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* Makefile: cosmetics

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* socketmodule.c: get rid of makepair(); fix makesocketaddr to fix
  broken recvfrom()
* socketmodule: get rid of getStrarg()
* ceval.h: move eval_code() to new file eval.h, so compile.h is no
  longer needed.
* ceval.c: move thread comments to ceval.h; always make save/restore
  thread functions available (for dynloaded modules)
* cdmodule.c, listobject.c: don't include compile.h
* flmodule.c: include ceval.h
* import.c: include eval.h instead of ceval.h
* cgen.py: add forground(); noport(); winopen(""); to initgl().
* bltinmodule.c, socketmodule.c, fileobject.c, posixmodule.c,
  selectmodule.c:
  adapt to threads (add BGN/END SAVE macros)
* stdwinmodule.c: adapt to threads and use a special stdwin lock.
* pythonmain.c: don't include getpythonpath().
* pythonrun.c: use BGN/END SAVE instead of direct calls; also more
  BGN/END SAVE calls etc.
* thread.c: bigger stack size for sun; change exit() to _exit()
* threadmodule.c: use BGN/END SAVE macros where possible
* timemodule.c: adapt better to threads; use BGN/END SAVE; add
  longsleep internal function if BSD_TIME; cosmetics
This commit is contained in:
Guido van Rossum 1992-08-05 19:58:53 +00:00
parent 25bec8c8dc
commit ff4949eeee
19 changed files with 382 additions and 150 deletions
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72
Include/ceval.h
View file

@ -22,10 +22,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Interface to execute compiled code */
/* This header depends on "compile.h" */
object *eval_code PROTO((codeobject *, object *, object *, object *));
/* Interface to random parts in ceval.c */
object *call_object PROTO((object *, object *));
@ -34,3 +31,70 @@ object *getlocals PROTO((void));
void printtraceback PROTO((FILE *));
void flushline PROTO((void));
/* Interface for threads.
A module that plans to do a blocking system call (or something else
that lasts a long time and doesn't touch Python data) can allow other
threads to run as follows:
...preparations here...
BGN_SAVE
...blocking system call here...
END_SAVE
...interpretr result here...
The BGN_SAVE/END_SAVE pair expands to a {}-surrounded block.
To leave the block in the middle (e.g., with return), you must insert
a line containing RET_SAVE before the return, e.g.
if (...premature_exit...) {
RET_SAVE
err_errno(IOError);
return NULL;
}
An alternative is:
RET_SAVE
if (...premature_exit...) {
err_errno(IOError);
return NULL;
}
RES_SAVE
For convenience, that the value of 'errno' is restored across
END_SAVE and RET_SAVE.
WARNING: NEVER NEST CALLS TO BGN_SAVE AND END_SAVE!!!
The function init_save_thread() should be called only from
initthread() in "threadmodule.c".
Note that not yet all candidates have been converted to use this
mechanism!
*/
extern void init_save_thread PROTO((void));
extern void *save_thread PROTO((void));
extern void restore_thread PROTO((void *));
#ifdef USE_THREAD
#define BGN_SAVE { \
void *_save; \
_save = save_thread();
#define RET_SAVE restore_thread(_save);
#define RES_SAVE _save = save_thread();
#define END_SAVE restore_thread(_save); \
}
#else /* !USE_THREAD */
#define BGN_SAVE {
#define RET_SAVE
#define RES_SAVE
#define END_SAVE }
#endif /* !USE_THREAD */