[2.2] [Process] Add getPid and sendSignal methods to Process#5391

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romainneutron wants to merge 3 commits intosymfony:masterfrom

romainneutron:ProcessPid

Commits on Aug 30, 2012

[Process] Add a getPid method for process
romainneutron
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Commits on Aug 31, 2012

[Process] Add support for posix signals
romainneutron
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Commits on Sep 7, 2012

Rename sendSignal to signal, use proc_terminate instead of posix_kill
romainneutron
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