Changelog

v2.1.0 (2021-01-24)

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Fixed issues:

• BTrace support for custom JFR events #429
• Do not generate cushion methods when Indy is used #431
• Initial support of unattended mode #430

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Changelog

v2.0.3 (2020-11-07)

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Fixed issues:

• Fix variable mapper behavior in corner cases #425
• BTrace checks only first return in traced method #426

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Changelog

v2.0.2 (2020-05-24)

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Fixed issues:

• @OnMethod with @location(RETURN) and @Level causes NoSuchFieldError: $btrace$$level #419
• Traced application can deadlock on exit #417
• Cannot print info to console #416
• compiled failed with "Could not target platform: 'Java SE 11' using tool chain: 'JDK 9 (1.9)'." #404
• java.lang.VerifyError: Inconsistent stackmap frames at branch target 475 with Btrace 2.0 #401
• Unable to open socket file: target process not responding or HotSpot VM not loaded #395

Closed issues:

• Btracec compiled failure with IBM-JDK #403
• I am interested in why don't provide a method in BTraceUtils to println all fields of an object? #285
• QUESTION: How to expose Aggregation details through MBean? #270
• visible example #217
• Feature Request: Add tracing of native methods #115
• [BTRACE-78] Ability to find values of local variables when reaching specific line number using @location #25
• Can't track object creation #356
• can btrace implement hot swap？ #346
• Collect stacks from AsyncGetCallTrace #310
• Replace the legacy profiling infrastructure with HDRHistogram #297
• No console output if not in verbose mode #254
• [BTRACE-74] Make it easier to write a BTrace script which detects concurrent access to an object. #77
• [BTRACE-107] Kind.CALL event missed #70
• [BTRACE-121] Kind.CALL support for overlapping instrumentation is not optimal #69
• [BTRACE-116] Optimize access to the current BTrace runtime in the injected handler methods #68
• [BTRACE-54] Object count for instrumented classes #38

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Changelog

v2.0.1 (2020-04-19)

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Closed issues:

• Compilation fail on windows 10 x64 #413
• Wiki imports don't work with openjdk #410
• a bug in btrace script? #408
• ArrayIndexOutOfBoundsException in VariableMapper #377
• Does this support OpenJdk11? #374
• Allow attaching to a JVM by its name #402

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Changelog

2.0.0

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Implemented enhancements:

• JPMS support (Java 9, 10 and 11) #374

Fixed bugs:

• Starting 2 different Btrace processes in 1 server ran into infinite loop? #396
• ArrayIndexOutOfBoundsException in VariableMapper #377
• sometimes ctrl-c and select exit will cause jvm throw java.lang.NoSuchMethodError and crash #344
• Problematic remapping of variable slots originally taken by padding #341
• tracing using compiled script may not work #381
• btrace WARNING: java.lang.ArrayIndexOutOfBoundsException: 11818 #387

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v1.3.11.3 (2018-12-17)

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Fixed bugs:

• Stackmap frame incorrectly generated for reused variables of differing length #372

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v1.3.11.2 (2018-12-02)

Binaries also available from bintray.com

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Fixed bugs:

• Caused by: java.lang.VerifyError: Bad local variable type #262
• Relax class transformation synchronization #369
• ArrayIndexOutOfBoundsException: 8 at InstrumentingMethodVisitor.java:1337 #367
• java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.String #333

Closed issues:

• onThrow.java sample not working #370
• AllMethod regex not working #368
• Stucked when executes ./gradlew build under jdk1.7.0_80 #352

Merged pull requests:

• Refactored out the dot formatting #360 (refactormachine)
• Tracing code remotely #359 (gawaine1988)

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v1.3.11.1 (2018-09-01)

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Fixed bugs:

• Problematic remapping of variable slots originally taken by padding #341
• @location(value = Kind.ERROR) changes the execution path in case the error is catched and not thrown in code #335
• StringIndexOutOfBoundsException on 1.3.10+ #357
• Retransformation should ignore IllegalStateException if a webapp is stopped in a countainer #351
• ./gradlew buildDistribution can not resolve nebula.ospackage #350
• java.util.concurrent.ExecutionException: java.lang.IllegalArgumentException #349
• Invalid 'libs' configuration [null] #347
• Template extraction is broken for values ending with "$" #345
• NoClassDefFoundError #343
• java.lang.NoClassDefFoundError: Test$1 #332
• regex matching not working #340
• Agent defined named properties ignored for dynamically attached agents #336

Closed issues:

• Could I use btrace to track methods in sun.misc.Unsafe? #348
• How to install btrace on visualVM #342
• The lastest version code contrains errors when execute "./gradlew build" with jdk1.8.0_162 and gradle 4.7 #334
• Not able to see any stack trace related to my btrace #331
• my java script is too Bigger,can't run #325
• Location(kind = Kind.NEWARRAY) dimension always 1 #318
• how to run CRNK application with jersey Example #314
• BTraceUtils.str don't invoke toString() when instance is not in a collection. #226

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Change Log

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New Features and Improvements

• Provide JVM startup agent arguments via Sys.$(arg) #295
• Passing the class name dynamically to clazz parameter in BTrace script #298
• Invalid 'libs' argument should be detected and logged as warning #320
• BTraceUtils.printArray() should accept also primitive arrays #322
• Provide support for method parameters for CATCH, THROW and ERROR #327
• Allow specifying file extension for BTrace script packs #329

Fixed bugs:

• Impossible to build btrace with jdk1.7(jdk1.8 works fine) #323
• BTraceUtils.subtsr() parameter 'length' name is confusing #279

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