private void AddProviderRegistration(ILoggerProvider provider, bool dispose)
{
_providerRegistrations.Add(new ProviderRegistration
{
Provider = provider,
ShouldDispose = dispose
});
// 如果日志提供器 实现 ISupportExternalScope 接口
if (provider is ISupportExternalScope supportsExternalScope)
{
if (_scopeProvider == null)
{
_scopeProvider = new LoggerExternalScopeProvider();
}
//将同一个LoggerExternalScopeProvider实例 保存到 provider._loggers里面
supportsExternalScope.SetScopeProvider(_scopeProvider);
}
}
internal Scope(LoggerExternalScopeProvider provider, object state, Scope parent)
{
_provider = provider;
State = state;
Parent = parent;
}