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Fixed issue #5122: Synchronize tk load failure check to prevent a

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potential deadlock.
This commit is contained in:
Guilherme Polo 2009-02-09 20:50:27 +00:00
parent 55bdb8e4ac
commit a66cf5bd04
4 changed files with 124 additions and 29 deletions
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25
Modules/tkinter.h Normal file
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#ifndef TKINTER_H
#define TKINTER_H
/* This header is used to share some macros between _tkinter.c and
* tkappinit.c */
/* TK_RELEASE_LEVEL is always one of the following:
* TCL_ALPHA_RELEASE 0
* TCL_BETA_RELEASE 1
* TCL_FINAL_RELEASE 2
*/
#define TK_VERSION_HEX ((TK_MAJOR_VERSION << 24) | \
(TK_MINOR_VERSION << 16) | \
(TK_RELEASE_SERIAL << 8) | \
(TK_RELEASE_LEVEL << 0))
/* Protect Tk 8.4.13 and older from a deadlock that happens when trying
* to load tk after a failed attempt. */
#if TK_VERSION_HEX < 0x08040e02
#define TKINTER_PROTECT_LOADTK
#define TKINTER_LOADTK_ERRMSG \
"Calling Tk_Init again after a previous call failed might deadlock"
#endif
#endif /* !TKINTER_H */