try reporting the crash from a crash handler

Author: oontvoo

lldb/source/API/SBDebugger.cpp

@@ -43,6 +43,7 @@
 #include "lldb/DataFormatters/DataVisualization.h"
 #include "lldb/Host/Config.h"
 #include "lldb/Host/StreamFile.h"
+#include "lldb/Core/Telemetry.h"
 #include "lldb/Host/XML.h"
 #include "lldb/Initialization/SystemLifetimeManager.h"
 #include "lldb/Interpreter/CommandInterpreter.h"
@@ -226,13 +227,45 @@ lldb::SBError SBDebugger::InitializeWithErrorHandling() {
   return error;
 }
 
+#if LLVM_ENABLE_TELEMETRY
+#if ENABLE_BACKTRACES
+static void TelemetryHandler(void *) {
+  // TODO: get the bt into the msg?
+  // Also need to pre-alloc the memory for this entry?
+  lldb_private::telemetry::DebuggerInfo entry;
+  entry.exit_desc = {-1, ""};
+  if (auto* instance = lldb_private::telemetry::TelemeryManager::getInstance()) {
+    if (instance->GetConfig()->EnableTelemetry()) {
+      instance->AtDebuggerExit(&entry);
+    }
+  }
+}
+
+static bool RegisterTelemetryHander() {
+  sys::AddSignalHandler(TelemetryHandler, nullptr);
+  return false;
+}
+#endif
+#endif
+
+static void InstallCrashTelemetryReporter() {
+#if LLVM_ENABLE_TELEMETRY
+
+#if ENABLE_BACKTRACES
+  static bool HandlerRegistered = RegisterTelemeryHandler();
+  (void)HandlerRegistered;
+#endif
+#endif
+}
+
 void SBDebugger::PrintStackTraceOnError() {
   LLDB_INSTRUMENT();
 
   llvm::EnablePrettyStackTrace();
   static std::string executable =
       llvm::sys::fs::getMainExecutable(nullptr, nullptr);
   llvm::sys::PrintStackTraceOnErrorSignal(executable);
+  InstallCrashTelemetryReporter();
 }
 
 static void DumpDiagnostics(void *cookie) {