output is not redirected when ps_mem is killed

ps_mem.py

@@ -78,6 +78,7 @@ import time
 import errno
 import os
 import sys
+import io
 
 # The following exits cleanly on Ctrl-C or EPIPE
 # while treating other exceptions as before.
@@ -100,6 +101,16 @@ our_pid = os.getpid()
 
 have_pss = 0
 
+class Unbuffered(io.TextIOBase):
+   def __init__(self, stream):
+       super().__init__()
+       self.stream = stream
+   def write(self, data):
+       self.stream.write(data)
+       self.stream.flush()
+   def close(self):
+       self.stream.close()
+
 class Proc:
     def __init__(self):
         uname = os.uname()
@@ -245,7 +256,7 @@ def getMemStats(pid):
 
 def getCmdName(pid, split_args):
     cmdline = proc.open(pid, 'cmdline').read().split("\0")
-    if cmdline[-1] == '' and len(cmdline) > 1:
+    while cmdline[-1] == '' and len(cmdline) > 1:
         cmdline = cmdline[:-1]
 
     path = proc.path(pid, 'exe')
@@ -454,6 +465,9 @@ def verify_environment():
             raise
 
 def main():
+    sys.stdout = Unbuffered(sys.stdout)
+    sys.stderr = Unbuffered(sys.stderr)
+
     split_args, pids_to_show, watch, only_total = parse_options()
     verify_environment()
 

ps_mem.spec

@@ -1,7 +1,7 @@
 
 Name:           ps_mem
 Version:        3.6
-Release:        15%{?dist}
+Release:        16%{?dist}
 Summary:        Memory profiling tool
 License:        LGPLv2
 URL:            https://github.com/pixelb/ps_mem
@@ -46,6 +46,12 @@ install -Dpm644 %{name}.1 %{buildroot}%{_mandir}/man1/%{name}.1
 
 
 %changelog
+* Wed Feb 02 2022 Jan Rybar <jrybar@redhat.com> - 3.6-16
+- output is not redirected when ps_mem is killed
+- cmdline unwanted blank spaces fixed
+- Resolves: rhbz#2033997
+- Resolves: rhbz#2049743
+
 * Tue Aug 10 2021 Mohan Boddu <mboddu@redhat.com> - 3.6-15
 - Rebuilt for IMA sigs, glibc 2.34, aarch64 flags
   Related: rhbz#1991688