View Source SilverOrb.Arena (SilverOrb v0.0.10)
Arena allocation.
See https://www.rfleury.com/p/untangling-lifetimes-the-arena-allocator
defmodule ArenaExample do
SilverOrb.Arena.def(First, pages: 2)
SilverOrb.Arena.def(Second, pages: 4, max_pages: 10)
defw example(), a: I32.UnsafePointer, b: I32.UnsafePointer do
a = First.alloc(4)
Memory.store!(I32, a, 42)
b = Second.alloc(4)
Memory.store!(I32, b, 99)
assert!(a !== First.alloc(4))
First.rewind()
assert!(a === First.alloc(4))
end
endSummary
Functions
Defines an arena of memory. An Elixir module with your passed name is defined with alloc!/1 and rewind/0 functions.
Match strings to content of passed arena_mod.
Convert this module’s Orb definition to WebAssembly text (Wat) format.
Functions
Defines an arena of memory. An Elixir module with your passed name is defined with alloc!/1 and rewind/0 functions.
Options
When defining an arena, two options can be given:
:pages— The number of pages to allocate for this arena. The global memory is increased by this count.:max_pages— The maxmimum number of pages this can increase the global memory by usingOrb.Memory.grow!/1. Only the last arena can supportmax_pages, as otherwise multiple arenas each growing in size will end up overlapping.
Match strings to content of passed arena_mod.
Convert this module’s Orb definition to WebAssembly text (Wat) format.