1 files changed, 66 insertions, 0 deletions
diff --git a/tools/debugserver/source/MacOSX/OsLogger.cpp b/tools/debugserver/source/MacOSX/OsLogger.cpp
new file mode 100644
index 000000000000..efecea30212f
--- /dev/null
+++ b/tools/debugserver/source/MacOSX/OsLogger.cpp
@@ -0,0 +1,66 @@
+//===-- OsLogger.cpp --------------------------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "OsLogger.h"
+
+#if LLDB_USE_OS_LOG
+
+#include <os/log.h>
+
+#include "DNBDefs.h"
+#include "DNBLog.h"
+
+#define LLDB_OS_LOG_MAX_BUFFER_LENGTH 256
+
+namespace {
+//----------------------------------------------------------------------
+// Darwin os_log logging callback that can be registered with
+// DNBLogSetLogCallback
+//----------------------------------------------------------------------
+void DarwinLogCallback(void *baton, uint32_t flags, const char *format,
+                       va_list args) {
+  if (format == nullptr)
+    return;
+
+  static os_log_t g_logger;
+  if (!g_logger) {
+    g_logger = os_log_create("com.apple.dt.lldb", "debugserver");
+    if (!g_logger)
+      return;
+  }
+
+  os_log_type_t log_type;
+  if (flags & DNBLOG_FLAG_FATAL)
+    log_type = OS_LOG_TYPE_FAULT;
+  else if (flags & DNBLOG_FLAG_ERROR)
+    log_type = OS_LOG_TYPE_ERROR;
+  else if (flags & DNBLOG_FLAG_WARNING)
+    log_type = OS_LOG_TYPE_DEFAULT;
+  else if (flags & DNBLOG_FLAG_VERBOSE)
+    log_type = OS_LOG_TYPE_DEBUG;
+  else
+    log_type = OS_LOG_TYPE_DEFAULT;
+
+  // This code is unfortunate.  os_log* only takes static strings, but
+  // our current log API isn't set up to make use of that style.
+  char buffer[LLDB_OS_LOG_MAX_BUFFER_LENGTH];
+  vsnprintf(buffer, sizeof(buffer), format, args);
+  os_log_with_type(g_logger, log_type, "%{public}s", buffer);
+}
+}
+
+DNBCallbackLog OsLogger::GetLogFunction() {
+  return _os_log_impl ? DarwinLogCallback : nullptr;
+}
+
+#else
+
+DNBCallbackLog OsLogger::GetLogFunction() { return nullptr; }
+
+#endif