def measure_elapsed_time():
"""
Shows different ways to measure elapsed time in a sequence.
You can measure time in milliseconds, microseconds, or seconds.
Returns:
int: time, in milliseconds, it took to run this sequence.
"""
seqtime_timer = DoubleValue(0)
seqtime_us_timer = I64Value(0)
tick_ms_timer = I64Value(0)
tick_us_timer = I64Value(0)
# The following steps demonstrate different ways you can capture an initial timestamp:
seqtime_timer.value = seqtime()
seqtime_us_timer.value = seqtimeus()
tick_ms_timer.value = tickcountms()
tick_us_timer.value = tickcountus()
# Simulates work to time.
while iteration() < 1000:
nivs_yield()
# Measures the elapsed time by subtracting the initial timestamp from the current time.
seqtime_timer.value = seqtime() - seqtime_timer.value
seqtime_us_timer.value = seqtimeus() - seqtime_us_timer.value
tick_ms_timer.value = tickcountms() - tick_ms_timer.value
tick_us_timer.value = tickcountus() - tick_us_timer.value
return tick_ms_timer.value
def yield_multitask():
with multitask() as mt:
@task(mt)
def f1():
for a in range(5):
nivs_yield()
@task(mt)
def f2():
with multitask() as mt_inner:
@task(mt_inner)
def fa():
for b in range(7):
nivs_yield()
@task(mt_inner)
def fb():
for c in range(13):
nivs_yield()
a = I32Value(0)
a.value = iteration()
return a.value
def yield_many():
a = I32Value(0)
nivs_yield()
nivs_yield()
nivs_yield()
nivs_yield()
nivs_yield()
a.value = iteration()
return a.value
def yield_in_while():
a = I32Value(0)
while a.value < 10:
nivs_yield()
a.value = iteration()
return a.value
def yield_single():
a = I32Value(0)
nivs_yield()
a.value = iteration()
return a.value