Eclipse OMR project provides a reusable Garbage Collector

[Dibyendu Majumdar via Digitalmars-d]

On Saturday, 3 December 2016 at 10:29:02 UTC, Dibyendu Majumdar 
wrote:
>> That said, let's look at the API:
>>
>> omrobjectptr_t OMR_GC_Allocate(OMR_VMThread * omrVMThread, 
>> uintptr_t allocationCategory, uintptr_t size, uintptr_t 
>> allocateFlags);
>>
>> omrobjectptr_t OMR_GC_AllocateNoGC(OMR_VMThread * omrVMThread, 
>> uintptr_t allocationCategory, uintptr_t size, uintptr_t 
>> allocateFlagss);
>>
>> omr_error_t OMR_GC_SystemCollect(OMR_VMThread* omrVMThread, 
>> uint32_t gcCode);
>>
>> First parameter is a pointer to an OMR thread. I'd have to 
>> rewrite core.thread to use OMR's thread system, or maybe I 
>> could fake OMR threads with enough effort. That's another 
>> barrier.
>>
>
> I think all GCs need to interact with threads so there has to 
> be some linkage between the thread sub-system and GC.
>
> I saw a slide deck or some docs that explained the requirements 
> to use OMR GC. Unfortunately I did not save a link and cannot 
> locate this now. I will post a link if I find it again.
>
> It said that the OMR expects objects to be allocated on 8-byte 
> aligned memory and it requires one GC byte - which is assumed 
> to be at the start of the allocated object but can be changed 
> if required.
>

Here is the video that describes how to use the GC. Says initial 
integration should take <100 lines of code! GC details are about 
30 minutes into the talk.

https://developer.ibm.com/open/videos/eclipse-omr-tech-talk/