[lldb] Add new Swift log channel

Author: kastiglione

lldb/include/lldb/Utility/Logging.h

@@ -50,6 +50,8 @@
    LIBLLDB_LOG_STATE | LIBLLDB_LOG_SYMBOLS | LIBLLDB_LOG_TARGET |              \
    LIBLLDB_LOG_COMMANDS)
 
+#define LIBLLDB_SWIFT_LOG_HEALTH (1u << 1)
+
 namespace lldb_private {
 
 class Log;
@@ -58,6 +60,8 @@ Log *GetLogIfAllCategoriesSet(uint32_t mask);
 
 Log *GetLogIfAnyCategoriesSet(uint32_t mask);
 
+Log *GetSwiftHealthLog();
+
 void InitializeLldbChannel();
 
 } // namespace lldb_private

lldb/source/Utility/Logging.cpp

@@ -49,10 +49,16 @@ static constexpr Log::Category g_categories[] = {
   {{"watch"}, {"log watchpoint related activities"}, LIBLLDB_LOG_WATCHPOINTS},
 };
 
+static constexpr Log::Category g_swift_categories[] = {
+  {{"health"}, {"log all messages related to lldb Swift operational health"}, LIBLLDB_SWIFT_LOG_HEALTH},
+};
+
 static Log::Channel g_log_channel(g_categories, LIBLLDB_LOG_DEFAULT);
+static Log::Channel g_swift_log_channel(g_swift_categories, LIBLLDB_SWIFT_LOG_HEALTH);
 
 void lldb_private::InitializeLldbChannel() {
   Log::Register("lldb", g_log_channel);
+  Log::Register("swift", g_swift_log_channel);
 }
 
 Log *lldb_private::GetLogIfAllCategoriesSet(uint32_t mask) {
@@ -62,3 +68,7 @@ Log *lldb_private::GetLogIfAllCategoriesSet(uint32_t mask) {
 Log *lldb_private::GetLogIfAnyCategoriesSet(uint32_t mask) {
   return g_log_channel.GetLogIfAny(mask);
 }
+
+Log *lldb_private::GetSwiftHealthLog() {
+  return g_swift_log_channel.GetLogIfAny(LIBLLDB_SWIFT_LOG_HEALTH);
+}