JVMInit function call - where is it located the source?

mr rupplin mearvk at outlook.com
Wed Aug 22 01:41:12 UTC 2018


Ok, David.  Great, you did it.

________________________________
From: David Holmes <david.holmes at oracle.com>
Sent: Tuesday, August 21, 2018 9:38:06 PM
To: mr rupplin; core-libs-dev at openjdk.java.net; Andrew Haley
Subject: Re: JVMInit function call - where is it located the source?

On 22/08/2018 11:02 AM, mr rupplin wrote:
> Quickly, where do we look?  I can't seem to find where the "javac" command is called in the C interface.

javac is just the name of a executable launcher that is built.

See make/launcher/Launcher-jdk.compiler.gmk

> Where is the java code that runs the parser/compiler?  Ok, thanks gotta run ably.

src/jdk.compiler/share/classes/com/sun/tools/javac

David

>
> /mr
>
> ________________________________
> From: mr rupplin <mearvk at outlook.com>
> Sent: Tuesday, August 21, 2018 6:37:30 PM
> To: core-libs-dev at openjdk.java.net; Andrew Haley
> Subject: Re: JVMInit function call - where is it located the source?
>
> Thanks.
>
> Get Outlook for Android<https://aka.ms/ghei36>
>
> ________________________________
> From: Andrew Haley <aph at redhat.com>
> Sent: Tuesday, August 21, 2018 12:32:20 PM
> To: mr rupplin; core-libs-dev at openjdk.java.net
> Subject: Re: JVMInit function call - where is it located the source?
>
> On 08/21/2018 05:21 PM, mr rupplin wrote:
>> Inside java.c there is a JLI_Launch which purports to be the launching or entry point for the JVM.  The last line shows:
>>
>>
>> return JVMInit(&ifn, threadStackSize, argc, argv, mode, what, ret);
>>
>>
>> This is given apparently as a function call that will return an int.  However the include file java.h shows no source for this function.
>
>>   Where is it located?
>
> Couldn't you just look?
>
> src/java.base/unix/native/libjli/java_md_solinux.c:79
>
>> And finally where is the javac.c source file? I'm sure it's been here and now its lost. - ok
>
> It's part of the Java launcher, jexec.c. The easiest way to discover
> this stuff is to run javac in a real C++ debugger.
>
> --
> Andrew Haley
> Java Platform Lead Engineer
> Red Hat UK Ltd. <https://www.redhat.com>
> EAC8 43EB D3EF DB98 CC77 2FAD A5CD 6035 332F A671
>


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