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volatile int nrdy;
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volatile int nrdy;
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void before_thread_runs(void)
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void before_thread_runs(void)
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{
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{
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    before_thread_runs_arch();
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    before_thread_runs_arch();
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    fpu_context_restore();
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    fpu_context_restore(&(THREAD->saved_fpu_context));
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}
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}
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void scheduler_init(void)
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void scheduler_init(void)
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{
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{
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    if (haltstate)
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    if (haltstate)
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        halt();
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        halt();
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    if (THREAD) {
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    if (THREAD) {
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        spinlock_lock(&THREAD->lock);
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        spinlock_lock(&THREAD->lock);
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        fpu_context_save(&(THREAD->saved_fpu_context));
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        if (!context_save(&THREAD->saved_context)) {
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        if (!context_save(&THREAD->saved_context)) {
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            /*
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            /*
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             * This is the place where threads leave scheduler();
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             * This is the place where threads leave scheduler();
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             */
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             */
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            before_thread_runs();
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            before_thread_runs();