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Kernel: Implement lazy FPU state restore.

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This commit is contained in:
Andreas Kling 2019-01-25 07:52:44 +01:00
parent 2279f5eaa6
commit dfdca9d2a7
8 changed files with 50 additions and 9 deletions
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6
Kernel/Process.h
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@ -268,6 +268,10 @@ public:
bool wakeup_requested() { return m_wakeup_requested; }
void request_wakeup() { m_wakeup_requested = true; }
FPUState& fpu_state() { return m_fpu_state; }
bool has_used_fpu() const { return m_has_used_fpu; }
void set_has_used_fpu(bool b) { m_has_used_fpu = b; }
private:
friend class MemoryManager;
friend class Scheduler;
@ -303,6 +307,7 @@ private:
dword m_wakeupTime { 0 };
TSS32 m_tss;
TSS32 m_tss_to_resume_kernel;
FPUState m_fpu_state;
struct FileDescriptorAndFlags {
operator bool() const { return !!descriptor; }
void clear() { descriptor = nullptr; flags = 0; }
@ -372,6 +377,7 @@ private:
int m_next_window_id { 1 };
dword m_wakeup_requested { false };
bool m_has_used_fpu { false };
};
extern Process* current;