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Diffstat (limited to 'doc/NRE.3')
| -rw-r--r-- | doc/NRE.3 | 19 |
1 files changed, 19 insertions, 0 deletions
@@ -227,6 +227,25 @@ int Any function comprising a routine can push other functions, making it possible implement looping and sequencing constructs using the function stack. .PP +.SH "REFERENCE COUNT MANAGEMENT" +.PP +The first \fIobjc\fR values in the \fIobjv\fR array passed to the functions +\fBTcl_NRCallObjProc\fR, \fBTcl_NREvalObjv\fR, and \fBTcl_NRCmdSwap\fR should +have a reference count of at least 1; they may have additional references +taken during the execution. +.PP +The \fIobjPtr\fR argument to \fBTcl_NREvalObj\fR and \fBTcl_NRExprObj\fR +should have a reference count of at least 1, and may have additional +references taken to it during execution. +.PP +The \fIresultObj\fR argument to \fBTcl_NRExprObj\fR should be an unshared +object. +.PP +Use \fBTcl_NRAddCallback\fR to schedule any required final decrementing of the +reference counts of arguments to any of the other functions on this page, as +with any other post-processing step in the non-recursive execution engine. +.PP +The .SH "SEE ALSO" Tcl_CreateCommand(3), Tcl_CreateObjCommand(3), Tcl_EvalObjEx(3), Tcl_GetCommandFromObj(3), Tcl_ExprObj(3) .SH KEYWORDS |