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Revert "Revert "Merge branch 'release'""

This reverts commit 67b8bb8f18f854f45a2f5ec52cc9c8a25981e2f2.

This restores the merge attempt from earlier.

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Revert "Merge branch 'release'"

This reverts commit c7fdc455dcb9a8016af0ae9bc8b4c43fde1e2d06, reversing

changes made to 9f70d52b74dbc8c71381781b6c155474031b3cf8.

The changes need a wrapper as there are API changes. Reverting for now.

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Reduce the amount of logging that is periodically emitted by an idle daemon

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De-incubate CommandLineArgumentProvider

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Dogfood native test fixtures

This commit replaces our custom test fixtures with the native "Java test fixtures".

The `TestFixturesPlugin` of our build has been simplified to leverage the native

test fixtures capabilities. Some noticeable changes:

- the `testFixtures` extension has been replaced with regular dependency declaration

- dependencies on test fixtures are now declared using the `testFixtures` keyword

- test fixtures properly declare an API and an implementation, meaning that the

implementation dependencies of test fixtures no longer leak into the compile

classpath of consumers (in particular tests)

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Change all subprojects to use 'implementation' dependencies

This includes:

- All projects now explicitly declare all dependencies to other

subprojects. This makes issues more visible, guards for accidental

addition of new dependencies, and leaks much less transitive

dependencies on the compile classpathes.

- All usages of 'runtime' to declare dependencies have been replaced

with 'runtimeOnly'

- All projects are now `java-library` (and declare this explicitly)

- Most remaining Groovy scripts are translated to Kotlin

- The old 'compile' and 'runtime' configurations are not

configured/created anymore for the 'testFixture' and 'integTest'

source sets.

- Some obsolete dependencies (see previous commits) are removed

- 'api' is used scarcely on purpose as the current project structure is

not well designed for this. The projects contain code for several

concerns of the build tool and thus putting complete projects on the

API of others exposes too much. They should be split up along

functional concerns first.

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Make more subprojects use Java 8 and remove redundant module types (#9447)

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Make Linux /proc/meminfo parser thread safe

Upgrade to new version of native-platform.

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Make totalMemory and freeMemory consistent

We were using different data sources for total and free physical

memory on Linux and MacOS, which lead us to detect memory pressure

were there was in fact none, e.g. when running in containers with

resource limits.

We now get both total and available memory from the same OS specific

data source.

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Convert `process-services` build script to Kotlin

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    • +26
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Fix handling of InterruptedExceptions

These exceptions were handled incorrectly throughout the whole

codebase, usually rethrown without restoring the interrupt status

or discarded entirely. This means that the system would not stop

executing even though the user wanted it to. In some cases this

also left the system in an inconsistent state, leading to deadlocks.

The most notable changes include:

- UncheckedException.rethrow automatically restores the interrupt status

- AsyncDispatch is guaranteed to deliver its messages, even when interrupted

- ExecHandle cancels the started process if it is interrupted while waiting

- ExecHandle disconnects from the process' output before killing it

- The worker API cancels the started work items if it is interrupted

- ManagedExecutors shut down immediately if they are interrupted while stopping

- We no longer log exceptions caused by interruption to the console

- Interrupting our caches no longer leaks file locks

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Set timeout for AbstractIntegrationSpec (#5806)

We have been bitten by CI build exection timeout for a long time.

This PR introduces timeout for AbstractIntegrationSpec in order to

monitor execution timeout. Upon timeout, a spock interceptor can

print all threads' stack traces in all JVMs so that we can diagnose

the potential issues in other JVMs (daemons, test workers, etc.).

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Introduced the property moduleType to derive source compatibility settings

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Removed almost all extra properties and extracted build environment check into plugin

- Moved extra properties into extension methods

- Created AddVerifyProductionEnvironmentTaskPlugin

- Moved build-extensions from kotlin-dsl to configuration submodule

- Created separate extensions for project groups

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Add argumentProviders for Exec task

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"coordinate" -> "coordinates"

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Move dependency constraints into a separate project

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Extract idiomatic test-fixtures plugin to buildSrc

Plugin is applied to all "groovy projects", see `groovyProject.gradle`.

The plugin configures the Project as a test fixtures producer if

`src/testFixtures` is a directory.

The plugin configures the Project as a test fixtures consumer according

to the `testFixtures` extension configuration.

No more Groovy Closure with optional parameters as a Project extra


Test-fixtures configuration rely on a Groovy DSL only feature that

allows to pass a collection of dependency notations when declaring

dependencies. The Kotlin DSL lacks this feature, see

A workaround has been put in place in `build-extensions.kt` in order to

move forward until this is properly fixed in the Kotlin DSL.

Signed-off-by: Paul Merlin <>

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Make the Classycle configuration more idiomatic

by replacing the configuration function useClassycle() as extra project

property with a plugins {} block plugin request and a project extension.

The classycle extension has two properties, one for the excludes defined

per project, the other one to reference the report resources zip.

This change will make configuring classycle from Kotlin DSL scripts


Introduce kotlin-dsl-upstream.kt in buildSrc org.gradle.kotlin.dsl

package for members missing from the Gradle Kotlin DSL intended to be

pulled upstream into the next Gradle Kotlin DSL release.

A sole extension added: reified ObjectFactory.listProperty()

Signed-off-by: Paul Merlin <>

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Some fixed to `DefaultExecHandle` to ensure listeners are notified before `waitForFinish()` completes and that exceptions thrown by the listeners are handled and forwarded to the waiting thread.

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Changed process execution infrastructure so that it no longer creates 2 threads to forward content to the process' stdin when there is nothing to forward (which is the default).

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Changed the process forking infrastructure so that it attempts to reuse threads rather than creating 3 or more threads per process that is forked.

There is now a global `ExecFactory` service that manages the infrastructure, including a pool of threads. It provides various factory methods to create instances of `ExecHandleBuilder`, `ExecAction`, `JavaExecHandleBuilder` and `JavaExecAction` backed by this infrastructure.

Replaced all direct instantiation of these types with usages of these factory methods.

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Favour declarative plugin application in build scripts

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Copy under lock, iterate out of lock

Fix `ConcurrentModificationException`

This commit adds guards around `holder` to make sure the list is not modified concurrently.

This fixes #2452, which was seen under heavy load.

Replace usages of org.gradle.api.Nullable

With javax.annotation.Nullable.

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Simplify executor relationships

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Delay memory info until first interval has passed

Add missing type safe collections setters on *ForkOptions & *ExecSpec

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