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author | Joe Mistachkin <joe@mistachkin.com> | 2014-11-11 22:23:34 (GMT) |
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committer | Joe Mistachkin <joe@mistachkin.com> | 2014-11-11 22:23:34 (GMT) |
commit | b15c525eedc93a453dfea94482bc1198e27748fc (patch) | |
tree | 49a88f59bc168351fe802d8aa68da6d853b823aa /macosx/tkMacOSXDialog.c | |
parent | 07f85cd3c1b4934fb746ea36516ba2944b4eea11 (diff) | |
parent | ee9722cf78769c35f57383613f570b6e797e74bf (diff) | |
download | tk-b15c525eedc93a453dfea94482bc1198e27748fc.zip tk-b15c525eedc93a453dfea94482bc1198e27748fc.tar.gz tk-b15c525eedc93a453dfea94482bc1198e27748fc.tar.bz2 |
Merge updates from core 8.5 branch.
Diffstat (limited to 'macosx/tkMacOSXDialog.c')
-rw-r--r-- | macosx/tkMacOSXDialog.c | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/macosx/tkMacOSXDialog.c b/macosx/tkMacOSXDialog.c index d9e824a..bc11b96 100644 --- a/macosx/tkMacOSXDialog.c +++ b/macosx/tkMacOSXDialog.c @@ -14,6 +14,9 @@ #include "tkMacOSXPrivate.h" #include "tkFileFilter.h" +static int TkBackgroundEvalObjv(Tcl_Interp *interp, int objc, + Tcl_Obj *const *objv, int flags); + static const char *colorOptionStrings[] = { "-initialcolor", "-parent", "-title", NULL }; @@ -1057,6 +1060,68 @@ end: } /* + * ---------------------------------------------------------------------- + * + * TkBackgroundEvalObjv -- + * + * Evaluate a command while ensuring that we do not affect the + * interpreters state. This is important when evaluating script + * during background tasks. + * + * Results: + * A standard Tcl result code. + * + * Side Effects: + * The interpreters variables and code may be modified by the script + * but the result will not be modified. + * + * ---------------------------------------------------------------------- + */ + +int +TkBackgroundEvalObjv( + Tcl_Interp *interp, + int objc, + Tcl_Obj *const *objv, + int flags) +{ + Tcl_InterpState state; + int n, r = TCL_OK; + + /* + * Record the state of the interpreter. + */ + + Tcl_Preserve(interp); + state = Tcl_SaveInterpState(interp, TCL_OK); + + /* + * Evaluate the command and handle any error. + */ + + for (n = 0; n < objc; ++n) { + Tcl_IncrRefCount(objv[n]); + } + r = Tcl_EvalObjv(interp, objc, objv, flags); + for (n = 0; n < objc; ++n) { + Tcl_DecrRefCount(objv[n]); + } + if (r == TCL_ERROR) { + Tcl_AddErrorInfo(interp, "\n (background event handler)"); + Tcl_BackgroundError(interp); + } + + /* + * Restore the state of the interpreter. + */ + + (void) Tcl_RestoreInterpState(interp, state); + Tcl_Release(interp); + + return r; +} + +/* * Local Variables: * mode: objc * c-basic-offset: 4 |