take a step back

This commit is contained in:
dcode
2019-03-14 04:33:58 +01:00
parent e38f627c8b
commit 6163a73ab5
30 changed files with 645 additions and 1287 deletions

View File

@ -2,28 +2,20 @@ import "allocator/tlsf";
var register_ref: usize = 0;
@global namespace gc {
export function register(ref: usize): void {
register_ref = ref;
}
export function link(ref: usize, parentRef: usize): void {
}
export function collect(): void {
}
@global function __gc_register(ref: usize): void {
register_ref = ref;
}
import {
HEADER,
HEADER_SIZE,
HEADER_MAGIC,
ADJUST,
ALLOC,
REALLOC,
FREE,
REGISTER,
ArrayBufferBase,
StringBase
} from "runtime";
var link_ref: usize = 0;
var link_parentRef: usize = 0;
@global function __gc_link(ref: usize, parentRef: usize): void {
link_ref = ref;
link_parentRef = parentRef;
}
@global function __gc_collect(): void {
}
class A {}
class B {}
@ -33,42 +25,42 @@ function isPowerOf2(x: i32): bool {
return x != 0 && (x & (x - 1)) == 0;
}
assert(ADJUST(0) > 0);
assert(runtime.adjust(0) > 0);
for (let i = 0; i < 9000; ++i) {
assert(isPowerOf2(ADJUST(i)));
assert(isPowerOf2(runtime.adjust(i)));
}
var barrier1 = ADJUST(0);
var barrier1 = runtime.adjust(0);
var barrier2 = barrier1 + 1;
while (ADJUST(barrier2 + 1) == ADJUST(barrier2)) ++barrier2;
while (runtime.adjust(barrier2 + 1) == runtime.adjust(barrier2)) ++barrier2;
var barrier3 = barrier2 + 1;
while (ADJUST(barrier3 + 1) == ADJUST(barrier3)) ++barrier3;
while (runtime.adjust(barrier3 + 1) == runtime.adjust(barrier3)) ++barrier3;
trace("barrier1", 1, barrier1);
trace("barrier2", 1, barrier2);
trace("barrier3", 1, barrier3);
var ref1 = ALLOC(1);
var header1 = changetype<HEADER>(ref1 - HEADER_SIZE);
assert(header1.classId == HEADER_MAGIC);
var ref1 = runtime.alloc(1);
var header1 = changetype<runtime.Header>(ref1 - runtime.Header.SIZE);
assert(header1.classId == runtime.Header.MAGIC);
assert(header1.payloadSize == 1);
assert(ref1 == REALLOC(ref1, barrier1)); // same segment
assert(ref1 == runtime.realloc(ref1, barrier1)); // same segment
assert(header1.payloadSize == barrier1);
var ref2 = REALLOC(ref1, barrier2);
var ref2 = runtime.realloc(ref1, barrier2);
assert(ref1 != ref2); // moves
var header2 = changetype<HEADER>(ref2 - HEADER_SIZE);
var header2 = changetype<runtime.Header>(ref2 - runtime.Header.SIZE);
assert(header2.payloadSize == barrier2);
FREE(ref2);
var ref3 = ALLOC(barrier2);
runtime.free(ref2);
var ref3 = runtime.alloc(barrier2);
assert(ref1 == ref3); // reuses space of ref1 (free'd in realloc), ref2 (explicitly free'd)
var ref4 = ALLOC(barrier1);
REGISTER<A>(ref4); // should call __REGISTER_IMPL
var ref4 = runtime.alloc(barrier1);
runtime.register<A>(ref4); // should call __REGISTER_IMPL
assert(register_ref == ref4);
var header4 = changetype<HEADER>(register_ref - HEADER_SIZE);
var header4 = changetype<runtime.Header>(register_ref - runtime.Header.SIZE);
assert(header4.classId == gc.classId<A>());
assert(header4.payloadSize == barrier1);
var ref5 = ALLOC(10);
assert(changetype<ArrayBufferBase>(ref5).byteLength == 10);
assert(changetype<StringBase>(ref5).length == 5);
var ref5 = runtime.alloc(10);
assert(changetype<ArrayBuffer>(ref5).byteLength == 10);
assert(changetype<String>(ref5).length == 5);