Method TaskControlBlock

src/task/task_control_block.cpp:131–165

}

TaskControlBlock::TaskControlBlock(const char* _name, int priority,
                                   ThreadEntry entry, void* arg)
    : name(_name) {
  // 分配辅助数据
  aux = new TaskAuxData{};
  if (!aux) {
    klog::Err("Failed to allocate TaskAuxData for task {}", name);
    return;
  }

  // 设置优先级
  sched_info.priority = priority;
  sched_info.base_priority = priority;

  // 分配内核栈
  kernel_stack = static_cast<uint8_t*>(aligned_alloc(
      cpu_io::virtual_memory::kPageSize, kDefaultKernelStackSize));
  if (!kernel_stack) {
    klog::Err("Failed to allocate kernel stack for task {}", name);
    return;
  }

  // 设置 trap_context_ptr 指向内核栈顶预留的位置
  trap_context_ptr = reinterpret_cast<cpu_io::TrapContext*>(
      kernel_stack + kDefaultKernelStackSize - sizeof(cpu_io::TrapContext));

  // 设置内核栈顶
  auto stack_top =
      reinterpret_cast<uint64_t>(kernel_stack) + kDefaultKernelStackSize;

  // 初始化任务上下文
  InitTaskContext(&task_context, entry, arg, stack_top);

  fsm.Start();
}

TaskControlBlock::TaskControlBlock(const char* _name, int priority,
                                   uint8_t* elf, int argc, char** argv)