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utils: Add ability to change the process name

PATCH New Richard Purdie 1 participant 1 message Jan 29, 2016

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Richard Purdie

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PATCH 1/1 utils: Add ability to change the process name

Being able to tell the bitbake processes apart is useful for debugging. Add a helper function which allows this without making it a hard dependency. Errors are ignored, this is just nice to have.

Signed-off-by Richard Purdie <[email protected]>
bitbake/lib/bb/utils.py +11 -0
index 9a3efb2..ae10213 100644
@@ -1395,3 +1395,14 @@ def ioprio_set(who, cls, value):
             raise ValueError("Unable to set ioprio, syscall returned %s" % rc)
     else:
         bb.warn("Unable to set IO Prio for arch %s" % _unamearch)
+
+def set_process_name(name):
+    from ctypes import cdll, byref, create_string_buffer
+    # This is nice to have for debugging, not essential
+    try:
+        libc = cdll.LoadLibrary('libc.so.6')
+        buff = create_string_buffer(len(name)+1)
+        buff.value = name
+        libc.prctl(15, byref(buff), 0, 0, 0)
+    except:
+        pass