feat! breaking changes on kernel sources.

Signed-off-by: Amlal El Mahrouss <amlal@nekernel.org>

1 files changed, 72 insertions, 0 deletions

diff --git a/src/kernel/SwapKit/DiskSwap.h b/src/kernel/SwapKit/DiskSwap.h
new file mode 100644
index 00000000..cd81b13a
--- /dev/null
+++ b/src/kernel/SwapKit/DiskSwap.h
@@ -0,0 +1,72 @@
+
+/* ========================================
+
+  Copyright (C) 2024-2025 Amlal El Mahrouss , licensed under the Apache 2.0 license.
+
+======================================== */
+
+#pragma once
+
+#include <CompilerKit/CompilerKit.h>
+#include <NeKit/Defines.h>
+#include <hint/CompilerHint.h>
+
+#define kSwapBlockMaxSize (mib_cast(16))
+#define kSwapPageFilePath "/boot/pagefile.sys"
+
+/// @file SwapDisk.h
+/// @brief Virtual memory swap disk.
+
+namespace Kernel {
+struct SWAP_DISK_HEADER;
+class DiskSwapInterface;
+
+/// @brief Virtual memory interface to swap memory chunks onto disk.
+/// @note The class only supports the NeFS as of right now, as it is using forks to write data into
+/// disk.
+class DiskSwapInterface final {
+ public:
+  explicit DiskSwapInterface() = default;
+  ~DiskSwapInterface()         = default;
+
+  NE_COPY_DELETE(DiskSwapInterface)
+  NE_MOVE_DELETE(DiskSwapInterface)
+
+ public:
+  /***********************************************************************************/
+  /// @brief Write memory chunk onto disk.
+  /// @param name The swap name to recognize this memory region.
+  /// @param name_len length of fork name.
+  /// @param data the data packet.
+  /// @return Whether the swap was written to disk, or not.
+  /***********************************************************************************/
+  BOOL Write(const Char* name, SizeT name_len, SWAP_DISK_HEADER* data);
+
+  /***********************************************************************************/
+  /// @brief Read memory chunk from disk.
+  /// @param name The swap name to recognize this memory region.
+  /// @param name_len length of fork name.
+  /// @param data the data packet length.
+  /// @return Whether the swap was fetched to disk, or not.
+  /***********************************************************************************/
+  _Output SWAP_DISK_HEADER* Read(const Char* name, SizeT name_len, SizeT data_len);
+};
+
+/// @brief Swap disk header, containing information about the held virtual memory.
+/// @param fMagic Ident number.
+/// @param fHeaderSz This header size.
+/// @param fTeamID Process Team ID.
+/// @param fProcessID Process ID.
+/// @param fVirtualAddress Virtual address pointed by data.
+/// @param fBlobSz Blob's size.
+/// @param fBlob Data blob.
+typedef struct SWAP_DISK_HEADER {
+  UInt32 fMagic;
+  SizeT  fHeaderSz;
+  UInt64 fTeamID;
+  UInt64 fProcessID;
+  UInt64 fVirtualAddress;
+  SizeT  fBlobSz;
+  UInt8  fBlob[1];
+} PACKED ALIGN(8) SWAP_DISK_HEADER;
+}  // namespace Kernel