private ProfilerEngine(IProductConfiguration config)
{
Validate.NotNull(config, nameof(config));
_versionInfo = ProfilerEngineVersionInfo.CreateNewInstance();
_profiledThreadInfoProvider = new ProfiledThreadInfoProvider();
_profiledAppDomainProvider = new ProfiledAppDomainProvider();
_enqueueStackSnapshotBufferSegmentForExport = NativeCallback_EnqueueStackSnapshotBufferSegmentForExport;
_tryShutdownCurrentManagedProfilerEngine = NativeCallback_TryShutdownCurrentManagedProfilerEngine;
_completedStackSnapshots = new StackSnapshotsBufferSegmentCollection();
_pprofBuilder = new PProfBuilder();
RegisterReversePInvokeCallbacks();
_resolveAndExportStacksBackgroundLoop = new ResolveAndExportStacksBackgroundLoop(this, config);
_resolveAndExportStacksBackgroundLoop.Start();
}
private void RegisterReversePInvokeCallbacks()
{
const string ErrorMessage = "While initializing, the Managed Profiler Engine overwrote an existing reverse PInvoke callback."
+ " This may indicate a serious problem with code or configuration."
+ " Perhaps, there are more than a single process-wide instance of " + nameof(ProfilerEngine) + "?"
+ " This could happen, for instance, if the Engine is being loaded into more than a single AppDomain."
+ " If so, it is not a supported scenario.";
{
NativeInterop.ManagedCallbackRegistry.EnqueueStackSnapshotBufferSegmentForExport.Delegate_t prevExistingCallback =
NativeInterop.ManagedCallbackRegistry.EnqueueStackSnapshotBufferSegmentForExport.Set(_enqueueStackSnapshotBufferSegmentForExport);
if (prevExistingCallback != null)
{
AppDomain currentAppDomain = AppDomain.CurrentDomain;
#pragma warning disable SA1117 // easier to have the mapping key/value on the same line
Log.Error(
Log.WithCallInfo(LogSourceMoniker),
ErrorMessage,
"Callback moniker", nameof(NativeInterop.ManagedCallbackRegistry.EnqueueStackSnapshotBufferSegmentForExport),
$"{nameof(currentAppDomain)}.{nameof(AppDomain.Id)}", currentAppDomain?.Id,
$"{nameof(currentAppDomain)}.{nameof(AppDomain.FriendlyName)}", currentAppDomain?.FriendlyName,
$"{nameof(currentAppDomain)}.{nameof(AppDomain.IsDefaultAppDomain)}", currentAppDomain?.IsDefaultAppDomain());
}
}
{
NativeInterop.ManagedCallbackRegistry.TryShutdownCurrentManagedProfilerEngine.Delegate_t prevExistingCallback =
NativeInterop.ManagedCallbackRegistry.TryShutdownCurrentManagedProfilerEngine.Set(_tryShutdownCurrentManagedProfilerEngine);
if (prevExistingCallback != null)
{
AppDomain currentAppDomain = AppDomain.CurrentDomain;
Log.Error(
Log.WithCallInfo(LogSourceMoniker),
ErrorMessage,
"Callback moniker", nameof(NativeInterop.ManagedCallbackRegistry.TryShutdownCurrentManagedProfilerEngine),
$"{nameof(currentAppDomain)}.{nameof(AppDomain.Id)}", currentAppDomain?.Id,
$"{nameof(currentAppDomain)}.{nameof(AppDomain.FriendlyName)}", currentAppDomain?.FriendlyName,
$"{nameof(currentAppDomain)}.{nameof(AppDomain.IsDefaultAppDomain)}", currentAppDomain?.IsDefaultAppDomain());
}
#pragma warning restore SA1117 // Parameters should be on same line or separate lines
}
}
