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Fix n-body visualization

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This commit is contained in:
dcodeIO
2018-07-22 02:55:46 +02:00
parent 813d2e33c8
commit a1e2071da6
15 changed files with 134 additions and 43 deletions
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30
std/assembly/collector/itcm.ts
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@ -35,21 +35,23 @@ var state = State.INIT;
var white = 0;
// From and to spaces
var from: ManagedObjectSet;
var to: ManagedObjectSet;
var from: ManagedObjectList;
var to: ManagedObjectList;
var iter: ManagedObject;
// ╒═══════════════ Managed object layout (32-bit) ════════════════╕
// 3 2 1
// 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 bits
// ├─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┼─┴─┴─┤ ┐
// │ next │ F │ ◄─┐ = nextWithFlags
// ├─────────────────────────────────────────────────────────┴─────┤ │ usize
// ├─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┴─┼─┼─┴─┤ ┐
// │ next │0│ C │ ◄─┐ = nextWithColor
// ├─────────────────────────────────────────────────────────┴─┴───┤ │ usize
// │ prev │ ◄─┘
// ╞═══════════════════════════════════════════════════════════════╡ SIZE ┘
// ├───────────────────────────────────────────────────────────────┤
// │ visitFn │
// ╞═══════════════════════════════════════════════════════════════╡ SIZE ┘ ◄─ user-space reference
// │ ... data ... │
// └───────────────────────────────────────────────────────────────┘
// F: flags
// C: color
/** Represents a managed object in memory, consisting of a header followed by the object's data. */
@unmanaged
@ -61,18 +63,18 @@ class ManagedObject {
/** Pointer to the previous object. */
prev: ManagedObject;
/** Visitor function called with the payload reference. */
/** Visitor function called with the user-space reference. */
visitFn: (ref: usize) => void;
/** Size of a managed object after alignment. */
static readonly SIZE: usize = (offsetof<ManagedObject>() + AL_MASK) & ~AL_MASK;
/** Gets the pointer to the next object in the list. */
/** Gets the pointer to the next object. */
get next(): ManagedObject {
return changetype<ManagedObject>(this.nextWithColor & ~3);
}
/** Sets the pointer to the next object in the list. */
/** Sets the pointer to the next object. */
set next(obj: ManagedObject) {
this.nextWithColor = changetype<usize>(obj) | (this.nextWithColor & 3);
}
@ -107,9 +109,9 @@ class ManagedObject {
}
}
/** A set of managed objects. Used for the from and to spaces. */
/** A list of managed objects. Used for the from and to spaces. */
@unmanaged
class ManagedObjectSet extends ManagedObject {
class ManagedObjectList extends ManagedObject {
/** Inserts an object. */
push(obj: ManagedObject): void {
@ -135,10 +137,10 @@ function step(): void {
switch (state) {
case State.INIT: {
if (TRACE) trace("gc~step/INIT");
from = changetype<ManagedObjectSet>(memory.allocate(ManagedObject.SIZE));
from = changetype<ManagedObjectList>(memory.allocate(ManagedObject.SIZE));
from.visitFn = changetype<(ref: usize) => void>(<u32>-1); // would error
from.clear();
to = changetype<ManagedObjectSet>(memory.allocate(ManagedObject.SIZE));
to = changetype<ManagedObjectList>(memory.allocate(ManagedObject.SIZE));
to.visitFn = changetype<(ref: usize) => void>(<u32>-1); // would error
to.clear();
iter = to;