JBR-6674 Fix parallel oops iteration in dcevm redefinition

JetBrains / JetBrainsRuntime

Runtime environment based on OpenJDK for running IntelliJ Platform-based products on Windows, macOS, and Linux

GNU General Public License v2.0

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JBR-6674 Fix parallel oops iteration in dcevm redefinition #316

Closed skybber closed 6 months ago

skybber commented 6 months ago

This patch addresses unsynchronized parallel access to ChangePointersObjectClosure._tmp_obj by creating a separate instance for each thread, enhancing thread safety. Additionally, it deems parallel DCEVM iteration in G1 as redundant and removes it.