/*----------------------------------------------------------------------
| NPT_System::SleepUntil
+---------------------------------------------------------------------*/
NPT_Result
NPT_System::SleepUntil(const NPT_TimeStamp& when)
{
struct timespec timeout;
struct timeval now;
int result;
// get current time from system
if (gettimeofday(&now, NULL)) {
return NPT_FAILURE;
}
// setup timeout
NPT_UInt64 limit = (NPT_UInt64)now.tv_sec*1000000000 +
(NPT_UInt64)now.tv_usec*1000 +
when.ToNanos();
timeout.tv_sec = (time_t)limit/1000000000;
timeout.tv_nsec = limit%1000000000;
// sleep
do {
result = pthread_cond_timedwait(&NPT_PosixSystem::System.m_SleepCondition,
&NPT_PosixSystem::System.m_SleepMutex,
&timeout);
if (result == ETIMEDOUT) {
return NPT_SUCCESS;
}
} while (result == EINTR);
return NPT_FAILURE;
}
/*----------------------------------------------------------------------
| NPT_Win32Thread::EntryPoint
+---------------------------------------------------------------------*/
unsigned int __stdcall
NPT_Win32Thread::EntryPoint(void* argument)
{
NPT_Win32Thread* thread = reinterpret_cast<NPT_Win32Thread*>(argument);
NPT_LOG_FINER("thread in =======================");
// set random seed per thread
NPT_TimeStamp now;
NPT_System::GetCurrentTimeStamp(now);
NPT_System::SetRandomSeed((NPT_UInt32)(now.ToNanos()) + ::GetCurrentThreadId());
thread->m_ThreadId = (DWORD)::GetCurrentThreadId();
// run the thread
thread->Run();
// if the thread is detached, delete it
if (thread->m_Detached) {
delete thread->m_Delegator;
}
// done
return 0;
}
/*----------------------------------------------------------------------
| NPT_System::GetRandomInteger
+---------------------------------------------------------------------*/
NPT_UInt32
NPT_System::GetRandomInteger()
{
static bool seeded = false;
if (seeded == false) {
NPT_TimeStamp now;
GetCurrentTimeStamp(now);
SetRandomSeed((NPT_UInt32)now.ToNanos());
seeded = true;
}
return rand();
}
/*----------------------------------------------------------------------
| NPT_DateTime::ChangeTimeZone
+---------------------------------------------------------------------*/
NPT_Result
NPT_DateTime::ChangeTimeZone(NPT_Int32 timezone)
{
if (timezone < -12*60 || timezone > 12*60) {
return NPT_ERROR_OUT_OF_RANGE;
}
NPT_TimeStamp ts;
NPT_Result result = ToTimeStamp(ts);
if (NPT_FAILED(result)) return result;
ts.SetNanos(ts.ToNanos()+(NPT_Int64)timezone*(NPT_Int64)60*(NPT_Int64)1000000000);
result = FromTimeStamp(ts);
m_TimeZone = timezone;
return result;
}
/*----------------------------------------------------------------------
| NPT_DateTime::FromTimeStamp
+---------------------------------------------------------------------*/
NPT_Result
NPT_DateTime::FromTimeStamp(const NPT_TimeStamp& ts, bool local)
{
// number of seconds from the epoch (positive or negative)
NPT_Int64 seconds = ts.ToSeconds();
// check the range (we only allow up to 31 bits of negative range for seconds
// in order to have the same lower bound as the 32-bit gmtime() function)
if (seconds < 0 && (NPT_Int32)seconds != seconds) return NPT_ERROR_OUT_OF_RANGE;
// adjust for the timezone if necessary
NPT_Int32 timezone = 0;
if (local) {
timezone = GetLocalTimeZone();
seconds += timezone*60;
}
// adjust to the number of seconds since 1900
seconds += (NPT_Int64)NPT_SECONDS_PER_YEAR*70 +
(NPT_Int64)(17*NPT_SECONDS_PER_DAY); // 17 leap year between 1900 and 1970
// compute the years since 1900, not adjusting for leap years
NPT_UInt32 years_since_1900 = (NPT_UInt32)(seconds/NPT_SECONDS_PER_YEAR);
// compute the number of seconds elapsed in the current year
seconds -= (NPT_Int64)years_since_1900 * NPT_SECONDS_PER_YEAR;
// adjust for leap years
bool is_leap_year = false;
NPT_UInt32 leap_years_since_1900 = ElapsedLeapYearsSince1900(years_since_1900+1900);
if (seconds < (leap_years_since_1900 * NPT_SECONDS_PER_DAY)) {
// not enough seconds in the current year to compensate, move one year back
seconds += NPT_SECONDS_PER_YEAR;
seconds -= leap_years_since_1900 * NPT_SECONDS_PER_DAY;
--years_since_1900;
if (NPT_TIME_YEAR_IS_LEAP(years_since_1900+1900) ) {
seconds += NPT_SECONDS_PER_DAY;
is_leap_year = true;
}
} else {
seconds -= leap_years_since_1900 * NPT_SECONDS_PER_DAY;
if (NPT_TIME_YEAR_IS_LEAP(years_since_1900+1900) ) {
is_leap_year = true;
}
}
// now we know the year
m_Year = years_since_1900+1900;
// compute the number of days since January 1 (0 - 365)
NPT_UInt32 day_of_the_year = (NPT_UInt32)(seconds/NPT_SECONDS_PER_DAY);
// compute the number of seconds in the current day
seconds -= day_of_the_year * NPT_SECONDS_PER_DAY;
// compute the number of months since January (0 - 11) and the day of month (1 - 31) */
const NPT_Int32* month_day = is_leap_year?NPT_TIME_MONTH_DAY_LEAP:NPT_TIME_MONTH_DAY;
NPT_UInt32 month;
for (month = 1; month_day[month] < (NPT_Int32)day_of_the_year ; month++) {}
// now we know the month and day
m_Month = month;
m_Day = day_of_the_year - month_day[month-1];
// compute the number of hours since midnight (0 - 23), minutes after the hour
// (0 - 59), seconds after the minute (0 - 59) and nanoseconds
m_Hours = (NPT_Int32)seconds/3600;
seconds -= m_Hours * 3600L;
m_Minutes = (NPT_Int32)seconds / 60;
m_Seconds = (NPT_Int32)seconds - m_Minutes * 60;
m_NanoSeconds = (NPT_Int32)(ts.ToNanos()%1000000000);
if (local) {
m_TimeZone = timezone;
} else {
m_TimeZone = 0;
}
return NPT_SUCCESS;
}
/*----------------------------------------------------------------------
| TestPerformance
+---------------------------------------------------------------------*/
static void
TestPerformance()
{
for (unsigned int i=1; i<10000; i += 1000) {
NPT_TimeStamp before;
NPT_System::GetCurrentTimeStamp(before);
for (unsigned int j=0; j<10; j++) {
NPT_Map<NPT_String, NPT_String> map;
for (unsigned int k=0; k<i; k++) {
char key[64] = "blablabliblibloublou";
unsigned int run = NPT_System::GetRandomInteger()%8;
for (unsigned int x=0; x<run; x++) {
key[x] = 'A'+NPT_System::GetRandomInteger()%32;
}
map[key] = "hello";
}
}
NPT_TimeStamp after;
NPT_System::GetCurrentTimeStamp(after);
NPT_UInt64 duration = (after.ToNanos()-before.ToNanos())/10;
printf("LinearMap insert: %d\t%d ns\t\t%d ns/item\n", i, (NPT_UInt32)duration, (NPT_UInt32)(duration/i));
}
for (unsigned int i=1; i<10000; i += 1000) {
NPT_TimeStamp before;
NPT_System::GetCurrentTimeStamp(before);
for (unsigned int j=0; j<100; j++) {
NPT_HashMap<NPT_String, NPT_String> map;
for (unsigned int k=0; k<i; k++) {
char key[64] = "blablabliblibloublou";
unsigned int run = NPT_System::GetRandomInteger()%8;
for (unsigned int x=0; x<run; x++) {
key[x] = 'A'+NPT_System::GetRandomInteger()%32;
}
map[key] = "hello";
}
}
NPT_TimeStamp after;
NPT_System::GetCurrentTimeStamp(after);
NPT_UInt64 duration = (after.ToNanos()-before.ToNanos())/100;
printf("HashMap insert: %d\t%d ns\t\t%d ns/item\n", i, (NPT_UInt32)duration, (NPT_UInt32)(duration/i));
}
for (unsigned int i=1; i<10000; i += 1000) {
NPT_TimeStamp before;
NPT_System::GetCurrentTimeStamp(before);
for (unsigned int j=0; j<100; j++) {
NPT_HashMap<NPT_String, NPT_String> map;
for (unsigned int k=0; k<i; k++) {
char key[64] = "blablabliblibloublou";
unsigned int run = NPT_System::GetRandomInteger()%8;
for (unsigned int x=0; x<run; x++) {
key[x] = 'A'+NPT_System::GetRandomInteger()%32;
}
map[key] = "hello";
}
for (unsigned int k=0; k<i; k++) {
char key[64] = "blablabliblibloublou";
unsigned int run = NPT_System::GetRandomInteger()%8;
for (unsigned int x=0; x<run; x++) {
key[x] = 'A'+NPT_System::GetRandomInteger()%32;
}
map.Erase(key);
}
}
NPT_TimeStamp after;
NPT_System::GetCurrentTimeStamp(after);
NPT_UInt64 duration = (after.ToNanos()-before.ToNanos())/100;
printf("HashMap insert+erase: %d\t%d ns\t\t%d ns/item\n", i, (NPT_UInt32)duration, (NPT_UInt32)(duration/i));
}
}
