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-rw-r--r--Makefile4
-rw-r--r--kernel/log.h41
2 files changed, 43 insertions, 2 deletions
diff --git a/Makefile b/Makefile
index 3551723f..06466fda 100644
--- a/Makefile
+++ b/Makefile
@@ -20,7 +20,7 @@ all: top-all
CXXFLAGS = -Wall -Wextra -ggdb -I"$(shell pwd)" -MD -D_YOSYS_ -fPIC
LDFLAGS = -rdynamic
-LDLIBS = -lstdc++ -lreadline -lm -ldl
+LDLIBS = -lstdc++ -lreadline -lm -ldl -lrt
QMAKE = qmake-qt4
YOSYS_VER := 0.0.x
@@ -155,7 +155,7 @@ config-release: clean
echo 'CONFIG := release' > Makefile.conf
config-gprof: clean
- echo 'CONFIG := release' > Makefile.conf
+ echo 'CONFIG := gcc-debug' > Makefile.conf
echo 'ENABLE_GPROF := 1' >> Makefile.conf
config-sudo:
diff --git a/kernel/log.h b/kernel/log.h
index dbfb6103..d88dda88 100644
--- a/kernel/log.h
+++ b/kernel/log.h
@@ -22,6 +22,7 @@
#include "kernel/rtlil.h"
#include <stdio.h>
+#include <time.h>
#include <vector>
extern std::vector<FILE*> log_files;
@@ -52,4 +53,44 @@ const char *log_signal(const RTLIL::SigSpec &sig, bool autoint = true);
#define log_abort() log_error("Abort in %s:%d.\n", __FILE__, __LINE__)
#define log_assert(_assert_expr_) do { if (_assert_expr_) break; log_error("Assert `%s' failed in %s:%d.\n", #_assert_expr_, __FILE__, __LINE__); } while (0)
+// simple timer for performance measurements
+// toggle the '#if 1' to get a baseline for the perormance penalty added by the measurement
+struct PerformanceTimer
+{
+#if 1
+ int64_t total_ns;
+
+ PerformanceTimer() {
+ total_ns = 0;
+ }
+
+ static int64_t query() {
+ struct timespec ts;
+ clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts);
+ return int64_t(ts.tv_sec)*1000000000 + ts.tv_nsec;
+ }
+
+ void reset() {
+ total_ns = 0;
+ }
+
+ void add() {
+ total_ns += query();
+ }
+
+ void sub() {
+ total_ns -= query();
+ }
+
+ float sec() const {
+ return total_ns * 1e-9;
+ }
+#else
+ void reset() { }
+ void add() { }
+ void sub() { }
+ float sec() const { return 0; }
+#endif
+};
+
#endif