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Rework static memory segment creation; Fix stdlib gc hooks not marking own fields; Align everything to 8 bytes that might be touched by GC

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This commit is contained in:
dcodeIO
2018-08-04 00:36:59 +02:00
parent 61de7cf962
commit 631478c7c9
61 changed files with 11944 additions and 5286 deletions
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27
std/assembly/allocator/arena.ts
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@ -15,24 +15,21 @@ var offset: usize = startOffset;
// Memory allocator interface
@global export function __memory_allocate(size: usize): usize {
if (size) {
if (size > MAX_SIZE_32) unreachable();
let ptr = offset;
let newPtr = (ptr + size + AL_MASK) & ~AL_MASK;
let pagesBefore = memory.size();
if (newPtr > <usize>pagesBefore << 16) {
let pagesNeeded = ((newPtr - ptr + 0xffff) & ~0xffff) >>> 16;
let pagesWanted = max(pagesBefore, pagesNeeded); // double memory
if (memory.grow(pagesWanted) < 0) {
if (memory.grow(pagesNeeded) < 0) {
unreachable(); // out of memory
}
if (size > MAX_SIZE_32) unreachable();
var ptr = offset;
var newPtr = (ptr + max<usize>(size, 1) + AL_MASK) & ~AL_MASK;
var pagesBefore = memory.size();
if (newPtr > <usize>pagesBefore << 16) {
let pagesNeeded = ((newPtr - ptr + 0xffff) & ~0xffff) >>> 16;
let pagesWanted = max(pagesBefore, pagesNeeded); // double memory
if (memory.grow(pagesWanted) < 0) {
if (memory.grow(pagesNeeded) < 0) {
unreachable(); // out of memory
}
}
offset = newPtr;
return ptr;
}
return 0;
offset = newPtr;
return ptr;
}
@global export function __memory_free(ptr: usize): void { /* nop */ }