handle vanishing proceses when accessing memory

2 files changed, 7 insertions, 0 deletions

diff --git a/psutil/_psutil_windows.c b/psutil/_psutil_windows.c
index c351a2ba..aa80519e 100644
--- a/psutil/_psutil_windows.c
+++ b/psutil/_psutil_windows.c
@@ -3204,6 +3204,8 @@ void init_psutil_windows(void)
         module, "INFINITE", INFINITE);
     PyModule_AddIntConstant(
         module, "ERROR_ACCESS_DENIED", ERROR_ACCESS_DENIED);
+    PyModule_AddIntConstant(
+        module, "ERROR_PARTIAL_COPY", ERROR_PARTIAL_COPY);
 
     // set SeDebug for the current process
     psutil_set_se_debug();
diff --git a/psutil/_pswindows.py b/psutil/_pswindows.py
index 83f88765..4d39d84f 100644
--- a/psutil/_pswindows.py
+++ b/psutil/_pswindows.py
@@ -288,6 +288,11 @@ def wrap_exceptions(fun):
                 raise AccessDenied(self.pid, self._name)
             if err.errno == errno.ESRCH:
                 raise NoSuchProcess(self.pid, self._name)
+            if getattr(err, "winerror", 0) == cext.ERROR_PARTIAL_COPY:
+                if pid_exists(self.pid):
+                    raise AccessDenied(self.pid, self._name)
+                else:
+                    raise NoSuchProcess(self.pid, self._name)
             raise
     return wrapper