141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
/*
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* QEMU CPU model
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*
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* Copyright (c) 2012 SUSE LINUX Products GmbH
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, see
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* <http://www.gnu.org/licenses/gpl-2.0.html>
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*/
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#ifndef QEMU_CPU_H
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#define QEMU_CPU_H
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#include "qemu/object.h"
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#include "qemu-thread.h"
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/**
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* SECTION:cpu
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* @section_id: QEMU-cpu
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* @title: CPU Class
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* @short_description: Base class for all CPUs
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*/
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#define TYPE_CPU "cpu"
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#define CPU(obj) OBJECT_CHECK(CPUState, (obj), TYPE_CPU)
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#define CPU_CLASS(class) OBJECT_CLASS_CHECK(CPUClass, (class), TYPE_CPU)
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#define CPU_GET_CLASS(obj) OBJECT_GET_CLASS(CPUClass, (obj), TYPE_CPU)
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typedef struct CPUState CPUState;
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/**
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* CPUClass:
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* @reset: Callback to reset the #CPUState to its initial state.
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*
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* Represents a CPU family or model.
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*/
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typedef struct CPUClass {
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/*< private >*/
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ObjectClass parent_class;
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/*< public >*/
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void (*reset)(CPUState *cpu);
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} CPUClass;
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/**
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* CPUState:
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* @created: Indicates whether the CPU thread has been successfully created.
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* @stop: Indicates a pending stop request.
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* @stopped: Indicates the CPU has been artificially stopped.
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*
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* State of one CPU core or thread.
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*/
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struct CPUState {
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/*< private >*/
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Object parent_obj;
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/*< public >*/
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struct QemuThread *thread;
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#ifdef _WIN32
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HANDLE hThread;
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#endif
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int thread_id;
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struct QemuCond *halt_cond;
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struct qemu_work_item *queued_work_first, *queued_work_last;
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bool thread_kicked;
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bool created;
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bool stop;
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bool stopped;
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/* TODO Move common fields from CPUArchState here. */
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};
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/**
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* cpu_reset:
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* @cpu: The CPU whose state is to be reset.
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*/
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void cpu_reset(CPUState *cpu);
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/**
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* qemu_cpu_has_work:
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* @cpu: The vCPU to check.
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*
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* Checks whether the CPU has work to do.
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*
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* Returns: %true if the CPU has work, %false otherwise.
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*/
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bool qemu_cpu_has_work(CPUState *cpu);
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/**
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* qemu_cpu_is_self:
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* @cpu: The vCPU to check against.
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*
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* Checks whether the caller is executing on the vCPU thread.
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*
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* Returns: %true if called from @cpu's thread, %false otherwise.
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*/
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bool qemu_cpu_is_self(CPUState *cpu);
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/**
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* qemu_cpu_kick:
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* @cpu: The vCPU to kick.
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*
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* Kicks @cpu's thread.
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*/
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void qemu_cpu_kick(CPUState *cpu);
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/**
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* cpu_is_stopped:
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* @cpu: The CPU to check.
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*
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* Checks whether the CPU is stopped.
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*
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* Returns: %true if run state is not running or if artificially stopped;
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* %false otherwise.
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*/
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bool cpu_is_stopped(CPUState *cpu);
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/**
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* run_on_cpu:
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* @cpu: The vCPU to run on.
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* @func: The function to be executed.
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* @data: Data to pass to the function.
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*
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* Schedules the function @func for execution on the vCPU @cpu.
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*/
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void run_on_cpu(CPUState *cpu, void (*func)(void *data), void *data);
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#endif
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