8316885: jcmd: Compiler.CodeHeap_Analytics cmd does not inform about missing aggregate

Backport-of: 1230aed61d286fe9c09f46e2bab626d0e8fe0273

Author: GoeLin

src/hotspot/share/code/codeHeapState.cpp

@@ -1216,13 +1216,15 @@ void CodeHeapState::aggregate(outputStream* out, CodeHeap* heap, size_t granular
 
 void CodeHeapState::print_usedSpace(outputStream* out, CodeHeap* heap) {
   if (!initialization_complete) {
+    print_aggregate_missing(out, nullptr);
     return;
   }
 
   const char* heapName   = get_heapName(heap);
   get_HeapStatGlobals(out, heapName);
 
   if ((StatArray == nullptr) || (TopSizeArray == nullptr) || (used_topSizeBlocks == 0)) {
+    print_aggregate_missing(out, heapName);
     return;
   }
   BUFFEREDSTREAM_DECL(ast, out)
@@ -1426,13 +1428,15 @@ void CodeHeapState::print_usedSpace(outputStream* out, CodeHeap* heap) {
 
 void CodeHeapState::print_freeSpace(outputStream* out, CodeHeap* heap) {
   if (!initialization_complete) {
+    print_aggregate_missing(out, nullptr);
     return;
   }
 
   const char* heapName   = get_heapName(heap);
   get_HeapStatGlobals(out, heapName);
 
   if ((StatArray == nullptr) || (FreeArray == nullptr) || (alloc_granules == 0)) {
+    print_aggregate_missing(out, heapName);
     return;
   }
   BUFFEREDSTREAM_DECL(ast, out)
@@ -1600,13 +1604,15 @@ void CodeHeapState::print_freeSpace(outputStream* out, CodeHeap* heap) {
 
 void CodeHeapState::print_count(outputStream* out, CodeHeap* heap) {
   if (!initialization_complete) {
+    print_aggregate_missing(out, nullptr);
     return;
   }
 
   const char* heapName   = get_heapName(heap);
   get_HeapStatGlobals(out, heapName);
 
   if ((StatArray == nullptr) || (alloc_granules == 0)) {
+    print_aggregate_missing(out, heapName);
     return;
   }
   BUFFEREDSTREAM_DECL(ast, out)
@@ -1758,13 +1764,15 @@ void CodeHeapState::print_count(outputStream* out, CodeHeap* heap) {
 
 void CodeHeapState::print_space(outputStream* out, CodeHeap* heap) {
   if (!initialization_complete) {
+    print_aggregate_missing(out, nullptr);
     return;
   }
 
   const char* heapName   = get_heapName(heap);
   get_HeapStatGlobals(out, heapName);
 
   if ((StatArray == nullptr) || (alloc_granules == 0)) {
+    print_aggregate_missing(out, heapName);
     return;
   }
   BUFFEREDSTREAM_DECL(ast, out)
@@ -1927,13 +1935,15 @@ void CodeHeapState::print_space(outputStream* out, CodeHeap* heap) {
 
 void CodeHeapState::print_age(outputStream* out, CodeHeap* heap) {
   if (!initialization_complete) {
+    print_aggregate_missing(out, nullptr);
     return;
   }
 
   const char* heapName   = get_heapName(heap);
   get_HeapStatGlobals(out, heapName);
 
   if ((StatArray == nullptr) || (alloc_granules == 0)) {
+    print_aggregate_missing(out, heapName);
     return;
   }
   BUFFEREDSTREAM_DECL(ast, out)
@@ -2039,13 +2049,15 @@ void CodeHeapState::print_age(outputStream* out, CodeHeap* heap) {
 
 void CodeHeapState::print_names(outputStream* out, CodeHeap* heap) {
   if (!initialization_complete) {
+    print_aggregate_missing(out, nullptr);
     return;
   }
 
   const char* heapName   = get_heapName(heap);
   get_HeapStatGlobals(out, heapName);
 
   if ((StatArray == nullptr) || (alloc_granules == 0)) {
+    print_aggregate_missing(out, heapName);
     return;
   }
   BUFFEREDSTREAM_DECL(ast, out)
@@ -2343,6 +2355,14 @@ void CodeHeapState::print_line_delim(outputStream* out, bufferedStream* ast, cha
   }
 }
 
+void CodeHeapState::print_aggregate_missing(outputStream* out, const char* heapName) {
+  if (heapName == nullptr) {
+    out->print_cr("No aggregated code heap data available. Run function aggregate first.");
+  } else {
+    out->print_cr("No aggregated data available for heap %s. Run function aggregate first.", heapName);
+  }
+}
+
 // Find out which blob type we have at hand.
 // Return "noType" if anything abnormal is detected.
 CodeHeapState::blobType CodeHeapState::get_cbType(CodeBlob* cb) {

src/hotspot/share/code/codeHeapState.hpp

@@ -91,6 +91,7 @@ class CodeHeapState : public CHeapObj<mtCode> {
   static void print_age_single(outputStream *ast, int age);
   static void print_line_delim(outputStream* out, bufferedStream *sst, char* low_bound, unsigned int ix, unsigned int gpl);
   static void print_line_delim(outputStream* out, outputStream *sst, char* low_bound, unsigned int ix, unsigned int gpl);
+  static void print_aggregate_missing(outputStream* out, const char* heapName);
   static blobType get_cbType(CodeBlob* cb);
   static bool blob_access_is_safe(CodeBlob* this_blob);
   static bool nmethod_access_is_safe(nmethod* nm);