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qemurunner.py: fix is_alive() to avoid confusing with recycled pid

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[YOCTO #12493]

Fixed:
- qemu started with pid 10000
- qemu exited unexpectedly
- The pid 10000 is re-used by another different process.

The is_alive() returned True in such a case because both qemu_pidfile and
/proc/10000 exist, but it's another process, this patch fixed the problem.

(From OE-Core rev: 78033af85698b4e112ae78e3140b241b1b3c06a3)

Signed-off-by: Robert Yang <liezhi.yang@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Robert Yang
2018-07-25 16:34:33 +08:00
committed by Richard Purdie
parent 18225a16a4
commit c467bc8569
1 changed files with 1 additions and 1 deletions
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meta/lib/oeqa/utils/qemurunner.py
+1 -1
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@@ -400,7 +400,7 @@ class QemuRunner:
return False return False
def is_alive(self): def is_alive(self):
if not self.runqemu: if not self.runqemu or self.runqemu.poll() is not None:
return False return False
if os.path.isfile(self.qemu_pidfile): if os.path.isfile(self.qemu_pidfile):
f = open(self.qemu_pidfile, 'r') f = open(self.qemu_pidfile, 'r')