[15] RFR(S): 8247421: [TESTBUG] ReturnBlobToWrongHeapTest.java failed allocating blob

[Vladimir Kozlov]

Good.

Thanks,
Vladimir

On 6/12/20 12:37 PM, Nils Eliasson wrote:
> Hi,
> 
> This tries to fill up one segment of the code cache with large blobs, and then fill up the rest with small code blobs. 
> In one test run the large code blob happened to fill up the code heap precisely, leaving no room for any small code 
> blob. That made the test fail.
> 
> "CodeHeap 'non-profiled nmethods': size=11248Kb used=11248Kb max_used=11248Kb free=0Kb
>   bounds [0x0000000116701000, 0x00000001171fd000, 0x00000001171fd000]"
> 
> My fix allocates one small blob first, then continues on with the large blobs, and finally filling up the rest with 
> small blobs. In that way there are always a small blob allocated.
> 
> Bug: https://bugs.openjdk.java.net/browse/JDK-8247421
> Webrev: http://cr.openjdk.java.net/~neliasso/8247421/webrev.01/
> 
> Please review,
> Nils Eliasson