Modified to allow other threads to run in a multithreaded environment.

Modules/almodule.c

@@ -30,6 +30,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 #include "import.h"
 #include "modsupport.h"
 #include "structmember.h"
+#include "ceval.h"
 
 
 /* Config objects */
@@ -274,7 +275,9 @@ al_readsamps (self, args)
 	v = newsizedstringobject ((char *)NULL, width * count);
 	if (v == NULL) return NULL;
 
+	BGN_SAVE
 	ALreadsamps (self-> ob_port, (void *) getstringvalue(v), count);
+	END_SAVE
 
 	return (v);
 }
@@ -294,7 +297,9 @@ al_writesamps (self, args)
 	c = ALgetconfig(self->ob_port);
 	width = ALgetwidth(c);
 	ALfreeconfig(c);
+	BGN_SAVE
 	ALwritesamps (self-> ob_port, (void *) buf, (long) size / width);
+	END_SAVE
 
 	INCREF (None);
 	return None;
@@ -361,6 +366,7 @@ al_getconfig (self, args)
 static struct methodlist port_methods[] = {
 	{"closeport",		al_closeport},
 	{"getfd",		al_getfd},
+        {"fileno",		al_getfd},
 	{"getfilled",		al_getfilled},
 	{"getfillable",		al_getfillable},
 	{"readsamps",		al_readsamps},

Modules/cstubs

@@ -25,6 +25,11 @@ Each definition must be contained on one line:
 		N*retval
 */
 
+/*
+ * An attempt has been made to make this module switch threads on qread
+ * calls. It is far from safe, though.
+ */
+
 #include <gl.h>
 #include <device.h>
 
@@ -32,6 +37,7 @@ Each definition must be contained on one line:
 #include "import.h"
 #include "modsupport.h"
 #include "cgensupport.h"
+#include "ceval.h"
 
 /*
 Some stubs are too complicated for the stub generator.
@@ -40,6 +46,27 @@ A line starting with '%' gives the name of the function so the stub
 generator can include it in the table of functions.
 */
 
+% qread
+
+static object *
+gl_qread(self, args)
+	object *self;
+	object *args;
+{
+	long retval;
+	short arg1 ;
+	BGN_SAVE
+	retval = qread( & arg1 );
+	END_SAVE
+	{ object *v = newtupleobject( 2 );
+	  if (v == NULL) return NULL;
+	  settupleitem(v, 0, mknewlongobject(retval));
+	  settupleitem(v, 1, mknewshortobject(arg1));
+	  return v;
+	}
+}
+
+
 /*
 varray -- an array of v.. calls.
 The argument is an array (maybe list or tuple) of points.

Modules/flmodule.c

@@ -29,6 +29,16 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
    and possibly also with previous versions.
    (You must also edit FL.py to set _v15 to 1.) */
 
+/* A half-hearted attempt has been made to allow programs using this
+ * module to exploit parallelism (through the threads module). No provisions
+ * have been made for multiple threads to use this module at the same time,
+ * though. So, a program with a forms thread and a non-forms thread will work
+ * fine but a program with two threads using forms will probably crash (unless
+ * the program takes precaution to ensure that only one thread can be in
+ * this module at any time). This will have to be fixed some time.
+ * (A fix will probably also have to synchronise with the gl module).
+ */
+
 #include "forms.h"
 
 #include "allobjects.h"
@@ -1964,7 +1974,9 @@ forms_do_or_check_forms(dummy, args, func)
 		return NULL;
 
 	for (;;) {
+	        BGN_SAVE
 		generic = (*func)();
+		END_SAVE
 		if (generic == NULL) {
 			INCREF(None);
 			return None;
@@ -2131,7 +2143,9 @@ forms_qread(self, args)
 {
 	long retval;
 	short arg1 ;
+	BGN_SAVE
 	retval = fl_qread(&arg1);
+	END_SAVE
 	{ object *v = newtupleobject(2);
 	  if (v == NULL) return NULL;
 	  settupleitem(v, 0, newintobject(retval));
@@ -2273,7 +2287,9 @@ forms_show_message(f, args)
 
         if (!getargs(args, "(sss)", &a, &b, &c)) return NULL;
 
+	BGN_SAVE
 	fl_show_message(a, b, c);
+	END_SAVE
 
 	INCREF(None);
 	return None;
@@ -2287,6 +2303,7 @@ forms_show_choice(f, args)
 	char *m1, *m2, *m3, *b1, *b2, *b3;
 	int nb;
 	char *format;
+	int rv;
 
 	if (args == NULL || !is_tupleobject(args)) {
 		err_badarg();
@@ -2314,7 +2331,10 @@ forms_show_choice(f, args)
         if (!getargs(args, format, &m1, &m2, &m3, &b1, &b2, &b3))
 		return NULL;
 
-	return newintobject(fl_show_choice(m1, m2, m3, nb, b1, b2, b3));
+	BGN_SAVE
+	rv = fl_show_choice(m1, m2, m3, nb, b1, b2, b3);
+	END_SAVE
+	return newintobject(rv);
 }
 
 static object *
@@ -2327,7 +2347,9 @@ forms_show_question(f, args)
 
         if (!getargs(args, "(sss)", &a, &b, &c)) return NULL;
 
+	BGN_SAVE
 	ret = fl_show_question(a, b, c);
+	END_SAVE
    
         return newintobject((long) ret);
 }
@@ -2342,7 +2364,9 @@ forms_show_input(f, args)
 
         if (!getstrstrarg(args, &a, &b)) return NULL;
 
+	BGN_SAVE
 	str = fl_show_input(a, b);
+	END_SAVE
 
 	if (str == NULL) {
 		INCREF(None);
@@ -2361,7 +2385,9 @@ forms_file_selector(f, args)
 
         if (!getargs(args, "(ssss)", &a, &b, &c, &d)) return NULL;
 
+	BGN_SAVE
 	str = fl_show_file_selector(a, b, c, d);
+	END_SAVE
    
 	if (str == NULL) {
 		INCREF(None);

Modules/sgimodule.c

@@ -26,6 +26,7 @@ OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
 #include "allobjects.h"
 #include "modsupport.h"
+#include "ceval.h"
 
 extern int sginap(long);
 
@@ -37,7 +38,9 @@ sgi_nap(self, args)
 	long ticks;
 	if (!getargs(args, "l", &ticks))
 		return NULL;
+	BGN_SAVE
 	sginap(ticks);
+	END_SAVE
 	INCREF(None);
 	return None;
 }