feat&fix: Kernel improvements and fixes, introduced `special` trees.

fix: Protective measures against affinity `zero` processes.
wip: WIP introduce `CFDictionary` object inside CF.
fix: public tooling fixes.

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

2 files changed, 46 insertions, 2 deletions

diff --git a/dev/kernel/KernelKit/CoreProcessScheduler.h b/dev/kernel/KernelKit/CoreProcessScheduler.h
index 56c2bce0..9ed2dada 100644
--- a/dev/kernel/KernelKit/CoreProcessScheduler.h
+++ b/dev/kernel/KernelKit/CoreProcessScheduler.h
@@ -104,6 +104,40 @@ struct PROCESS_FILE_TREE {
   };
 };
 
+using ProcessCtx = UInt32;
+
+template <typename T>
+struct PROCESS_SPECIAL_TREE {
+  static constexpr auto kHeap    = false;
+  static constexpr auto kFile    = false;
+  static constexpr auto kSpecial = true;
+
+  T     Entry{nullptr};
+  SizeT EntrySize{0UL};
+  SizeT EntryPad{0UL};
+
+  /// @brief a context is where the resource comes from.
+  ProcessCtx EntryContext{0UL};  // could be a socket, printer, device...
+
+  UInt32 Color{kBlackTreeKind};
+
+  struct PROCESS_SPECIAL_TREE<T>* Parent {
+    nullptr
+  };
+
+  struct PROCESS_SPECIAL_TREE<T>* Child {
+    nullptr
+  };
+
+  struct PROCESS_SPECIAL_TREE<T>* Prev {
+    nullptr
+  };
+
+  struct PROCESS_SPECIAL_TREE<T>* Next {
+    nullptr
+  };
+};
+
 /***********************************************************************************/
 /// @brief Subsystem enum type.
 /***********************************************************************************/
@@ -113,8 +147,8 @@ enum class ProcessSubsystem : Int32 {
   kProcessSubsystemUser,
   kProcessSubsystemService,
   kProcessSubsystemDriver,
+  kProcessSubsystemCount   = kProcessSubsystemDriver - kProcessSubsystemSecurity + 1,
   kProcessSubsystemInvalid = 0xFFFFFFF,
-  kProcessSubsystemCount   = 4,
 };
 
 /***********************************************************************************/
@@ -127,13 +161,14 @@ enum class ProcessStatusKind : Int32 {
   kKilled,
   kFrozen,
   kFinished,
-  kCount = 6,
+  kCount = kFinished - kStarting + 1,
 };
 
 /***********************************************************************************/
 //! @brief Affinity is the amount of nano-seconds this process is going to run.
 /***********************************************************************************/
 enum class AffinityKind : Int32 {
+  kInvalid      = 0,
   kRealTime     = 100,
   kVeryHigh     = 150,
   kHigh         = 200,
diff --git a/dev/kernel/KernelKit/ZXD.h b/dev/kernel/KernelKit/ZXD.h
index f1c99a21..966c54c7 100644
--- a/dev/kernel/KernelKit/ZXD.h
+++ b/dev/kernel/KernelKit/ZXD.h
@@ -15,6 +15,12 @@ namespace Kernel {
 struct ZXD_EXEC_HEADER;
 struct ZXD_STUB_HEADER;
 
+enum ZXD_FLAGS {
+  kZXDFlagsInvalid,
+  kZXDFlagsDriver,
+  kZXDFlagsCount,
+};
+
 /// @brief ZXD executable header
 /// @details This header is used to identify ZXD executable files.
 struct PACKED ZXD_EXEC_HEADER {
@@ -41,4 +47,7 @@ struct PACKED ZXD_STUB_HEADER {
   UInt32 fStubOffset;
   UInt32 fStubCRC32;
 };
+
+using ZXD_EXEC_HEADER_PTR = ZXD_EXEC_HEADER*;
+using ZXD_STUB_HEADER_PTR = ZXD_STUB_HEADER*;
 }  // namespace Kernel