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implement __runtime_flags

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dcode
2019-04-05 01:59:01 +02:00
parent ed32a4c8ba
commit a9e4813798
90 changed files with 14549 additions and 7499 deletions
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64
std/assembly/util/runtime.ts
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@ -46,6 +46,20 @@ export function adjust(payloadSize: usize): usize {
return <usize>1 << <usize>(<u32>32 - clz<u32>(payloadSize + HEADER_SIZE - 1));
}
/** Allocates the memory necessary to represent a managed object of the specified size. */
// @ts-ignore: decorator
@unsafe
export function allocate(payloadSize: usize): usize {
var header = changetype<HEADER>(memory.allocate(adjust(payloadSize)));
header.classId = HEADER_MAGIC;
header.payloadSize = payloadSize;
if (isDefined(__ref_collect)) {
header.reserved1 = 0;
header.reserved2 = 0;
}
return changetype<usize>(header) + HEADER_SIZE;
}
/** Reallocates the memory of a managed object that turned out to be too small or too large. */
// @ts-ignore: decorator
@unsafe
@ -91,3 +105,53 @@ export function reallocate(ref: usize, newPayloadSize: usize): usize {
header.payloadSize = newPayloadSize;
return ref;
}
/** Discards the memory of a managed object that hasn't been registered yet. */
// @ts-ignore: decorator
@unsafe
export function discard(ref: usize): void {
if (!ASC_NO_ASSERT) {
assert(ref > HEAP_BASE); // must be a heap object
let header = changetype<HEADER>(ref - HEADER_SIZE);
assert(header.classId == HEADER_MAGIC);
memory.free(changetype<usize>(header));
} else {
memory.free(changetype<usize>(ref - HEADER_SIZE));
}
}
/** Registers a managed object of the kind represented by the specified runtime id. */
// @ts-ignore: decorator
@unsafe
export function register(ref: usize, id: u32): usize {
if (!ASC_NO_ASSERT) {
assert(ref > HEAP_BASE); // must be a heap object
let header = changetype<HEADER>(ref - HEADER_SIZE);
assert(header.classId == HEADER_MAGIC);
header.classId = id;
} else {
changetype<HEADER>(ref - HEADER_SIZE).classId = id;
}
if (isDefined(__ref_register)) __ref_register(ref);
return ref;
}
/** Allocates and registers, but doesn't initialize the data of, a new `Array` of the specified length and element alignment. */
// @ts-ignore: decorator
@unsafe
export function newArray(length: i32, alignLog2: usize, id: u32, data: usize = 0): usize {
// TODO: This API isn't great, but the compiler requires it for array literals anyway,
// that is when an array literal is encountered and its data is static, this function is
// called and the static buffer provided as `data`. This function can also be used to
// create typed arrays in that `Array` also implements `ArrayBufferView` but has an
// additional `.length_` property that remains unused overhead for typed arrays.
var array = newObject(offsetof<i32[]>(), id);
var bufferSize = <u32>length << alignLog2;
var buffer = newArrayBuffer(bufferSize);
changetype<ArrayBufferView>(array).data = changetype<ArrayBuffer>(buffer); // links
changetype<ArrayBufferView>(array).dataStart = buffer;
changetype<ArrayBufferView>(array).dataLength = bufferSize;
store<i32>(changetype<usize>(array), length, offsetof<i32[]>("length_"));
if (data) memory.copy(buffer, data, <usize>bufferSize);
return array;
}