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test a few things

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dcode
2019-03-09 02:04:08 +01:00
parent 4f1a971a61
commit 0c537c3363
6 changed files with 6803 additions and 26 deletions
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20
std/assembly/internal/runtime.ts
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@ -25,7 +25,7 @@ export class HEADER {
/** Magic value used to validate common runtime headers. */
@inline export const HEADER_MAGIC: u32 = 0xA55E4B17;
/** Aligns an allocation to actual block size. */
/** Aligns an allocation to actual block size. Primarily targets TLSF. */
export function ALIGN(payloadSize: usize): usize {
// round up to power of 2, e.g. with HEADER_SIZE=8:
// 0 -> 2^3 = 8
@ -36,14 +36,6 @@ export function ALIGN(payloadSize: usize): usize {
return <usize>1 << <usize>(<u32>32 - clz<u32>(payloadSize + HEADER_SIZE - 1));
}
/** Gets to the common runtime header of the specified reference. */
export function UNREF(ref: usize): HEADER {
assert(ref >= HEAP_BASE + HEADER_SIZE); // must be a heap object
var header = changetype<HEADER>(ref - HEADER_SIZE);
assert(header.classId == HEADER_MAGIC); // must be unregistered
return header;
}
/** Allocates a new object and returns a pointer to its payload. */
export function ALLOC(payloadSize: u32): usize {
var header = changetype<HEADER>(memory.allocate(ALIGN(payloadSize)));
@ -60,7 +52,7 @@ export function ALLOC(payloadSize: u32): usize {
/** Reallocates an object if necessary. Returns a pointer to its (moved) payload. */
export function REALLOC(ref: usize, newPayloadSize: u32): usize {
var header = UNREF(ref);
var header = changetype<HEADER>(ref - HEADER_SIZE);
var payloadSize = header.payloadSize;
if (payloadSize < newPayloadSize) {
let newAlignedSize = ALIGN(newPayloadSize);
@ -93,13 +85,17 @@ export function REALLOC(ref: usize, newPayloadSize: u32): usize {
/** Frees an object. Must not have been registered with GC yet. */
export function FREE(ref: usize): void {
var header = UNREF(ref);
assert(ref >= HEAP_BASE + HEADER_SIZE); // must be a heap object
var header = changetype<HEADER>(ref - HEADER_SIZE);
assert(header.classId == HEADER_MAGIC); // must be unregistered
memory.free(changetype<usize>(header));
}
/** Registers a managed object with GC. Cannot be changed anymore afterwards. */
export function REGISTER<T>(ref: usize, parentRef: usize): void {
var header = UNREF(ref);
assert(ref >= HEAP_BASE + HEADER_SIZE); // must be a heap object
var header = changetype<HEADER>(ref - HEADER_SIZE);
assert(header.classId == HEADER_MAGIC); // must be unregistered
header.classId = __rt_classid<T>();
if (GC) __REGISTER_IMPL(ref, parentRef); // tslint:disable-line
}