91 lines
1.9 KiB
C++
91 lines
1.9 KiB
C++
/*
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* Copyright 2002-2006, Haiku Inc. All rights reserved.
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* Distributed under the terms of the MIT License.
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*
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* Copyright 2002, Travis Geiselbrecht. All rights reserved.
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* Distributed under the terms of the NewOS License.
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*/
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#ifndef _KERNEL_CPU_H
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#define _KERNEL_CPU_H
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#include <setjmp.h>
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#include <smp.h>
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#include <timer.h>
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#include <arch/cpu.h>
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// define PAUSE, if not done in arch/cpu.h
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#ifndef PAUSE
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# define PAUSE()
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#endif
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struct kernel_args;
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namespace BKernel {
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struct Thread;
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}
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using BKernel::Thread;
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/* CPU local data structure */
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typedef struct cpu_ent {
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int cpu_num;
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// thread.c: used to force a reschedule at quantum expiration time
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int preempted;
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timer quantum_timer;
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// keeping track of CPU activity
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bigtime_t active_time;
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bigtime_t last_kernel_time;
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bigtime_t last_user_time;
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// used in the kernel debugger
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addr_t fault_handler;
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addr_t fault_handler_stack_pointer;
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jmp_buf fault_jump_buffer;
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Thread* running_thread;
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Thread* previous_thread;
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bool invoke_scheduler;
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bool invoke_scheduler_if_idle;
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bool disabled;
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// arch-specific stuff
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arch_cpu_info arch;
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} cpu_ent __attribute__((aligned(64)));
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//extern cpu_ent gCPU[MAX_BOOT_CPUS];
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extern cpu_ent gCPU[];
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#ifdef __cplusplus
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extern "C" {
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#endif
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status_t cpu_preboot_init_percpu(struct kernel_args *args, int curr_cpu);
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status_t cpu_init(struct kernel_args *args);
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status_t cpu_init_percpu(struct kernel_args *ka, int curr_cpu);
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status_t cpu_init_post_vm(struct kernel_args *args);
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status_t cpu_init_post_modules(struct kernel_args *args);
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bigtime_t cpu_get_active_time(int32 cpu);
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cpu_ent *get_cpu_struct(void);
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extern inline cpu_ent *get_cpu_struct(void) { return &gCPU[smp_get_current_cpu()]; }
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void _user_clear_caches(void *address, size_t length, uint32 flags);
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bool _user_cpu_enabled(int32 cpu);
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status_t _user_set_cpu_enabled(int32 cpu, bool enabled);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _KERNEL_CPU_H */
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