fix CLI

nohang

@@ -13,13 +13,13 @@ from sre_constants import error as invalid_re
 start_time = time()
 
 
-help_mess = """usage: nohang [-h] [-v] [-t] [--ppt] [-c CONFIG]
+help_mess = """usage: nohang [-h] [-v] [-t] [-p] [-c CONFIG]
 
 optional arguments:
   -h, --help            show this help message and exit
   -v, --version         print version
   -t, --test            print some tests
-  --ppt, --print-proc-table
+  -p, --print-proc-table
                         print table of processes with their badness values
   -c CONFIG, --config CONFIG
                         path to the config file, default values:
@@ -1628,7 +1628,7 @@ elif len(argv) == 2:
         print_version()
     elif argv[1] == '--test' or argv[1] == '-t':
         test()
-    elif argv[1] == '--print-proc-table' or argv[1] == '--ppt':
+    elif argv[1] == '--print-proc-table' or argv[1] == '-p':
         print_proc_table_flag = True
         if os.path.exists('./nohang.conf'):
             config = os.getcwd() + '/nohang.conf'

nohang.1

@@ -40,7 +40,7 @@ Nohang is a highly configurable daemon for Linux which is able to correctly prev
 
   -t, --test            print some tests
 
-  --ppt, --print-proc-table
+  -p, --print-proc-table
                         print table of processes with their badness values
 
   -c CONFIG, --config CONFIG

trash/oom-trigger

@@ -3,6 +3,40 @@
 # интерактивный oom-trigger
 
 
+
+from ctypes import CDLL
+
+
+
+
+def mlockall():
+    """Lock all memory to prevent swapping nohang process."""
+
+    MCL_CURRENT = 1
+    MCL_FUTURE = 2
+    MCL_ONFAULT = 4
+
+    libc = CDLL('libc.so.6', use_errno=True)
+
+    result = libc.mlockall(
+        MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT
+    )
+    if result != 0:
+        result = libc.mlockall(
+            MCL_CURRENT | MCL_FUTURE
+        )
+        if result != 0:
+            log('Cannot lock all memory')
+        else:
+            log('All memory locked with MCL_CURRENT | MCL_FUTURE')
+    else:
+        log('All memory locked with MCL_CURRENT | MCL_FUTURE | MCL_ONFAULT')
+
+
+mlockall()
+
+
+
 from memco import *
 
 # печать показателей на этапах работы