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Posted to dev@harmony.apache.org by Andrew Zhang <zh...@gmail.com> on 2007/10/11 02:26:54 UTC
[M3] Failed to open agent library jdwp.dll when debugging a java application
Hi all,
I met another problem on another machine. This one looks much easier:
Failed to open agent library jdwp.dll : 找不到指定的模块。 (Can not find the
specified module)
Failed to open agent library jdwp.dll
Failed to initialize JVMTI.
Scenario: Just run debug of following code
public static void main(String[] args) {
for (int i = 0; i < 100; ++i) {
++i;
System.out.println(i);
}
}
Platform info:
OS: Microsoft Windows XP Home Edition Version 2002 Service Pack 2
Eclipse: version 3.3.0
jdwp.dll does exist under jre\bin
What might be wrong? Thanks!
--
Best regards,
Andrew Zhang
http://zhanghuangzhu.blogspot.com/
Re: [M3] Failed to open agent library jdwp.dll when debugging a java application
Posted by Andrew Zhang <zh...@gmail.com>.
On 10/11/07, Tim Ellison <t....@gmail.com> wrote:
>
> Andrew Zhang wrote:
> > On 10/11/07, Alexei Fedotov <al...@gmail.com> wrote:
> >> Hi Andrew,
> >> Are you using federated build?
> >>
> >> When people build classlib and drlvm separately, they don't get
> >> jdwp.dll since it is built from jdktools module. One may use federated
> >> build (ant -Dauto.fetch=true) or build the module jdktools
> >> (worling_jdktools) and copy the dynamic libraries manually.
> >
> > Thanks Alexei!
> >
> > Yes, I downloaded M3 from our website, using harmony-hdk-580985\jdk\jre
> as
> > the jre path in "Installed JREs". jdwp.dll does exist under jdk\jre\bin.
> Any
> > other possible reason?
>
> Possible that the DLL's dependencies are missing so it won't load.
> Having said that I just looked at jdwp.dll on my system and the only
> dependencies appear to be kernel32.dll, msvcp71.dll, and msvcr71.dll.
Thanks Tim,
You found the problem! msvcp71.dll does not exist under
harmony-hdk-580985\jdk\jre\bin.
Is there any special reason? After I downloaded msvcp71.dll and put it into
the folder, debugger works fine!
Regards,
> Tim
>
--
Best regards,
Andrew Zhang
http://zhanghuangzhu.blogspot.com/
Re: [M3] Failed to open agent library jdwp.dll when debugging a java application
Posted by Alexey Varlamov <al...@gmail.com>.
2007/10/11, Tim Ellison <t....@gmail.com>:
> Andrew Zhang wrote:
> > On 10/11/07, Alexei Fedotov <al...@gmail.com> wrote:
> >> Hi Andrew,
> >> Are you using federated build?
> >>
> >> When people build classlib and drlvm separately, they don't get
> >> jdwp.dll since it is built from jdktools module. One may use federated
> >> build (ant -Dauto.fetch=true) or build the module jdktools
> >> (worling_jdktools) and copy the dynamic libraries manually.
> >
> > Thanks Alexei!
> >
> > Yes, I downloaded M3 from our website, using harmony-hdk-580985\jdk\jre as
> > the jre path in "Installed JREs". jdwp.dll does exist under jdk\jre\bin. Any
> > other possible reason?
>
> Possible that the DLL's dependencies are missing so it won't load.
> Having said that I just looked at jdwp.dll on my system and the only
> dependencies appear to be kernel32.dll, msvcp71.dll, and msvcr71.dll.
Another reason could be cleared "read&execute" permission for the dll,
this happens e.g. if a dll is unzipped with cygwin's unzip utility.
>
> Regards,
> Tim
>
Re: [M3] Failed to open agent library jdwp.dll when debugging a java
application
Posted by Tim Ellison <t....@gmail.com>.
Andrew Zhang wrote:
> On 10/11/07, Alexei Fedotov <al...@gmail.com> wrote:
>> Hi Andrew,
>> Are you using federated build?
>>
>> When people build classlib and drlvm separately, they don't get
>> jdwp.dll since it is built from jdktools module. One may use federated
>> build (ant -Dauto.fetch=true) or build the module jdktools
>> (worling_jdktools) and copy the dynamic libraries manually.
>
> Thanks Alexei!
>
> Yes, I downloaded M3 from our website, using harmony-hdk-580985\jdk\jre as
> the jre path in "Installed JREs". jdwp.dll does exist under jdk\jre\bin. Any
> other possible reason?
Possible that the DLL's dependencies are missing so it won't load.
Having said that I just looked at jdwp.dll on my system and the only
dependencies appear to be kernel32.dll, msvcp71.dll, and msvcr71.dll.
Regards,
Tim
Re: [M3] Failed to open agent library jdwp.dll when debugging a java application
Posted by Andrew Zhang <zh...@gmail.com>.
On 10/11/07, Alexei Fedotov <al...@gmail.com> wrote:
>
> Hi Andrew,
> Are you using federated build?
>
> When people build classlib and drlvm separately, they don't get
> jdwp.dll since it is built from jdktools module. One may use federated
> build (ant -Dauto.fetch=true) or build the module jdktools
> (worling_jdktools) and copy the dynamic libraries manually.
Thanks Alexei!
Yes, I downloaded M3 from our website, using harmony-hdk-580985\jdk\jre as
the jre path in "Installed JREs". jdwp.dll does exist under jdk\jre\bin. Any
other possible reason?
Hope, this helps.
>
> With best regards, Alexei
>
> On 10/11/07, Andrew Zhang <zh...@gmail.com> wrote:
> > Hi all,
> >
> > I met another problem on another machine. This one looks much easier:
> >
> > Failed to open agent library jdwp.dll : 找不到指定的模块。 (Can not find the
> > specified module)
> >
> > Failed to open agent library jdwp.dll
> >
> > Failed to initialize JVMTI.
> >
> > Scenario: Just run debug of following code
> >
> > public static void main(String[] args) {
> > for (int i = 0; i < 100; ++i) {
> > ++i;
> > System.out.println(i);
> > }
> > }
> >
> > Platform info:
> >
> > OS: Microsoft Windows XP Home Edition Version 2002 Service Pack 2
> > Eclipse: version 3.3.0
> >
> > jdwp.dll does exist under jre\bin
> >
> > What might be wrong? Thanks!
> >
> >
> > --
> > Best regards,
> > Andrew Zhang
> >
> > http://zhanghuangzhu.blogspot.com/
> >
>
>
> --
> With best regards,
> Alexei,
> ESSD, Intel
>
--
Best regards,
Andrew Zhang
http://zhanghuangzhu.blogspot.com/
Re: [M3] Failed to open agent library jdwp.dll when debugging a java application
Posted by Alexei Fedotov <al...@gmail.com>.
Hi Andrew,
Are you using federated build?
When people build classlib and drlvm separately, they don't get
jdwp.dll since it is built from jdktools module. One may use federated
build (ant -Dauto.fetch=true) or build the module jdktools
(worling_jdktools) and copy the dynamic libraries manually.
Hope, this helps.
With best regards, Alexei
On 10/11/07, Andrew Zhang <zh...@gmail.com> wrote:
> Hi all,
>
> I met another problem on another machine. This one looks much easier:
>
> Failed to open agent library jdwp.dll : 找不到指定的模块。 (Can not find the
> specified module)
>
> Failed to open agent library jdwp.dll
>
> Failed to initialize JVMTI.
>
> Scenario: Just run debug of following code
>
> public static void main(String[] args) {
> for (int i = 0; i < 100; ++i) {
> ++i;
> System.out.println(i);
> }
> }
>
> Platform info:
>
> OS: Microsoft Windows XP Home Edition Version 2002 Service Pack 2
> Eclipse: version 3.3.0
>
> jdwp.dll does exist under jre\bin
>
> What might be wrong? Thanks!
>
>
> --
> Best regards,
> Andrew Zhang
>
> http://zhanghuangzhu.blogspot.com/
>
--
With best regards,
Alexei,
ESSD, Intel