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78 commits

Author SHA1 Message Date
Niko Matsakis
880681df49 make a test for transitive cancellation 2019-01-04 13:51:10 -05:00
Niko Matsakis
e5043a5644 make sum invoke is_current_revision_canceled deterministically 2019-01-04 13:51:09 -05:00
Niko Matsakis
da3be98295 extend cancellation test 2019-01-04 13:51:07 -05:00
Aleksey Kladov
a2198f1f8a prevent untracked queries from moving brackwards in time 
If a query observes an untracked read, it gets changed_at equal to the
current revision. When we re-validate the query later, if it doesn't
do an untracked read this time, it gets changed_at equal to the
maximum of the dependencies. Crucially, this new changed_at may
be **older** then the previous value of changed_at. That is, we break
the rule that `changed_at` monotonically increases.

This can lead to missed re-executions down the line (see the added
test).

closes #66
 2018-12-30 10:54:34 +03:00
Kevin Leimkuhler
bc60b09fc7 Refactor overwrite_placeholder into PanicGuard 2018-11-01 16:53:08 -07:00
Kevin Leimkuhler
461ab22822 Change uses of fork to snapshot 2018-11-01 11:26:16 -07:00
Kevin Leimkuhler
83482293c6 Use Event API and add docs 2018-11-01 11:26:16 -07:00
Kevin Leimkuhler
5bface5bb9 Ensure parallel panic safety and add test 2018-11-01 11:26:16 -07:00
Niko Matsakis
49cc8abe43 introduce query_mut which you must use to get set methods 2018-11-01 04:53:56 -04:00
Niko Matsakis
e070bf9809 s/Frozen/Snapshot/ 2018-10-31 20:06:06 -04:00
Niko Matsakis
fc2a720ae2 s/fork/snapshot/ 2018-10-31 20:05:31 -04:00
Niko Matsakis
5066726147 panic if you fork from inside a query for now 2018-10-31 16:03:03 -04:00
Niko Matsakis
b0171dbc11 remove fork_mut and adopt new strategy 
Required simplifying the various tests.
 2018-10-31 12:01:36 -04:00
Niko Matsakis
38dc4c31dd introduce fork, which yields a frozen handle 2018-10-31 06:05:03 -04:00
Niko Matsakis
9cac418ac8 rename fork to fork_mut 2018-10-31 06:03:33 -04:00
Niko Matsakis
cf9db9cc7f fix typo 2018-10-30 20:38:41 -04:00
Niko Matsakis
e355300554 use callbacks in parallel test 2018-10-30 20:19:25 -04:00
Aleksey Kladov
f4c00cfe97 Add a stress test 2018-10-30 14:41:56 -04:00
Aleksey Kladov
f709e64bd5 Add one more cancellation test 
closes #66
 2018-10-25 17:06:55 +03:00
Niko Matsakis
c94db84945 add a test for the revision lock 2018-10-19 06:00:52 -04:00
Niko Matsakis
e348c21528 move signal into its own module 2018-10-19 06:00:44 -04:00
Niko Matsakis
e58702ebd0 replace use of await, which is a keyword in Rust 2018 2018-10-19 05:17:26 -04:00
Niko Matsakis
2359d8aa0c add a test of computing sum("abc") twice in parallel 2018-10-14 14:58:31 -04:00
Niko Matsakis
3318921717 show that executing queries on distinct keys can proceed in parallel 2018-10-13 05:45:28 -04:00
Niko Matsakis
e9fadfcfe7 add more knobs, and refactor to make that easier 2018-10-13 05:39:51 -04:00
Niko Matsakis
8da63ec029 move distinct tests into their own files to ease reading 2018-10-13 05:27:20 -04:00
Niko Matsakis
fb5ba07290 move the test setup in setup.rs 2018-10-13 05:22:38 -04:00
Niko Matsakis
8f03f3bb76 move parallel tests into a directory 2018-10-13 05:03:34 -04:00