scripts: add syslog.py

syslog.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+
+# prints the last system call log of every thread
+# (this is useful for debugging things like race conditions in userspace)
+
+import sys
+
+if len(sys.argv) != 2:
+    print(sys.argv[0] + ": usage: " + sys.argv[0] + " INPUT_FILE")
+    exit(1)
+
+file = open(sys.argv[1], "r")
+
+last_log = {} # key pid + "_" + tid
+
+for line in file:
+        if not " tid " in line:
+            continue
+
+        if not ": pid" in line:
+            continue
+
+        try:
+            junk, useful_data = line.split("syscall: pid ")
+        except:
+            try:
+                junk, useful_data = line.split("syscall return: pid ")
+            except:
+                print("pid:::", line)
+                exit()
+        try:
+            pid, useful_data = useful_data.split(" tid ")
+        except:
+            print("pid2:::", line)
+            exit()
+
+        try:
+            tid = useful_data.split(": ", 1)[0]
+        except:
+            print("tid:::", line)
+
+        last_log[str(pid) + "_" + str(tid)] = line
+
+for key in last_log:
+    if " exit:" in last_log[key]:
+        continuea
+    print(key + ":", last_log[key], end="")