Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v7]
On Wed, 16 Feb 2022 21:39:20 GMT, Tim Prinzing wrote: >> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is >> null > > Tim Prinzing has updated the pull request with a new target base due to a > merge or a rebase. The pull request now contains 10 commits: > > - Merge master > - fix test breakage from rename > - reformat test summary > - reformat test summary > - improve test name and remove experimental test code > - fix copyright date > - More changes from feedback. > >The javadoc is improved to reflect InvalidCallerException is thrown with >a caller that can't be assigned to a ClassLoader as well as a null >caller frame. Added a test IsParallelCapableBadCaller that uses >reflection hackery to create a case where called with an invalid caller >on the call stack. > - Changes from feedback. > >- Copyright dates fixed >- IllegalCallerException thrown for no caller frame, and associated >javadoc changes >- test changed to look for IllegalCallerException thrown. > - Merge branch 'master' into JDK-8281000 > - JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Looks fine. - Marked as reviewed by bchristi (Reviewer). PR: https://git.openjdk.java.net/jdk/pull/7448
RFR: 8188073: Add Capstone as backend for hsdis
The Capstone library is a simple to use, efficient disassembly library, distributed under the MIT license. This PR implements an hsdis backend using Capstone. It has been tested on Linux, macOS and Windows (x64). The actual C implementation of the backend was done by @JornVernee. I assume there are plenty of room for enhancing this implementation, with options like in the binutils backend. Such improvements can be done later, by teams more familiar with the requirements of hsdis. - Commit messages: - Fix whitespace error (thanks, jcheck!) - Minor fixes - The pandoc-style copyright header looks bad on Github... - Turn the README into markdown format. Add documentation on building Capstone. - Fix capstone on Windows - Add capstone as hsdis backend Changes: https://git.openjdk.java.net/jdk/pull/7506/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk=7506=00 Issue: https://bugs.openjdk.java.net/browse/JDK-8188073 Stats: 517 lines in 9 files changed: 346 ins; 136 del; 35 mod Patch: https://git.openjdk.java.net/jdk/pull/7506.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7506/head:pull/7506 PR: https://git.openjdk.java.net/jdk/pull/7506
Re: RFR: 8253757: Add LLVM-based backend for hsdis [v8]
On Wed, 16 Feb 2022 14:39:49 GMT, Magnus Ihse Bursie wrote: >> This patch expands the newly added system for hsdis backends to include LLVM. >> >> The actual code in hsdis-llvm.cpp is based heavily on the work by @luhenry, >> as published in the never integrated PR >> https://github.com/openjdk/jdk/pull/392. (I have basically just ripped out >> the binutils-based part of it.) >> >> Unfortunately I have not been able to make this work properly on Windows. >> With some additional flags I made it compile without complaints, but it >> caused hotspot to segfault in `LoadLibrary` (!) in `os::dll_load` when I >> tried to load the library. This is somewhat ironic, since the initial >> implementation was created by Ludovic for the very purpose of using it on >> Windows. >> >> The lack of Windows support in this patch does not mean it is impossible to >> get it to work, just that I need to co-operate with someone who has more >> experience of compiling LLVM on Windows, and/or are more eager to get this >> combination to work. > > Magnus Ihse Bursie has updated the pull request incrementally with two > additional commits since the last revision: > > - Add section on using LLVM > - Allow override of LLVM location using --with-llvm This PR has just gotten too messy. :-( I'll close this one for now, focus on getting the (much simpler) Capstone backend integrated, and then I can come back and revisit this functionality, but in a fresh new PR. - PR: https://git.openjdk.java.net/jdk/pull/5920
Withdrawn: 8253757: Add LLVM-based backend for hsdis
On Wed, 13 Oct 2021 00:00:22 GMT, Magnus Ihse Bursie wrote: > This patch expands the newly added system for hsdis backends to include LLVM. > > The actual code in hsdis-llvm.cpp is based heavily on the work by @luhenry, > as published in the never integrated PR > https://github.com/openjdk/jdk/pull/392. (I have basically just ripped out > the binutils-based part of it.) > > Unfortunately I have not been able to make this work properly on Windows. > With some additional flags I made it compile without complaints, but it > caused hotspot to segfault in `LoadLibrary` (!) in `os::dll_load` when I > tried to load the library. This is somewhat ironic, since the initial > implementation was created by Ludovic for the very purpose of using it on > Windows. > > The lack of Windows support in this patch does not mean it is impossible to > get it to work, just that I need to co-operate with someone who has more > experience of compiling LLVM on Windows, and/or are more eager to get this > combination to work. This pull request has been closed without being integrated. - PR: https://git.openjdk.java.net/jdk/pull/5920
Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v7]
On Wed, 16 Feb 2022 21:39:20 GMT, Tim Prinzing wrote: >> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is >> null > > Tim Prinzing has updated the pull request with a new target base due to a > merge or a rebase. The pull request now contains 10 commits: > > - Merge master > - fix test breakage from rename > - reformat test summary > - reformat test summary > - improve test name and remove experimental test code > - fix copyright date > - More changes from feedback. > >The javadoc is improved to reflect InvalidCallerException is thrown with >a caller that can't be assigned to a ClassLoader as well as a null >caller frame. Added a test IsParallelCapableBadCaller that uses >reflection hackery to create a case where called with an invalid caller >on the call stack. > - Changes from feedback. > >- Copyright dates fixed >- IllegalCallerException thrown for no caller frame, and associated >javadoc changes >- test changed to look for IllegalCallerException thrown. > - Merge branch 'master' into JDK-8281000 > - JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Looks good. - Marked as reviewed by mchung (Reviewer). PR: https://git.openjdk.java.net/jdk/pull/7448
Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v7]
> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Tim Prinzing has updated the pull request with a new target base due to a merge or a rebase. The pull request now contains 10 commits: - Merge master - fix test breakage from rename - reformat test summary - reformat test summary - improve test name and remove experimental test code - fix copyright date - More changes from feedback. The javadoc is improved to reflect InvalidCallerException is thrown with a caller that can't be assigned to a ClassLoader as well as a null caller frame. Added a test IsParallelCapableBadCaller that uses reflection hackery to create a case where called with an invalid caller on the call stack. - Changes from feedback. - Copyright dates fixed - IllegalCallerException thrown for no caller frame, and associated javadoc changes - test changed to look for IllegalCallerException thrown. - Merge branch 'master' into JDK-8281000 - JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null - Changes: https://git.openjdk.java.net/jdk/pull/7448/files Webrev: https://webrevs.openjdk.java.net/?repo=jdk=7448=06 Stats: 216 lines in 5 files changed: 216 ins; 0 del; 0 mod Patch: https://git.openjdk.java.net/jdk/pull/7448.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7448/head:pull/7448 PR: https://git.openjdk.java.net/jdk/pull/7448
Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v6]
> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Tim Prinzing has updated the pull request incrementally with one additional commit since the last revision: fix test breakage from rename - Changes: - all: https://git.openjdk.java.net/jdk/pull/7448/files - new: https://git.openjdk.java.net/jdk/pull/7448/files/a449acdc..977162db Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=7448=05 - incr: https://webrevs.openjdk.java.net/?repo=jdk=7448=04-05 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/7448.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7448/head:pull/7448 PR: https://git.openjdk.java.net/jdk/pull/7448
Integrated: JDK-8281003 - MethodHandles::lookup throws NPE if caller is null
On Fri, 11 Feb 2022 20:32:46 GMT, Tim Prinzing wrote: > JDK-8281003 - MethodHandles::lookup throws NPE if caller is null This pull request has now been integrated. Changeset: 67763df4 Author:Tim Prinzing Committer: Mandy Chung URL: https://git.openjdk.java.net/jdk/commit/67763df4dce387da33da6d93d0f5d80e54cf8e5b Stats: 160 lines in 4 files changed: 158 ins; 0 del; 2 mod 8281003: MethodHandles::lookup throws NPE if caller is null Reviewed-by: ihse, mchung, jrose, alanb - PR: https://git.openjdk.java.net/jdk/pull/7447
Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v5]
> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Tim Prinzing has updated the pull request incrementally with three additional commits since the last revision: - reformat test summary - reformat test summary - improve test name and remove experimental test code - Changes: - all: https://git.openjdk.java.net/jdk/pull/7448/files - new: https://git.openjdk.java.net/jdk/pull/7448/files/533a0660..a449acdc Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=7448=04 - incr: https://webrevs.openjdk.java.net/?repo=jdk=7448=03-04 Stats: 129 lines in 3 files changed: 58 ins; 70 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/7448.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7448/head:pull/7448 PR: https://git.openjdk.java.net/jdk/pull/7448
Re: RFR: JDK-8281003 - MethodHandles::lookup throws NPE if caller is null [v5]
On Wed, 16 Feb 2022 17:55:55 GMT, Tim Prinzing wrote: >> JDK-8281003 - MethodHandles::lookup throws NPE if caller is null > > Tim Prinzing has updated the pull request incrementally with one additional > commit since the last revision: > > fix copyright date Marked as reviewed by alanb (Reviewer). - PR: https://git.openjdk.java.net/jdk/pull/7447
Re: RFR: JDK-8281003 - MethodHandles::lookup throws NPE if caller is null [v5]
> JDK-8281003 - MethodHandles::lookup throws NPE if caller is null Tim Prinzing has updated the pull request incrementally with one additional commit since the last revision: fix copyright date - Changes: - all: https://git.openjdk.java.net/jdk/pull/7447/files - new: https://git.openjdk.java.net/jdk/pull/7447/files/7d1b97fe..ecfd125f Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=7447=04 - incr: https://webrevs.openjdk.java.net/?repo=jdk=7447=03-04 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/7447.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7447/head:pull/7447 PR: https://git.openjdk.java.net/jdk/pull/7447
Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v4]
> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Tim Prinzing has updated the pull request incrementally with one additional commit since the last revision: fix copyright date - Changes: - all: https://git.openjdk.java.net/jdk/pull/7448/files - new: https://git.openjdk.java.net/jdk/pull/7448/files/d67bbb16..533a0660 Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=7448=03 - incr: https://webrevs.openjdk.java.net/?repo=jdk=7448=02-03 Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/7448.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7448/head:pull/7448 PR: https://git.openjdk.java.net/jdk/pull/7448
Re: RFR: JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is null [v3]
> JDK-8281000 ClassLoader::registerAsParallelCapable throws NPE if caller is > null Tim Prinzing has updated the pull request incrementally with one additional commit since the last revision: More changes from feedback. The javadoc is improved to reflect InvalidCallerException is thrown with a caller that can't be assigned to a ClassLoader as well as a null caller frame. Added a test IsParallelCapableBadCaller that uses reflection hackery to create a case where called with an invalid caller on the call stack. - Changes: - all: https://git.openjdk.java.net/jdk/pull/7448/files - new: https://git.openjdk.java.net/jdk/pull/7448/files/fa66af15..d67bbb16 Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=7448=02 - incr: https://webrevs.openjdk.java.net/?repo=jdk=7448=01-02 Stats: 85 lines in 3 files changed: 74 ins; 5 del; 6 mod Patch: https://git.openjdk.java.net/jdk/pull/7448.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/7448/head:pull/7448 PR: https://git.openjdk.java.net/jdk/pull/7448
Re: RFR: 8203290: [AIX] Check functionality of JDK-8199712 (Flight Recorder) [v21]
On Mon, 14 Feb 2022 23:44:40 GMT, Tyler Steele wrote: >> Just in time for the holidays I have completed an implementation of the JFR >> functionality for AIX. As a side note, this is my first submission to >> OpenJDK >> >> ### Implementation notes and alternatives considered >> >> After modifying the build system to allow the --enable-jvm-feature-jfr to >> work on AIX, my task was to implement the interfaces from os_perf.hpp. The >> os_perf_aix.cpp implementation that existed was, I believe, a copy of the >> Linux implementation. A review of the code in that file showed that >> NetworkInterface, CPUPerformanceInterface, and SystemProcessInterface would >> require modification to work on AIX. Using the Linux implementation as a >> guide, I initially expected to use files from the aix procfs like >> /proc//psinfo, and /proc//status in a manner similar to the Linux >> implementation. However, I ended up using libperfstat for all functionality >> required by the interfaces. >> >> ### Testing >> >> Testing for JFR seems to be quite light in the repo both before and after >> this change. In addition to performing manual testing, I have added some >> basic sanity checks that ensure events can be created and committed (using >> jtreg), and performs some basic checks on the results of the interface >> member functions (using gtest). >> >> ### More notes >> >> I've sent an email to the JFR group about a TOC overflow warning I >> encountered while building (for the release server target). I believe the >> fix is to pass -qpic=large when using the xlc toolchain, but my >> modifications to flags-cflags.m4 have not been successful in removing this >> warning. > > Tyler Steele has updated the pull request with a new target base due to a > merge or a rebase. The pull request now contains eight commits: > > - Adds Oracle & IBM copyrights as per guidance from IBM legal team. > - Removes incorrect Oracle copyright line from libperfstat_aix.cpp/hpp, and > loadlib_aix.hpp > - Edit thread_aix.cpp to match thread_linux.cpp in > pd_get_top_fram_for_profiling and ...for_signal_handler > - Addresses issues from review and other sm fixes > >- Adds commenting in regards to memory handling by SystemProcess & >NetworkInterface classes >- Replaces explicit initialization and copy of structs with memcpy >and memset as appropriate >- Renames internal struct definitions in os_perf_aix >- Other minor fixes > - Changes macoss -> macosx in problem list > - Refactors loadlib_aix: Removes redundant c++ class > - Merge branch 'master' into JDK-8203290 > - Implements JFR on AIX > >- Implements interfaces from os_perf.hpp in os_perf_aix.cpp >- Updates libperfstat_aix to contain functionality needed by os_perf_aix >- Implements missing functionality in loadlib_aix (Fixes failure noted >by TestNativeLibraies.java) >- Removes platform checks for --enable-feature-jfr (Now enable-able on >all platforms) >- Enables TestNetworkUtilizationEvent.java which now passes on AIX >- Updates AIX JavaThread::pd_get_top_frame_for_profiling with changes from > Linux Thanks very much to the many reviewers who helped make this PR happen. Your support is very much appreciated I suggest these we /integrate these changes. - PR: https://git.openjdk.java.net/jdk/pull/6885
Re: RFR: 8253757: Add LLVM-based backend for hsdis [v8]
> This patch expands the newly added system for hsdis backends to include LLVM. > > The actual code in hsdis-llvm.cpp is based heavily on the work by @luhenry, > as published in the never integrated PR > https://github.com/openjdk/jdk/pull/392. (I have basically just ripped out > the binutils-based part of it.) > > Unfortunately I have not been able to make this work properly on Windows. > With some additional flags I made it compile without complaints, but it > caused hotspot to segfault in `LoadLibrary` (!) in `os::dll_load` when I > tried to load the library. This is somewhat ironic, since the initial > implementation was created by Ludovic for the very purpose of using it on > Windows. > > The lack of Windows support in this patch does not mean it is impossible to > get it to work, just that I need to co-operate with someone who has more > experience of compiling LLVM on Windows, and/or are more eager to get this > combination to work. Magnus Ihse Bursie has updated the pull request incrementally with two additional commits since the last revision: - Add section on using LLVM - Allow override of LLVM location using --with-llvm - Changes: - all: https://git.openjdk.java.net/jdk/pull/5920/files - new: https://git.openjdk.java.net/jdk/pull/5920/files/467e1bb1..5ea9bc0d Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=5920=07 - incr: https://webrevs.openjdk.java.net/?repo=jdk=5920=06-07 Stats: 37 lines in 2 files changed: 32 ins; 0 del; 5 mod Patch: https://git.openjdk.java.net/jdk/pull/5920.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5920/head:pull/5920 PR: https://git.openjdk.java.net/jdk/pull/5920
Re: RFR: 8253757: Add LLVM-based backend for hsdis [v7]
> This patch expands the newly added system for hsdis backends to include LLVM. > > The actual code in hsdis-llvm.cpp is based heavily on the work by @luhenry, > as published in the never integrated PR > https://github.com/openjdk/jdk/pull/392. (I have basically just ripped out > the binutils-based part of it.) > > Unfortunately I have not been able to make this work properly on Windows. > With some additional flags I made it compile without complaints, but it > caused hotspot to segfault in `LoadLibrary` (!) in `os::dll_load` when I > tried to load the library. This is somewhat ironic, since the initial > implementation was created by Ludovic for the very purpose of using it on > Windows. > > The lack of Windows support in this patch does not mean it is impossible to > get it to work, just that I need to co-operate with someone who has more > experience of compiling LLVM on Windows, and/or are more eager to get this > combination to work. Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision: Make sure install-hsdis also copies to image - Changes: - all: https://git.openjdk.java.net/jdk/pull/5920/files - new: https://git.openjdk.java.net/jdk/pull/5920/files/47cf9a1b..467e1bb1 Webrevs: - full: https://webrevs.openjdk.java.net/?repo=jdk=5920=06 - incr: https://webrevs.openjdk.java.net/?repo=jdk=5920=05-06 Stats: 7 lines in 1 file changed: 6 ins; 0 del; 1 mod Patch: https://git.openjdk.java.net/jdk/pull/5920.diff Fetch: git fetch https://git.openjdk.java.net/jdk pull/5920/head:pull/5920 PR: https://git.openjdk.java.net/jdk/pull/5920
