jdk8-mips64-public/hotspot: src/share/vm/ci/ciReplay.cpp@c775af091fe9 (annotated)

src/share/vm/ci/ciReplay.cpp@c775af091fe9 (annotated)

src/share/vm/ci/ciReplay.cpp

Mon, 07 Oct 2013 10:41:56 -0700

author: twisti
date: Mon, 07 Oct 2013 10:41:56 -0700
changeset 5907: c775af091fe9
parent 5449: 1b6395189726
child 6217: 849eb7bfceac
permissions: -rw-r--r--

8025566: EXCEPTION_ACCESS_VIOLATION in compiled by C1 String.valueOf method
Reviewed-by: kvn

 /* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #include "precompiled.hpp"
 #include "ci/ciMethodData.hpp"
 #include "ci/ciReplay.hpp"
 #include "ci/ciUtilities.hpp"
 #include "compiler/compileBroker.hpp"
 #include "memory/allocation.inline.hpp"
 #include "memory/oopFactory.hpp"
 #include "memory/resourceArea.hpp"
 #include "utilities/copy.hpp"
 #include "utilities/macros.hpp"
 #ifndef PRODUCT
 // ciReplay
 typedef struct _ciMethodDataRecord {
   const char* klass;
   const char* method;
   const char* signature;
   int state;
   int current_mileage;
   intptr_t* data;
   int data_length;
   char* orig_data;
   int orig_data_length;
   int oops_length;
   jobject* oops_handles;
   int* oops_offsets;
 } ciMethodDataRecord;
 typedef struct _ciMethodRecord {
   const char* klass;
   const char* method;
   const char* signature;
   int instructions_size;
   int interpreter_invocation_count;
   int interpreter_throwout_count;
   int invocation_counter;
   int backedge_counter;
 } ciMethodRecord;
 class CompileReplay;
 static CompileReplay* replay_state;
 class CompileReplay : public StackObj {
  private:
   FILE*   stream;
   Thread* thread;
   Handle  protection_domain;
   Handle  loader;
   GrowableArray<ciMethodRecord*>     ci_method_records;
   GrowableArray<ciMethodDataRecord*> ci_method_data_records;
   const char* _error_message;
   char* bufptr;
   char* buffer;
   int   buffer_length;
   int   buffer_end;
   int   line_no;
  public:
   CompileReplay(const char* filename, TRAPS) {
     thread = THREAD;
     loader = Handle(thread, SystemDictionary::java_system_loader());
     stream = fopen(filename, "rt");
     if (stream == NULL) {
       fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
     }
     buffer_length = 32;
     buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
     _error_message = NULL;
     test();
   }
   ~CompileReplay() {
     if (stream != NULL) fclose(stream);
   }
   void test() {
     strcpy(buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
     bufptr = buffer;
     assert(parse_int("test") == 1, "what");
     assert(parse_int("test") == 2, "what");
     assert(strcmp(parse_string(), "foo") == 0, "what");
     assert(parse_int("test") == 4, "what");
     assert(strcmp(parse_string(), "bar") == 0, "what");
     assert(parse_intptr_t("test") == 9, "what");
     assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
   }
   bool had_error() {
     return _error_message != NULL || thread->has_pending_exception();
   }
   bool can_replay() {
     return !(stream == NULL || had_error());
   }
   void report_error(const char* msg) {
     _error_message = msg;
     // Restore the buffer contents for error reporting
     for (int i = 0; i < buffer_end; i++) {
       if (buffer[i] == '\0') buffer[i] = ' ';
     }
   }
   int parse_int(const char* label) {
     if (had_error()) {
       return 0;
     }
     int v = 0;
     int read;
     if (sscanf(bufptr, "%i%n", &v, &read) != 1) {
       report_error(label);
     } else {
       bufptr += read;
     }
     return v;
   }
   intptr_t parse_intptr_t(const char* label) {
     if (had_error()) {
       return 0;
     }
     intptr_t v = 0;
     int read;
     if (sscanf(bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
       report_error(label);
     } else {
       bufptr += read;
     }
     return v;
   }
   void skip_ws() {
     // Skip any leading whitespace
     while (*bufptr == ' ' || *bufptr == '\t') {
       bufptr++;
     }
   }
   char* scan_and_terminate(char delim) {
     char* str = bufptr;
     while (*bufptr != delim && *bufptr != '\0') {
       bufptr++;
     }
     if (*bufptr != '\0') {
       *bufptr++ = '\0';
     }
     if (bufptr == str) {
       // nothing here
       return NULL;
     }
     return str;
   }
   char* parse_string() {
     if (had_error()) return NULL;
     skip_ws();
     return scan_and_terminate(' ');
   }
   char* parse_quoted_string() {
     if (had_error()) return NULL;
     skip_ws();
     if (*bufptr == '"') {
       bufptr++;
       return scan_and_terminate('"');
     } else {
       return scan_and_terminate(' ');
     }
   }
   const char* parse_escaped_string() {
     char* result = parse_quoted_string();
     if (result != NULL) {
       unescape_string(result);
     }
     return result;
   }
   // Look for the tag 'tag' followed by an
   bool parse_tag_and_count(const char* tag, int& length) {
     const char* t = parse_string();
     if (t == NULL) {
       return false;
     }
     if (strcmp(tag, t) != 0) {
       report_error(tag);
       return false;
     }
     length = parse_int("parse_tag_and_count");
     return !had_error();
   }
   // Parse a sequence of raw data encoded as bytes and return the
   // resulting data.
   char* parse_data(const char* tag, int& length) {
     if (!parse_tag_and_count(tag, length)) {
       return NULL;
     }
     char * result = NEW_RESOURCE_ARRAY(char, length);
     for (int i = 0; i < length; i++) {
       int val = parse_int("data");
       result[i] = val;
     }
     return result;
   }
   // Parse a standard chunk of data emitted as:
   //   'tag' <length> # # ...
   // Where each # is an intptr_t item
   intptr_t* parse_intptr_data(const char* tag, int& length) {
     if (!parse_tag_and_count(tag, length)) {
       return NULL;
     }
     intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
     for (int i = 0; i < length; i++) {
       skip_ws();
       intptr_t val = parse_intptr_t("data");
       result[i] = val;
     }
     return result;
   }
   // Parse a possibly quoted version of a symbol into a symbolOop
   Symbol* parse_symbol(TRAPS) {
     const char* str = parse_escaped_string();
     if (str != NULL) {
       Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
       return sym;
     }
     return NULL;
   }
   // Parse a valid klass name and look it up
   Klass* parse_klass(TRAPS) {
     const char* str = parse_escaped_string();
     Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
     if (klass_name != NULL) {
       Klass* k = SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, THREAD);
       if (HAS_PENDING_EXCEPTION) {
         oop throwable = PENDING_EXCEPTION;
         java_lang_Throwable::print(throwable, tty);
         tty->cr();
         report_error(str);
         return NULL;
       }
       return k;
     }
     return NULL;
   }
   // Lookup a klass
   Klass* resolve_klass(const char* klass, TRAPS) {
     Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);
     return SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, CHECK_NULL);
   }
   // Parse the standard tuple of <klass> <name> <signature>
   Method* parse_method(TRAPS) {
     InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
     Symbol* method_name = parse_symbol(CHECK_NULL);
     Symbol* method_signature = parse_symbol(CHECK_NULL);
     Method* m = k->find_method(method_name, method_signature);
     if (m == NULL) {
       report_error("Can't find method");
     }
     return m;
   }
   // Process each line of the replay file executing each command until
   // the file ends.
   void process(TRAPS) {
     line_no = 1;
     int pos = 0;
     int c = getc(stream);
     while(c != EOF) {
       if (pos + 1 >= buffer_length) {
         int newl = buffer_length * 2;
         char* newb = NEW_RESOURCE_ARRAY(char, newl);
         memcpy(newb, buffer, pos);
         buffer = newb;
         buffer_length = newl;
       }
       if (c == '\n') {
         // null terminate it, reset the pointer and process the line
         buffer[pos] = '\0';
         buffer_end = pos++;
         bufptr = buffer;
         process_command(CHECK);
         if (had_error()) {
           tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
           tty->print_cr("%s", buffer);
           return;
         }
         pos = 0;
         buffer_end = 0;
         line_no++;
       } else if (c == '\r') {
         // skip LF
       } else {
         buffer[pos++] = c;
       }
       c = getc(stream);
     }
   }
   void process_command(TRAPS) {
     char* cmd = parse_string();
     if (cmd == NULL) {
       return;
     }
     if (strcmp("#", cmd) == 0) {
       // ignore
     } else if (strcmp("compile", cmd) == 0) {
       process_compile(CHECK);
     } else if (strcmp("ciMethod", cmd) == 0) {
       process_ciMethod(CHECK);
     } else if (strcmp("ciMethodData", cmd) == 0) {
       process_ciMethodData(CHECK);
     } else if (strcmp("staticfield", cmd) == 0) {
       process_staticfield(CHECK);
     } else if (strcmp("ciInstanceKlass", cmd) == 0) {
       process_ciInstanceKlass(CHECK);
     } else if (strcmp("instanceKlass", cmd) == 0) {
       process_instanceKlass(CHECK);
 #if INCLUDE_JVMTI
     } else if (strcmp("JvmtiExport", cmd) == 0) {
       process_JvmtiExport(CHECK);
 #endif // INCLUDE_JVMTI
     } else {
       report_error("unknown command");
     }
   }
   // validation of comp_level
   bool is_valid_comp_level(int comp_level) {
     const int msg_len = 256;
     char* msg = NULL;
     if (!is_compile(comp_level)) {
       msg = NEW_RESOURCE_ARRAY(char, msg_len);
       jio_snprintf(msg, msg_len, "%d isn't compilation level", comp_level);
     } else if (!TieredCompilation && (comp_level != CompLevel_highest_tier)) {
       msg = NEW_RESOURCE_ARRAY(char, msg_len);
       switch (comp_level) {
         case CompLevel_simple:
           jio_snprintf(msg, msg_len, "compilation level %d requires Client VM or TieredCompilation", comp_level);
           break;
         case CompLevel_full_optimization:
           jio_snprintf(msg, msg_len, "compilation level %d requires Server VM", comp_level);
           break;
         default:
           jio_snprintf(msg, msg_len, "compilation level %d requires TieredCompilation", comp_level);
       }
     }
     if (msg != NULL) {
       report_error(msg);
       return false;
     }
     return true;
   }
   // compile <klass> <name> <signature> <entry_bci> <comp_level>
   void process_compile(TRAPS) {
     Method* method = parse_method(CHECK);
     if (had_error()) return;
     int entry_bci = parse_int("entry_bci");
     const char* comp_level_label = "comp_level";
     int comp_level = parse_int(comp_level_label);
     // old version w/o comp_level
     if (had_error() && (error_message() == comp_level_label)) {
       comp_level = CompLevel_full_optimization;
     }
     if (!is_valid_comp_level(comp_level)) {
       return;
     }
     Klass* k = method->method_holder();
     ((InstanceKlass*)k)->initialize(THREAD);
     if (HAS_PENDING_EXCEPTION) {
       oop throwable = PENDING_EXCEPTION;
       java_lang_Throwable::print(throwable, tty);
       tty->cr();
       if (ReplayIgnoreInitErrors) {
         CLEAR_PENDING_EXCEPTION;
         ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized);
       } else {
         return;
       }
     }
     // Make sure the existence of a prior compile doesn't stop this one
     nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, comp_level, true) : method->code();
     if (nm != NULL) {
       nm->make_not_entrant();
     }
     replay_state = this;
     CompileBroker::compile_method(method, entry_bci, comp_level,
                                   methodHandle(), 0, "replay", THREAD);
     replay_state = NULL;
     reset();
   }
   // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
   //
   //
   void process_ciMethod(TRAPS) {
     Method* method = parse_method(CHECK);
     if (had_error()) return;
     ciMethodRecord* rec = new_ciMethod(method);
     rec->invocation_counter = parse_int("invocation_counter");
     rec->backedge_counter = parse_int("backedge_counter");
     rec->interpreter_invocation_count = parse_int("interpreter_invocation_count");
     rec->interpreter_throwout_count = parse_int("interpreter_throwout_count");
     rec->instructions_size = parse_int("instructions_size");
   }
   // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length>
   void process_ciMethodData(TRAPS) {
     Method* method = parse_method(CHECK);
     if (had_error()) return;
     /* jsut copied from Method, to build interpret data*/
     if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) {
       return;
     }
     // methodOopDesc::build_interpreter_method_data(method, CHECK);
     {
       // Grab a lock here to prevent multiple
       // MethodData*s from being created.
       MutexLocker ml(MethodData_lock, THREAD);
       if (method->method_data() == NULL) {
         ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
         MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
         method->set_method_data(method_data);
       }
     }
     // collect and record all the needed information for later
     ciMethodDataRecord* rec = new_ciMethodData(method);
     rec->state = parse_int("state");
     rec->current_mileage = parse_int("current_mileage");
     rec->orig_data = parse_data("orig", rec->orig_data_length);
     if (rec->orig_data == NULL) {
       return;
     }
     rec->data = parse_intptr_data("data", rec->data_length);
     if (rec->data == NULL) {
       return;
     }
     if (!parse_tag_and_count("oops", rec->oops_length)) {
       return;
     }
     rec->oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->oops_length);
     rec->oops_offsets = NEW_RESOURCE_ARRAY(int, rec->oops_length);
     for (int i = 0; i < rec->oops_length; i++) {
       int offset = parse_int("offset");
       if (had_error()) {
         return;
       }
       Klass* k = parse_klass(CHECK);
       rec->oops_offsets[i] = offset;
       KlassHandle *kh = NEW_C_HEAP_OBJ(KlassHandle, mtCompiler);
       ::new ((void*)kh) KlassHandle(THREAD, k);
       rec->oops_handles[i] = (jobject)kh;
     }
   }
   // instanceKlass <name>
   //
   // Loads and initializes the klass 'name'.  This can be used to
   // create particular class loading environments
   void process_instanceKlass(TRAPS) {
     // just load the referenced class
     Klass* k = parse_klass(CHECK);
   }
   // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
   //
   // Load the klass 'name' and link or initialize it.  Verify that the
   // constant pool is the same length as 'length' and make sure the
   // constant pool tags are in the same state.
   void process_ciInstanceKlass(TRAPS) {
     InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
     int is_linked = parse_int("is_linked");
     int is_initialized = parse_int("is_initialized");
     int length = parse_int("length");
     if (is_initialized) {
       k->initialize(THREAD);
       if (HAS_PENDING_EXCEPTION) {
         oop throwable = PENDING_EXCEPTION;
         java_lang_Throwable::print(throwable, tty);
         tty->cr();
         if (ReplayIgnoreInitErrors) {
           CLEAR_PENDING_EXCEPTION;
           k->set_init_state(InstanceKlass::fully_initialized);
         } else {
           return;
         }
       }
     } else if (is_linked) {
       k->link_class(CHECK);
     }
     ConstantPool* cp = k->constants();
     if (length != cp->length()) {
       report_error("constant pool length mismatch: wrong class files?");
       return;
     }
     int parsed_two_word = 0;
     for (int i = 1; i < length; i++) {
       int tag = parse_int("tag");
       if (had_error()) {
         return;
       }
       switch (cp->tag_at(i).value()) {
         case JVM_CONSTANT_UnresolvedClass: {
           if (tag == JVM_CONSTANT_Class) {
             tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i);
             Klass* k = cp->klass_at(i, CHECK);
           }
           break;
         }
         case JVM_CONSTANT_Long:
         case JVM_CONSTANT_Double:
           parsed_two_word = i + 1;
         case JVM_CONSTANT_ClassIndex:
         case JVM_CONSTANT_StringIndex:
         case JVM_CONSTANT_String:
         case JVM_CONSTANT_UnresolvedClassInError:
         case JVM_CONSTANT_Fieldref:
         case JVM_CONSTANT_Methodref:
         case JVM_CONSTANT_InterfaceMethodref:
         case JVM_CONSTANT_NameAndType:
         case JVM_CONSTANT_Utf8:
         case JVM_CONSTANT_Integer:
         case JVM_CONSTANT_Float:
           if (tag != cp->tag_at(i).value()) {
             report_error("tag mismatch: wrong class files?");
             return;
           }
           break;
         case JVM_CONSTANT_Class:
           if (tag == JVM_CONSTANT_Class) {
           } else if (tag == JVM_CONSTANT_UnresolvedClass) {
             tty->print_cr("Warning: entry was unresolved in the replay data");
           } else {
             report_error("Unexpected tag");
             return;
           }
           break;
         case 0:
           if (parsed_two_word == i) continue;
         default:
           fatal(err_msg_res("Unexpected tag: %d", cp->tag_at(i).value()));
           break;
       }
     }
   }
   // Initialize a class and fill in the value for a static field.
   // This is useful when the compile was dependent on the value of
   // static fields but it's impossible to properly rerun the static
   // initiailizer.
   void process_staticfield(TRAPS) {
     InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
     if (ReplaySuppressInitializers == 0 ||
         ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
       return;
     }
     assert(k->is_initialized(), "must be");
     const char* field_name = parse_escaped_string();;
     const char* field_signature = parse_string();
     fieldDescriptor fd;
     Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
     Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
     if (!k->find_local_field(name, sig, &fd) ||
         !fd.is_static() ||
         fd.has_initial_value()) {
       report_error(field_name);
       return;
     }
     oop java_mirror = k->java_mirror();
     if (field_signature[0] == '[') {
       int length = parse_int("array length");
       oop value = NULL;
       if (field_signature[1] == '[') {
         // multi dimensional array
         ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
         int rank = 0;
         while (field_signature[rank] == '[') {
           rank++;
         }
         int* dims = NEW_RESOURCE_ARRAY(int, rank);
         dims[0] = length;
         for (int i = 1; i < rank; i++) {
           dims[i] = 1; // These aren't relevant to the compiler
         }
         value = kelem->multi_allocate(rank, dims, CHECK);
       } else {
         if (strcmp(field_signature, "[B") == 0) {
           value = oopFactory::new_byteArray(length, CHECK);
         } else if (strcmp(field_signature, "[Z") == 0) {
           value = oopFactory::new_boolArray(length, CHECK);
         } else if (strcmp(field_signature, "[C") == 0) {
           value = oopFactory::new_charArray(length, CHECK);
         } else if (strcmp(field_signature, "[S") == 0) {
           value = oopFactory::new_shortArray(length, CHECK);
         } else if (strcmp(field_signature, "[F") == 0) {
           value = oopFactory::new_singleArray(length, CHECK);
         } else if (strcmp(field_signature, "[D") == 0) {
           value = oopFactory::new_doubleArray(length, CHECK);
         } else if (strcmp(field_signature, "[I") == 0) {
           value = oopFactory::new_intArray(length, CHECK);
         } else if (strcmp(field_signature, "[J") == 0) {
           value = oopFactory::new_longArray(length, CHECK);
         } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
           KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
           value = oopFactory::new_objArray(kelem(), length, CHECK);
         } else {
           report_error("unhandled array staticfield");
         }
       }
       java_mirror->obj_field_put(fd.offset(), value);
     } else {
       const char* string_value = parse_escaped_string();
       if (strcmp(field_signature, "I") == 0) {
         int value = atoi(string_value);
         java_mirror->int_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "B") == 0) {
         int value = atoi(string_value);
         java_mirror->byte_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "C") == 0) {
         int value = atoi(string_value);
         java_mirror->char_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "S") == 0) {
         int value = atoi(string_value);
         java_mirror->short_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "Z") == 0) {
         int value = atol(string_value);
         java_mirror->bool_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "J") == 0) {
         jlong value;
         if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
           fprintf(stderr, "Error parsing long: %s\n", string_value);
           return;
         }
         java_mirror->long_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "F") == 0) {
         float value = atof(string_value);
         java_mirror->float_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "D") == 0) {
         double value = atof(string_value);
         java_mirror->double_field_put(fd.offset(), value);
       } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
         Handle value = java_lang_String::create_from_str(string_value, CHECK);
         java_mirror->obj_field_put(fd.offset(), value());
       } else if (field_signature[0] == 'L') {
         Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
         KlassHandle kelem = resolve_klass(field_signature, CHECK);
         oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK);
         java_mirror->obj_field_put(fd.offset(), value);
       } else {
         report_error("unhandled staticfield");
       }
     }
   }
 #if INCLUDE_JVMTI
   void process_JvmtiExport(TRAPS) {
     const char* field = parse_string();
     bool value = parse_int("JvmtiExport flag") != 0;
     if (strcmp(field, "can_access_local_variables") == 0) {
       JvmtiExport::set_can_access_local_variables(value);
     } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
       JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
     } else if (strcmp(field, "can_post_on_exceptions") == 0) {
       JvmtiExport::set_can_post_on_exceptions(value);
     } else {
       report_error("Unrecognized JvmtiExport directive");
     }
   }
 #endif // INCLUDE_JVMTI
   // Create and initialize a record for a ciMethod
   ciMethodRecord* new_ciMethod(Method* method) {
     ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
     rec->klass =  method->method_holder()->name()->as_utf8();
     rec->method = method->name()->as_utf8();
     rec->signature = method->signature()->as_utf8();
     ci_method_records.append(rec);
     return rec;
   }
   // Lookup data for a ciMethod
   ciMethodRecord* find_ciMethodRecord(Method* method) {
     const char* klass_name =  method->method_holder()->name()->as_utf8();
     const char* method_name = method->name()->as_utf8();
     const char* signature = method->signature()->as_utf8();
     for (int i = 0; i < ci_method_records.length(); i++) {
       ciMethodRecord* rec = ci_method_records.at(i);
       if (strcmp(rec->klass, klass_name) == 0 &&
           strcmp(rec->method, method_name) == 0 &&
           strcmp(rec->signature, signature) == 0) {
         return rec;
       }
     }
     return NULL;
   }
   // Create and initialize a record for a ciMethodData
   ciMethodDataRecord* new_ciMethodData(Method* method) {
     ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
     rec->klass =  method->method_holder()->name()->as_utf8();
     rec->method = method->name()->as_utf8();
     rec->signature = method->signature()->as_utf8();
     ci_method_data_records.append(rec);
     return rec;
   }
   // Lookup data for a ciMethodData
   ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
     const char* klass_name =  method->method_holder()->name()->as_utf8();
     const char* method_name = method->name()->as_utf8();
     const char* signature = method->signature()->as_utf8();
     for (int i = 0; i < ci_method_data_records.length(); i++) {
       ciMethodDataRecord* rec = ci_method_data_records.at(i);
       if (strcmp(rec->klass, klass_name) == 0 &&
           strcmp(rec->method, method_name) == 0 &&
           strcmp(rec->signature, signature) == 0) {
         return rec;
       }
     }
     return NULL;
   }
   const char* error_message() {
     return _error_message;
   }
   void reset() {
     _error_message = NULL;
     ci_method_records.clear();
     ci_method_data_records.clear();
   }
   // Take an ascii string contain \u#### escapes and convert it to utf8
   // in place.
   static void unescape_string(char* value) {
     char* from = value;
     char* to = value;
     while (*from != '\0') {
       if (*from != '\\') {
         *from++ = *to++;
       } else {
         switch (from[1]) {
           case 'u': {
             from += 2;
             jchar value=0;
             for (int i=0; i<4; i++) {
               char c = *from++;
               switch (c) {
                 case '0': case '1': case '2': case '3': case '4':
                 case '5': case '6': case '7': case '8': case '9':
                   value = (value << 4) + c - '0';
                   break;
                 case 'a': case 'b': case 'c':
                 case 'd': case 'e': case 'f':
                   value = (value << 4) + 10 + c - 'a';
                   break;
                 case 'A': case 'B': case 'C':
                 case 'D': case 'E': case 'F':
                   value = (value << 4) + 10 + c - 'A';
                   break;
                 default:
                   ShouldNotReachHere();
               }
             }
             UNICODE::convert_to_utf8(&value, 1, to);
             to++;
             break;
           }
           case 't': *to++ = '\t'; from += 2; break;
           case 'n': *to++ = '\n'; from += 2; break;
           case 'r': *to++ = '\r'; from += 2; break;
           case 'f': *to++ = '\f'; from += 2; break;
           default:
             ShouldNotReachHere();
         }
       }
     }
     *from = *to;
   }
 };
 void ciReplay::replay(TRAPS) {
   int exit_code = replay_impl(THREAD);
   Threads::destroy_vm();
   vm_exit(exit_code);
 }
 int ciReplay::replay_impl(TRAPS) {
   HandleMark hm;
   ResourceMark rm;
   // Make sure we don't run with background compilation
   BackgroundCompilation = false;
   if (ReplaySuppressInitializers > 2) {
     // ReplaySuppressInitializers > 2 means that we want to allow
     // normal VM bootstrap but once we get into the replay itself
     // don't allow any intializers to be run.
     ReplaySuppressInitializers = 1;
   }
   if (FLAG_IS_DEFAULT(ReplayDataFile)) {
     tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
     return 1;
   }
   // Load and parse the replay data
   CompileReplay rp(ReplayDataFile, THREAD);
   int exit_code = 0;
   if (rp.can_replay()) {
     rp.process(THREAD);
   } else {
     exit_code = 1;
     return exit_code;
   }
   if (HAS_PENDING_EXCEPTION) {
     oop throwable = PENDING_EXCEPTION;
     CLEAR_PENDING_EXCEPTION;
     java_lang_Throwable::print(throwable, tty);
     tty->cr();
     java_lang_Throwable::print_stack_trace(throwable, tty);
     tty->cr();
     exit_code = 2;
   }
   if (rp.had_error()) {
     tty->print_cr("Failed on %s", rp.error_message());
     exit_code = 1;
   }
   return exit_code;
 }
 void ciReplay::initialize(ciMethodData* m) {
   if (replay_state == NULL) {
     return;
   }
   ASSERT_IN_VM;
   ResourceMark rm;
   Method* method = m->get_MethodData()->method();
   ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
   if (rec == NULL) {
     // This indicates some mismatch with the original environment and
     // the replay environment though it's not always enough to
     // interfere with reproducing a bug
     tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
     method->print_name(tty);
     tty->cr();
   } else {
     m->_state = rec->state;
     m->_current_mileage = rec->current_mileage;
     if (rec->data_length != 0) {
       assert(m->_data_size == rec->data_length * (int)sizeof(rec->data[0]), "must agree");
       // Write the correct ciObjects back into the profile data
       ciEnv* env = ciEnv::current();
       for (int i = 0; i < rec->oops_length; i++) {
         KlassHandle *h = (KlassHandle *)rec->oops_handles[i];
         *(ciMetadata**)(rec->data + rec->oops_offsets[i]) =
           env->get_metadata((*h)());
       }
       // Copy the updated profile data into place as intptr_ts
 #ifdef _LP64
       Copy::conjoint_jlongs_atomic((jlong *)rec->data, (jlong *)m->_data, rec->data_length);
 #else
       Copy::conjoint_jints_atomic((jint *)rec->data, (jint *)m->_data, rec->data_length);
 #endif
     }
     // copy in the original header
     Copy::conjoint_jbytes(rec->orig_data, (char*)&m->_orig, rec->orig_data_length);
   }
 }
 bool ciReplay::should_not_inline(ciMethod* method) {
   if (replay_state == NULL) {
     return false;
   }
   VM_ENTRY_MARK;
   // ciMethod without a record shouldn't be inlined.
   return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
 }
 void ciReplay::initialize(ciMethod* m) {
   if (replay_state == NULL) {
     return;
   }
   ASSERT_IN_VM;
   ResourceMark rm;
   Method* method = m->get_Method();
   ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
   if (rec == NULL) {
     // This indicates some mismatch with the original environment and
     // the replay environment though it's not always enough to
     // interfere with reproducing a bug
     tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
     method->print_name(tty);
     tty->cr();
   } else {
     EXCEPTION_CONTEXT;
     // m->_instructions_size = rec->instructions_size;
     m->_instructions_size = -1;
     m->_interpreter_invocation_count = rec->interpreter_invocation_count;
     m->_interpreter_throwout_count = rec->interpreter_throwout_count;
     MethodCounters* mcs = method->get_method_counters(CHECK_AND_CLEAR);
     guarantee(mcs != NULL, "method counters allocation failed");
     mcs->invocation_counter()->_counter = rec->invocation_counter;
     mcs->backedge_counter()->_counter = rec->backedge_counter;
   }
 }
 bool ciReplay::is_loaded(Method* method) {
   if (replay_state == NULL) {
     return true;
   }
   ASSERT_IN_VM;
   ResourceMark rm;
   ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
   return rec != NULL;
 }
 #endif // PRODUCT

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/ci/ciReplay.cpp@c775af091fe9 (annotated)

src/share/vm/ci/ciReplay.cpp