ProfilerFlowEventType.Begin

描述

用于流程起点。

Begin 流事件类型将分析器样本标记为流程起点。Begin 事件将生成新的流程标识符。使用它来跟踪属于同一流程的所有分析器样本。 Next 表示流程的下一个点，End 表示流程的终止。流程标识符从 1 开始，对于每个新的 Begin 增加 1。

流程起点的示例是作业调度。例如，IJobExtensions.Schedule 生成一个隐式 Begin 分析器流程事件，而 IJob.Execute 生成一个隐式 Next 事件。

using System;
using System.Threading;
using Unity.Profiling;
using Unity.Profiling.LowLevel;
using Unity.Profiling.LowLevel.Unsafe;

public class Example
{
    static readonly ProfilerMarker k_ScheduleTasksMarker = new ProfilerMarker("Schedule Task");
    static readonly ProfilerMarker k_TaskMarker = new ProfilerMarker("Task");

    static void EmitFlowEventAndChainThread(uint flowId)
    {
        // Mark the next k_TaskMarker as a beginning of the flow
        ProfilerUnsafeUtility.FlowEvent(flowId, ProfilerFlowEventType.Next);
        using (k_TaskMarker.Auto())
        {
            // Do work
        }
    }

    static void ScheduleTask()
    {
        using (k_ScheduleTasksMarker.Auto())
        {
            var flowId = ProfilerUnsafeUtility.CreateFlow(ProfilerUnsafeUtility.CategoryScripts);
            // Mark the parent k_ScheduleTasksMarker as a beginning of the flow
            ProfilerUnsafeUtility.FlowEvent(flowId, ProfilerFlowEventType.Begin);
            var thread = new Thread(() => EmitFlowEventAndChainThread(flowId));
            thread.Start();
        }
    }
}

其他资源: ProfilerUnsafeUtility.FlowEvent.