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pstree: Add task_st bit field

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(was "files: Wait transport_fd before sending a fd to peer"
and "pstree: Add task_st futex")

We are going to move to the the single per-task bit field
for notifications about file opening events. Introduce
pstree_item::task_st for that.

v5: Add FDS_EVENT_BIT description.

v2: Do not wait until a peer's socket is created
as it's guarantied by we create it before CR_STATE_FORKING.

travis-ci: success for Rework file opening scheme to make it asynchronous (rev5)
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
This commit is contained in:
Kirill Tkhai 2016-12-26 17:24:44 +03:00 • committed by Pavel Emelyanov
parent ec1f7cab91
commit 66f014d098
2 changed files with 8 additions and 0 deletions
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7
criu/include/pstree.h
View file

@ -2,6 +2,7 @@
#define __CR_PSTREE_H__
#include "common/list.h"
#include "common/lock.h"
#include "pid.h"
#include "images/core.pb-c.h"
@ -24,8 +25,14 @@ struct pstree_item {
struct pid *threads; /* array of threads */
CoreEntry **core;
TaskKobjIdsEntry *ids;
futex_t task_st;
};
enum {
FDS_EVENT_BIT = 0,
};
#define FDS_EVENT (1 << FDS_EVENT_BIT)
struct pstree_item *current;
struct rst_info;

1
criu/pstree.c
View file

@ -219,6 +219,7 @@ struct pstree_item *__alloc_pstree_item(bool rst)
item->pid->real = -1;
item->born_sid = -1;
item->pid->item = item;
futex_init(&item->task_st);
return item;
}