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https://github.com/checkpoint-restore/criu
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a434e7f075
crtools.h is too heavy to be included in many sources Signed-off-by: Andrey Vagin <avagin@openvz.org> Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
33 lines
773 B
C
33 lines
773 B
C
#ifndef __CR_PID_H__
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#define __CR_PID_H__
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#include "stdbool.h"
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struct pid {
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/*
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* The @real pid is used to fetch tasks during dumping stage,
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* This is a global pid seen from the context where the dumping
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* is running.
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*/
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pid_t real;
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/*
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* The @virt pid is one which used in the image itself and keeps
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* the pid value to be restored. This pid fetched from the
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* dumpee context, because the dumpee might have own pid namespace.
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*/
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pid_t virt;
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};
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/*
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* When we have to restore a shared resource, we mush select which
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* task should do it, and make other(s) wait for it. In order to
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* avoid deadlocks, always make task with lower pid be the restorer.
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*/
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static inline bool pid_rst_prio(unsigned pid_a, unsigned pid_b)
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{
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return pid_a < pid_b;
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}
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#endif
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