nv-facutil-strict-aloc

• simulate a mem allocator
• simple version of nv-mem-offset-mgmt
• aloc how many MUST free same size

install

• npm install nv-facutil-strict-aloc

splitted

• npm install xxx

usage

  const x   = require("nv-facutil-strict-aloc");

example

> var zone = x(10,Uint8Array)
> zone
Zone(2) [
  0,
  10,
  store: Uint8Array(10) [
    0, 0, 0, 0, 0,
    0, 0, 0, 0, 0
  ],
  szd: {},
  si: 0
]
> zone.aloc(2)
0
> zone
Zone(2) [
  2,
  10,
  store: Uint8Array(10) [
    0, 0, 0, 0, 0,
    0, 0, 0, 0, 0
  ],
  szd: { '0': 2 },
  si: 0
]
> zone.aloc(4)
2
> zone
Zone(2) [
  6,
  10,
  store: Uint8Array(10) [
    0, 0, 0, 0, 0,
    0, 0, 0, 0, 0
  ],
  szd: { '0': 2, '2': 4 },
  si: 2
]
> zone.aloc(3)
6
> zone
Zone(2) [
  9,
  10,
  store: Uint8Array(10) [
    0, 0, 0, 0, 0,
    0, 0, 0, 0, 0
  ],
  szd: { '0': 2, '2': 4, '6': 3 },
  si: 2
]
> zone.aloc(1)
9
> zone
Zone(0) [
  store: Uint8Array(10) [
    0, 0, 0, 0, 0,
    0, 0, 0, 0, 0
  ],
  szd: { '0': 2, '2': 4, '6': 3, '9': 1 },
  si: 0
]
> zone.aloc(1)
-1
> zone.free(6)
true
> 
> zone
Zone(2) [
  6,
  9,
  store: Uint8Array(10) [
    0, 0, 0, 0, 0,
    0, 0, 0, 0, 0
  ],
  szd: { '0': 2, '2': 4, '9': 1 },
  si: 0
]
> 

METHODS

    .aloc :  (size: @must_ge_1 ) -> index  
    .free :  (index)             -> Boolean                
    .free_without_check: (index)   -> Void
    .unset:  (index,empty=0) -> Boolean
    .unset_without_check: (index,empty=0) -> Void

APIS

LICENSE

• ISC