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Date: Fri, 24 Nov 2006 16:17:29 +0000
From: Tim Ellison <t.p.ellison@gmail.com>
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To: dev@harmony.apache.org
Subject: Re: [classlib][awt] Test failure
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 <26c14c2a0611240727v26026917wf0bbae5e3455432a@mail.gmail.com>
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Oleg Khaschansky wrote:
> I'd suggest to install libxmu.

Surely we can do better than GPF in such circumstances :-)

Where should I modify the code to return gracefully from the native if
the function is not found (bearing in mind the warning in the source file).

Regards,
Tim

> On 11/23/06, Tim Ellison <t.p.ellison@gmail.com> wrote:
>> It looks like the following code (taken from [1]) doesn't allow for a
>> function address not being found.
>>
>> int (* p_nbridge_XmuLookupStandardColormap) (void *, int, long, int,
>> long, int, int) = NULL;
>>
>> JNIEXPORT jint  JNICALL
>> Java_org_apache_harmony_awt_nativebridge_linux_X11_XmuLookupStandardColormap(
>>
>> JNIEnv *env, jobject self, jlong dpy, jint screen, jlong visualid, jint
>> depth, jlong property, jint replace, jint retain) {
>>     if (p_nbridge_XmuLookupStandardColormap == NULL) {
>>         p_nbridge_XmuLookupStandardColormap = (int (*) (void *, int,
>> long, int, long, int, int)) FindFunction(libXmu,
>> "XmuLookupStandardColormap");
>>     }
>>     return (jint) (* p_nbridge_XmuLookupStandardColormap)((void *) dpy,
>> (int) screen, (long) visualid, (int) depth, (long) property, (int)
>> replace, (int) retain);
>> }
>>
>>
>> which I'm guessing is the cause of the recurrent build failure on the
>> build machine (latest classlib + IBM VM) ...
>>
>>
>> >      [exec]     [junit] Type=Segmentation error vmState=0x00040000
>> >      [exec]     [junit] J9Generic_Signal_Number=00000004
>> Signal_Number=0000000b Error_Value=00000000 Signal_Code=00000001
>> >      [exec]     [junit] Handler1=402504A4 Handler2=401FD343
>> InaccessibleAddress=00000000
>> >      [exec]     [junit] EDI=0816DA90 ESI=0000001B EAX=BB501CA4
>> EBX=BB501B38
>> >      [exec]     [junit] ECX=00000000 EDX=081C4C18
>> >      [exec]     [junit] EIP=00000000 ES=0000007B DS=C010007B
>> ESP=BFFFD538
>> >      [exec]     [junit] EFlags=00010282 CS=00000073 SS=0000007B
>> EBP=BFFFD584
>> >      [exec]     [junit] Target=2_30_20060727_07300_lHdSMR (Linux
>> 2.6.8-3-686-smp)
>> >      [exec]     [junit] CPU=x86 (8 logical CPUs) (0xdcc94000 RAM)
>>
>> <snip>
>>
>> >      [exec]     [junit] Thread: main (priority 5) (LOCATION OF ERROR)
>> >      [exec]     [junit]  NATIVE  
>> org/apache/harmony/awt/nativebridge/linux/X11.XmuLookupStandardColormap(JIJIJII)I
>>
>> >      [exec]     [junit]  00000080
>> org/apache/harmony/awt/gl/linux/XGraphicsConfiguration.obtainRGBColorMap()J
>>
>> >      [exec]     [junit]  00000015
>> org/apache/harmony/awt/gl/linux/XGraphicsConfiguration.<init>(Lorg/apache/harmony/awt/gl/linux/XGraphicsDevice;Lorg/apache/harmony/awt/nativebridge/linux/X11$XVisualInfo;)V
>>
>> >      [exec]     [junit]  000000a5
>> org/apache/harmony/awt/gl/linux/XGraphicsDevice.createConfigs()V
>> >      [exec]     [junit]  00000008
>> org/apache/harmony/awt/gl/linux/XGraphicsDevice.getConfigs()[Lorg/apache/harmony/awt/gl/linux/XGraphicsConfiguration;
>>
>> >      [exec]     [junit]  00000001
>> org/apache/harmony/awt/gl/linux/XGraphicsDevice.getDefaultConfiguration()Ljava/awt/GraphicsConfiguration;
>>
>> >      [exec]     [junit]  0000000f
>> java/awt/Window.getGraphicsConfiguration(Ljava/awt/GraphicsConfiguration;)Ljava/awt/GraphicsConfiguration;
>>
>> >      [exec]     [junit]  0000007a
>> java/awt/Window.<init>(Ljava/awt/Window;Ljava/awt/GraphicsConfiguration;)V
>>
>> >      [exec]     [junit]  00000003
>> java/awt/Frame.<init>(Ljava/lang/String;Ljava/awt/GraphicsConfiguration;)V
>>
>> >      [exec]     [junit]  00000003
>> java/awt/Frame.<init>(Ljava/lang/String;)V
>> >      [exec]     [junit]  00000003 java/awt/Frame.<init>()V
>> >      [exec]     [junit]  00000009 java/awt/Graphics2DTest.setUp()V
>>
>>
>> Not sure what has changed to cause this failure.  The file [1] says
>> /* DO NOT EDIT THIS FILE - it is based on X11 headers and was
>> autogenerated by nativebridge tool */
>>
>> so I'm guessing I can't fix it up there.  suggestions?
>>
>>
>> [1]
>> http://svn.apache.org/viewvc/harmony/enhanced/classlib/trunk/modules/awt/src/main/native/x11wrapper/linux/org_apache_harmony_awt_nativebridge_linux_X11.cpp?revision=476395&view=markup
>>
>>
>> Regards,
>> Tim
>>
>> -- 
>>
>> Tim Ellison (t.p.ellison@gmail.com)
>> IBM Java technology centre, UK.
>>
> 

-- 

Tim Ellison (t.p.ellison@gmail.com)
IBM Java technology centre, UK.