Method initialize

lab8/src/5/src/kernel/program.cpp:21–45

}

void ProgramManager::initialize()
{
    allPrograms.initialize();
    readyPrograms.initialize();
    running = nullptr;

    for (int i = 0; i < MAX_PROGRAM_AMOUNT; ++i)
    {
        PCB_SET_STATUS[i] = false;
    }

    // 初始化用户代码段、数据段和栈段
    int selector;

    selector = asm_add_global_descriptor(USER_CODE_LOW, USER_CODE_HIGH);
    USER_CODE_SELECTOR = (selector << 3) | 0x3;

    selector = asm_add_global_descriptor(USER_DATA_LOW, USER_DATA_HIGH);
    USER_DATA_SELECTOR = (selector << 3) | 0x3;

    selector = asm_add_global_descriptor(USER_STACK_LOW, USER_STACK_HIGH);
    USER_STACK_SELECTOR = (selector << 3) | 0x3;

    initializeTSS();
}

int ProgramManager::executeThread(ThreadFunction function, void *parameter, const char *name, int priority)
{