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now we're cookin

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ed
2026-06-15 01:59:18 -04:00
parent e7d0b7a4b3
commit 68fd4ca791
6 changed files with 269 additions and 236 deletions
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code/duffle/memory.h
+5 -4
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@@ -100,14 +100,15 @@ FI_ void farena_init(FArena_R arena, Slice mem) { assert(arena != nullptr);
arena->used = 0;
}
FI_ FArena farena_make(Slice mem) { FArena a; farena_init(& a, mem); return a; }
I_ Slice farena_push(FArena_R arena, U4 amount, Opt_farena o) {
I_ Slice farena_push(FArena_R arena, U4 amount, Opt_farena o) {
if (amount == 0) { return (Slice){}; }
U4 desired = amount * (o.type_width == 0 ? 1 : o.type_width);
U4 to_commit = align_pow2(desired, o.alignment ? o.alignment : MEM_ALIGNMENT_DEFAULT);
mem_bump(arena->start, arena->capacity - to_commit, & arena->used, to_commit);
return (Slice){ arena->start + arena->used, to_commit };
U4 ptr = arena->start + arena->used;
mem_bump(arena->start, arena->capacity, & arena->used, to_commit);
return (Slice){ ptr, to_commit };
}
FI_ void farena_reset(FArena_R arena) { arena->used = 0; }
FI_ void farena_reset (FArena_R arena) { arena->used = 0; }
FI_ void farena_rewind(FArena_R arena, U4 save_point) {
U4 end = arena->start + arena->used; assert_bounds(save_point, arena->start, end);
arena->used -= save_point - arena->start;