[OpenSPARC-T2-SAM] / sam-t2 / devtools / v8plus / man / man3 / Tcl_GetTime.3

'\"
'\" Copyright (c) 2001 by Kevin B. Kenny.
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.TH Tcl_GetTime 3 8.4 Tcl "Tcl Library Procedures"
.BS
.SH NAME
Tcl_GetTime \- get date and time
.SH SYNOPSIS
.nf
\fB#include <tcl.h>\fR
.sp
\fBTcl_GetTime\fR(\fI timePtr \fR)
.SH ARGUMENTS
.AS "Tcl_Time *" timePtr
.AP "Tcl_Time *" timePtr out
Points to memory in which to store the date and time information.
.BE
.SH DESCRIPTION
.PP
The \fBTcl_GetTime\fR function retrieves the current time as a
\fITcl_Time\fR structure in memory the caller provides.  This
structure has the following definition:
.CS
typedef struct Tcl_Time {
    long sec;
    long usec;
} Tcl_Time;
.CE
.PP
On return, the \fIsec\fR member of the structure is filled in with the
number of seconds that have elapsed since the \fIepoch:\fR the epoch
is the point in time of 00:00 UTC, 1 January 1970.  This number does
\fInot\fR count leap seconds \- an interval of one day advances it by
86400 seconds regardless of whether a leap second has been inserted.
.PP
The \fIusec\fR member of the structure is filled in with the number of
microseconds that have elapsed since the start of the second
designated by \fIsec\fR.  The Tcl library makes every effort to keep
this number as precise as possible, subject to the limitations of the
computer system.  On multiprocessor variants of Windows, this number
may be limited to the 10- or 20-ms granularity of the system clock.
(On single-processor Windows systems, the \fIusec\fR field is derived
from a performance counter and is highly precise.)
.SH "SEE ALSO"
clock
.SH KEYWORDS
date, time
Commit	Line	Data
920dae64 AT	1	'\"
	2	'\" Copyright (c) 2001 by Kevin B. Kenny.
	3	'\"
	4	'\" See the file "license.terms" for information on usage and redistribution
	5	'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
	6	'\"
	7	'\" RCS: @(#) $Id$
	8	'\"
	9	'\" The definitions below are for supplemental macros used in Tcl/Tk
	10	'\" manual entries.
	11	'\"
	12	'\" .AP type name in/out ?indent?
	13	'\" Start paragraph describing an argument to a library procedure.
	14	'\" type is type of argument (int, etc.), in/out is either "in", "out",
	15	'\" or "in/out" to describe whether procedure reads or modifies arg,
	16	'\" and indent is equivalent to second arg of .IP (shouldn't ever be
	17	'\" needed; use .AS below instead)
	18	'\"
	19	'\" .AS ?type? ?name?
	20	'\" Give maximum sizes of arguments for setting tab stops. Type and
	21	'\" name are examples of largest possible arguments that will be passed
	22	'\" to .AP later. If args are omitted, default tab stops are used.
	23	'\"
	24	'\" .BS
	25	'\" Start box enclosure. From here until next .BE, everything will be
	26	'\" enclosed in one large box.
	27	'\"
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	30	'\"
	31	'\" .CS
	32	'\" Begin code excerpt.
	33	'\"
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	35	'\" End code excerpt.
	36	'\"
	37	'\" .VS ?version? ?br?
	38	'\" Begin vertical sidebar, for use in marking newly-changed parts
	39	'\" of man pages. The first argument is ignored and used for recording
	40	'\" the version when the .VS was added, so that the sidebars can be
	41	'\" found and removed when they reach a certain age. If another argument
	42	'\" is present, then a line break is forced before starting the sidebar.
	43	'\"
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	47	'\" .DS
	48	'\" Begin an indented unfilled display.
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	51	'\" End of indented unfilled display.
	52	'\"
	53	'\" .SO
	54	'\" Start of list of standard options for a Tk widget. The
	55	'\" options follow on successive lines, in four columns separated
	56	'\" by tabs.
	57	'\"
	58	'\" .SE
	59	'\" End of list of standard options for a Tk widget.
	60	'\"
	61	'\" .OP cmdName dbName dbClass
	62	'\" Start of description of a specific option. cmdName gives the
	63	'\" option's name as specified in the class command, dbName gives
	64	'\" the option's name in the option database, and dbClass gives
65	'\" the option's class in the option database.
66	'\"
67	'\" .UL arg1 arg2
68	'\" Print arg1 underlined, then print arg2 normally.
69	'\"
70	'\" RCS: @(#) $Id: man.macros,v 1.4 2000/08/25 06:18:32 ericm Exp $
71	'\"
72	'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
73	.if t .wh -1.3i ^B
74	.nr ^l \n(.l
75	.ad b
76	'\" # Start an argument description
77	.de AP
78	.ie !"\\$4"" .TP \\$4
79	.el \{\
80	. ie !"\\$2"" .TP \\n()Cu
81	. el .TP 15
82	.\}
83	.ta \\n()Au \\n()Bu
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106	..
107	.AS Tcl_Interp Tcl_CreateInterp in/out
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132	.el \}\
133	\h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\l'\|0u-1.5n\(ul'
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176	.el \h'-1.5n'\L'\|\\n(^yu-1v'\h'\\n(^lu+3n'\L'\\n(^tu+1v-\\n(^yu'\h'\|0u'\c
177	.\}
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204	..
205	'\" # SO - start of list of standard options
206	.de SO
207	.SH "STANDARD OPTIONS"
208	.LP
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210	.ta 5.5c 11c
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212	..
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214	.de SE
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218	See the \\fBoptions\\fR manual entry for details on the standard options.
219	..
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221	.de OP
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225	Command-Line Name: \\fB\\$1\\fR
226	Database Name: \\fB\\$2\\fR
227	Database Class: \\fB\\$3\\fR
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229	.IP
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242	.de UL
243	\\$1\l'\|0\(ul'\\$2
244	..
245	.TH Tcl_GetTime 3 8.4 Tcl "Tcl Library Procedures"
246	.BS
247	.SH NAME
248	Tcl_GetTime \- get date and time
249	.SH SYNOPSIS
250	.nf
251	\fB#include <tcl.h>\fR
252	.sp
253	\fBTcl_GetTime\fR(\fI timePtr \fR)
254	.SH ARGUMENTS
255	.AS "Tcl_Time *" timePtr
256	.AP "Tcl_Time *" timePtr out
257	Points to memory in which to store the date and time information.
258	.BE
259	.SH DESCRIPTION
260	.PP
261	The \fBTcl_GetTime\fR function retrieves the current time as a
262	\fITcl_Time\fR structure in memory the caller provides. This
263	structure has the following definition:
264	.CS
265	typedef struct Tcl_Time {
266	long sec;
267	long usec;
268	} Tcl_Time;
269	.CE
270	.PP
271	On return, the \fIsec\fR member of the structure is filled in with the
272	number of seconds that have elapsed since the \fIepoch:\fR the epoch
273	is the point in time of 00:00 UTC, 1 January 1970. This number does
274	\fInot\fR count leap seconds \- an interval of one day advances it by
275	86400 seconds regardless of whether a leap second has been inserted.
276	.PP
277	The \fIusec\fR member of the structure is filled in with the number of
278	microseconds that have elapsed since the start of the second
279	designated by \fIsec\fR. The Tcl library makes every effort to keep
280	this number as precise as possible, subject to the limitations of the
281	computer system. On multiprocessor variants of Windows, this number
282	may be limited to the 10- or 20-ms granularity of the system clock.
283	(On single-processor Windows systems, the \fIusec\fR field is derived
284	from a performance counter and is highly precise.)
285	.SH "SEE ALSO"
286	clock
287	.SH KEYWORDS
288	date, time