In the Unix version, arrange for sigcheck() to be called via

gvanrossum · gvanrossum · commit ad74fa667470 · 1997-01-21T06:00:33.000Z
Py_AddPendingCall().  This avoids having to call sigcheck() in the
ticker code in ceval.c's main interpreter loop.
diff --git a/Parser/intrcheck.c b/Parser/intrcheck.c
@@ -137,6 +137,8 @@ PyErr_SetInterrupt()
 	interrupted = 1;
 }
 
+extern int sigcheck();
+
 /* ARGSUSED */
 static RETSIGTYPE
 #ifdef _M_IX86
@@ -161,6 +163,7 @@ intcatcher(sig)
 		break;
 	}
 	signal(SIGINT, intcatcher);
+	Py_AddPendingCall(sigcheck, NULL);
 }
 
 void

Original file line number	Diff line number	Diff line change
`@@ -137,6 +137,8 @@ PyErr_SetInterrupt()`
`137`	`137`	`interrupted = 1;`
`138`	`138`	`}`
`139`	`139`
	`140`	`+extern int sigcheck();`
	`141`	`+`
`140`	`142`	`/* ARGSUSED */`
`141`	`143`	`static RETSIGTYPE`
`142`	`144`	`#ifdef _M_IX86`
`@@ -161,6 +163,7 @@ intcatcher(sig)`
`161`	`163`	`break;`
`162`	`164`	`}`
`163`	`165`	`signal(SIGINT, intcatcher);`
	`166`	`+ Py_AddPendingCall(sigcheck, NULL);`
`164`	`167`	`}`
`165`	`168`
`166`	`169`	`void`