Garbage collector
A method for use with a garbage collector to provide garbage collection is disclosed. The garbage collection is a concurrent garbage collection provided in a dedicated thread concurrently running in a computing device with a mutator thread. The concurrent garbage collection is triggered based on a dynamically tunable parameter from a previous garbage collection in closed loop feedback.
1. A method of garbage collection in a computing device, comprising:
providing a concurrent garbage collection in a dedicated thread concurrently running in the computing device with a mutator thread;
wherein the concurrent garbage collection is triggered based on a dynamically tunable parameter from a previous garbage collection in a closed feedback loop, wherein the tunable parameter includes an amount of free space at a garbage collection trigger having a preselected goal amount of memory space and an error amount of memory space.
2. The method of claim 1 comprising:
initializing garbage collection with the preselected goal amount of memory space and an additional amount of memory space.
3. The method of claim 1 wherein the preselected goal amount and the error amount are ratios.
4. The method of claim 1 wherein the concurrent garbage collection is triggered based on the amount of free space at the garbage collection trigger of the previous garbage collection multiplied by a constant.
5. The method of claim 1 wherein an output includes an amount of memory that will be consumed in the free space before the next concurrent garbage collection is triggered.
6. The method of claim 1 wherein the preselected goal amount is user configurable.
7. The method of claim 1 further including younger generation garbage collection.
8. The method of claim 7 wherein the younger generation garbage collection is non-concurrent garbage collection.
9. A system to reclaim memory, comprising:
a memory device to store a set of instructions; and
a processor to execute the set of instructions to:
provide a concurrent garbage collection in a dedicated thread concurrently running in the computing device with a mutator thread;
wherein the concurrent garbage collection is triggered based on closed loop feedback from a previous garbage collection including a present error value and a past error value.
10. The system of claim 9 wherein the past error value is a previous trigger.
11. The system of claim 10 where the previous trigger is an amount of free space at the start of a previous garbage collection.
12. The system of claim 9 wherein the present error value is an error amount multiplied by a constant.
13. The system of claim 12 wherein the error amount is a difference between a previous amount of free memory space and a goal amount of free memory space.
14. The system of claim 9 further comprising a future trend amount.
15. A computer readable medium to store computer readable instructions to control a processor to reclaim memory, the instructions comprising:
provide a concurrent garbage collection in a dedicated thread concurrently running in the computing device with a mutator thread;
wherein the concurrent garbage collection is triggered based on a dynamically tunable parameter from a previous garbage collection in a closed loop feedback including a present error value and a past error value.
16. The computer readable medium of claim 15 further comprising a future trend amount.