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Kirill Tkhai 735461e1bf files: Implement {set,clear,wait}_fds_event() 
The idea is symilar to kernel's wake_up() and wait_event().
One task needs some event. It checks the event has not
happened yet (fle hasn't received, unix peer hasn't bound, etc)
and calls get_fds_event(). Other task makes the event
(sends a fle, binds the peer to a name, etc) and calls set_fds_event().

So, while there is no an event, the first task is sleeping,
and the second wakes it up later:

Task A:      clear_fds_event();
             if (!socket_bound)
                     wait_fds_event(); /* sleep */

Task B:      bind_socket();
             set_fds_event();         /* wake up */

For the details of using see next patches.

v5: Use bit operations.
    Split clear_fds_event from wait function.

v2: Do not wait for foreign transport sock is ready,
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>
2017-02-06 14:09:13 +03:00
contrib scripts/install-debian-packages: add libnet-dev 2017-01-16 11:04:49 +03:00
coredump coredump: Rename dir to coredump 2016-06-28 13:04:58 +03:00
crit crit/decode: set default opts['nopl'] to False 2016-05-30 13:47:54 +03:00
criu files: Implement {set,clear,wait}_fds_event() 2017-02-06 14:09:13 +03:00
Documentation crtools: close a signal descriptor after passing a preparation stage 2017-02-03 16:55:07 +03:00
images protobuf: regenerate images on Makefile changes 2017-02-03 18:04:23 +03:00
include/common files: Implement {set,clear,wait}_fds_event() 2017-02-06 14:09:13 +03:00
lib py: Fix resp.errno access 2016-12-21 11:23:02 +03:00
scripts Drop prefix from own memcpy/memset/memcmp 2017-02-06 13:29:54 +03:00
soccr soccr: add one more test to check libsoccr_save/libsoccr_restore 2017-02-01 18:41:29 +03:00
test test: check exit codes for criu page-server 2017-02-03 18:04:17 +03:00
.gitignore soccr: Generate config.h dynamically 2017-01-16 11:03:42 +03:00
.mailmap repo: Add mailmap file 2012-03-25 23:31:20 +04:00
.travis.yml travis: enable arm/arm64/ppc builds with clang 2016-12-05 11:49:19 +03:00
COPYING COPYING: fix a typo in a preamble 2016-08-11 16:18:43 +03:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
INSTALL.md Makefile.install: rm unused vars/target 2017-02-06 13:48:49 +03:00
Makefile build: only generate soccr config.h if necessary 2017-01-16 11:03:42 +03:00
Makefile.config make: Add .config file processing (v3) 2016-11-03 20:49:13 +03:00
Makefile.install Makefile.install: rm unused vars/target 2017-02-06 13:48:49 +03:00
Makefile.versions criu: Version 2.10 2017-01-16 12:06:01 +03:00
README.md Add ascciinema tour on basic criu features. 2016-06-16 16:37:06 +03:00

README.md

CRIU (Checkpoint and Restore in Userspace)

An utility to checkpoint/restore tasks. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space.

The project home is at http://criu.org.

Pages worth starting with are:

A video tour on basic CRIU features

CRIU introduction

How to contribute