/**
* 开始一个profiler任务
*
* @param name 任务名称
* @param threshold 超过此数值的将被记录
* @return
*/
public static TimeProfiler start(String name, int threshold) {
// if (local.get() != null) {
// throw new IllegalStateException(
// "Can't start TimeProfiler: it's already running");
// }
TimeProfiler profiler = new TimeProfiler(name, threshold);
local.set(profiler);
profiler.begin = System.currentTimeMillis();
return profiler;
}
/**
* 增加一个跟踪信息，比如一个sql 注意：目前，顶级任务无法trace
*
* @param string
*/
public static void addTrace(String string) {
if (string == null) {
return;
}
TimeProfiler profiler = local.get();
if (profiler == null) {
return;
}
profiler.taskJoin(profiler.new TraceTask(string));
}
/**
* 开始一个子任务，如果没有启动profile，则此方法将启动profile运行
*
* @param string 子任务名称
*/
public static void beginTask(String string) {
TimeProfiler profiler = local.get();
boolean iFireIt = false;
if (profiler == null) {
profiler = start(string);
iFireIt = true;
}
ProfilerTask task = profiler.new ProfilerTask(string);
task.fire = iFireIt;
profiler.addTask(task);
task.start();
}
/** 结束当前子任务 */
public static void endTask() {
TimeProfiler profiler = local.get();
if (profiler == null) {
throw new IllegalStateException("Can't end ProfilerTask: TimeProfiler is not running");
}
if (profiler.currentTask == null) {
throw new IllegalStateException("Can't end ProfilerTask: currentTask is null");
}
ProfilerTask current = profiler.currentTask;
current.end();
boolean iFireIt = current.fire;
profiler.currentTask = profiler.currentTask.getParentTask();
if (iFireIt) {
profiler.release();
}
}