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time.cpp
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time.cpp
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#include "config.h"
#include "vm.hpp"
#include "vm/object_utils.hpp"
#include "objectmemory.hpp"
#include "primitives.hpp"
#include "builtin/array.hpp"
#include "builtin/class.hpp"
#include "builtin/exception.hpp"
#include "builtin/integer.hpp"
#include "builtin/string.hpp"
#include "builtin/time.hpp"
#include "ontology.hpp"
#include "util/time.h"
#include <sys/time.h>
#include <time.h>
#include "windows_compat.h"
#include "configuration.hpp"
namespace rubinius {
void Time::init(STATE) {
GO(time_class).set(ontology::new_class(state, "Time", G(object)));
G(time_class)->set_object_type(state, TimeType);
}
Time* Time::now(STATE, Object* self) {
Time* tm = state->new_object<Time>(as<Class>(self));
#ifdef HAVE_CLOCK_GETTIME
struct timespec ts;
::clock_gettime(CLOCK_REALTIME, &ts);
tm->seconds_ = ts.tv_sec;
tm->nanoseconds_ = ts.tv_nsec;
#else
struct timeval tv;
/* don't fill in the 2nd argument here. getting the timezone here
* this way is not portable and broken anyway.
*/
::gettimeofday(&tv, NULL);
tm->seconds_ = tv.tv_sec;
tm->nanoseconds_ = tv.tv_usec * 1000;
#endif
tm->is_gmt(state, cFalse);
return tm;
}
// Taken from MRI
#define NDIV(x,y) (-(-((x)+1)/(y))-1)
#define NMOD(x,y) ((y)-(-((x)+1)%(y))-1)
Time* Time::specific(STATE, Object* self, Integer* sec, Integer* nsec,
Object* gmt, Object* offset)
{
Time* tm = state->new_object<Time>(as<Class>(self));
if(sizeof(time_t) == sizeof(long long)) {
tm->seconds_ = sec->to_long_long();
tm->nanoseconds_ = nsec->to_long_long();
} else {
tm->seconds_ = sec->to_native();
tm->nanoseconds_ = nsec->to_native();
}
// Do a little overflow cleanup.
if(tm->nanoseconds_ >= 1000000000) {
tm->seconds_ += tm->nanoseconds_ / 1000000000;
tm->nanoseconds_ %= 1000000000;
}
if(tm->nanoseconds_ < 0) {
tm->seconds_ += NDIV(tm->nanoseconds_, 1000000000);
tm->nanoseconds_ = NMOD(tm->nanoseconds_, 1000000000);
}
if(LANGUAGE_18_ENABLED(state)) {
tm->nanoseconds_ -= (tm->nanoseconds_ % 1000);
}
tm->is_gmt(state, CBOOL(gmt) ? cTrue : cFalse);
tm->offset(state, offset);
return tm;
}
Time* Time::from_array(STATE, Object* self,
Fixnum* sec, Fixnum* min, Fixnum* hour,
Fixnum* mday, Fixnum* mon, Fixnum* year, Fixnum* nsec,
Fixnum* isdst, Object* from_gmt, Object* offset,
Fixnum* offset_sec, Fixnum* offset_nsec) {
struct tm tm;
tm.tm_sec = sec->to_native();
if(tm.tm_sec < 0 || tm.tm_sec > 60) {
Exception::argument_error(state, "sec must be in 0..60");
}
tm.tm_min = min->to_native();
if(tm.tm_min < 0 || tm.tm_min > 60) {
Exception::argument_error(state, "min must be in 0..60");
}
tm.tm_hour = hour->to_native();
if(tm.tm_hour < 0 || tm.tm_hour > 24) {
Exception::argument_error(state, "hour must be in 0..24");
}
tm.tm_mday = mday->to_native();
if(tm.tm_mday < 1 || tm.tm_mday > 31) {
Exception::argument_error(state, "mday must be in 1..31");
}
tm.tm_mon = mon->to_native() - 1;
if(tm.tm_mon < 0 || tm.tm_mon > 11) {
Exception::argument_error(state, "mon must be in 0..11");
}
tm.tm_wday = -1;
#ifdef HAVE_TM_GMTOFF
tm.tm_gmtoff = 0;
#endif
#ifdef HAVE_TM_ZONE
tm.tm_zone = 0;
#endif
tm.tm_year = year->to_native() - 1900;
tm.tm_isdst = isdst->to_native();
time_t seconds = -1;
if(CBOOL(from_gmt) || !offset->nil_p()) {
seconds = ::timegm(&tm);
} else {
tzset();
seconds = ::mktime(&tm);
}
int err = 0;
if(seconds == -1) {
int utc_p = (CBOOL(from_gmt) || !offset->nil_p()) ? 1 : 0;
seconds = mktime_extended(&tm, utc_p, &err);
}
if(err) Exception::argument_error(state, "time out of range");
Time* obj = state->new_object<Time>(as<Class>(self));
obj->seconds_ = seconds;
obj->nanoseconds_ = nsec->to_native();
obj->is_gmt(state, CBOOL(from_gmt) ? cTrue : cFalse);
if(!offset->nil_p()) {
obj->seconds_ -= offset_sec->to_native();
obj->nanoseconds_ -= offset_nsec->to_native();
// Deal with underflow wrapping
if(obj->nanoseconds_ < 0) {
obj->seconds_ += NDIV(obj->nanoseconds_, 1000000000);
obj->nanoseconds_ = NMOD(obj->nanoseconds_, 1000000000);
}
obj->offset(state, offset);
}
return obj;
}
Time* Time::dup(STATE, Object* self, Time* other) {
Time* tm = state->new_object<Time>(as<Class>(self));
tm->seconds_ = other->seconds_;
tm->nanoseconds_ = other->nanoseconds_;
tm->is_gmt(state, other->is_gmt_);
return tm;
}
struct tm Time::get_tm() {
time_t seconds = seconds_;
struct tm tm = {0};
if(Fixnum* off = try_as<Fixnum>(offset_)) {
seconds += off->to_native();
gmtime_r(&seconds, &tm);
} else if(CBOOL(is_gmt_)) {
gmtime_r(&seconds, &tm);
} else {
tzset();
localtime_r(&seconds, &tm);
}
return tm;
}
Object* Time::utc_offset(STATE) {
if(CBOOL(is_gmt_)) {
return Fixnum::from(0);
} else if(!offset_->nil_p()) {
return offset_;
}
native_int off;
#ifdef HAVE_TM_NAME
struct tm tm = get_tm();
off = -tm.tm_tzadj;
#else /* !HAVE_TM_NAME */
#ifdef HAVE_TM_ZONE
#ifdef HAVE_TM_GMTOFF
struct tm tm = get_tm();
off = tm.tm_gmtoff;
#else
off = _timezone;
#endif
#else /* !HAVE_TM_ZONE */
#if HAVE_VAR_TIMEZONE
#if HAVE_VAR_ALTZONE
off = -(daylight ? timezone : altzone);
#else
off = -timezone;
#endif
#else /* !HAVE_VAR_TIMEZONE */
#ifdef HAVE_GETTIMEOFDAY
gettimeofday(&tv, &zone);
off = -zone.tz_minuteswest * 60;
#else
/* no timezone info, then calc by myself */
{
struct tm utc;
time_t now;
time(&now);
utc = *gmtime(&now);
off = (now - mktime(&utc));
}
#endif
#endif /* !HAVE_VAR_TIMEZONE */
#endif /* !HAVE_TM_ZONE */
#endif /* !HAVE_TM_NAME */
return Fixnum::from(off);
}
Array* Time::calculate_decompose(STATE) {
if(!decomposed_->nil_p()) return decomposed_;
struct tm tm = get_tm();
/* update Time::TM_FIELDS when changing order of fields */
Array* ary = Array::create(state, 11);
ary->set(state, 0, Integer::from(state, tm.tm_sec));
ary->set(state, 1, Integer::from(state, tm.tm_min));
ary->set(state, 2, Integer::from(state, tm.tm_hour));
ary->set(state, 3, Integer::from(state, tm.tm_mday));
ary->set(state, 4, Integer::from(state, tm.tm_mon + 1));
ary->set(state, 5, Integer::from(state, tm.tm_year + 1900));
ary->set(state, 6, Integer::from(state, tm.tm_wday));
ary->set(state, 7, Integer::from(state, tm.tm_yday + 1));
ary->set(state, 8, tm.tm_isdst ? cTrue : cFalse);
const char* tmzone;
if(offset_->nil_p() && (tmzone = timezone_extended(&tm))) {
ary->set(state, 9, String::create(state, tmzone));
} else {
ary->set(state, 9, cNil);
}
// Cache it.
decomposed(state, ary);
return ary;
}
#define STRFTIME_STACK_BUF 128
String* Time::strftime(STATE, String* format) {
struct tm tm = get_tm();
struct timespec ts;
ts.tv_sec = seconds_;
ts.tv_nsec = nanoseconds_;
int off = 0;
if(Fixnum* offset = try_as<Fixnum>(utc_offset(state))) {
off = offset->to_int();
}
char stack_str[STRFTIME_STACK_BUF];
char* malloc_str = 0;
size_t chars = ::strftime_extended(stack_str, STRFTIME_STACK_BUF,
format->c_str(state), &tm, &ts, CBOOL(is_gmt_) ? 1 : 0,
off);
size_t buf_size = format->byte_size() * 2;
String* result = 0;
if (chars == 0 && format->byte_size() > 0) {
malloc_str = (char*)malloc(buf_size);
chars = ::strftime_extended(malloc_str, buf_size,
format->c_str(state), &tm, &ts, CBOOL(is_gmt_) ? 1 : 0,
off);
while (chars == 0 && format->byte_size() > 0) {
buf_size *= 2;
malloc_str = (char*)realloc(malloc_str, buf_size);
chars = ::strftime_extended(malloc_str, buf_size,
format->c_str(state), &tm, &ts, CBOOL(is_gmt_) ? 1 : 0,
off);
}
result = String::create(state, malloc_str, chars);
free(malloc_str);
} else {
result = String::create(state, stack_str, chars);
}
return result;
}
}