This is a clone of https://github.com/openjdk/jdk/pull/1625 which was reviewed but not integrated before RDP1
The change is a test bug fix which can be integrated during RDP1 according to https://openjdk.java.net/jeps/3 --- Original Synopsis This fixes a bug in the test test/jdk/com/sun/jdi/EATests.java that caused timeout failures when graal is enabled. The fix is to avoid suspending all threads when a breakpoint is reached and then resume just the main thread again. This pattern was used in the test case EAMaterializeLocalAtObjectPollReturnReturn. It caused timeouts because graal threads remained suspended and, running with -Xbatch, the main thread waited (with timeout) for completion of compile tasks. The fix was applied to all breakpoints in the test. All explicit suspend calls now apply only to the main test thread and all explicit resume calls apply to all java threads. Testing: duration of the test case EAMaterializeLocalAtObjectPollReturnReturn is reduced from 30s to 10s. ------------- Commit messages: - Only main thread needs to be resumed in EARelockingObjectCurrentlyWaitingOn. - Changes based on Chris Plummer's feedback. - 8255381: com/sun/jdi/EATests.java should not suspend graal threads Changes: https://git.openjdk.java.net/jdk16/pull/7/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk16&pr=7&range=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8255381 Stats: 90 lines in 2 files changed: 34 ins; 10 del; 46 mod Patch: https://git.openjdk.java.net/jdk16/pull/7.diff Fetch: git fetch https://git.openjdk.java.net/jdk16 pull/7/head:pull/7 PR: https://git.openjdk.java.net/jdk16/pull/7
