<Swing Dev> [13] RFR: JDK-8219914: Change the environment variable for Java Access Bridge logging to have a directory.

[Krishna Addepalli]

No it is not. When I'm adding "+1" and "+5", it simply adds that many number of characters to the size.

The sizeof(char) can be more than 1, and this statement at line 51 (filePath = new char[filePathSize]), takes care of allocating sufficient number of bytes, which accommodate "filePathSize" number of characters.

The problem is with memcpy and memset functions, which expect the size of the buffer to be provided in terms of bytes, which is why, we need the multiplier only in those functions.

 

Even I'm in favor of getting rid of them, but unfortunately I cannot std::string in this case, which would have vastly simplified the code, and avoided this manual calculation of sizes, but that results in compiler errors.

 

Thanks,

Krishna

 

From: Phil Race 
Sent: Thursday, March 28, 2019 3:11 AM
To: Krishna Addepalli <krishna.addepalli at oracle.com>; swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [13] RFR: JDK-8219914: Change the environment variable for Java Access Bridge logging to have a directory.

 

Hi,

It is still inconsistent. the "+1" and "+5" logic relies on the answer to sizeof(char) being 1.
So either get rid of all those calls or use sizeof('/') and sizeof(".logX"); instead of 1 and 5.

I'd get rid of them ....

-phil

On 3/27/19 1:41 AM, Krishna Addepalli wrote:

Hi Phil,

 

Thanks for the review.

I have changed the variable to "JAVA_ACCESSBRIDGE_LOGDIR".

 

Yes, '/' file separator character works on windows. I have used it in the past and have also currently tested it on my machine and it works.

 

I have added the multiplier "sizeof(char)" for all memcpy and memset lines in the code, to keep it consistent. Thanks for pointing that out.

 

Here is the link to the webrev: http://cr.openjdk.java.net/~kaddepalli/8219914/webrev01/

 

Thanks,

Krishna

 

From: Phil Race 
Sent: Tuesday, March 26, 2019 10:42 PM
To: Krishna Addepalli HYPERLINK "mailto:krishna.addepalli at oracle.com"<krishna.addepalli at oracle.com>; HYPERLINK "mailto:swing-dev at openjdk.java.net"swing-dev at openjdk.java.net
Subject: Re: <Swing Dev> [13] RFR: JDK-8219914: Change the environment variable for Java Access Bridge logging to have a directory.

 

Can we just call it  JAVA_ACCESSBRIDGE_LOGDIR ?
 
 
 filePath[envFilePathLength] = '/';
 
Is this right ? Does fopen on Windows expect this unix style separator ?
 
 
53         memcpy(filePath, envfilePath, envFilePathLength*sizeof(char));
 
56         memcpy(filePath + envFilePathLength + 1 + fileNameLength, ".log", 4*sizeof(char));
 
Interesting that you feel it necessary to use sizeof(char) when clearly the whole logic, eg see :
 
 
 50         auto filePathSize = envFilePathLength + 1 + fileNameLength + 5; //1 for "/", 5 for ".log" and 0;
 
assumes it is 1 ...
 
 PrintDebugString("couldnot open file %s", filePath);

couldnot -> could not

-phil.


On 3/26/19 2:45 AM, Krishna Addepalli wrote:

Hi Phil,

 

Per our discussion, I have changed the JAVA_ACCESSBRIDGE_LOGFILE to JAVA_ACCESSBRIDGE_LOGDIRECTORY to reflect that it accepts only a directory value in the variable.

I have also changed the code in AccessBridgeDebug.cpp appropriately. 

So, currently, the code will look for the environment variable, which should contain path to the directory, and two log files namely "java_access_bridge.log" and "windows_access_bridge.log" will be created.

 

Link to the JDK Issue: https://bugs.openjdk.java.net/browse/JDK-8219914

Here is the webrev: http://cr.openjdk.java.net/~kaddepalli/8219914/webrev00/

 

 

Thanks,

Krishna

 

 
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