1 files changed, 55 insertions, 0 deletions
diff --git a/testing/mozbase/mozlog/mozlog/formatters/process.py b/testing/mozbase/mozlog/mozlog/formatters/process.py
new file mode 100644
index 000000000..46030cdc7
--- /dev/null
+++ b/testing/mozbase/mozlog/mozlog/formatters/process.py
@@ -0,0 +1,55 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this
+# file, You can obtain one at http://mozilla.org/MPL/2.0/.
+
+import os
+import signal
+
+# a dict cache of signal number -> signal name
+_SIG_NAME = None
+
+
+def strsig(n):
+    """
+    Translate a process signal identifier to a human readable string.
+    """
+    global _SIG_NAME
+
+    if _SIG_NAME is None:
+        # cache signal names
+        _SIG_NAME = {}
+        for k in dir(signal):
+            if (k.startswith("SIG")
+                and not k.startswith("SIG_")
+                    and k != "SIGCLD" and k != "SIGPOLL"):
+
+                _SIG_NAME[getattr(signal, k)] = k
+
+        # Realtime signals mostly have no names
+        if hasattr(signal, "SIGRTMIN") and hasattr(signal, "SIGRTMAX"):
+            for r in range(signal.SIGRTMIN + 1, signal.SIGRTMAX + 1):
+                _SIG_NAME[r] = "SIGRTMIN+" + str(r - signal.SIGRTMIN)
+
+    if n < 0 or n >= signal.NSIG:
+        return "out-of-range signal, number %s" % n
+    try:
+        return _SIG_NAME[n]
+    except KeyError:
+        return "unrecognized signal, number %s" % n
+
+
+def strstatus(status):
+    """
+    Returns a human readable string of a process exit code, as returned
+    by the subprocess module.
+    """
+    # 'status' is the exit status
+    if os.name != 'posix':
+        # Windows error codes are easier to look up if printed in hexadecimal
+        if status < 0:
+            status += 2**32
+        return "exit %x" % status
+    elif status >= 0:
+        return "exit %d" % status
+    else:
+        return "killed by %s" % strsig(-status)