workshopsoft/ludic
2
0
Fork 0
Code Issues Pull requests Projects Releases 26 Packages Wiki Activity Actions

fix(render3d): nothing allocated in the steady state - the Vulkan allocator reuses its records

Browse source 
gvk_mem_new made a one-slot []pointer per allocation, and turned the requirement's size and
alignment into strings to read them as ints; gvk_list_drop_last rebuilt the spare-record list to
drop its last entry; gvk_mem_id did the string round trip on every free. One slot is kept
(gvk_map_slot), int() truncates a long, the spare list pops. Every Text.to_int(string(x)) in
render3d is int(x) now.

Vk.heap_bytes() (vk_mac.ll: malloc_zone_statistics' size_in_use; 0 on Windows) and
examples/rendering/steady.ludic, in the suite: a buffer released and made again 5000 times and
600 whole frames gain 0 bytes each - the allocator before this, 1,120,000 over the 5000.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
Orkun ÇAKILKAYA 2026-09-28 11:14:56 +03:00
parent 3915af34c2
commit 866037a0d7
9 changed files with 119 additions and 19 deletions
Download patch file Download diff file Expand all files Collapse all files

2
runtime/native/vk.ludic
View file

@ -28,6 +28,8 @@ import "vk_api.ludic"
# Once a frame: on macOS drains what MoltenVK and the layer autoreleased during the last one (a
# program pumping its own events has no other pool); nothing elsewhere.
extern function vk_frame_pool() = "lvk_frame_pool"
# malloc's live bytes (macOS; 0 elsewhere): a test that a path allocates nothing, frame after frame
extern function vk_heap_bytes() -> long = "lvk_heap_bytes"
extern function vk_sl_prefer(on: int) = "lvk_sl_prefer"
extern function vk_sl_active() -> int = "lvk_sl_active"
extern function vk_sl_init(pref: pointer, sdk_version: long) -> int = "lsl_slInit"

14
runtime/native/vk_mac.ll
View file

@ -250,3 +250,17 @@ push:
store ptr %p, ptr @lvk_pool
ret void
}
; ---- the heap in use --------------------------------------------------------------------------
; malloc's live bytes across the default zones, for a test that proves a path allocates nothing in
; its steady state (render3d's examples/rendering/steady.ludic). malloc_statistics_t is four
; words: blocks_in_use (u32, padded), size_in_use, max_size_in_use, size_allocated.
declare void @malloc_zone_statistics(ptr, ptr)
define i64 @lvk_heap_bytes() {
entry:
%st = alloca [4 x i64], align 8
call void @malloc_zone_statistics(ptr null, ptr %st)
%p = getelementptr [4 x i64], ptr %st, i32 0, i32 1
%n = load i64, ptr %p
ret i64 %n
}

6
runtime/native/vk_win.ll
View file

@ -369,3 +369,9 @@ define void @lvk_frame_pool() {
entry:
ret void
}
; the heap's live bytes are asked for on the Mac only (vk_mac.ll); 0 here, and a test skips its check
define i64 @lvk_heap_bytes() {
entry:
ret i64 0
}