void _stats_start_measure_crit_thd(void) {
+
+  chTMStartMeasurementX(&ch.kernel_stats.m_crit_thd);
+}
+
+/**
+ * @brief   Stops the measurement of a thread critical zone.
+ */
+void _stats_stop_measure_crit_thd(void) {
+
+  chTMStopMeasurementX(&ch.kernel_stats.m_crit_thd);
+}
+
+/**
+ * @brief   Starts the measurement of an ISR critical zone.
+ */
+void _stats_start_measure_crit_isr(void) {
+
+  chTMStartMeasurementX(&ch.kernel_stats.m_crit_isr);
+}
+
+/**
+ * @brief   Stops the measurement of an ISR critical zone.
+ */
+void _stats_stop_measure_crit_isr(void) {
+
+  chTMStopMeasurementX(&ch.kernel_stats.m_crit_isr);
+}
+
+#endif /* CH_DBG_STATISTICS == TRUE */
+
+/** @} */