ipc/ipdl/test/cxx/PTestRaceDeferral.ipdl@6474c204b198 (annotated)
ipc/ipdl/test/cxx/PTestRaceDeferral.ipdl
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
| michael@0 | 1 | namespace mozilla { |
| michael@0 | 2 | namespace _ipdltest { |
| michael@0 | 3 | |
| michael@0 | 4 | intr protocol PTestRaceDeferral { |
| michael@0 | 5 | parent: |
| michael@0 | 6 | intr Lose(); |
| michael@0 | 7 | |
| michael@0 | 8 | child: |
| michael@0 | 9 | async StartRace(); |
| michael@0 | 10 | intr Win(); |
| michael@0 | 11 | intr Rpc(); |
| michael@0 | 12 | async __delete__(); |
| michael@0 | 13 | |
| michael@0 | 14 | // Test that messages deferred due to race resolution are |
| michael@0 | 15 | // re-considered when the winner makes later RPCs |
| michael@0 | 16 | |
| michael@0 | 17 | // IPDL's type system can't express this protocol because the race |
| michael@0 | 18 | // resolution causes state to diverge for multiple steps, so we'll |
| michael@0 | 19 | // leave it "stateless" |
| michael@0 | 20 | /* |
| michael@0 | 21 | state START: |
| michael@0 | 22 | send StartRace goto DEFER; |
| michael@0 | 23 | state DEFER: |
| michael@0 | 24 | call Win goto PARENT; |
| michael@0 | 25 | answer Lose goto CHILD; |
| michael@0 | 26 | |
| michael@0 | 27 | state PARENT: |
| michael@0 | 28 | // 'Lose' is received here but deferred |
| michael@0 | 29 | call Rpc goto PARENT_LOSE; |
| michael@0 | 30 | state PARENT_LOSE: |
| michael@0 | 31 | // Calling 'Rpc' undefers 'Lose', and it wins the "race" with 'Rpc' |
| michael@0 | 32 | answer Lose goto DONE; |
| michael@0 | 33 | |
| michael@0 | 34 | state CHILD: |
| michael@0 | 35 | call Win goto CHILD_RPC; |
| michael@0 | 36 | state CHILD_RPC: |
| michael@0 | 37 | call Rpc goto DONE; |
| michael@0 | 38 | |
| michael@0 | 39 | state DONE: |
| michael@0 | 40 | send __delete__; |
| michael@0 | 41 | */ |
| michael@0 | 42 | }; |
| michael@0 | 43 | |
| michael@0 | 44 | } // namespace _ipdltest |
| michael@0 | 45 | } // namespace mozilla |
