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1163 lines
35 KiB
1163 lines
35 KiB
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/* Time module */
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#include "Python.h"
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#include "structseq.h"
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#include "timefuncs.h"
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#ifdef __APPLE__
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#if defined(HAVE_GETTIMEOFDAY) && defined(HAVE_FTIME)
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/*
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* floattime falls back to ftime when getttimeofday fails because the latter
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* might fail on some platforms. This fallback is unwanted on MacOSX because
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* that makes it impossible to use a binary build on OSX 10.4 on earlier
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* releases of the OS. Therefore claim we don't support ftime.
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*/
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# undef HAVE_FTIME
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#endif
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#endif
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#include <ctype.h>
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif /* HAVE_SYS_TYPES_H */
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#ifdef QUICKWIN
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#include <io.h>
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#endif
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#ifdef HAVE_FTIME
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#include <sys/timeb.h>
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#if !defined(MS_WINDOWS) && !defined(PYOS_OS2)
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extern int ftime(struct timeb *);
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#endif /* MS_WINDOWS */
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#endif /* HAVE_FTIME */
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#if defined(__WATCOMC__) && !defined(__QNX__)
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#include <i86.h>
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#else
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#ifdef MS_WINDOWS
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#define WIN32_LEAN_AND_MEAN
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#include <windows.h>
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#include "pythread.h"
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/* helper to allow us to interrupt sleep() on Windows*/
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static HANDLE hInterruptEvent = NULL;
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static BOOL WINAPI PyCtrlHandler(DWORD dwCtrlType)
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{
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SetEvent(hInterruptEvent);
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/* allow other default handlers to be called.
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Default Python handler will setup the
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KeyboardInterrupt exception.
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*/
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return FALSE;
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}
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static long main_thread;
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#if defined(__BORLANDC__)
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/* These overrides not needed for Win32 */
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#define timezone _timezone
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#define tzname _tzname
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#define daylight _daylight
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#endif /* __BORLANDC__ */
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#endif /* MS_WINDOWS */
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#endif /* !__WATCOMC__ || __QNX__ */
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#if defined(MS_WINDOWS) && !defined(__BORLANDC__)
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/* Win32 has better clock replacement; we have our own version below. */
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#undef HAVE_CLOCK
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#endif /* MS_WINDOWS && !defined(__BORLANDC__) */
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#if defined(PYOS_OS2)
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#define INCL_DOS
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#define INCL_ERRORS
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#include <os2.h>
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#endif
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#if defined(PYCC_VACPP)
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#include <sys/time.h>
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#endif
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#ifdef __BEOS__
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#include <time.h>
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/* For bigtime_t, snooze(). - [cjh] */
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#include <support/SupportDefs.h>
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#include <kernel/OS.h>
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#endif
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#ifdef RISCOS
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extern int riscos_sleep(double);
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#endif
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/* Forward declarations */
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static int floatsleep(double);
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static double floattime(void);
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/* For Y2K check */
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static PyObject *moddict = NULL;
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/* Exposed in timefuncs.h. */
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time_t
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_PyTime_DoubleToTimet(double x)
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{
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time_t result;
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double diff;
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result = (time_t)x;
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/* How much info did we lose? time_t may be an integral or
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* floating type, and we don't know which. If it's integral,
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* we don't know whether C truncates, rounds, returns the floor,
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* etc. If we lost a second or more, the C rounding is
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* unreasonable, or the input just doesn't fit in a time_t;
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* call it an error regardless. Note that the original cast to
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* time_t can cause a C error too, but nothing we can do to
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* worm around that.
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*/
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diff = x - (double)result;
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if (diff <= -1.0 || diff >= 1.0) {
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PyErr_SetString(PyExc_ValueError,
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"timestamp out of range for platform time_t");
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result = (time_t)-1;
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}
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return result;
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}
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static PyObject *
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time_time(PyObject *self, PyObject *unused)
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{
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double secs;
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secs = floattime();
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if (secs == 0.0) {
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PyErr_SetFromErrno(PyExc_IOError);
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return NULL;
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}
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return PyFloat_FromDouble(secs);
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}
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PyDoc_STRVAR(time_doc,
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"time() -> floating point number\n\
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\n\
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Return the current time in seconds since the Epoch.\n\
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Fractions of a second may be present if the system clock provides them.");
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#ifdef HAVE_CLOCK
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#ifndef CLOCKS_PER_SEC
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#ifdef CLK_TCK
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#define CLOCKS_PER_SEC CLK_TCK
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#else
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#define CLOCKS_PER_SEC 1000000
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#endif
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#endif
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static PyObject *
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time_clock(PyObject *self, PyObject *unused)
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{
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return PyFloat_FromDouble(((double)clock()) / CLOCKS_PER_SEC);
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}
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#endif /* HAVE_CLOCK */
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#if defined(MS_WINDOWS) && !defined(__BORLANDC__)
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/* Due to Mark Hammond and Tim Peters */
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static PyObject *
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time_clock(PyObject *self, PyObject *unused)
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{
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static LARGE_INTEGER ctrStart;
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static double divisor = 0.0;
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LARGE_INTEGER now;
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double diff;
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if (divisor == 0.0) {
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LARGE_INTEGER freq;
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QueryPerformanceCounter(&ctrStart);
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if (!QueryPerformanceFrequency(&freq) || freq.QuadPart == 0) {
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/* Unlikely to happen - this works on all intel
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machines at least! Revert to clock() */
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return PyFloat_FromDouble(((double)clock()) /
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CLOCKS_PER_SEC);
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}
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divisor = (double)freq.QuadPart;
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}
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QueryPerformanceCounter(&now);
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diff = (double)(now.QuadPart - ctrStart.QuadPart);
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return PyFloat_FromDouble(diff / divisor);
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}
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#define HAVE_CLOCK /* So it gets included in the methods */
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#endif /* MS_WINDOWS && !defined(__BORLANDC__) */
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#ifdef HAVE_CLOCK
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PyDoc_STRVAR(clock_doc,
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"clock() -> floating point number\n\
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\n\
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Return the CPU time or real time since the start of the process or since\n\
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the first call to clock(). This has as much precision as the system\n\
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records.");
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#endif
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static PyObject *
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time_sleep(PyObject *self, PyObject *args)
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{
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double secs;
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if (!PyArg_ParseTuple(args, "d:sleep", &secs))
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return NULL;
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if (floatsleep(secs) != 0)
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return NULL;
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Py_INCREF(Py_None);
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return Py_None;
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}
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PyDoc_STRVAR(sleep_doc,
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"sleep(seconds)\n\
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\n\
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Delay execution for a given number of seconds. The argument may be\n\
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a floating point number for subsecond precision.");
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static PyStructSequence_Field struct_time_type_fields[] = {
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{"tm_year", "year, for example, 1993"},
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{"tm_mon", "month of year, range [1, 12]"},
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{"tm_mday", "day of month, range [1, 31]"},
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{"tm_hour", "hours, range [0, 23]"},
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{"tm_min", "minutes, range [0, 59]"},
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{"tm_sec", "seconds, range [0, 61])"},
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{"tm_wday", "day of week, range [0, 6], Monday is 0"},
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{"tm_yday", "day of year, range [1, 366]"},
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{"tm_isdst", "1 if summer time is in effect, 0 if not, and -1 if unknown"},
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{0}
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};
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static PyStructSequence_Desc struct_time_type_desc = {
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"time.struct_time",
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"The time value as returned by gmtime(), localtime(), and strptime(), and\n"
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" accepted by asctime(), mktime() and strftime(). May be considered as a\n"
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" sequence of 9 integers.\n\n"
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" Note that several fields' values are not the same as those defined by\n"
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" the C language standard for struct tm. For example, the value of the\n"
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" field tm_year is the actual year, not year - 1900. See individual\n"
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" fields' descriptions for details.",
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struct_time_type_fields,
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9,
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};
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static int initialized;
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static PyTypeObject StructTimeType;
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static PyObject *
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tmtotuple(struct tm *p)
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{
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PyObject *v = PyStructSequence_New(&StructTimeType);
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if (v == NULL)
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return NULL;
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#define SET(i,val) PyStructSequence_SET_ITEM(v, i, PyInt_FromLong((long) val))
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SET(0, p->tm_year + 1900);
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SET(1, p->tm_mon + 1); /* Want January == 1 */
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SET(2, p->tm_mday);
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SET(3, p->tm_hour);
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SET(4, p->tm_min);
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SET(5, p->tm_sec);
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SET(6, (p->tm_wday + 6) % 7); /* Want Monday == 0 */
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SET(7, p->tm_yday + 1); /* Want January, 1 == 1 */
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SET(8, p->tm_isdst);
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#undef SET
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if (PyErr_Occurred()) {
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Py_XDECREF(v);
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return NULL;
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}
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return v;
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}
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static PyObject *
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time_convert(double when, struct tm * (*function)(const time_t *))
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{
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struct tm *p;
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time_t whent = _PyTime_DoubleToTimet(when);
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if (whent == (time_t)-1 && PyErr_Occurred())
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return NULL;
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errno = 0;
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p = function(&whent);
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if (p == NULL) {
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#ifdef EINVAL
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if (errno == 0)
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errno = EINVAL;
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#endif
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return PyErr_SetFromErrno(PyExc_ValueError);
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}
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return tmtotuple(p);
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}
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/* Parse arg tuple that can contain an optional float-or-None value;
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format needs to be "|O:name".
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Returns non-zero on success (parallels PyArg_ParseTuple).
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*/
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static int
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parse_time_double_args(PyObject *args, char *format, double *pwhen)
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{
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PyObject *ot = NULL;
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if (!PyArg_ParseTuple(args, format, &ot))
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return 0;
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if (ot == NULL || ot == Py_None)
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*pwhen = floattime();
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else {
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double when = PyFloat_AsDouble(ot);
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if (PyErr_Occurred())
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return 0;
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*pwhen = when;
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}
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return 1;
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}
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static PyObject *
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time_gmtime(PyObject *self, PyObject *args)
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{
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double when;
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if (!parse_time_double_args(args, "|O:gmtime", &when))
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return NULL;
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return time_convert(when, gmtime);
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}
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PyDoc_STRVAR(gmtime_doc,
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"gmtime([seconds]) -> (tm_year, tm_mon, tm_mday, tm_hour, tm_min,\n\
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tm_sec, tm_wday, tm_yday, tm_isdst)\n\
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\n\
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Convert seconds since the Epoch to a time tuple expressing UTC (a.k.a.\n\
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GMT). When 'seconds' is not passed in, convert the current time instead.");
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static PyObject *
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time_localtime(PyObject *self, PyObject *args)
|
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{
|
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double when;
|
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if (!parse_time_double_args(args, "|O:localtime", &when))
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return NULL;
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return time_convert(when, localtime);
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}
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PyDoc_STRVAR(localtime_doc,
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"localtime([seconds]) -> (tm_year,tm_mon,tm_mday,tm_hour,tm_min,\n\
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tm_sec,tm_wday,tm_yday,tm_isdst)\n\
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\n\
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Convert seconds since the Epoch to a time tuple expressing local time.\n\
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When 'seconds' is not passed in, convert the current time instead.");
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|
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static int
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gettmarg(PyObject *args, struct tm *p)
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{
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int y;
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memset((void *) p, '\0', sizeof(struct tm));
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if (!PyArg_Parse(args, "(iiiiiiiii)",
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&y,
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&p->tm_mon,
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&p->tm_mday,
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&p->tm_hour,
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&p->tm_min,
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&p->tm_sec,
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&p->tm_wday,
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&p->tm_yday,
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&p->tm_isdst))
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return 0;
|
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if (y < 1900) {
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PyObject *accept = PyDict_GetItemString(moddict,
|
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"accept2dyear");
|
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if (accept == NULL || !PyInt_Check(accept) ||
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PyInt_AsLong(accept) == 0) {
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PyErr_SetString(PyExc_ValueError,
|
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"year >= 1900 required");
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return 0;
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}
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if (69 <= y && y <= 99)
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y += 1900;
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else if (0 <= y && y <= 68)
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y += 2000;
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else {
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PyErr_SetString(PyExc_ValueError,
|
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"year out of range");
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return 0;
|
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}
|
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}
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p->tm_year = y - 1900;
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p->tm_mon--;
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p->tm_wday = (p->tm_wday + 1) % 7;
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p->tm_yday--;
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return 1;
|
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}
|
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|
|
/* Check values of the struct tm fields before it is passed to strftime() and
|
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* asctime(). Return 1 if all values are valid, otherwise set an exception
|
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* and returns 0.
|
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*/
|
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static int
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checktm(struct tm* buf)
|
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{
|
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/* Checks added to make sure strftime() and asctime() does not crash Python by
|
|
indexing blindly into some array for a textual representation
|
|
by some bad index (fixes bug #897625 and #6608).
|
|
|
|
Also support values of zero from Python code for arguments in which
|
|
that is out of range by forcing that value to the lowest value that
|
|
is valid (fixed bug #1520914).
|
|
|
|
Valid ranges based on what is allowed in struct tm:
|
|
|
|
- tm_year: [0, max(int)] (1)
|
|
- tm_mon: [0, 11] (2)
|
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- tm_mday: [1, 31]
|
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- tm_hour: [0, 23]
|
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- tm_min: [0, 59]
|
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- tm_sec: [0, 60]
|
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- tm_wday: [0, 6] (1)
|
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- tm_yday: [0, 365] (2)
|
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- tm_isdst: [-max(int), max(int)]
|
|
|
|
(1) gettmarg() handles bounds-checking.
|
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(2) Python's acceptable range is one greater than the range in C,
|
|
thus need to check against automatic decrement by gettmarg().
|
|
*/
|
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if (buf->tm_mon == -1)
|
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buf->tm_mon = 0;
|
|
else if (buf->tm_mon < 0 || buf->tm_mon > 11) {
|
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PyErr_SetString(PyExc_ValueError, "month out of range");
|
|
return 0;
|
|
}
|
|
if (buf->tm_mday == 0)
|
|
buf->tm_mday = 1;
|
|
else if (buf->tm_mday < 0 || buf->tm_mday > 31) {
|
|
PyErr_SetString(PyExc_ValueError, "day of month out of range");
|
|
return 0;
|
|
}
|
|
if (buf->tm_hour < 0 || buf->tm_hour > 23) {
|
|
PyErr_SetString(PyExc_ValueError, "hour out of range");
|
|
return 0;
|
|
}
|
|
if (buf->tm_min < 0 || buf->tm_min > 59) {
|
|
PyErr_SetString(PyExc_ValueError, "minute out of range");
|
|
return 0;
|
|
}
|
|
if (buf->tm_sec < 0 || buf->tm_sec > 61) {
|
|
PyErr_SetString(PyExc_ValueError, "seconds out of range");
|
|
return 0;
|
|
}
|
|
/* tm_wday does not need checking of its upper-bound since taking
|
|
``% 7`` in gettmarg() automatically restricts the range. */
|
|
if (buf->tm_wday < 0) {
|
|
PyErr_SetString(PyExc_ValueError, "day of week out of range");
|
|
return 0;
|
|
}
|
|
if (buf->tm_yday == -1)
|
|
buf->tm_yday = 0;
|
|
else if (buf->tm_yday < 0 || buf->tm_yday > 365) {
|
|
PyErr_SetString(PyExc_ValueError, "day of year out of range");
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
#ifdef HAVE_STRFTIME
|
|
static PyObject *
|
|
time_strftime(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *tup = NULL;
|
|
struct tm buf;
|
|
const char *fmt;
|
|
size_t fmtlen, buflen;
|
|
char *outbuf = 0;
|
|
size_t i;
|
|
|
|
memset((void *) &buf, '\0', sizeof(buf));
|
|
|
|
if (!PyArg_ParseTuple(args, "s|O:strftime", &fmt, &tup))
|
|
return NULL;
|
|
|
|
if (tup == NULL) {
|
|
time_t tt = time(NULL);
|
|
buf = *localtime(&tt);
|
|
} else if (!gettmarg(tup, &buf)
|
|
|| !checktm(&buf)) {
|
|
return NULL;
|
|
}
|
|
|
|
/* Checks added to make sure strftime() does not crash Python by
|
|
indexing blindly into some array for a textual representation
|
|
by some bad index (fixes bug #897625).
|
|
|
|
Also support values of zero from Python code for arguments in which
|
|
that is out of range by forcing that value to the lowest value that
|
|
is valid (fixed bug #1520914).
|
|
|
|
Valid ranges based on what is allowed in struct tm:
|
|
|
|
- tm_year: [0, max(int)] (1)
|
|
- tm_mon: [0, 11] (2)
|
|
- tm_mday: [1, 31]
|
|
- tm_hour: [0, 23]
|
|
- tm_min: [0, 59]
|
|
- tm_sec: [0, 60]
|
|
- tm_wday: [0, 6] (1)
|
|
- tm_yday: [0, 365] (2)
|
|
- tm_isdst: [-max(int), max(int)]
|
|
|
|
(1) gettmarg() handles bounds-checking.
|
|
(2) Python's acceptable range is one greater than the range in C,
|
|
thus need to check against automatic decrement by gettmarg().
|
|
*/
|
|
if (buf.tm_mon == -1)
|
|
buf.tm_mon = 0;
|
|
else if (buf.tm_mon < 0 || buf.tm_mon > 11) {
|
|
PyErr_SetString(PyExc_ValueError, "month out of range");
|
|
return NULL;
|
|
}
|
|
if (buf.tm_mday == 0)
|
|
buf.tm_mday = 1;
|
|
else if (buf.tm_mday < 0 || buf.tm_mday > 31) {
|
|
PyErr_SetString(PyExc_ValueError, "day of month out of range");
|
|
return NULL;
|
|
}
|
|
if (buf.tm_hour < 0 || buf.tm_hour > 23) {
|
|
PyErr_SetString(PyExc_ValueError, "hour out of range");
|
|
return NULL;
|
|
}
|
|
if (buf.tm_min < 0 || buf.tm_min > 59) {
|
|
PyErr_SetString(PyExc_ValueError, "minute out of range");
|
|
return NULL;
|
|
}
|
|
if (buf.tm_sec < 0 || buf.tm_sec > 61) {
|
|
PyErr_SetString(PyExc_ValueError, "seconds out of range");
|
|
return NULL;
|
|
}
|
|
/* tm_wday does not need checking of its upper-bound since taking
|
|
``% 7`` in gettmarg() automatically restricts the range. */
|
|
if (buf.tm_wday < 0) {
|
|
PyErr_SetString(PyExc_ValueError, "day of week out of range");
|
|
return NULL;
|
|
}
|
|
if (buf.tm_yday == -1)
|
|
buf.tm_yday = 0;
|
|
else if (buf.tm_yday < 0 || buf.tm_yday > 365) {
|
|
PyErr_SetString(PyExc_ValueError, "day of year out of range");
|
|
return NULL;
|
|
}
|
|
/* Normalize tm_isdst just in case someone foolishly implements %Z
|
|
based on the assumption that tm_isdst falls within the range of
|
|
[-1, 1] */
|
|
if (buf.tm_isdst < -1)
|
|
buf.tm_isdst = -1;
|
|
else if (buf.tm_isdst > 1)
|
|
buf.tm_isdst = 1;
|
|
|
|
#ifdef MS_WINDOWS
|
|
/* check that the format string contains only valid directives */
|
|
for(outbuf = strchr(fmt, '%');
|
|
outbuf != NULL;
|
|
outbuf = strchr(outbuf+2, '%'))
|
|
{
|
|
if (outbuf[1]=='#')
|
|
++outbuf; /* not documented by python, */
|
|
if (outbuf[1]=='\0' ||
|
|
!strchr("aAbBcdHIjmMpSUwWxXyYzZ%", outbuf[1]))
|
|
{
|
|
PyErr_SetString(PyExc_ValueError, "Invalid format string");
|
|
return 0;
|
|
}
|
|
}
|
|
#endif
|
|
|
|
fmtlen = strlen(fmt);
|
|
|
|
/* I hate these functions that presume you know how big the output
|
|
* will be ahead of time...
|
|
*/
|
|
for (i = 1024; ; i += i) {
|
|
outbuf = (char *)malloc(i);
|
|
if (outbuf == NULL) {
|
|
return PyErr_NoMemory();
|
|
}
|
|
buflen = strftime(outbuf, i, fmt, &buf);
|
|
if (buflen > 0 || i >= 256 * fmtlen) {
|
|
/* If the buffer is 256 times as long as the format,
|
|
it's probably not failing for lack of room!
|
|
More likely, the format yields an empty result,
|
|
e.g. an empty format, or %Z when the timezone
|
|
is unknown. */
|
|
PyObject *ret;
|
|
ret = PyString_FromStringAndSize(outbuf, buflen);
|
|
free(outbuf);
|
|
return ret;
|
|
}
|
|
free(outbuf);
|
|
#if defined _MSC_VER && _MSC_VER >= 1400 && defined(__STDC_SECURE_LIB__)
|
|
/* VisualStudio .NET 2005 does this properly */
|
|
if (buflen == 0 && errno == EINVAL) {
|
|
PyErr_SetString(PyExc_ValueError, "Invalid format string");
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
}
|
|
}
|
|
|
|
PyDoc_STRVAR(strftime_doc,
|
|
"strftime(format[, tuple]) -> string\n\
|
|
\n\
|
|
Convert a time tuple to a string according to a format specification.\n\
|
|
See the library reference manual for formatting codes. When the time tuple\n\
|
|
is not present, current time as returned by localtime() is used.");
|
|
#endif /* HAVE_STRFTIME */
|
|
|
|
static PyObject *
|
|
time_strptime(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *strptime_module = PyImport_ImportModuleNoBlock("_strptime");
|
|
PyObject *strptime_result;
|
|
|
|
if (!strptime_module)
|
|
return NULL;
|
|
strptime_result = PyObject_CallMethod(strptime_module,
|
|
"_strptime_time", "O", args);
|
|
Py_DECREF(strptime_module);
|
|
return strptime_result;
|
|
}
|
|
|
|
PyDoc_STRVAR(strptime_doc,
|
|
"strptime(string, format) -> struct_time\n\
|
|
\n\
|
|
Parse a string to a time tuple according to a format specification.\n\
|
|
See the library reference manual for formatting codes (same as strftime()).");
|
|
|
|
|
|
static PyObject *
|
|
_asctime(struct tm *timeptr)
|
|
{
|
|
/* Inspired by Open Group reference implementation available at
|
|
* http://pubs.opengroup.org/onlinepubs/009695399/functions/asctime.html */
|
|
static const char wday_name[7][4] = {
|
|
"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
|
|
};
|
|
static const char mon_name[12][4] = {
|
|
"Jan", "Feb", "Mar", "Apr", "May", "Jun",
|
|
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"
|
|
};
|
|
PyObject *unicode, *str;
|
|
/* PyString_FromString() cannot be used because it doesn't support %3d */
|
|
unicode = PyUnicode_FromFormat(
|
|
"%s %s%3d %.2d:%.2d:%.2d %d",
|
|
wday_name[timeptr->tm_wday],
|
|
mon_name[timeptr->tm_mon],
|
|
timeptr->tm_mday, timeptr->tm_hour,
|
|
timeptr->tm_min, timeptr->tm_sec,
|
|
1900 + timeptr->tm_year);
|
|
if (unicode == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
str = PyUnicode_AsASCIIString(unicode);
|
|
Py_DECREF(unicode);
|
|
return str;
|
|
}
|
|
|
|
static PyObject *
|
|
time_asctime(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *tup = NULL;
|
|
struct tm buf;
|
|
if (!PyArg_UnpackTuple(args, "asctime", 0, 1, &tup))
|
|
return NULL;
|
|
if (tup == NULL) {
|
|
time_t tt = time(NULL);
|
|
buf = *localtime(&tt);
|
|
} else if (!gettmarg(tup, &buf)
|
|
|| !checktm(&buf)) {
|
|
return NULL;
|
|
}
|
|
return _asctime(&buf);
|
|
}
|
|
|
|
PyDoc_STRVAR(asctime_doc,
|
|
"asctime([tuple]) -> string\n\
|
|
\n\
|
|
Convert a time tuple to a string, e.g. 'Sat Jun 06 16:26:11 1998'.\n\
|
|
When the time tuple is not present, current time as returned by localtime()\n\
|
|
is used.");
|
|
|
|
static PyObject *
|
|
time_ctime(PyObject *self, PyObject *args)
|
|
{
|
|
PyObject *ot = NULL;
|
|
time_t tt;
|
|
struct tm *buf;
|
|
|
|
if (!PyArg_UnpackTuple(args, "ctime", 0, 1, &ot))
|
|
return NULL;
|
|
if (ot == NULL || ot == Py_None)
|
|
tt = time(NULL);
|
|
else {
|
|
double dt = PyFloat_AsDouble(ot);
|
|
if (PyErr_Occurred())
|
|
return NULL;
|
|
tt = _PyTime_DoubleToTimet(dt);
|
|
if (tt == (time_t)-1 && PyErr_Occurred())
|
|
return NULL;
|
|
}
|
|
buf = localtime(&tt);
|
|
if (buf == NULL) {
|
|
#ifdef EINVAL
|
|
if (errno == 0) {
|
|
errno = EINVAL;
|
|
}
|
|
#endif
|
|
return PyErr_SetFromErrno(PyExc_ValueError);
|
|
}
|
|
return _asctime(buf);
|
|
}
|
|
|
|
PyDoc_STRVAR(ctime_doc,
|
|
"ctime(seconds) -> string\n\
|
|
\n\
|
|
Convert a time in seconds since the Epoch to a string in local time.\n\
|
|
This is equivalent to asctime(localtime(seconds)). When the time tuple is\n\
|
|
not present, current time as returned by localtime() is used.");
|
|
|
|
#ifdef HAVE_MKTIME
|
|
static PyObject *
|
|
time_mktime(PyObject *self, PyObject *tup)
|
|
{
|
|
struct tm buf;
|
|
time_t tt;
|
|
if (!gettmarg(tup, &buf))
|
|
return NULL;
|
|
buf.tm_wday = -1; /* sentinel; original value ignored */
|
|
tt = mktime(&buf);
|
|
/* Return value of -1 does not necessarily mean an error, but tm_wday
|
|
* cannot remain set to -1 if mktime succeeded. */
|
|
if (tt == (time_t)(-1) && buf.tm_wday == -1) {
|
|
PyErr_SetString(PyExc_OverflowError,
|
|
"mktime argument out of range");
|
|
return NULL;
|
|
}
|
|
return PyFloat_FromDouble((double)tt);
|
|
}
|
|
|
|
PyDoc_STRVAR(mktime_doc,
|
|
"mktime(tuple) -> floating point number\n\
|
|
\n\
|
|
Convert a time tuple in local time to seconds since the Epoch.");
|
|
#endif /* HAVE_MKTIME */
|
|
|
|
#ifdef HAVE_WORKING_TZSET
|
|
static void inittimezone(PyObject *module);
|
|
|
|
static PyObject *
|
|
time_tzset(PyObject *self, PyObject *unused)
|
|
{
|
|
PyObject* m;
|
|
|
|
m = PyImport_ImportModuleNoBlock("time");
|
|
if (m == NULL) {
|
|
return NULL;
|
|
}
|
|
|
|
tzset();
|
|
|
|
/* Reset timezone, altzone, daylight and tzname */
|
|
inittimezone(m);
|
|
Py_DECREF(m);
|
|
|
|
Py_INCREF(Py_None);
|
|
return Py_None;
|
|
}
|
|
|
|
PyDoc_STRVAR(tzset_doc,
|
|
"tzset()\n\
|
|
\n\
|
|
Initialize, or reinitialize, the local timezone to the value stored in\n\
|
|
os.environ['TZ']. The TZ environment variable should be specified in\n\
|
|
standard Unix timezone format as documented in the tzset man page\n\
|
|
(eg. 'US/Eastern', 'Europe/Amsterdam'). Unknown timezones will silently\n\
|
|
fall back to UTC. If the TZ environment variable is not set, the local\n\
|
|
timezone is set to the systems best guess of wallclock time.\n\
|
|
Changing the TZ environment variable without calling tzset *may* change\n\
|
|
the local timezone used by methods such as localtime, but this behaviour\n\
|
|
should not be relied on.");
|
|
#endif /* HAVE_WORKING_TZSET */
|
|
|
|
static void
|
|
inittimezone(PyObject *m) {
|
|
/* This code moved from inittime wholesale to allow calling it from
|
|
time_tzset. In the future, some parts of it can be moved back
|
|
(for platforms that don't HAVE_WORKING_TZSET, when we know what they
|
|
are), and the extraneous calls to tzset(3) should be removed.
|
|
I haven't done this yet, as I don't want to change this code as
|
|
little as possible when introducing the time.tzset and time.tzsetwall
|
|
methods. This should simply be a method of doing the following once,
|
|
at the top of this function and removing the call to tzset() from
|
|
time_tzset():
|
|
|
|
#ifdef HAVE_TZSET
|
|
tzset()
|
|
#endif
|
|
|
|
And I'm lazy and hate C so nyer.
|
|
*/
|
|
#if defined(HAVE_TZNAME) && !defined(__GLIBC__) && !defined(__CYGWIN__)
|
|
tzset();
|
|
#ifdef PYOS_OS2
|
|
PyModule_AddIntConstant(m, "timezone", _timezone);
|
|
#else /* !PYOS_OS2 */
|
|
PyModule_AddIntConstant(m, "timezone", timezone);
|
|
#endif /* PYOS_OS2 */
|
|
#ifdef HAVE_ALTZONE
|
|
PyModule_AddIntConstant(m, "altzone", altzone);
|
|
#else
|
|
#ifdef PYOS_OS2
|
|
PyModule_AddIntConstant(m, "altzone", _timezone-3600);
|
|
#else /* !PYOS_OS2 */
|
|
PyModule_AddIntConstant(m, "altzone", timezone-3600);
|
|
#endif /* PYOS_OS2 */
|
|
#endif
|
|
PyModule_AddIntConstant(m, "daylight", daylight);
|
|
PyModule_AddObject(m, "tzname",
|
|
Py_BuildValue("(zz)", tzname[0], tzname[1]));
|
|
#else /* !HAVE_TZNAME || __GLIBC__ || __CYGWIN__*/
|
|
#ifdef HAVE_STRUCT_TM_TM_ZONE
|
|
{
|
|
#define YEAR ((time_t)((365 * 24 + 6) * 3600))
|
|
time_t t;
|
|
struct tm *p;
|
|
long janzone, julyzone;
|
|
char janname[10], julyname[10];
|
|
t = (time((time_t *)0) / YEAR) * YEAR;
|
|
p = localtime(&t);
|
|
janzone = -p->tm_gmtoff;
|
|
strncpy(janname, p->tm_zone ? p->tm_zone : " ", 9);
|
|
janname[9] = '\0';
|
|
t += YEAR/2;
|
|
p = localtime(&t);
|
|
julyzone = -p->tm_gmtoff;
|
|
strncpy(julyname, p->tm_zone ? p->tm_zone : " ", 9);
|
|
julyname[9] = '\0';
|
|
|
|
if( janzone < julyzone ) {
|
|
/* DST is reversed in the southern hemisphere */
|
|
PyModule_AddIntConstant(m, "timezone", julyzone);
|
|
PyModule_AddIntConstant(m, "altzone", janzone);
|
|
PyModule_AddIntConstant(m, "daylight",
|
|
janzone != julyzone);
|
|
PyModule_AddObject(m, "tzname",
|
|
Py_BuildValue("(zz)",
|
|
julyname, janname));
|
|
} else {
|
|
PyModule_AddIntConstant(m, "timezone", janzone);
|
|
PyModule_AddIntConstant(m, "altzone", julyzone);
|
|
PyModule_AddIntConstant(m, "daylight",
|
|
janzone != julyzone);
|
|
PyModule_AddObject(m, "tzname",
|
|
Py_BuildValue("(zz)",
|
|
janname, julyname));
|
|
}
|
|
}
|
|
#else
|
|
#endif /* HAVE_STRUCT_TM_TM_ZONE */
|
|
#ifdef __CYGWIN__
|
|
tzset();
|
|
PyModule_AddIntConstant(m, "timezone", _timezone);
|
|
PyModule_AddIntConstant(m, "altzone", _timezone-3600);
|
|
PyModule_AddIntConstant(m, "daylight", _daylight);
|
|
PyModule_AddObject(m, "tzname",
|
|
Py_BuildValue("(zz)", _tzname[0], _tzname[1]));
|
|
#endif /* __CYGWIN__ */
|
|
#endif /* !HAVE_TZNAME || __GLIBC__ || __CYGWIN__*/
|
|
}
|
|
|
|
|
|
static PyMethodDef time_methods[] = {
|
|
{"time", time_time, METH_NOARGS, time_doc},
|
|
#ifdef HAVE_CLOCK
|
|
{"clock", time_clock, METH_NOARGS, clock_doc},
|
|
#endif
|
|
{"sleep", time_sleep, METH_VARARGS, sleep_doc},
|
|
{"gmtime", time_gmtime, METH_VARARGS, gmtime_doc},
|
|
{"localtime", time_localtime, METH_VARARGS, localtime_doc},
|
|
{"asctime", time_asctime, METH_VARARGS, asctime_doc},
|
|
{"ctime", time_ctime, METH_VARARGS, ctime_doc},
|
|
#ifdef HAVE_MKTIME
|
|
{"mktime", time_mktime, METH_O, mktime_doc},
|
|
#endif
|
|
#ifdef HAVE_STRFTIME
|
|
{"strftime", time_strftime, METH_VARARGS, strftime_doc},
|
|
#endif
|
|
{"strptime", time_strptime, METH_VARARGS, strptime_doc},
|
|
#ifdef HAVE_WORKING_TZSET
|
|
{"tzset", time_tzset, METH_NOARGS, tzset_doc},
|
|
#endif
|
|
{NULL, NULL} /* sentinel */
|
|
};
|
|
|
|
|
|
PyDoc_STRVAR(module_doc,
|
|
"This module provides various functions to manipulate time values.\n\
|
|
\n\
|
|
There are two standard representations of time. One is the number\n\
|
|
of seconds since the Epoch, in UTC (a.k.a. GMT). It may be an integer\n\
|
|
or a floating point number (to represent fractions of seconds).\n\
|
|
The Epoch is system-defined; on Unix, it is generally January 1st, 1970.\n\
|
|
The actual value can be retrieved by calling gmtime(0).\n\
|
|
\n\
|
|
The other representation is a tuple of 9 integers giving local time.\n\
|
|
The tuple items are:\n\
|
|
year (four digits, e.g. 1998)\n\
|
|
month (1-12)\n\
|
|
day (1-31)\n\
|
|
hours (0-23)\n\
|
|
minutes (0-59)\n\
|
|
seconds (0-59)\n\
|
|
weekday (0-6, Monday is 0)\n\
|
|
Julian day (day in the year, 1-366)\n\
|
|
DST (Daylight Savings Time) flag (-1, 0 or 1)\n\
|
|
If the DST flag is 0, the time is given in the regular time zone;\n\
|
|
if it is 1, the time is given in the DST time zone;\n\
|
|
if it is -1, mktime() should guess based on the date and time.\n\
|
|
\n\
|
|
Variables:\n\
|
|
\n\
|
|
timezone -- difference in seconds between UTC and local standard time\n\
|
|
altzone -- difference in seconds between UTC and local DST time\n\
|
|
daylight -- whether local time should reflect DST\n\
|
|
tzname -- tuple of (standard time zone name, DST time zone name)\n\
|
|
\n\
|
|
Functions:\n\
|
|
\n\
|
|
time() -- return current time in seconds since the Epoch as a float\n\
|
|
clock() -- return CPU time since process start as a float\n\
|
|
sleep() -- delay for a number of seconds given as a float\n\
|
|
gmtime() -- convert seconds since Epoch to UTC tuple\n\
|
|
localtime() -- convert seconds since Epoch to local time tuple\n\
|
|
asctime() -- convert time tuple to string\n\
|
|
ctime() -- convert time in seconds to string\n\
|
|
mktime() -- convert local time tuple to seconds since Epoch\n\
|
|
strftime() -- convert time tuple to string according to format specification\n\
|
|
strptime() -- parse string to time tuple according to format specification\n\
|
|
tzset() -- change the local timezone");
|
|
|
|
|
|
PyMODINIT_FUNC
|
|
inittime(void)
|
|
{
|
|
PyObject *m;
|
|
char *p;
|
|
m = Py_InitModule3("time", time_methods, module_doc);
|
|
if (m == NULL)
|
|
return;
|
|
|
|
/* Accept 2-digit dates unless PYTHONY2K is set and non-empty */
|
|
p = Py_GETENV("PYTHONY2K");
|
|
PyModule_AddIntConstant(m, "accept2dyear", (long) (!p || !*p));
|
|
/* If an embedded interpreter is shutdown and reinitialized the old
|
|
moddict was not decrefed on shutdown and the next import of this
|
|
module leads to a leak. Conditionally decref here to prevent that.
|
|
*/
|
|
Py_XDECREF(moddict);
|
|
/* Squirrel away the module's dictionary for the y2k check */
|
|
moddict = PyModule_GetDict(m);
|
|
Py_INCREF(moddict);
|
|
|
|
/* Set, or reset, module variables like time.timezone */
|
|
inittimezone(m);
|
|
|
|
#ifdef MS_WINDOWS
|
|
/* Helper to allow interrupts for Windows.
|
|
If Ctrl+C event delivered while not sleeping
|
|
it will be ignored.
|
|
*/
|
|
main_thread = PyThread_get_thread_ident();
|
|
hInterruptEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
|
|
SetConsoleCtrlHandler( PyCtrlHandler, TRUE);
|
|
#endif /* MS_WINDOWS */
|
|
if (!initialized) {
|
|
PyStructSequence_InitType(&StructTimeType,
|
|
&struct_time_type_desc);
|
|
}
|
|
Py_INCREF(&StructTimeType);
|
|
PyModule_AddObject(m, "struct_time", (PyObject*) &StructTimeType);
|
|
initialized = 1;
|
|
}
|
|
|
|
|
|
/* Implement floattime() for various platforms */
|
|
|
|
static double
|
|
floattime(void)
|
|
{
|
|
/* There are three ways to get the time:
|
|
(1) gettimeofday() -- resolution in microseconds
|
|
(2) ftime() -- resolution in milliseconds
|
|
(3) time() -- resolution in seconds
|
|
In all cases the return value is a float in seconds.
|
|
Since on some systems (e.g. SCO ODT 3.0) gettimeofday() may
|
|
fail, so we fall back on ftime() or time().
|
|
Note: clock resolution does not imply clock accuracy! */
|
|
#ifdef HAVE_GETTIMEOFDAY
|
|
{
|
|
struct timeval t;
|
|
#ifdef GETTIMEOFDAY_NO_TZ
|
|
if (gettimeofday(&t) == 0)
|
|
return (double)t.tv_sec + t.tv_usec*0.000001;
|
|
#else /* !GETTIMEOFDAY_NO_TZ */
|
|
if (gettimeofday(&t, (struct timezone *)NULL) == 0)
|
|
return (double)t.tv_sec + t.tv_usec*0.000001;
|
|
#endif /* !GETTIMEOFDAY_NO_TZ */
|
|
}
|
|
|
|
#endif /* !HAVE_GETTIMEOFDAY */
|
|
{
|
|
#if defined(HAVE_FTIME)
|
|
struct timeb t;
|
|
ftime(&t);
|
|
return (double)t.time + (double)t.millitm * (double)0.001;
|
|
#else /* !HAVE_FTIME */
|
|
time_t secs;
|
|
time(&secs);
|
|
return (double)secs;
|
|
#endif /* !HAVE_FTIME */
|
|
}
|
|
}
|
|
|
|
|
|
/* Implement floatsleep() for various platforms.
|
|
When interrupted (or when another error occurs), return -1 and
|
|
set an exception; else return 0. */
|
|
|
|
static int
|
|
floatsleep(double secs)
|
|
{
|
|
/* XXX Should test for MS_WINDOWS first! */
|
|
#if defined(HAVE_SELECT) && !defined(__BEOS__) && !defined(__EMX__)
|
|
struct timeval t;
|
|
double frac;
|
|
frac = fmod(secs, 1.0);
|
|
secs = floor(secs);
|
|
t.tv_sec = (long)secs;
|
|
t.tv_usec = (long)(frac*1000000.0);
|
|
Py_BEGIN_ALLOW_THREADS
|
|
if (select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t) != 0) {
|
|
#ifdef EINTR
|
|
if (errno != EINTR) {
|
|
#else
|
|
if (1) {
|
|
#endif
|
|
Py_BLOCK_THREADS
|
|
PyErr_SetFromErrno(PyExc_IOError);
|
|
return -1;
|
|
}
|
|
}
|
|
Py_END_ALLOW_THREADS
|
|
#elif defined(__WATCOMC__) && !defined(__QNX__)
|
|
/* XXX Can't interrupt this sleep */
|
|
Py_BEGIN_ALLOW_THREADS
|
|
delay((int)(secs * 1000 + 0.5)); /* delay() uses milliseconds */
|
|
Py_END_ALLOW_THREADS
|
|
#elif defined(MS_WINDOWS)
|
|
{
|
|
double millisecs = secs * 1000.0;
|
|
unsigned long ul_millis;
|
|
|
|
if (millisecs > (double)ULONG_MAX) {
|
|
PyErr_SetString(PyExc_OverflowError,
|
|
"sleep length is too large");
|
|
return -1;
|
|
}
|
|
Py_BEGIN_ALLOW_THREADS
|
|
/* Allow sleep(0) to maintain win32 semantics, and as decreed
|
|
* by Guido, only the main thread can be interrupted.
|
|
*/
|
|
ul_millis = (unsigned long)millisecs;
|
|
if (ul_millis == 0 ||
|
|
main_thread != PyThread_get_thread_ident())
|
|
Sleep(ul_millis);
|
|
else {
|
|
DWORD rc;
|
|
ResetEvent(hInterruptEvent);
|
|
rc = WaitForSingleObject(hInterruptEvent, ul_millis);
|
|
if (rc == WAIT_OBJECT_0) {
|
|
/* Yield to make sure real Python signal
|
|
* handler called.
|
|
*/
|
|
Sleep(1);
|
|
Py_BLOCK_THREADS
|
|
errno = EINTR;
|
|
PyErr_SetFromErrno(PyExc_IOError);
|
|
return -1;
|
|
}
|
|
}
|
|
Py_END_ALLOW_THREADS
|
|
}
|
|
#elif defined(PYOS_OS2)
|
|
/* This Sleep *IS* Interruptable by Exceptions */
|
|
Py_BEGIN_ALLOW_THREADS
|
|
if (DosSleep(secs * 1000) != NO_ERROR) {
|
|
Py_BLOCK_THREADS
|
|
PyErr_SetFromErrno(PyExc_IOError);
|
|
return -1;
|
|
}
|
|
Py_END_ALLOW_THREADS
|
|
#elif defined(__BEOS__)
|
|
/* This sleep *CAN BE* interrupted. */
|
|
{
|
|
if( secs <= 0.0 ) {
|
|
return;
|
|
}
|
|
|
|
Py_BEGIN_ALLOW_THREADS
|
|
/* BeOS snooze() is in microseconds... */
|
|
if( snooze( (bigtime_t)( secs * 1000.0 * 1000.0 ) ) == B_INTERRUPTED ) {
|
|
Py_BLOCK_THREADS
|
|
PyErr_SetFromErrno( PyExc_IOError );
|
|
return -1;
|
|
}
|
|
Py_END_ALLOW_THREADS
|
|
}
|
|
#elif defined(RISCOS)
|
|
if (secs <= 0.0)
|
|
return 0;
|
|
Py_BEGIN_ALLOW_THREADS
|
|
/* This sleep *CAN BE* interrupted. */
|
|
if ( riscos_sleep(secs) )
|
|
return -1;
|
|
Py_END_ALLOW_THREADS
|
|
#elif defined(PLAN9)
|
|
{
|
|
double millisecs = secs * 1000.0;
|
|
if (millisecs > (double)LONG_MAX) {
|
|
PyErr_SetString(PyExc_OverflowError, "sleep length is too large");
|
|
return -1;
|
|
}
|
|
/* This sleep *CAN BE* interrupted. */
|
|
Py_BEGIN_ALLOW_THREADS
|
|
if(sleep((long)millisecs) < 0){
|
|
Py_BLOCK_THREADS
|
|
PyErr_SetFromErrno(PyExc_IOError);
|
|
return -1;
|
|
}
|
|
Py_END_ALLOW_THREADS
|
|
}
|
|
#else
|
|
/* XXX Can't interrupt this sleep */
|
|
Py_BEGIN_ALLOW_THREADS
|
|
sleep((int)secs);
|
|
Py_END_ALLOW_THREADS
|
|
#endif
|
|
|
|
return 0;
|
|
}
|
|
|
|
/* export floattime to socketmodule.c */
|
|
PyAPI_FUNC(double)
|
|
_PyTime_FloatTime(void)
|
|
{
|
|
return floattime();
|
|
}
|