fluencelabs/assemblyscript
1
0
Fork 0
mirror of https://github.com/fluencelabs/assemblyscript synced 2025-06-14 15:31:31 +00:00
Code Issues Projects Releases Wiki Activity

More memory allocators

Browse Source
This commit is contained in:
dcodeIO
2018-02-02 04:21:06 +01:00
parent 8d4be9a714
commit 4ce8c7a6b0
4 changed files with 50 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
examples/tlsf/assembly/tlsf.ts
View File

@ -323,9 +323,9 @@ class Root {
/**
* Uses the specified free block, removing it from internal maps and
* splitting it if possible.
* splitting it if possible, and returns its data pointer.
*/
use(block: Block, size: usize): void {
use(block: Block, size: usize): usize {
assert(block.info & FREE); // must be free so we can use it
assert(size >= Block.MIN_SIZE && size < Block.MAX_SIZE); // must be valid
assert(!(size & AL_MASK)); // size must be aligned so the new block is
@ -349,6 +349,8 @@ class Root {
var right: Block = assert(block.right); // can't be null (tail)
right.info &= ~LEFT_FREE;
}
return changetype<usize>(block) + Block.INFO;
}
/** Adds more memory to the pool. */
@ -409,9 +411,9 @@ export function allocate_memory(size: usize): usize {
var rootOffset = (HEAP_BASE + AL_MASK) & ~AL_MASK;
ROOT = root = changetype<Root>(rootOffset);
root.flMap = 0;
for (var fl = 0; fl < FL_BITS; ++fl) {
for (var fl: usize = 0; fl < FL_BITS; ++fl) {
root.setSLMap(fl, 0);
for (var sl = 0; sl < SL_SIZE; ++sl)
for (var sl: u32 = 0; sl < SL_SIZE; ++sl)
root.setHead(fl, sl, null);
}
root.addMemory(rootOffset + Root.SIZE, current_memory() << 16);
@ -436,8 +438,7 @@ export function allocate_memory(size: usize): usize {
}
assert((block.info & ~TAGS) >= size);
root.use(block, size);
data = changetype<usize>(block) + Block.INFO;
data = root.use(block, size);
}
return data;
@ -454,4 +455,5 @@ export function free_memory(data: usize): void {
}
}
export { set_memory };
// For stand-alone usage, e.g., in tests
export { move_memory, set_memory, compare_memory };