converts the time even on 32-bit systems. Whether you have 64-bit time
values will depend on the operating system.
-localtime64_r() is a 64-bit equivalent of localtime_r().
+S_localtime64_r() is a 64-bit equivalent of localtime_r().
-gmtime64_r() is a 64-bit equivalent of gmtime_r().
+S_gmtime64_r() is a 64-bit equivalent of gmtime_r().
*/
# define SHOULD_USE_SYSTEM_GMTIME(a) (0)
#endif
+/* Multi varadic macros are a C99 thing, alas */
#ifdef TIME_64_DEBUG
-# define TRACE(format, ...) (fprintf(stderr, format, __VA_ARGS__))
-# define TRACE_NO_VARS(format) (fprintf(stderr, format))
+# define TIME64_TRACE(format) (fprintf(stderr, format))
+# define TIME64_TRACE1(format, var1) (fprintf(stderr, format, var1))
+# define TIME64_TRACE2(format, var1, var2) (fprintf(stderr, format, var1, var2))
+# define TIME64_TRACE3(format, var1, var2, var3) (fprintf(stderr, format, var1, var2, var3))
#else
-# define TRACE(format, ...) ((void)0)
-# define TRACE_NO_VARS(format) ((void)0)
+# define TIME64_TRACE(format) ((void)0)
+# define TIME64_TRACE1(format, var1) ((void)0)
+# define TIME64_TRACE2(format, var1, var2) ((void)0)
+# define TIME64_TRACE3(format, var1, var2, var3) ((void)0)
#endif
-static int is_exception_century(Year year)
+static int S_is_exception_century(Year year)
{
int is_exception = ((year % 100 == 0) && !(year % 400 == 0));
- TRACE("# is_exception_century: %s\n", is_exception ? "yes" : "no");
+ TIME64_TRACE1("# is_exception_century: %s\n", is_exception ? "yes" : "no");
return(is_exception);
}
-Time64_T timegm64(struct TM *date) {
+static Time64_T S_timegm64(struct TM *date) {
int days = 0;
Time64_T seconds = 0;
Year year;
}
-static int check_tm(struct TM *tm)
+#ifdef DEBUGGING
+static int S_check_tm(struct TM *tm)
{
/* Don't forget leap seconds */
assert(tm->tm_sec >= 0);
return 1;
}
+#endif
/* The exceptional centuries without leap years cause the cycle to
shift by 16
*/
-static Year cycle_offset(Year year)
+static Year S_cycle_offset(Year year)
{
const Year start_year = 2000;
Year year_diff = year - start_year;
exceptions = year_diff / 100;
exceptions -= year_diff / 400;
- TRACE("# year: %lld, exceptions: %lld, year_diff: %lld\n",
+ TIME64_TRACE3("# year: %lld, exceptions: %lld, year_diff: %lld\n",
year, exceptions, year_diff);
return exceptions * 16;
It doesn't need the same leap year status since we only care about
January 1st.
*/
-static int safe_year(Year year)
+static int S_safe_year(Year year)
{
int safe_year;
- Year year_cycle = year + cycle_offset(year);
+ Year year_cycle = year + S_cycle_offset(year);
/* Change non-leap xx00 years to an equivalent */
- if( is_exception_century(year) )
+ if( S_is_exception_century(year) )
year_cycle += 11;
/* Also xx01 years, since the previous year will be wrong */
- if( is_exception_century(year - 1) )
+ if( S_is_exception_century(year - 1) )
year_cycle += 17;
year_cycle %= SOLAR_CYCLE_LENGTH;
assert(safe_year <= 2037 && safe_year >= 2010);
- TRACE("# year: %lld, year_cycle: %lld, safe_year: %d\n",
+ TIME64_TRACE3("# year: %lld, year_cycle: %lld, safe_year: %d\n",
year, year_cycle, safe_year);
return safe_year;
}
-void copy_tm_to_TM(const struct tm *src, struct TM *dest) {
+static void S_copy_little_tm_to_big_TM(const struct tm *src, struct TM *dest) {
if( src == NULL ) {
memset(dest, 0, sizeof(*dest));
}
}
-void copy_TM_to_tm(const struct TM *src, struct tm *dest) {
- if( src == NULL ) {
- memset(dest, 0, sizeof(*dest));
- }
- else {
-# ifdef USE_TM64
- dest->tm_sec = src->tm_sec;
- dest->tm_min = src->tm_min;
- dest->tm_hour = src->tm_hour;
- dest->tm_mday = src->tm_mday;
- dest->tm_mon = src->tm_mon;
- dest->tm_year = (int)src->tm_year;
- dest->tm_wday = src->tm_wday;
- dest->tm_yday = src->tm_yday;
- dest->tm_isdst = src->tm_isdst;
-
-# ifdef HAS_TM_TM_GMTOFF
- dest->tm_gmtoff = src->tm_gmtoff;
-# endif
-
-# ifdef HAS_TM_TM_ZONE
- dest->tm_zone = src->tm_zone;
-# endif
-
-# else
- /* They're the same type */
- memcpy(dest, src, sizeof(*dest));
-# endif
- }
-}
-
-
+#ifndef HAS_LOCALTIME_R
/* Simulate localtime_r() to the best of our ability */
-struct tm * fake_localtime_r(const time_t *clock, struct tm *result) {
+static struct tm * S_localtime_r(const time_t *clock, struct tm *result) {
+ dTHX; /* in case the following is defined as Perl_my_localtime(aTHX_ ...) */
const struct tm *static_result = localtime(clock);
assert(result != NULL);
return result;
}
}
+#endif
-
+#ifndef HAS_GMTIME_R
/* Simulate gmtime_r() to the best of our ability */
-struct tm * fake_gmtime_r(const time_t *clock, struct tm *result) {
+static struct tm * S_gmtime_r(const time_t *clock, struct tm *result) {
+ dTHX; /* in case the following is defined as Perl_my_gmtime(aTHX_ ...) */
const struct tm *static_result = gmtime(clock);
assert(result != NULL);
return result;
}
}
+#endif
-
-struct TM *gmtime64_r (const Time64_T *in_time, struct TM *p)
+static struct TM *S_gmtime64_r (const Time64_T *in_time, struct TM *p)
{
int v_tm_sec, v_tm_min, v_tm_hour, v_tm_mon, v_tm_wday;
Time64_T v_tm_tday;
/* Use the system gmtime() if time_t is small enough */
if( SHOULD_USE_SYSTEM_GMTIME(*in_time) ) {
- time_t safe_time = *in_time;
+ time_t safe_time = (time_t)*in_time;
struct tm safe_date;
GMTIME_R(&safe_time, &safe_date);
- copy_tm_to_TM(&safe_date, p);
- assert(check_tm(p));
+ S_copy_little_tm_to_big_TM(&safe_date, p);
+ assert(S_check_tm(p));
return p;
}
p->tm_isdst = 0;
#ifdef HAS_TM_TM_ZONE
- p->tm_zone = "UTC";
+ p->tm_zone = (char *)"UTC";
#endif
- v_tm_sec = (int)(time % 60);
- time /= 60;
- v_tm_min = (int)(time % 60);
- time /= 60;
- v_tm_hour = (int)(time % 24);
- time /= 24;
+ v_tm_sec = (int)fmod(time, 60.0);
+ time = time >= 0 ? floor(time / 60.0) : ceil(time / 60.0);
+ v_tm_min = (int)fmod(time, 60.0);
+ time = time >= 0 ? floor(time / 60.0) : ceil(time / 60.0);
+ v_tm_hour = (int)fmod(time, 24.0);
+ time = time >= 0 ? floor(time / 24.0) : ceil(time / 24.0);
v_tm_tday = time;
WRAP (v_tm_sec, v_tm_min, 60);
WRAP (v_tm_min, v_tm_hour, 60);
WRAP (v_tm_hour, v_tm_tday, 24);
- v_tm_wday = (int)((v_tm_tday + 4) % 7);
+ v_tm_wday = (int)fmod((v_tm_tday + 4.0), 7.0);
if (v_tm_wday < 0)
v_tm_wday += 7;
m = v_tm_tday;
if (m >= 0) {
/* Gregorian cycles, this is huge optimization for distant times */
- cycles = (int)(m / (Time64_T) days_in_gregorian_cycle);
+ cycles = (int)floor(m / (Time64_T) days_in_gregorian_cycle);
if( cycles ) {
m -= (cycles * (Time64_T) days_in_gregorian_cycle);
year += (cycles * years_in_gregorian_cycle);
year--;
/* Gregorian cycles */
- cycles = (int)((m / (Time64_T) days_in_gregorian_cycle) + 1);
+ cycles = (int)ceil((m / (Time64_T) days_in_gregorian_cycle) + 1);
if( cycles ) {
m -= (cycles * (Time64_T) days_in_gregorian_cycle);
year += (cycles * years_in_gregorian_cycle);
p->tm_mon = v_tm_mon;
p->tm_wday = v_tm_wday;
- assert(check_tm(p));
+ assert(S_check_tm(p));
return p;
}
-struct TM *localtime64_r (const Time64_T *time, struct TM *local_tm)
+static struct TM *S_localtime64_r (const Time64_T *time, struct TM *local_tm)
{
time_t safe_time;
struct tm safe_date;
/* Use the system localtime() if time_t is small enough */
if( SHOULD_USE_SYSTEM_LOCALTIME(*time) ) {
- safe_time = *time;
+ safe_time = (time_t)*time;
- TRACE("Using system localtime for %lld\n", *time);
+ TIME64_TRACE1("Using system localtime for %lld\n", *time);
LOCALTIME_R(&safe_time, &safe_date);
- copy_tm_to_TM(&safe_date, local_tm);
- assert(check_tm(local_tm));
+ S_copy_little_tm_to_big_TM(&safe_date, local_tm);
+ assert(S_check_tm(local_tm));
return local_tm;
}
- if( gmtime64_r(time, &gm_tm) == NULL ) {
- TRACE("gmtime64_r returned null for %lld\n", *time);
+ if( S_gmtime64_r(time, &gm_tm) == NULL ) {
+ TIME64_TRACE1("gmtime64_r returned null for %lld\n", *time);
return NULL;
}
gm_tm.tm_year < (1970 - 1900)
)
{
- TRACE("Mapping tm_year %lld to safe_year\n", (Year)gm_tm.tm_year);
- gm_tm.tm_year = safe_year((Year)(gm_tm.tm_year + 1900)) - 1900;
+ TIME64_TRACE1("Mapping tm_year %lld to safe_year\n", (Year)gm_tm.tm_year);
+ gm_tm.tm_year = S_safe_year((Year)(gm_tm.tm_year + 1900)) - 1900;
}
- safe_time = timegm64(&gm_tm);
+ safe_time = (time_t)S_timegm64(&gm_tm);
if( LOCALTIME_R(&safe_time, &safe_date) == NULL ) {
- TRACE("localtime_r(%d) returned NULL\n", (int)safe_time);
+ TIME64_TRACE1("localtime_r(%d) returned NULL\n", (int)safe_time);
return NULL;
}
- copy_tm_to_TM(&safe_date, local_tm);
+ S_copy_little_tm_to_big_TM(&safe_date, local_tm);
local_tm->tm_year = orig_year;
if( local_tm->tm_year != orig_year ) {
- TRACE("tm_year overflow: tm_year %lld, orig_year %lld\n",
+ TIME64_TRACE2("tm_year overflow: tm_year %lld, orig_year %lld\n",
(Year)local_tm->tm_year, (Year)orig_year);
#ifdef EOVERFLOW
/* GMT is Jan 1st, xx01 year, but localtime is still Dec 31st
in a non-leap xx00. There is one point in the cycle
we can't account for which the safe xx00 year is a leap
- year. So we need to correct for Dec 31st comming out as
+ year. So we need to correct for Dec 31st coming out as
the 366th day of the year.
*/
if( !IS_LEAP(local_tm->tm_year) && local_tm->tm_yday == 365 )
local_tm->tm_yday--;
- assert(check_tm(local_tm));
+ assert(S_check_tm(local_tm));
return local_tm;
}
https://perl5.git.perl.org / perl5.git / blobdiff