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IJSDK-1930 Plaform no longer increments root changes modification tracker on finish of Dumb mode

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Yann Cébron 2024-03-12 14:31:41 +01:00
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topics/appendix/api_notable/api_notable_list_2024.md
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@ -21,6 +21,9 @@ _Early Access Program_ (EAP) releases of upcoming versions are available [here](
Status bar widget for LSP servers
: Language plugins using LSP can now provide their status for [](language_server_protocol.md#status-bar-integration).
Cached Values and Dumb Mode
: Note change for [](psi_performance.md#projectRootManagerDependency).
### IntelliJ IDEA 2024.1
Unbundled plugins

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topics/basics/architectural_overview/psi_performance.md
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@ -43,3 +43,12 @@ To avoid paying this cost several times, the result of such computation can be c
Usually, [`CachedValue`](%gh-ic%/platform/core-api/src/com/intellij/psi/util/CachedValue.java) created with [`CachedValueManager`](%gh-ic%/platform/core-api/src/com/intellij/psi/util/CachedValuesManager.java) works well for this purpose.
If the information you cache depends only on a subtree of the current PSI element (and nothing else: no resolve results or other files), you can cache it in a field in your `PsiElement` implementation and drop the cache in an override of `ASTDelegatePsiElement.subtreeChanged()`.
### Using `ProjectRootManager` as Dependency
{id="projectRootManagerDependency"}
Since 2024.1, the platform no longer increments root changes modification tracker on finish of [](indexing_and_psi_stubs.md#dumb-mode).
If cached values use [`ProjectRootManager`](%gh-ic%/platform/projectModel-api/src/com/intellij/openapi/roots/ProjectRootManager.java) as dependency
(without [`PsiModificationTracker`](%gh-ic%/platform/core-api/src/com/intellij/psi/util/PsiModificationTracker.java))
and at the same time depend on [indexes](indexing_and_psi_stubs.md), a dependency on
[`DumbService`](%gh-ic%/platform/core-api/src/com/intellij/openapi/project/DumbService.kt) must be added.