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robustify ctrl memory streaming cache & texture cache layer to unreasonably large sizes/dimensions

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This commit is contained in:
Ryan Fleury
2024-02-05 09:24:00 -08:00
parent 95eea70682
commit f03f3e4421
4 changed files with 56 additions and 38 deletions
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src/base/base_arena.c
+16 -17
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@@ -10,44 +10,44 @@ arena_alloc__sized(U64 init_res, U64 init_cmt)
ProfBeginFunction();
Assert(ARENA_HEADER_SIZE < init_cmt && init_cmt <= init_res);
void *memory;
U64 res;
U64 cmt;
void *memory = 0;
U64 res = 0;
U64 cmt = 0;
B32 large_pages = os_large_pages_enabled();
if (large_pages) {
if(large_pages)
{
U64 page_size = os_large_page_size();
res = AlignPow2(init_res, page_size);
#if OS_WINDOWS
cmt = res;
#else
cmt = AlignPow2(init_cmt, page_size);
#endif
memory = os_reserve_large(res);
if (!os_commit_large(memory, cmt)) {
if(!os_commit_large(memory, cmt))
{
memory = 0;
os_release(memory, res);
}
} else {
}
else
{
U64 page_size = os_page_size();
res = AlignPow2(init_res, page_size);
cmt = AlignPow2(init_cmt, page_size);
memory = os_reserve(res);
if (!os_commit(memory, cmt)) {
if(!os_commit(memory, cmt))
{
memory = 0;
os_release(memory, res);
}
}
Assert(memory);
AsanPoisonMemoryRegion(memory, cmt);
AsanUnpoisonMemoryRegion(memory, ARENA_HEADER_SIZE);
Arena *arena = (Arena*)memory;
if (arena) {
if(arena)
{
AsanPoisonMemoryRegion(memory, cmt);
AsanUnpoisonMemoryRegion(memory, ARENA_HEADER_SIZE);
arena->prev = 0;
arena->current = arena;
arena->base_pos = 0;
@@ -148,7 +148,6 @@ arena_push__impl(Arena *arena, U64 size)
cmt_new_size = cmt_new_clamped - current->cmt;
is_cmt_ok = os_commit((U8*)current + current->cmt, cmt_new_size);
}
Assert(is_cmt_ok);
if (is_cmt_ok) {
current->cmt = cmt_new_clamped;