| Commit message (Collapse) | Author | Age |
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issues.
https://phabricator.kde.org/T8723
With 200MB we can both deal with the 200MB files on disk, and we could
even load all of them (the 5 databases the resource uses), into memory.
Once the open problems are resolved we should be able to bump it back to
at least 20GB.
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We'll only end up with defunctional processes that may or may not do
anything useful.
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setting it.
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Summary:
In preparation of the support for ranged queries.
Notes:
Since they are pretty similar, it could be nice to refactor `scan` and `findAllInRange` to use common 3rd function
Test Plan: This is tested in storagetest.cpp
Reviewers: cmollekopf
Tags: #sink
Differential Revision: https://phabricator.kde.org/D13066
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It's possible that we therefore went over the virtual address space
limit on windows which is 128GB.
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Or so says the compiler.
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There can only ever be one transaction using mdb_dbi_open running,
and that transaction must commit or abort before any other transaction
attempts to use mdb_dbi_open.
Use delayed dbi merging with write transactions and a temporary
transaction for read transactions.
We now protect dbi initialization with a mutex and immediately update
the sDbis hash. This assumes that the created dbis are indeed
We can still violate the only one transaction may use mdb_dbi_open rule
if we start a read-only transaction after the write transaction, before
the write transaction commits.
It does not seem to be something we actually do though.
Opening dbis on environment init is further separated out, so we don't
end up in the regular openDatabase codepath at all.
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Otherwise removal doesn't work on windows due to open file handles.
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according to the docs.
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version when creating it
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There are only a few cases where have to access the list of dbis or
environments, so we can normally get away with just read-locking.
This seems to fix a segfault that was possibly caused be an environment
being reused that has already been freed in another thread. The
read-only lock when initially retrieving the environment seems to fix
that.
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The while loop is executed at least once, so advanced is always true.
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Previsouly we would hit the maxreaders limit
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lmdb and sink deal badly with e.g. a string containing a null in the
millde as db name. Thus we try to protect better against it.
This is an actual problem we triggered: https://phabricator.kde.org/T5880
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transaction.
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Dbis can only be opened by one thread and should then
be shared accross all threads after committing the transaction
to create the dbi.
This requires us to initially open all db's, which in turn requires us
to know the correct flags.
This patch stores the flags to open each db in a separate db,
and then opens up all databases on initial start.
If a new database is created that dbi is as well shared as soon as
the transaction is committed (before the dbi is private to the
transaction).
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critical error.
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This is the initial refactoring to improve how we deal with the storage.
It does a couple of things:
* Rename Sink::Storage to Sink::Storage::DataStore to free up the
Sink::Storage namespace
* Introduce a Sink::ResourceContext to have a single object that can be
passed around containing everything that is necessary to operate on a
resource. This is a lot better than the multiple separate parameters
that we used to pass around all over the place, while still allowing
for dependency injection for tests.
* Tie storage access together using the new EntityStore that directly
works with ApplicationDomainTypes. This gives us a central place where
main storage, indexes and buffer adaptors are tied together, which
will also give us a place to implement external indexes, such as a
fulltextindex using xapian.
* Use ApplicationDomainTypes as the default way to pass around entities.
Instead of using various ways to pass around entities (buffers,
buffer adaptors, ApplicationDomainTypes), only use a single way.
The old approach was confusing, and was only done as:
* optimization; really shouldn't be necessary and otherwise I'm sure
we can find better ways to optimize ApplicationDomainType itself.
* a way to account for entities that have multiple buffers, a concept
that I no longer deem relevant.
While this commit does the bulk of the work to get there, the following
commits will refactor more stuff to get things back to normal.
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non-existing env.
...which happens if we remove the env while transactions are open.
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Instead of a single #define as debug area the new system allows for an
identifier for each debug message with the structure component.area.
The component is a dot separated identifier of the runtime component,
such as the process or the plugin.
The area is the code component, and can be as such defined at
compiletime.
The idea of this system is that it becomes possible to i.e. look at the
output of all messages in the query subsystem of a specific resource
(something that happens in the client process, but in the
resource-specific subcomponent).
The new macros are supposed to be less likely to clash with other names,
hence the new names.
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