Hi Serguei, > This looks good to me.
Thanks! From an earlier mail: > I'm thinking it would be more safe to run full tier5. I guess we're done with reviewing. Would be good if you could run full tier5 now. After that I would like to push. Thanks, Richard. -----Original Message----- From: serguei.spit...@oracle.com <serguei.spit...@oracle.com> Sent: Dienstag, 2. Juni 2020 18:55 To: Vladimir Kozlov <vladimir.koz...@oracle.com>; Reingruber, Richard <richard.reingru...@sap.com>; serviceability-dev@openjdk.java.net; hotspot-compiler-...@openjdk.java.net; hotspot-runtime-...@openjdk.java.net; hotspot-gc-...@openjdk.java.net Subject: Re: RFR(S) 8238585: Use handshake for JvmtiEventControllerPrivate::enter_interp_only_mode() and don't make compiled methods on stack not_entrant Hi Richard, This looks good to me. Thanks, Serguei On 5/28/20 09:02, Vladimir Kozlov wrote: > Vladimir Ivanov is on break currently. > It looks good to me. > > Thanks, > Vladimir K > > On 5/26/20 7:31 AM, Reingruber, Richard wrote: >> Hi Vladimir, >> >>>> Webrev: http://cr.openjdk.java.net/~rrich/webrevs/8238585/webrev.0/ >> >>> Not an expert in JVMTI code base, so can't comment on the actual >>> changes. >> >>> From JIT-compilers perspective it looks good. >> >> I put out webrev.1 a while ago [1]: >> >> Webrev: http://cr.openjdk.java.net/~rrich/webrevs/8238585/webrev.1/ >> Webrev(delta): >> http://cr.openjdk.java.net/~rrich/webrevs/8238585/webrev.1.inc/ >> >> You originally suggested to use a handshake to switch a thread into >> interpreter mode [2]. I'm using >> a direct handshake now, because I think it is the best fit. >> >> May I ask if webrev.1 still looks good to you from JIT-compilers >> perspective? >> >> Can I list you as (partial) Reviewer? >> >> Thanks, Richard. >> >> [1] >> http://mail.openjdk.java.net/pipermail/serviceability-dev/2020-April/031245.html >> [2] >> http://mail.openjdk.java.net/pipermail/serviceability-dev/2020-January/030340.html >> >> -----Original Message----- >> From: Vladimir Ivanov <vladimir.x.iva...@oracle.com> >> Sent: Freitag, 7. Februar 2020 09:19 >> To: Reingruber, Richard <richard.reingru...@sap.com>; >> serviceability-dev@openjdk.java.net; >> hotspot-compiler-...@openjdk.java.net >> Subject: Re: RFR(S) 8238585: Use handshake for >> JvmtiEventControllerPrivate::enter_interp_only_mode() and don't make >> compiled methods on stack not_entrant >> >> >>> Webrev: http://cr.openjdk.java.net/~rrich/webrevs/8238585/webrev.0/ >> >> Not an expert in JVMTI code base, so can't comment on the actual >> changes. >> >> From JIT-compilers perspective it looks good. >> >> Best regards, >> Vladimir Ivanov >> >>> Bug: https://bugs.openjdk.java.net/browse/JDK-8238585 >>> >>> The change avoids making all compiled methods on stack not_entrant >>> when switching a java thread to >>> interpreter only execution for jvmti purposes. It is sufficient to >>> deoptimize the compiled frames on stack. >>> >>> Additionally a handshake is used instead of a vm operation to walk >>> the stack and do the deoptimizations. >>> >>> Testing: JCK and JTREG tests, also in Xcomp mode with fastdebug and >>> release builds on all platforms. >>> >>> Thanks, Richard. >>> >>> See also my question if anyone knows a reason for making the >>> compiled methods not_entrant: >>> http://mail.openjdk.java.net/pipermail/serviceability-dev/2020-January/030339.html >>> >>> >>>
