src/hotspot/share/compiler/compileBroker.hpp

rev 49289 : 8198756: Lazy allocation of compiler threads
Reviewed-by:

@@ -159,10 +159,16 @@
   static volatile jint _should_compile_new_jobs;
 
   // The installed compiler(s)
   static AbstractCompiler* _compilers[2];
 
+  // The maximum numbers of compiler threads to be determined during startup.
+  static int c1_count, c2_count;
+
+  // An array of compiler thread Java objects
+  static jobject *_compiler1_objects, *_compiler2_objects;
+
   // These counters are used for assigning id's to each compilation
   static volatile jint _compilation_id;
   static volatile jint _osr_compilation_id;
 
   static int  _last_compile_type;

@@ -217,12 +223,15 @@
   static int _sum_nmethod_code_size;
   static long _peak_compilation_time;
 
   static volatile int _print_compilation_warning;
 
-  static JavaThread* make_thread(const char* name, CompileQueue* queue, CompilerCounters* counters, AbstractCompiler* comp, bool compiler_thread, TRAPS);
-  static void init_compiler_sweeper_threads(int c1_compiler_count, int c2_compiler_count);
+  static oop create_thread_oop(const char* name, TRAPS);
+  static JavaThread* make_thread(jobject thread_oop, CompileQueue* queue,
+                                 AbstractCompiler* comp, bool compiler_thread, TRAPS);
+  static void init_compiler_sweeper_threads();
+  static void possibly_add_compiler_threads();
   static bool compilation_is_complete  (const methodHandle& method, int osr_bci, int comp_level);
   static bool compilation_is_prohibited(const methodHandle& method, int osr_bci, int comp_level, bool excluded);
   static void preload_classes          (const methodHandle& method, TRAPS);
 
   static CompileTask* create_compile_task(CompileQueue*       queue,

@@ -364,10 +373,23 @@
   static void print_last_compile();
 
   // compiler name for debugging
   static const char* compiler_name(int comp_level);
 
+  // Provide access to compiler thread Java objects
+  static jobject compiler1_object(int idx) {
+    assert(_compiler1_objects != NULL, "must be initialized");
+    assert(idx < c1_count, "oob");
+    return _compiler1_objects[idx];
+  }
+
+  static jobject compiler2_object(int idx) {
+    assert(_compiler2_objects != NULL, "must be initialized");
+    assert(idx < c2_count, "oob");
+    return _compiler2_objects[idx];
+  }
+
   static int get_total_compile_count() {          return _total_compile_count; }
   static int get_total_bailout_count() {          return _total_bailout_count; }
   static int get_total_invalidated_count() {      return _total_invalidated_count; }
   static int get_total_native_compile_count() {   return _total_native_compile_count; }
   static int get_total_osr_compile_count() {      return _total_osr_compile_count; }