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annotate lib/localdisplay.py @ 886:2d055bce2e60

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Xorg display number fetcher for use by xidle and dpms Ignore-this: eaef4d7fa8277e88c65d83343a46f866 darcs-hash:20130529074436-312f9-82b723dfcb487deee25ca2beab344631b09c0243
author drewp <drewp@bigasterisk.com>
date Wed, 29 May 2013 00:44:36 -0700
parents
children 9155e9a605ec
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886
2d055bce2e60 Xorg display number fetcher for use by xidle and dpms
drewp <drewp@bigasterisk.com>
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1 import psutil, os
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2
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3 def setDisplayToLocalX():
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4 """
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5 set DISPLAY env var in this process to the id of the X process on localhost
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6 """
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7 for pid in psutil.get_pid_list():
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8 try:
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9 proc = psutil.Process(pid)
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10 if proc.exe not in ['/usr/bin/Xorg', '/usr/bin/X']:
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11 continue
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12 except (psutil.error.AccessDenied, psutil.error.NoSuchProcess):
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13 continue
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14 display = proc.cmdline[1]
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15 assert display.startswith(':'), display
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16 os.environ['DISPLAY'] = display
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17 break
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18 else:
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19 raise ValueError("didn't find an Xorg process")