145   bool is_valid();
 146 
 147   bool use_version_1_0_semantics();  // agent asked for version 1.0
 148   bool use_version_1_1_semantics();  // agent asked for version 1.1
 149   bool use_version_1_2_semantics();  // agent asked for version 1.2
 150 
 151   bool is_retransformable()                        { return _is_retransformable; }
 152 
 153   static ByteSize jvmti_external_offset() {
 154     return byte_offset_of(JvmtiEnvBase, _jvmti_external);
 155   };
 156 
 157   static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) {
 158     return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset()));
 159   };
 160 
 161   jvmtiCapabilities *get_capabilities()             { return &_current_capabilities; }
 162 
 163   jvmtiCapabilities *get_prohibited_capabilities()  { return &_prohibited_capabilities; }
 164 




 165   bool early_vmstart_env() {
 166     return get_capabilities()->can_generate_early_vmstart != 0;
 167   }
 168 
 169   static char** get_all_native_method_prefixes(int* count_ptr);
 170 
 171   // This test will answer true when all environments have been disposed and some have
 172   // not yet been deallocated.  As a result, this test should only be used as an
 173   // optimization for the no environment case.
 174   static bool environments_might_exist() {
 175     return head_environment() != NULL;
 176   }
 177 
 178   static void check_for_periodic_clean_up();
 179 
 180   JvmtiEnvEventEnable *env_event_enable() {
 181     return &_env_event_enable;
 182   }
 183 
 184   jvmtiError allocate(jlong size, unsigned char** mem_ptr) {

 145   bool is_valid();
 146 
 147   bool use_version_1_0_semantics();  // agent asked for version 1.0
 148   bool use_version_1_1_semantics();  // agent asked for version 1.1
 149   bool use_version_1_2_semantics();  // agent asked for version 1.2
 150 
 151   bool is_retransformable()                        { return _is_retransformable; }
 152 
 153   static ByteSize jvmti_external_offset() {
 154     return byte_offset_of(JvmtiEnvBase, _jvmti_external);
 155   };
 156 
 157   static JvmtiEnv* JvmtiEnv_from_jvmti_env(jvmtiEnv *env) {
 158     return (JvmtiEnv*)((intptr_t)env - in_bytes(jvmti_external_offset()));
 159   };
 160 
 161   jvmtiCapabilities *get_capabilities()             { return &_current_capabilities; }
 162 
 163   jvmtiCapabilities *get_prohibited_capabilities()  { return &_prohibited_capabilities; }
 164 
 165   bool early_class_hook_env() {
 166     return get_capabilities()->can_generate_early_class_hook_events != 0;
 167   }
 168 
 169   bool early_vmstart_env() {
 170     return get_capabilities()->can_generate_early_vmstart != 0;
 171   }
 172 
 173   static char** get_all_native_method_prefixes(int* count_ptr);
 174 
 175   // This test will answer true when all environments have been disposed and some have
 176   // not yet been deallocated.  As a result, this test should only be used as an
 177   // optimization for the no environment case.
 178   static bool environments_might_exist() {
 179     return head_environment() != NULL;
 180   }
 181 
 182   static void check_for_periodic_clean_up();
 183 
 184   JvmtiEnvEventEnable *env_event_enable() {
 185     return &_env_event_enable;
 186   }
 187 
 188   jvmtiError allocate(jlong size, unsigned char** mem_ptr) {