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  • Committer: Alexandros Frantzis
  • Date: 2011-12-05 12:20:15 UTC
  • Revision ID: alexandros.frantzis@linaro.org-20111205122015-olr5173v5gb4pkx3
GlCompositeBenchmark: Use the first 'sh' child to get the WID.

This avoids a race condition, where sometimes we capture another, wrong xterm
child process (eg utempter).

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src/gl-composite-benchmark
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pids=""
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wids=""
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get_first_child_of_pid()
 
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get_first_sh_child_of_pid()
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{
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    ps ax -o pid,ppid | awk -v PID=$1 '$2 == PID { print $1; exit }'
 
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    ps ax -o pid,ppid,comm | awk -v PID=$1 '$2 == PID && $3 == "sh" { print $1; exit }'
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}
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get_wid_from_pid()
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    _child_pid=
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    while [ -z "$_wid" ]; do
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        if [ -z "$_child_pid" ]; then
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            _child_pid=$(get_first_child_of_pid $1)
 
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            _child_pid=$(get_first_sh_child_of_pid $1)
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        fi
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        if [ -n "$_child_pid" ]; then
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            _wid=$(get_wid_from_pid $_child_pid)