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Kernel: Turn Thread::current and Process::current into functions

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This allows us to query the current thread and process on a
per processor basis
This commit is contained in:
Tom 2020-06-28 15:34:31 -06:00 • committed by Andreas Kling
parent cdc78515b6
commit 16783bd14d
39 changed files with 518 additions and 369 deletions
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29
Kernel/Arch/i386/CPU.h
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@ -626,6 +626,8 @@ class Processor {
static FPUState s_clean_fpu_state;
ProcessorInfo* m_info;
Thread* m_current_thread;
Thread* m_idle_thread;
bool m_invoke_scheduler_async;
@ -661,6 +663,33 @@ public:
return *(Processor*)read_fs_u32(0);
}
ALWAYS_INLINE static bool is_initialized()
{
return get_fs() == GDT_SELECTOR_PROC && read_fs_u32(0) != 0;
}
ALWAYS_INLINE Thread* idle_thread() const
{
return m_idle_thread;
}
ALWAYS_INLINE void set_idle_thread(Thread& idle_thread)
{
m_idle_thread = &idle_thread;
}
ALWAYS_INLINE Thread* current_thread() const
{
// NOTE: NOT safe to call from another processor!
ASSERT(&Processor::current() == this);
return m_current_thread;
}
ALWAYS_INLINE void set_current_thread(Thread& current_thread)
{
m_current_thread = &current_thread;
}
ALWAYS_INLINE u32 id()
{
return m_cpu;