diff options
| -rw-r--r-- | test/timer.cc | 18 | ||||
| -rw-r--r-- | timer.h | 7 |
2 files changed, 25 insertions, 0 deletions
diff --git a/test/timer.cc b/test/timer.cc index 5ac169c..3b5b5ac 100644 --- a/test/timer.cc +++ b/test/timer.cc @@ -1,5 +1,6 @@ #include <timer.h> #include <unistd.h> +#include <cassert> #include <cstdio> int main() { @@ -15,6 +16,9 @@ int main() { const timer::scoped_timer kS{t}; usleep(100 * 1000); } + assert(100000 < t.as_usec() && t.as_usec() < 101000); + assert(100 < t.as_msec() && t.as_msec() < 101); + assert(0.100 < t.as_sec() && t.as_sec() < 0.101); kShowTime(); { @@ -22,6 +26,20 @@ int main() { const timer::scoped_timer kS{t}; usleep(500 * 1000); } + assert(600000 < t.as_usec() && t.as_usec() < 601000); + assert(600 < t.as_msec() && t.as_msec() < 601); + assert(0.600 < t.as_sec() && t.as_sec() < 0.601); + kShowTime(); + + t.reset(); + { + puts("Sleep 200ms"); + timer::scoped_timer s{t}; + usleep(200 * 1000); + } + assert(200000 < t.as_usec() && t.as_usec() < 201000); + assert(200 < t.as_msec() && t.as_msec() < 201); + assert(0.200 < t.as_sec() && t.as_sec() < 0.201); kShowTime(); return 0; @@ -2,6 +2,7 @@ #include <ctime> namespace timer { +/// A minimal Linux watch clock. struct timer { constexpr timer() = default; @@ -17,6 +18,10 @@ struct timer { (end.tv_nsec - m_start.tv_nsec); } + constexpr void reset() { + m_nanos = 0; + } + constexpr double as_sec() const { return as_msec() / 1000.0; } @@ -36,6 +41,8 @@ struct timer { std::uint64_t m_nanos{0}; }; +/// A scoped timer to automatically start / stop a watch clock in the scope the +/// scoped_timer lives. struct scoped_timer { explicit scoped_timer(timer& t) : m_timer(t) { m_timer.start(); |