yonote/yjs
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gc implementation

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This commit is contained in:
Kevin Jahns
2015-07-26 16:03:13 +00:00
parent c8ded24842
commit 06e7caab2d
6 changed files with 58 additions and 22 deletions
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20
src/OperationStores/Memory.js
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@@ -125,6 +125,12 @@ Y.Memory = (function () { // eslint-disable-line no-unused-vars
this.os = store.os
this.ds = store.ds
}
* checkDeleteStoreForState (state) {
var n = this.ds.findNodeWithUpperBound([state.user, state.clock])
if (n !== null && n.val.id[0] === state.user) {
state.clock = Math.max(state.clock, n.val.id[1] + n.val.len)
}
}
* getDeleteSet (id) {
return this.ds.toDeleteSet(id)
}
@@ -196,14 +202,16 @@ Y.Memory = (function () { // eslint-disable-line no-unused-vars
var endPos = endState.clock
this.os.iterate([user, startPos], [user, endPos], function (op) {// eslint-disable-line
ops.push(Struct[op.struct].encode(op))
if (!op.gc) {
ops.push(Struct[op.struct].encode(op))
}
})
}
var res = []
for (var op of ops) {
res.push(yield* this.makeOperationReady(startSS, op))
var state = startSS[op.id[0]] || 0
if (state === op.id[1]) {
if (state === op.id[1] || true) {
startSS[op.id[0]] = state + 1
} else {
throw new Error('Unexpected operation!')
@@ -218,8 +226,8 @@ Y.Memory = (function () { // eslint-disable-line no-unused-vars
var clock
while (o.right != null) {
// while unknown, go to the right
clock = ss[o.right[0]]
if (clock != null && o.right[1] < clock) {
clock = ss[o.right[0]] || 0
if (o.right[1] < clock && !o.gc) {
break
}
o = yield* this.getOperation(o.right)
@@ -227,8 +235,8 @@ Y.Memory = (function () { // eslint-disable-line no-unused-vars
op.right = o.right
while (o.left != null) {
// while unknown, go to the right
clock = ss[o.left[0]]
if (clock != null && o.left[1] < clock) {
clock = ss[o.left[0]] || 0
if (o.left[1] < clock && !o.gc) {
break
}
o = yield* this.getOperation(o.left)