Yukihiro "Matz" Matsumoto 77b6febc19 mruby-task: improve sleep implementation with efficiency and safety ...

improved sleep_us_impl() in several ways:

1. dynamic sleep intervals: now sleeps for actual remaining time instead
   of fixed 1ms polling, reducing unnecessary wakeups and improving
   efficiency for longer sleeps

2. error handling: added checks for clock_gettime() failures with fallback
   to usleep(), and input validation to handle negative values

3. overflow prevention: use named constant USEC_PER_MSEC instead of
   literal 1000 for microsecond-to-nanosecond conversion, and validate
   input before conversion

4. wraparound handling: fixed tick comparison at line 580 to use signed
   arithmetic like other tick comparisons in the codebase

5. code clarity: added time conversion constants (NSEC_PER_MSEC,
   NSEC_PER_SEC, USEC_PER_MSEC) to replace magic numbers

all tests pass.

Co-authored-by: Claude <noreply@anthropic.com>

2025-10-10 16:30:50 +09:00

..

task.c

mruby-task: improve sleep implementation with efficiency and safety

2025-10-10 16:30:50 +09:00