RFR: 8034094: SA agent can't compile when jni_x86.h is used
erik.helin at oracle.com
Wed Apr 30 11:26:00 UTC 2014
Anyone interested in this patch? I ran into this issue again yesterday...
On 2014-02-10 16:21, Erik Helin wrote:
> Sigh, I forgot the subject...
> "RFR: 8034094: SA agent can't compile when jni_x86.h is used"
> On 2014-02-10 16:08, Erik Helin wrote:
>> Hi all,
>> this patch fixes an issue with HotSpot's makefiles, IMPORT_JDK and
>> The bug manifests itself when using an IMPORT_JDK which
>> include/linux/jni_md.h has a timestamp that is older than
>> hotspot/src/cpu/x86/jni_x86.h. When this happens, the Makefiles will
>> copy hotspot/src/cpu/x86/jni_x86.h to
>> The issue is that hotspot/src/cpu/x86/jni_x86.h differs slightly from
>> jdk/include/jni.h, since it is used for all operating systems:
>> #if defined(SOLARIS) || defined(LINUX) || defined(_ALLBSD_SOURCE)
>> ... // common stuff
>> ... // windows stuff
>> We compile the SA agent, see make/linux/makefiles/saproc.make, without
>> defining LINUX (LINUX is hotspot's own define, gcc uses __linux__).
>> In my opinion, there are two ways to solve this:
>> 1. Add -DLINUX to make/linux/makefiles/saproc.make (and corresponding
>> defines for Solaris and BSD).
>> 2. Rewrite the #if check in jni_x86.h to use platform specific "native"
>> I've created a patch for each alternative:
>> 1: http://cr.openjdk.java.net/~ehelin/8034094/webrev.1/
>> 2: http://cr.openjdk.java.net/~ehelin/8034094/webrev.2/
>> For the second patch, note that I've inverted the #if check so that it
>> checks for _WIN32 is defined and treat all others operating systems as
>> - Compiled both version locally and made sure it worked
>> - JPRT
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