request pages

2026-01-28 18:26:24 +11:00
parent 5b508f4a48
commit 012489a658
9 changed files with 19 additions and 1 deletions
--- a/kernel/src/PageFrameAllocator.cpp
+++ b/kernel/src/PageFrameAllocator.cpp
@@ -115,6 +115,16 @@ void PageFrameAllocator::ReservePages(void* address, uint64_t pageCount) {
 	}
 }

+void* PageFrameAllocator::RequestPage() {
+	for (uint64_t index = 0; index < PageBitmap.Size * 8; index++) {
+		if (PageBitmap[index] == true) continue;
+
+		LockPage((void*)(index * 4096));
+		return (void*)(index * 4096);
+	}
+
+	return NULL; // page frame swap to file
+}

 uint64_t PageFrameAllocator::GetFreeRAM() {
 	return freeMemory;