【llbc】Service完整简化、梳理

[lailongwei]

完整简化、梳理Service，集中于以下几个方面：

• 去除错误使用volatile的地方
• Start/Stop流程梳理、标准化
• Comp各流程管理简化
• Service内置功能管理简化
• Service提供给Comp一个Start/Stop事件
• Service整体代码简化

[lailongwei]

Service运行流程：

class LLBC_ServiceRunningPhase
{
public:
    enum ENUM
    {
        Begin = 0,

        // Service has not been started.
        NotStarted = Begin,

        // Service pre-starting(Perform some preparatory work before initializing components).
        PreStarting,
        // Specific service pre-start failed.
        PreStartFailed,
        // Service has been pre-started.
        PreStarted,

        // Service is currently initializing components.
        InitingComps,
        // Specific service initialize components failed.
        InitCompsFailed,
        // Service has been initialized all components.
        CompsInited,

        // Service is currently starting components.
        StartingComps,
        // Specific service start components failed.
        StartCompsFailed,
        // Service has been started all components.
        CompsStarted,

        // Service has been started.
        Started,

        // Service is currently stopping components.
        StoppingComps,

        // Service is currently stopping.
        Stopping,

        End,
    };
};

[lailongwei]

已完整完整，Service流程标准化的同时，整体代码也得到的简化