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authorDaniel Friesel <derf@finalrewind.org>2018-12-13 14:24:34 +0100
committerDaniel Friesel <derf@finalrewind.org>2018-12-13 14:24:34 +0100
commit566e698caf23dc034335cfbb05641726ec4c273b (patch)
tree62d60388c11a76ccd18f2d71b742caedcebab732 /include/arch/posix/driver
parentebd3e2890cad3fbc9b0293b91173995d191ee804 (diff)
add fake counter driver for arch=posix
Diffstat (limited to 'include/arch/posix/driver')
-rw-r--r--include/arch/posix/driver/counter.h31
1 files changed, 31 insertions, 0 deletions
diff --git a/include/arch/posix/driver/counter.h b/include/arch/posix/driver/counter.h
new file mode 100644
index 0000000..6390d14
--- /dev/null
+++ b/include/arch/posix/driver/counter.h
@@ -0,0 +1,31 @@
+#include <stdint.h>
+#include <time.h>
+
+class Counter {
+ private:
+ Counter(const Counter &copy);
+ uint64_t start_sec, start_nsec;
+
+ public:
+ uint64_t value;
+ volatile uint8_t overflowed;
+
+ Counter() : overflowed(0) {}
+
+ inline void start() {
+ struct timespec ts;
+ clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
+ start_sec = ts.tv_sec;
+ start_nsec = ts.tv_nsec;
+ }
+
+ inline void stop() {
+ struct timespec ts;
+ clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts);
+
+ value = (ts.tv_sec - start_sec) * 1000000000UL;
+ value += ts.tv_nsec - start_nsec;
+ }
+};
+
+extern Counter counter;