feat: scheduler: process scheduler improvements and wip subsystem.

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

3 files changed, 21 insertions, 8 deletions

diff --git a/dev/kernel/src/IPEFDylibObject.cc b/dev/kernel/src/IPEFDylibObject.cc
index a24fba72..91f8c88a 100644
--- a/dev/kernel/src/IPEFDylibObject.cc
+++ b/dev/kernel/src/IPEFDylibObject.cc
@@ -90,6 +90,10 @@ EXTERN_C IDylibRef rtl_init_dylib_pef(USER_PROCESS& process) {
 EXTERN_C Void rtl_fini_dylib_pef(USER_PROCESS& process, IDylibRef dll_obj, BOOL* successful) {
   MUST_PASS(successful);
 
+  if (!successful) {
+    return;
+  }
+
   // sanity check (will also trigger a bug check if this fails)
   if (dll_obj == nullptr) {
     *successful = false;
diff --git a/dev/kernel/src/KernelTaskScheduler.cc b/dev/kernel/src/KernelTaskScheduler.cc
index 1997c175..8bbe5601 100644
--- a/dev/kernel/src/KernelTaskScheduler.cc
+++ b/dev/kernel/src/KernelTaskScheduler.cc
@@ -15,4 +15,17 @@
 /// @author Amlal El Mahrouss (amlal@nekernel.org)
 /***********************************************************************************/
 
-namespace Kernel {}  // namespace Kernel
\ No newline at end of file
+namespace Kernel {
+EXTERN_C Void hal_switch_kernel_task(HAL::StackFramePtr frame, ProcessID kid);
+
+Bool KernelTaskHelper::Switch(HAL::StackFramePtr frame_ptr, ProcessID new_kid) {
+  NE_UNUSED(frame_ptr);
+  NE_UNUSED(new_kid);
+
+  return NO;
+}
+
+Bool KernelTaskHelper::CanBeScheduled(const KERNEL_TASK& task) {
+  return task.Kid > 0 && task.Image.HasCode();
+}
+}  // namespace Kernel
\ No newline at end of file
diff --git a/dev/kernel/src/UserProcessScheduler.cc b/dev/kernel/src/UserProcessScheduler.cc
index 2306d3e4..ac25c3d8 100644
--- a/dev/kernel/src/UserProcessScheduler.cc
+++ b/dev/kernel/src/UserProcessScheduler.cc
@@ -581,17 +581,13 @@ ErrorOr<ProcessID> UserProcessHelper::TheCurrentPID() {
 /// @retval true can be schedulded.
 /// @retval false cannot be schedulded.
 Bool UserProcessHelper::CanBeScheduled(const USER_PROCESS& process) {
+  if (process.Affinity == AffinityKind::kRealTime) return Yes;
+
   if (process.Status != ProcessStatusKind::kRunning) return No;
   if (process.Affinity == AffinityKind::kInvalid) return No;
   if (process.StackSize > kSchedMaxStackSz) return No;
   if (!process.Name[0]) return No;
-
-  // real time processes shouldn't wait that much.
-  if (process.Affinity == AffinityKind::kRealTime) return Yes;
-
-  if (process.Signal.SignalID == sig_generate_unique<SIGTRAP>()) {
-    return No;
-  }
+  if (process.Signal.SignalID == sig_generate_unique<SIGTRAP>()) return No;
 
   return process.PTime < 1;
 }