Fixes issue when we try to display context while selected thread is r…

…unning pwndbg#299 (pwndbg#331)

pwndbg/proc.py

@@ -2,7 +2,8 @@
 # -*- coding: utf-8 -*-
 """
 Provides values which would be available from /proc which
-are not fulfilled by other modules.
+are not fulfilled by other modules and some process/gdb flow
+related information.
 """
 from __future__ import absolute_import
 from __future__ import division
@@ -47,6 +48,18 @@ def tid(self):
     def alive(self):
         return gdb.selected_thread() is not None
 
+    @property
+    def thread_is_stopped(self):
+        """
+        This detects whether selected thread is stopped. 
+        It is not stopped in situations when gdb is executing commands 
+        that are attached to a breakpoint by `command` command.
+
+        For more info see issue #229 ( https://github.com/pwndbg/pwndbg/issues/299 )
+        :return: Whether gdb executes commands attached to bp with `command` command.
+        """
+        return gdb.selected_thread().is_stopped()
+
     @property
     def exe(self):
         for obj in gdb.objfiles():
@@ -56,13 +69,16 @@ def exe(self):
         if self.alive:
             auxv = pwndbg.auxv.get()
             return auxv['AT_EXECFN']
+
     def OnlyWhenRunning(self, func):
         @functools.wraps(func)
         def wrapper(*a, **kw):
             if self.alive:
                 return func(*a, **kw)
+
         return wrapper
 
+
 # To prevent garbage collection
 tether = sys.modules[__name__]
 

pwndbg/prompt.py

@@ -24,7 +24,7 @@ def prompt_hook(*a):
         pwndbg.events.after_reload(start=False)
         cur = new
 
-    if pwndbg.proc.alive:
+    if pwndbg.proc.alive and pwndbg.proc.thread_is_stopped:
         prompt_hook_on_stop(*a)
 
 
@@ -33,4 +33,5 @@ def prompt_hook_on_stop(*a):
     with pwndbg.stdio.stdio:
         pwndbg.commands.context.context()
 
+
 gdb.prompt_hook = prompt_hook