EXSWHTEC-9 - Implement additional tests for hipIpcCloseMemHandle

[mirza-halilcevic]

• Verify that memory stays mapped when reference count is non zero
• Verify that memory stays mapped if handle is closed in a second process
• Verify that attempting to close handle in the process that created it causes an error.

[mirza-halilcevic]

This won't build on Windows I believe.

@chrispaquot You're right. We added a Linux-only guard around the tests.

[chrispaquot]

This won't build on Windows I believe.

@chrispaquot You're right. We added a Linux-only guard around the tests.

Can't we just remove it from the Windows build?

[mirza-halilcevic]

This won't build on Windows I believe.

@chrispaquot You're right. We added a Linux-only guard around the tests.

Can't we just remove it from the Windows build?

The test is now removed from the Windows build. Please proceed with the review.

[mangupta]

@mirza-halilcevic : Some tests fail CI. Details shared separately.

[mirza-halilcevic]

@mirza-halilcevic : Some tests fail CI. Details shared separately.

PR updated, you can proceed with the merge.