11. Toad Notes Go language--memory splitter

This is a created article in which the information may have evolved or changed.

11. Toad Notes Go language--memory splitter

Memory allocator, also known as Memoryallocator.

Core: Autonomous management, Cache reuse, no lock allocation.

Memory management takes the page as the basic unit, and multiple address contiguous pages form a block of memory.

Pages are page, and continuous pages are span.

Press 8 times times to divide small objects into various size specifications. Size class.

Three-tier management organization

The three-tier management bodies are shown in Figure 1:

The algorithm relies on successive addresses to reserve a larger address space. Figure 2below:

Saves the span pointer by page.

Checks to see if the object belongs to span.

Checks whether adjacent spans can be merged.

Quickly allocate and expand as needed.

Figure 3below:

Garbage collection

The garbage collector raises the recycle operation. Figure 4below:

Allocate memory for Management objects without occupying reserved addresses

Figure 5: