# HG changeset patch
# Parent  b382206aeb2b0859398ded149527fbea47c8ddde
bpo-29926: Send a real SIGINT to the main thread in Idle on Unix

Seems to work with normal blocking calls like “sleep” and “os.read”, and a
tight “for” loop, but does not work with “input()” or “sys.stdin.readline()”.

diff -r b382206aeb2b -r f8eebc3d6301 Lib/idlelib/run.py
--- a/Lib/idlelib/run.py	Fri Feb 03 11:08:45 2017 +0800
+++ b/Lib/idlelib/run.py	Mon Apr 03 03:16:36 2017 +0000
@@ -1,6 +1,7 @@
 import io
 import linecache
 import queue
+import signal
 import sys
 import time
 import traceback
@@ -108,7 +109,9 @@
     global exit_now
     global quitting
     global no_exitfunc
+    global main_thread
     no_exitfunc = del_exitfunc
+    main_thread = threading.get_ident()
     #time.sleep(15) # test subprocess not responding
     try:
         assert(len(sys.argv) > 1)
@@ -478,7 +481,10 @@
 
     def interrupt_the_server(self):
         if interruptable:
-            thread.interrupt_main()
+            try:  # Unix
+                signal.pthread_kill(main_thread, signal.SIGINT)
+            except AttributeError:  # Fallback on Windows
+                thread.interrupt_main()
 
     def start_the_debugger(self, gui_adap_oid):
         return debugger_r.start_debugger(self.rpchandler, gui_adap_oid)