[OpenSPARC-T2-SAM] / sam-t2 / devtools / v9 / man / man3 / Tcl_DeleteAssocData.3

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See the \\fBoptions\\fR manual entry for details on the standard options.
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.TH Tcl_SetAssocData 3 7.5 Tcl "Tcl Library Procedures"
.BS
.SH NAME
Tcl_GetAssocData, Tcl_SetAssocData, Tcl_DeleteAssocData \- manage
associations of string keys and user specified data with Tcl
interpreters.
.SH SYNOPSIS
.nf
\fB#include <tcl.h>\fR
.sp
ClientData
\fBTcl_GetAssocData\fR(\fIinterp, key, delProcPtr\fR)
.sp
\fBTcl_SetAssocData\fR(\fIinterp, key, delProc, clientData\fR)
.sp
\fBTcl_DeleteAssocData\fR(\fIinterp, key\fR)
.SH ARGUMENTS
.AS Tcl_InterpDeleteProc *delProcPtr
.AP Tcl_Interp *interp in
Interpreter in which to execute the specified command.
.VS 8.4
.AP "CONST char" *key in
.VE
Key for association with which to store data or from which to delete or
retrieve data.  Typically the module prefix for a package.
.AP Tcl_InterpDeleteProc *delProc in
Procedure to call when \fIinterp\fR is deleted.
.AP Tcl_InterpDeleteProc **delProcPtr in
Pointer to location in which to store address of current deletion procedure
for association.  Ignored if NULL.
.AP ClientData clientData in
Arbitrary one-word value associated with the given key in this
interpreter.  This data is owned by the caller.
.BE

.SH DESCRIPTION
.PP
These procedures allow extensions to associate their own data with
a Tcl interpreter.
An association consists of a string key, typically the name of
the extension, and a one-word value, which is typically a pointer
to a data structure holding data specific to the extension.
Tcl makes no interpretation of either the key or the value for
an association.
.PP
Storage management is facilitated by storing with each association a
procedure to call when the interpreter is deleted. This
procedure can dispose of the storage occupied by the client's data in any
way it sees fit.
.PP
\fBTcl_SetAssocData\fR creates an association between a string
key and a user specified datum in the given interpreter.
If there is already an association with the given \fIkey\fR,
\fBTcl_SetAssocData\fR overwrites it with the new information.
It is up to callers to organize their use of names to avoid conflicts,
for example, by using package names as the keys.
If the \fIdeleteProc\fR argument is non-NULL it specifies the address of a
procedure to invoke if the interpreter is deleted before the association
is deleted.  \fIDeleteProc\fR should have arguments and result that match
the type \fBTcl_InterpDeleteProc\fR:
.CS
typedef void Tcl_InterpDeleteProc(
	ClientData \fIclientData\fR,
	Tcl_Interp *\fIinterp\fR);
.CE
When \fIdeleteProc\fR is invoked the \fIclientData\fR and \fIinterp\fR
arguments will be the same as the corresponding arguments passed to
\fBTcl_SetAssocData\fR.
The deletion procedure will \fInot\fR be invoked if the association
is deleted before the interpreter is deleted.
.PP
\fBTcl_GetAssocData\fR returns the datum stored in the association with the
specified key in the given interpreter, and if the \fIdelProcPtr\fR field
is non-\fBNULL\fR, the address indicated by it gets the address of the
delete procedure stored with this association. If no association with the
specified key exists in the given interpreter \fBTcl_GetAssocData\fR
returns \fBNULL\fR.
.PP
\fBTcl_DeleteAssocData\fR deletes an association with a specified key in
the given interpreter.  Then it calls the deletion procedure.
.SH KEYWORDS
association, data, deletion procedure, interpreter, key
Commit	Line	Data
920dae64 AT	1	'\"
	2	'\" Copyright (c) 1995-1996 Sun Microsystems, Inc.
	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	'\"
	8	'\" RCS: @(#) $Id: AssocData.3,v 1.4 2001/04/24 20:59:17 kennykb Exp $
	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.
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	36	'\"
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	38	'\" Begin vertical sidebar, for use in marking newly-changed parts
	39	'\" of man pages. The first argument is ignored and used for recording
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	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.
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	45	'\" End of vertical sidebar.
	46	'\"
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	48	'\" Begin an indented unfilled display.
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	51	'\" End of indented unfilled display.
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	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	'\"
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	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
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77	.de AP
78	.ie !"\\$4"" .TP \\$4
79	.el \{\
80	. ie !"\\$2"" .TP \\n()Cu
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106	..
107	.AS Tcl_Interp Tcl_CreateInterp in/out
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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
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207	.SH "STANDARD OPTIONS"
208	.LP
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218	See the \\fBoptions\\fR manual entry for details on the standard options.
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242	.de UL
243	\\$1\l'\|0\(ul'\\$2
244	..
245	.TH Tcl_SetAssocData 3 7.5 Tcl "Tcl Library Procedures"
246	.BS
247	.SH NAME
248	Tcl_GetAssocData, Tcl_SetAssocData, Tcl_DeleteAssocData \- manage
249	associations of string keys and user specified data with Tcl
250	interpreters.
251	.SH SYNOPSIS
252	.nf
253	\fB#include <tcl.h>\fR
254	.sp
255	ClientData
256	\fBTcl_GetAssocData\fR(\fIinterp, key, delProcPtr\fR)
257	.sp
258	\fBTcl_SetAssocData\fR(\fIinterp, key, delProc, clientData\fR)
259	.sp
260	\fBTcl_DeleteAssocData\fR(\fIinterp, key\fR)
261	.SH ARGUMENTS
262	.AS Tcl_InterpDeleteProc *delProcPtr
263	.AP Tcl_Interp *interp in
264	Interpreter in which to execute the specified command.
265	.VS 8.4
266	.AP "CONST char" *key in
267	.VE
268	Key for association with which to store data or from which to delete or
269	retrieve data. Typically the module prefix for a package.
270	.AP Tcl_InterpDeleteProc *delProc in
271	Procedure to call when \fIinterp\fR is deleted.
272	.AP Tcl_InterpDeleteProc **delProcPtr in
273	Pointer to location in which to store address of current deletion procedure
274	for association. Ignored if NULL.
275	.AP ClientData clientData in
276	Arbitrary one-word value associated with the given key in this
277	interpreter. This data is owned by the caller.
278	.BE
279
280	.SH DESCRIPTION
281	.PP
282	These procedures allow extensions to associate their own data with
283	a Tcl interpreter.
284	An association consists of a string key, typically the name of
285	the extension, and a one-word value, which is typically a pointer
286	to a data structure holding data specific to the extension.
287	Tcl makes no interpretation of either the key or the value for
288	an association.
289	.PP
290	Storage management is facilitated by storing with each association a
291	procedure to call when the interpreter is deleted. This
292	procedure can dispose of the storage occupied by the client's data in any
293	way it sees fit.
294	.PP
295	\fBTcl_SetAssocData\fR creates an association between a string
296	key and a user specified datum in the given interpreter.
297	If there is already an association with the given \fIkey\fR,
298	\fBTcl_SetAssocData\fR overwrites it with the new information.
299	It is up to callers to organize their use of names to avoid conflicts,
300	for example, by using package names as the keys.
301	If the \fIdeleteProc\fR argument is non-NULL it specifies the address of a
302	procedure to invoke if the interpreter is deleted before the association
303	is deleted. \fIDeleteProc\fR should have arguments and result that match
304	the type \fBTcl_InterpDeleteProc\fR:
305	.CS
306	typedef void Tcl_InterpDeleteProc(
307	ClientData \fIclientData\fR,
308	Tcl_Interp *\fIinterp\fR);
309	.CE
310	When \fIdeleteProc\fR is invoked the \fIclientData\fR and \fIinterp\fR
311	arguments will be the same as the corresponding arguments passed to
312	\fBTcl_SetAssocData\fR.
313	The deletion procedure will \fInot\fR be invoked if the association
314	is deleted before the interpreter is deleted.
315	.PP
316	\fBTcl_GetAssocData\fR returns the datum stored in the association with the
317	specified key in the given interpreter, and if the \fIdelProcPtr\fR field
318	is non-\fBNULL\fR, the address indicated by it gets the address of the
319	delete procedure stored with this association. If no association with the
320	specified key exists in the given interpreter \fBTcl_GetAssocData\fR
321	returns \fBNULL\fR.
322	.PP
323	\fBTcl_DeleteAssocData\fR deletes an association with a specified key in
324	the given interpreter. Then it calls the deletion procedure.
325	.SH KEYWORDS
326	association, data, deletion procedure, interpreter, key