src/share/vm/prims/whitebox.cpp

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  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 
  27 #include "memory/universe.hpp"
  28 #include "oops/oop.inline.hpp"
  29 
  30 #include "classfile/symbolTable.hpp"
  31 #include "classfile/classLoaderData.hpp"
  32 
  33 #include "prims/whitebox.hpp"
  34 #include "prims/wbtestmethods/parserTests.hpp"
  35 

  36 #include "runtime/interfaceSupport.hpp"
  37 #include "runtime/os.hpp"
  38 #include "utilities/debug.hpp"
  39 #include "utilities/macros.hpp"
  40 #include "utilities/exceptions.hpp"
  41 
  42 #if INCLUDE_ALL_GCS
  43 #include "gc_implementation/g1/concurrentMark.hpp"
  44 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  45 #include "gc_implementation/g1/heapRegionRemSet.hpp"
  46 #endif // INCLUDE_ALL_GCS
  47 
  48 #ifdef INCLUDE_NMT
  49 #include "services/memTracker.hpp"
  50 #endif // INCLUDE_NMT
  51 
  52 #include "compiler/compileBroker.hpp"
  53 #include "runtime/compilationPolicy.hpp"
  54 
  55 bool WhiteBox::_used = false;


  77       }
  78     }
  79 
  80     bool found() const {
  81         return _found;
  82     }
  83 };
  84 
  85 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
  86   Handle h_name = JNIHandles::resolve(name);
  87   if (h_name.is_null()) return false;
  88   Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
  89   TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
  90 
  91   WBIsKlassAliveClosure closure(sym);
  92   ClassLoaderDataGraph::classes_do(&closure);
  93 
  94   return closure.found();
  95 WB_END
  96 





  97 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
  98   CollectorPolicy * p = Universe::heap()->collector_policy();
  99   gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
 100     SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
 101     p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
 102     p->min_alignment(), p->max_alignment());
 103 }
 104 WB_END
 105 
 106 #if INCLUDE_ALL_GCS
 107 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
 108   G1CollectedHeap* g1 = G1CollectedHeap::heap();
 109   oop result = JNIHandles::resolve(obj);
 110   const HeapRegion* hr = g1->heap_region_containing(result);
 111   return hr->isHumongous();
 112 WB_END
 113 
 114 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
 115   G1CollectedHeap* g1 = G1CollectedHeap::heap();
 116   size_t nr = g1->free_regions();


 415 }
 416 
 417 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
 418   int offset =
 419       offset_for_field(field_name, object, vmSymbols::bool_signature());
 420   bool ret = (object->bool_field(offset) == JNI_TRUE);
 421   return ret;
 422 }
 423 
 424 
 425 #define CC (char*)
 426 
 427 static JNINativeMethod methods[] = {
 428   {CC"getObjectAddress",   CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress  },
 429   {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
 430   {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
 431   {CC"parseCommandLine",
 432       CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
 433       (void*) &WB_ParseCommandLine
 434   },


 435   {CC"printHeapSizes",     CC"()V",                   (void*)&WB_PrintHeapSizes    },
 436 #if INCLUDE_ALL_GCS
 437   {CC"g1InConcurrentMark", CC"()Z",                   (void*)&WB_G1InConcurrentMark},
 438   {CC"g1IsHumongous",      CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous     },
 439   {CC"g1NumFreeRegions",   CC"()J",                   (void*)&WB_G1NumFreeRegions  },
 440   {CC"g1RegionSize",       CC"()I",                   (void*)&WB_G1RegionSize      },
 441 #endif // INCLUDE_ALL_GCS
 442 #ifdef INCLUDE_NMT
 443   {CC"NMTMalloc",           CC"(J)J",                 (void*)&WB_NMTMalloc          },
 444   {CC"NMTFree",             CC"(J)V",                 (void*)&WB_NMTFree            },
 445   {CC"NMTReserveMemory",    CC"(J)J",                 (void*)&WB_NMTReserveMemory   },
 446   {CC"NMTCommitMemory",     CC"(JJ)V",                (void*)&WB_NMTCommitMemory    },
 447   {CC"NMTUncommitMemory",   CC"(JJ)V",                (void*)&WB_NMTUncommitMemory  },
 448   {CC"NMTReleaseMemory",    CC"(JJ)V",                (void*)&WB_NMTReleaseMemory   },
 449   {CC"NMTWaitForDataMerge", CC"()Z",                  (void*)&WB_NMTWaitForDataMerge},
 450 #endif // INCLUDE_NMT
 451   {CC"deoptimizeAll",      CC"()V",                   (void*)&WB_DeoptimizeAll     },
 452   {CC"deoptimizeMethod",   CC"(Ljava/lang/reflect/Executable;Z)I",
 453                                                       (void*)&WB_DeoptimizeMethod  },
 454   {CC"isMethodCompiled",   CC"(Ljava/lang/reflect/Executable;Z)Z",




  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 
  27 #include "memory/universe.hpp"
  28 #include "oops/oop.inline.hpp"
  29 
  30 #include "classfile/symbolTable.hpp"
  31 #include "classfile/classLoaderData.hpp"
  32 
  33 #include "prims/whitebox.hpp"
  34 #include "prims/wbtestmethods/parserTests.hpp"
  35 
  36 #include "runtime/arguments.hpp"
  37 #include "runtime/interfaceSupport.hpp"
  38 #include "runtime/os.hpp"
  39 #include "utilities/debug.hpp"
  40 #include "utilities/macros.hpp"
  41 #include "utilities/exceptions.hpp"
  42 
  43 #if INCLUDE_ALL_GCS
  44 #include "gc_implementation/g1/concurrentMark.hpp"
  45 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
  46 #include "gc_implementation/g1/heapRegionRemSet.hpp"
  47 #endif // INCLUDE_ALL_GCS
  48 
  49 #ifdef INCLUDE_NMT
  50 #include "services/memTracker.hpp"
  51 #endif // INCLUDE_NMT
  52 
  53 #include "compiler/compileBroker.hpp"
  54 #include "runtime/compilationPolicy.hpp"
  55 
  56 bool WhiteBox::_used = false;


  78       }
  79     }
  80 
  81     bool found() const {
  82         return _found;
  83     }
  84 };
  85 
  86 WB_ENTRY(jboolean, WB_IsClassAlive(JNIEnv* env, jobject target, jstring name))
  87   Handle h_name = JNIHandles::resolve(name);
  88   if (h_name.is_null()) return false;
  89   Symbol* sym = java_lang_String::as_symbol(h_name, CHECK_false);
  90   TempNewSymbol tsym(sym); // Make sure to decrement reference count on sym on return
  91 
  92   WBIsKlassAliveClosure closure(sym);
  93   ClassLoaderDataGraph::classes_do(&closure);
  94 
  95   return closure.found();
  96 WB_END
  97 
  98 WB_ENTRY(jlong, WB_GetCompressedOopsMaxHeapSize(JNIEnv* env, jobject o)) {
  99   return (jlong)Arguments::max_heap_for_compressed_oops();
 100 }
 101 WB_END
 102 
 103 WB_ENTRY(void, WB_PrintHeapSizes(JNIEnv* env, jobject o)) {
 104   CollectorPolicy * p = Universe::heap()->collector_policy();
 105   gclog_or_tty->print_cr("Minimum heap "SIZE_FORMAT" Initial heap "
 106     SIZE_FORMAT" Maximum heap "SIZE_FORMAT" Min alignment "SIZE_FORMAT" Max alignment "SIZE_FORMAT,
 107     p->min_heap_byte_size(), p->initial_heap_byte_size(), p->max_heap_byte_size(),
 108     p->min_alignment(), p->max_alignment());
 109 }
 110 WB_END
 111 
 112 #if INCLUDE_ALL_GCS
 113 WB_ENTRY(jboolean, WB_G1IsHumongous(JNIEnv* env, jobject o, jobject obj))
 114   G1CollectedHeap* g1 = G1CollectedHeap::heap();
 115   oop result = JNIHandles::resolve(obj);
 116   const HeapRegion* hr = g1->heap_region_containing(result);
 117   return hr->isHumongous();
 118 WB_END
 119 
 120 WB_ENTRY(jlong, WB_G1NumFreeRegions(JNIEnv* env, jobject o))
 121   G1CollectedHeap* g1 = G1CollectedHeap::heap();
 122   size_t nr = g1->free_regions();


 421 }
 422 
 423 bool WhiteBox::lookup_bool(const char* field_name, oop object) {
 424   int offset =
 425       offset_for_field(field_name, object, vmSymbols::bool_signature());
 426   bool ret = (object->bool_field(offset) == JNI_TRUE);
 427   return ret;
 428 }
 429 
 430 
 431 #define CC (char*)
 432 
 433 static JNINativeMethod methods[] = {
 434   {CC"getObjectAddress",   CC"(Ljava/lang/Object;)J", (void*)&WB_GetObjectAddress  },
 435   {CC"getHeapOopSize",     CC"()I",                   (void*)&WB_GetHeapOopSize    },
 436   {CC"isClassAlive0",      CC"(Ljava/lang/String;)Z", (void*)&WB_IsClassAlive      },
 437   {CC"parseCommandLine",
 438       CC"(Ljava/lang/String;[Lsun/hotspot/parser/DiagnosticCommand;)[Ljava/lang/Object;",
 439       (void*) &WB_ParseCommandLine
 440   },
 441   {CC"getCompressedOopsMaxHeapSize", CC"()J",
 442       (void*)&WB_GetCompressedOopsMaxHeapSize},
 443   {CC"printHeapSizes",     CC"()V",                   (void*)&WB_PrintHeapSizes    },
 444 #if INCLUDE_ALL_GCS
 445   {CC"g1InConcurrentMark", CC"()Z",                   (void*)&WB_G1InConcurrentMark},
 446   {CC"g1IsHumongous",      CC"(Ljava/lang/Object;)Z", (void*)&WB_G1IsHumongous     },
 447   {CC"g1NumFreeRegions",   CC"()J",                   (void*)&WB_G1NumFreeRegions  },
 448   {CC"g1RegionSize",       CC"()I",                   (void*)&WB_G1RegionSize      },
 449 #endif // INCLUDE_ALL_GCS
 450 #ifdef INCLUDE_NMT
 451   {CC"NMTMalloc",           CC"(J)J",                 (void*)&WB_NMTMalloc          },
 452   {CC"NMTFree",             CC"(J)V",                 (void*)&WB_NMTFree            },
 453   {CC"NMTReserveMemory",    CC"(J)J",                 (void*)&WB_NMTReserveMemory   },
 454   {CC"NMTCommitMemory",     CC"(JJ)V",                (void*)&WB_NMTCommitMemory    },
 455   {CC"NMTUncommitMemory",   CC"(JJ)V",                (void*)&WB_NMTUncommitMemory  },
 456   {CC"NMTReleaseMemory",    CC"(JJ)V",                (void*)&WB_NMTReleaseMemory   },
 457   {CC"NMTWaitForDataMerge", CC"()Z",                  (void*)&WB_NMTWaitForDataMerge},
 458 #endif // INCLUDE_NMT
 459   {CC"deoptimizeAll",      CC"()V",                   (void*)&WB_DeoptimizeAll     },
 460   {CC"deoptimizeMethod",   CC"(Ljava/lang/reflect/Executable;Z)I",
 461                                                       (void*)&WB_DeoptimizeMethod  },
 462   {CC"isMethodCompiled",   CC"(Ljava/lang/reflect/Executable;Z)Z",