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beginning to lift vmem ops out of the arena

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ed
2025-02-05 13:42:36 -05:00
parent 8936ae9aa7
commit 268271e4a7
15 changed files with 1017 additions and 170 deletions
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code/base/arena.c
+70 -8
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@@ -11,7 +11,8 @@
//- rjf: arena creation/destruction
internal Arena *
#if 0
internal Arena*
arena_alloc_(ArenaParams *params)
{
// rjf: round up reserve/commit sizes
@@ -67,17 +68,78 @@ arena_alloc_(ArenaParams *params)
AsanUnpoisonMemoryRegion(base, ARENA_HEADER_SIZE);
return arena;
}
#endif
internal void
arena_release(Arena *arena)
Arena*
arena_alloc_(ArenaParams* params)
{
for(Arena *n = arena->current, *prev = 0; n != 0; n = prev)
{
prev = n->prev;
os_release(n, n->res);
}
// rjf: round up reserve/commit sizes
U64 reserve_size = params->reserve_size;
U64 commit_size = params->commit_size;
if(params->flags & ArenaFlag_LargePages)
{
reserve_size = align_pow2(reserve_size, os_get_system_info()->large_page_size);
commit_size = align_pow2(commit_size, os_get_system_info()->large_page_size);
}
else
{
reserve_size = align_pow2(reserve_size, os_get_system_info()->page_size);
commit_size = align_pow2(commit_size, os_get_system_info()->page_size);
}
// rjf: reserve/commit initial block
void *base = params->optional_backing_buffer;
if(base == 0)
{
if(params->flags & ArenaFlag_LargePages)
{
base = os_reserve_large(reserve_size);
os_commit_large(base, commit_size);
}
else
{
base = os_reserve(reserve_size);
os_commit(base, commit_size);
}
}
// rjf: panic on arena creation failure
#if OS_FEATURE_GRAPHICAL
if(Unlikely(base == 0))
{
os_graphical_message(1, str8_lit("Fatal Allocation Failure"), str8_lit("Unexpected memory allocation failure."));
os_abort(1);
}
#endif
// rjf: extract arena header & fill
Arena *arena = (Arena *)base;
arena->current = arena;
arena->flags = params->flags;
arena->cmt_size = (U32)params->commit_size;
arena->res_size = params->reserve_size;
arena->base_pos = 0;
arena->pos = ARENA_HEADER_SIZE;
arena->cmt = commit_size;
arena->res = reserve_size;
AsanPoisonMemoryRegion(base, commit_size);
AsanUnpoisonMemoryRegion(base, ARENA_HEADER_SIZE);
return arena;
}
// Note(Ed): INLINED
// internal void
// arena_release(Arena *arena)
// {
// for(Arena *n = arena->current, *prev = 0; n != 0; n = prev)
// {
// prev = n->prev;
// os_release(n, n->res);
// }
// }
//- rjf: arena push/pop core functions
internal void *