task_impl::usage_info task_impl::process_task_data()
{
task_t task;
auto ret = task_for_pid( mach_task_self(), m_pid, &task );
if( ret != KERN_SUCCESS )
{
BOOST_THROW_EXCEPTION( err::sys_api_error()
<< err::description( fmt::format(
"task_for_pid({}) failed", m_pid ) )
<< err::mach_error( ret ) );
}
struct task_basic_info_64 ti;
mach_msg_type_number_t count;
count = TASK_BASIC_INFO_64_COUNT;
ret = task_info( task, TASK_BASIC_INFO_64, (task_info_t)&ti, &count );
if( ret != KERN_SUCCESS )
{
BOOST_THROW_EXCEPTION(
err::sys_api_error()
<< err::description( fmt::format( "task_info({}) failed", m_pid ) )
<< err::mach_error( ret ) );
}
m_real_mem_size = ti.resident_size;
m_virtual_mem_size = ti.virtual_size;
return std::make_tuple( to_timeval( ti.user_time ),
to_timeval( ti.system_time ) );
}
static void add_time(ambit_date_time_t *intime, int32_t offset, ambit_date_time_t *outtime)
{
struct timeval timeval;
struct tm *tm;
to_timeval(intime, &timeval);
if (offset >= 0) {
timeval.tv_sec += offset / 1000;
timeval.tv_usec += (offset % 1000)*1000;
}
else {
timeval.tv_sec += offset / 1000;
timeval.tv_usec -= (abs(offset) % 1000)*1000;
}
if (timeval.tv_usec >= 1000000) {
timeval.tv_sec++;
timeval.tv_usec -= 1000000;
}
if(timeval.tv_usec < 0) {
timeval.tv_sec--;
timeval.tv_usec += 1000000;
}
tm = gmtime(&timeval.tv_sec);
outtime->msec = tm->tm_sec * 1000 + (timeval.tv_usec / 1000);
outtime->minute = tm->tm_min;
outtime->hour = tm->tm_hour;
outtime->day = tm->tm_mday;
outtime->month = tm->tm_mon;
outtime->year = tm->tm_year;
}
/* provide a function to hide the libc weak alias */
int gettimeofday(struct timeval *tv, ...)
{
to_timeval(transform(now()), tv);
return 0;
}
