diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/log.h | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/kernel/log.h b/kernel/log.h index dbfb6103e..d88dda889 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 |