#include <config.h>
#include <errno.h>
#include <limits.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <windows.h>
#include <isc/assertions.h>
#include <isc/time.h>
#include <isc/util.h>
#define NS_PER_S 1000000000
#define NS_INTERVAL 100
#define INTERVALS_PER_S (NS_PER_S / NS_INTERVAL)
#define UINT64_MAX _UI64_MAX
static isc_time_t epoch = { { 0, 0 } };
isc_time_t *isc_time_epoch = &epoch;
static isc_interval_t zero_interval = { 0 };
isc_interval_t *isc_interval_zero = &zero_interval;
void
isc_interval_set(isc_interval_t *i, unsigned int seconds,
unsigned int nanoseconds)
{
REQUIRE(i != NULL);
REQUIRE(nanoseconds < NS_PER_S);
i->interval = (LONGLONG)seconds * INTERVALS_PER_S
+ nanoseconds / NS_INTERVAL;
}
isc_boolean_t
isc_interval_iszero(isc_interval_t *i) {
REQUIRE(i != NULL);
if (i->interval == 0)
return (ISC_TRUE);
return (ISC_FALSE);
}
void
isc_time_settoepoch(isc_time_t *t) {
REQUIRE(t != NULL);
t->absolute.dwLowDateTime = 0;
t->absolute.dwHighDateTime = 0;
}
isc_boolean_t
isc_time_isepoch(isc_time_t *t) {
REQUIRE(t != NULL);
if (t->absolute.dwLowDateTime == 0 &&
t->absolute.dwHighDateTime == 0)
return (ISC_TRUE);
return (ISC_FALSE);
}
isc_result_t
isc_time_now(isc_time_t *t) {
REQUIRE(t != NULL);
GetSystemTimeAsFileTime(&t->absolute);
return (ISC_R_SUCCESS);
}
isc_result_t
isc_time_nowplusinterval(isc_time_t *t, isc_interval_t *i) {
ULARGE_INTEGER i1;
REQUIRE(t != NULL);
REQUIRE(i != NULL);
GetSystemTimeAsFileTime(&t->absolute);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
if (UINT64_MAX - i1.QuadPart < (unsigned __int64)i->interval)
return (ISC_R_RANGE);
i1.QuadPart += i->interval;
t->absolute.dwLowDateTime = i1.LowPart;
t->absolute.dwHighDateTime = i1.HighPart;
return (ISC_R_SUCCESS);
}
int
isc_time_compare(isc_time_t *t1, isc_time_t *t2) {
REQUIRE(t1 != NULL && t2 != NULL);
return ((int)CompareFileTime(&t1->absolute, &t2->absolute));
}
isc_result_t
isc_time_add(isc_time_t *t, isc_interval_t *i, isc_time_t *result) {
ULARGE_INTEGER i1;
REQUIRE(t != NULL && i != NULL && result != NULL);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
if (UINT64_MAX - i1.QuadPart < (unsigned __int64)i->interval)
return (ISC_R_RANGE);
i1.QuadPart += i->interval;
result->absolute.dwLowDateTime = i1.LowPart;
result->absolute.dwHighDateTime = i1.HighPart;
return (ISC_R_SUCCESS);
}
isc_result_t
isc_time_subtract(isc_time_t *t, isc_interval_t *i, isc_time_t *result) {
ULARGE_INTEGER i1;
REQUIRE(t != NULL && i != NULL && result != NULL);
i1.LowPart = t->absolute.dwLowDateTime;
i1.HighPart = t->absolute.dwHighDateTime;
if (i1.QuadPart < (unsigned __int64) i->interval)
return (ISC_R_RANGE);
i1.QuadPart -= i->interval;
result->absolute.dwLowDateTime = i1.LowPart;
result->absolute.dwHighDateTime = i1.HighPart;
return (ISC_R_SUCCESS);
}
isc_uint64_t
isc_time_microdiff(isc_time_t *t1, isc_time_t *t2) {
ULARGE_INTEGER i1, i2;
LONGLONG i3;
REQUIRE(t1 != NULL && t2 != NULL);
i1.LowPart = t1->absolute.dwLowDateTime;
i1.HighPart = t1->absolute.dwHighDateTime;
i2.LowPart = t2->absolute.dwLowDateTime;
i2.HighPart = t2->absolute.dwHighDateTime;
if (i1.QuadPart <= i2.QuadPart)
return (0);
i3 = (i1.QuadPart - i2.QuadPart) / 10;
return (i3);
}
isc_uint32_t
isc_time_nanoseconds(isc_time_t *t) {
SYSTEMTIME st;
FileTimeToSystemTime(&t->absolute, &st);
return ((isc_uint32_t)(st.wMilliseconds * 1000000));
}
void
isc_time_formattimestamp(const isc_time_t *t, char *buf, unsigned int len) {
FILETIME localft;
SYSTEMTIME st;
static const char badtime[] = "Bad 00 99:99:99.999";
static const char *months[] = {
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
};
REQUIRE(len > 0);
if (FileTimeToLocalFileTime(&t->absolute, &localft) &&
FileTimeToSystemTime(&localft, &st))
{
snprintf(buf, len, "%s %2u %02u:%02u:%02u.%03u",
months[st.wMonth - 1], st.wDay, st.wHour, st.wMinute,
st.wSecond, st.wMilliseconds);
} else {
snprintf(buf, len, badtime);
}
}