lttng: update flags for gc tracing

PR-URL: https://github.com/nodejs/node/pull/3388
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>

src/node_lttng_provider.h

@@ -7,6 +7,17 @@
 
 namespace node {
 
+#define FOR_ALL_GC_TYPES(APPLY) \
+  APPLY(kGCTypeScavenge) \
+  APPLY(kGCTypeMarkSweepCompact) \
+  APPLY(kGCTypeAll)
+
+#define FOR_ALL_GC_CALLBACK_FLAGS(APPLY) \
+  APPLY(kNoGCCallbackFlags) \
+  APPLY(kGCCallbackFlagConstructRetainedObjectInfos) \
+  APPLY(kGCCallbackFlagForced) \
+  APPLY(kGCCallbackFlagSynchronousPhantomCallbackProcessing)
+
 void NODE_HTTP_SERVER_REQUEST(node_lttng_http_server_request_t* req,
                               node_lttng_connection_t* conn,
                               const char *remote, int port,
@@ -48,42 +59,33 @@ void NODE_NET_STREAM_END(node_lttng_connection_t* conn,
 void NODE_GC_START(v8::GCType type,
                    v8::GCCallbackFlags flags,
                    v8::Isolate* isolate) {
-  const char* typeStr = "";
-  const char* flagsStr = "";
-  if (type == v8::GCType::kGCTypeScavenge) {
-    typeStr = "kGCTypeScavenge";
-  } else if (type == v8::GCType::kGCTypeMarkSweepCompact) {
-    typeStr = "kGCTypeMarkSweepCompact";
-  } else if (type == v8::GCType::kGCTypeAll) {
-    typeStr = "kGCTypeAll";
-  }
-  if (flags == v8::GCCallbackFlags::kNoGCCallbackFlags) {
-    flagsStr = "kNoGCCallbackFlags";
-  } else if (flags == v8::GCCallbackFlags::kGCCallbackFlagCompacted) {
-    flagsStr = "kGCCallbackFlagCompacted";
-  }
+  const char* typeStr = "Unkown GC Type";
+  const char* flagsStr = "Unknown GC Flag";
+
+#define BUILD_IF(f) if (type == v8::GCType::f) { typeStr = #f; }
+  FOR_ALL_GC_TYPES(BUILD_IF);
+#undef BUILD_IF
+
+#define BUILD_IF(f) if (flags == v8::GCCallbackFlags::f) { flagsStr = #f; }
+  FOR_ALL_GC_CALLBACK_FLAGS(BUILD_IF);
+#undef BUILD_IF
 
   tracepoint(node, gc_start, typeStr, flagsStr);
 }
 
-
 void NODE_GC_DONE(v8::GCType type,
                   v8::GCCallbackFlags flags,
                   v8::Isolate* isolate) {
-  const char* typeStr = "";
-  const char* flagsStr = "";
-  if (type == v8::GCType::kGCTypeScavenge) {
-    typeStr = "kGCTypeScavenge";
-  } else if (type == v8::GCType::kGCTypeMarkSweepCompact) {
-    typeStr = "kGCTypeMarkSweepCompact";
-  } else if (type == v8::GCType::kGCTypeAll) {
-    typeStr = "kGCTypeAll";
-  }
-  if (flags == v8::GCCallbackFlags::kNoGCCallbackFlags) {
-    flagsStr = "kNoGCCallbackFlags";
-  } else if (flags == v8::GCCallbackFlags::kGCCallbackFlagCompacted) {
-    flagsStr = "kGCCallbackFlagCompacted";
-  }
+  const char* typeStr = "Unkown GC Type";
+  const char* flagsStr = "Unknown GC Flag";
+
+#define BUILD_IF(f) if (type == v8::GCType::f) { typeStr = #f; }
+  FOR_ALL_GC_TYPES(BUILD_IF);
+#undef BUILD_IF
+
+#define BUILD_IF(f) if (flags == v8::GCCallbackFlags::f) { flagsStr = #f; }
+  FOR_ALL_GC_CALLBACK_FLAGS(BUILD_IF);
+#undef BUILD_IF
 
   tracepoint(node, gc_done, typeStr, flagsStr);
 }