Adds timer to a write stream. More...
#include <rwtimer.h>
Inheritance diagram for scc::util::WriteTimer:
Collaboration diagram for scc::util::WriteTimer:
Public Member Functions | |
| WriteTimer () | |
| Writes return 0 until reset. | |
| WriteTimer (Writer &) | |
| Chain using a reference. More... | |
| WriteTimer (const std::shared_ptr< Writer > &) | |
| Chain using a shared pointer. | |
| void | write_reset (Writer &) |
| Reset the chained writer. | |
| virtual void | write_reset (const std::shared_ptr< Writer > &) |
| Reset the chained writer. | |
| virtual std::shared_ptr< Writer > | write_shared () const |
| virtual size_t | write (const void *, size_t) |
| Write and update time over underlying write. | |
| std::chrono::nanoseconds | write_dur () const |
| void | write_dur (std::chrono::nanoseconds v) |
| void | write_dur_reset () |
| uint64_t | write_calls () const |
| void | write_calls_reset () |
Detailed Description
Adds timer to a write stream.
Example from scclib/util/unittest/iohelper.cc
using std::chrono::milliseconds;
using std::chrono::duration_cast;
struct Slow : public Reader, public Writer
{
Slow() {}
virtual ~Slow() {}
size_t read(void*, size_t l)
{
std::this_thread::sleep_for(milliseconds(50));
return l;
}
{
std::this_thread::sleep_for(milliseconds(100));
return l;
}
};
Slow base;
RwCounter c(base, base);
RwTimer t(c, c);
t.read(0, 50);
t.write(0, 100);
cout << "read timer=" << t.read_dur().count() << endl;
cout << "write timer=" << t.write_dur().count() << endl;
cout << "read count=" << c.read_count() << endl;
cout << "write count=" << c.write_count() << endl;
ASSERT_EQ(duration_cast<milliseconds>(t.read_dur()).count(), 50);
ASSERT_EQ(duration_cast<milliseconds>(t.write_dur()).count(), 100);
ASSERT_EQ(c.read_count(), 50);
ASSERT_EQ(c.write_count(), 100);
virtual size_t write(const void *, size_t)
Write and update time over underlying write.
Definition: iostream.cc:760
Constructor & Destructor Documentation
◆ WriteTimer()
| WriteTimer::WriteTimer | ( | Writer & | w | ) |
The documentation for this class was generated from the following files:
- util/pub/util/rwtimer.h
- util/iostream.cc
