* Temporarily require ExecCtx to be on the thread's stack for EventEngine
There's a migration path that allows us to remove this requirement
eventually, but for now it is the simplest way forward. After
`ExecCtx::Run` and `grpc_timer_*` calls have been replaced, this can be
removed.
* Flush ExecCtx on destruction to block on pending callbacks
* Refactor end2end tests to exercise each EventEngine
* fix incorrect bazel_only exclusions
* Automated change: Fix sanity tests
* microbenchmark fix
* sanitize, fix iOS flub
* Automated change: Fix sanity tests
* iOS fix
* reviewer feedback
* first pass at excluding EventEngine test expansion
Also caught a few cases where we should not test pollers, but should
test all engines. And two cases where we likely shouldn't be testing
either product.
* end2end fuzzers to be fuzzed differently via EventEngine.
* sanitize
* reviewer feedback
* remove misleading comment
* reviewer feedback: comments
* EE test_init needs to play with our build system
* fix golden file test runner
Co-authored-by: drfloob <drfloob@users.noreply.github.com>
This allows implementers to select which subset of the conformance test
suite they wish to exercise with their implementation. This was a
request from the fuchsia team, and may be useful for partial
implementations that are composed into a complete EventEngine solution.
This avoids having to do a cherry-pick import, and is harmless since
there are no dependencies yet on the EventEngine. This test will be
re-enabled shortly after both the import and related changes are
finished.
* Rename the source files for ChannelArgsEndpointConfig
Previous naming was non-descript
* generate_projects
* add missing file to BUILD, and generate_projects.sh
* correct include guards
* Reintroduce the EventEngine default factory
An application can provide an EventEngine factory function that allows
gRPC internals to create EventEngines as needed. This factory would be
used when no EventEngine is provided for some given channel or server,
and where an EventEngine otherwise could not be provided by the
application. Note that there currently is no API to provide an
EventEngine per channel or per server.
I've also deleted some previous iterations on global EventEngine and
EventEngine factory ideas. This new code lives in a public API, and
coexists with iomgr instead of being isolated to an EventEngine-specific
iomgr implementation.
* add proper namespaces, and fix description
* put factory functions in their own file (for replaceability)
* add synchronization
* generate_projects.sh
* extract event_engine_base and event_engine_factory targets
Also separate iomgr/event_engine files in the BUILD, with comments
* gpr_platform
* move all EE factory declarations to event_engine_base
Makes internal hackery easier.
* add missing deps
* reorder dep alphabetically
* comment style change
A reusable test suite for EventEngine implementations.
To exercise a custom EventEngine, simply link against :event_engine_test_suite
and provide a testing main function that sets a custom EventEngine factory:
```
#include "path/to/my_custom_event_engine.h"
#include "src/core/event_engine/test_suite/event_engine_test.h"
int main(int argc, char** argv) {
::testing::InitGoogleTest(&argc, argv);
SetEventEngineFactory(
[]() { return absl::make_unique<MyCustomEventEngine>(); });
auto result = RUN_ALL_TESTS();
return result;
}
```
This code adds an iomgr implementation that's backed by an EventEngine. This uses the EventEngine API alone, and separate work will introduce an EventEngine prototype to plug into it.
See also drfloob#1: @nicolasnoble has a pull request against this branch, implementing the libuv-based EventEngine. One goal here is to implement the iomgr code such that it can be merged independently without affecting normal builds.
This implementation can be built using bazel build --cxxopt='-DGRPC_USE_EVENT_ENGINE' :all
Some shortcuts are being taken to get a working, testable version of the engine. EventEngines are not pluggable, for example.
AJ Heller
Craig Tiller
Vignesh Babu
Tamir Duberstein