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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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40
std/assembly/allocator/tlsf.ts
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@ -458,34 +458,30 @@ var ROOT: Root = changetype<Root>(0);
}
// search for a suitable block
var data: usize = 0;
if (size) {
if (size > Block.MAX_SIZE) unreachable();
// 32-bit MAX_SIZE is 1 << 30 and itself aligned, hence the following can't overflow MAX_SIZE
size = max<usize>((size + AL_MASK) & ~AL_MASK, Block.MIN_SIZE);
if (size > Block.MAX_SIZE) unreachable();
let block = root.search(size);
if (!block) {
// 32-bit MAX_SIZE is 1 << 30 and itself aligned, hence the following can't overflow MAX_SIZE
size = max<usize>((size + AL_MASK) & ~AL_MASK, Block.MIN_SIZE);
// request more memory
let pagesBefore = memory.size();
let pagesNeeded = <i32>(((size + 0xffff) & ~0xffff) >>> 16);
let pagesWanted = max(pagesBefore, pagesNeeded); // double memory
if (memory.grow(pagesWanted) < 0) {
if (memory.grow(pagesNeeded) < 0) {
unreachable(); // out of memory
}
var block = root.search(size);
if (!block) {
// request more memory
let pagesBefore = memory.size();
let pagesNeeded = <i32>(((size + 0xffff) & ~0xffff) >>> 16);
let pagesWanted = max(pagesBefore, pagesNeeded); // double memory
if (memory.grow(pagesWanted) < 0) {
if (memory.grow(pagesNeeded) < 0) {
unreachable(); // out of memory
}
let pagesAfter = memory.size();
root.addMemory(<usize>pagesBefore << 16, <usize>pagesAfter << 16);
block = assert(root.search(size)); // must be found now
}
assert((block.info & ~TAGS) >= size);
data = root.use(<Block>block, size);
let pagesAfter = memory.size();
root.addMemory(<usize>pagesBefore << 16, <usize>pagesAfter << 16);
block = assert(root.search(size)); // must be found now
}
return data;
assert((block.info & ~TAGS) >= size);
return root.use(<Block>block, size);
}
/** Frees the chunk of memory at the specified address. */