hseigel@4465: /* Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
minqi@4267:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
minqi@4267:  *
minqi@4267:  * This code is free software; you can redistribute it and/or modify it
minqi@4267:  * under the terms of the GNU General Public License version 2 only, as
minqi@4267:  * published by the Free Software Foundation.
minqi@4267:  *
minqi@4267:  * This code is distributed in the hope that it will be useful, but WITHOUT
minqi@4267:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
minqi@4267:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
minqi@4267:  * version 2 for more details (a copy is included in the LICENSE file that
minqi@4267:  * accompanied this code).
minqi@4267:  *
minqi@4267:  * You should have received a copy of the GNU General Public License version
minqi@4267:  * 2 along with this work; if not, write to the Free Software Foundation,
minqi@4267:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
minqi@4267:  *
minqi@4267:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
minqi@4267:  * or visit www.oracle.com if you need additional information or have any
minqi@4267:  * questions.
minqi@4267:  *
minqi@4267:  */
minqi@4267: 
minqi@4267: #include "precompiled.hpp"
minqi@4267: #include "ci/ciMethodData.hpp"
minqi@4267: #include "ci/ciReplay.hpp"
minqi@4267: #include "ci/ciUtilities.hpp"
minqi@4267: #include "compiler/compileBroker.hpp"
minqi@4267: #include "memory/allocation.inline.hpp"
minqi@4267: #include "memory/oopFactory.hpp"
minqi@4267: #include "memory/resourceArea.hpp"
minqi@4267: #include "utilities/copy.hpp"
jprovino@4542: #include "utilities/macros.hpp"
minqi@4267: 
coleenp@4304: #ifndef PRODUCT
minqi@4267: 
minqi@4267: // ciReplay
minqi@4267: 
minqi@4267: typedef struct _ciMethodDataRecord {
minqi@4267:   const char* klass;
minqi@4267:   const char* method;
minqi@4267:   const char* signature;
minqi@4267:   int state;
minqi@4267:   int current_mileage;
minqi@4267:   intptr_t* data;
minqi@4267:   int data_length;
minqi@4267:   char* orig_data;
minqi@4267:   int orig_data_length;
minqi@4267:   int oops_length;
minqi@4267:   jobject* oops_handles;
minqi@4267:   int* oops_offsets;
minqi@4267: } ciMethodDataRecord;
minqi@4267: 
minqi@4267: typedef struct _ciMethodRecord {
minqi@4267:   const char* klass;
minqi@4267:   const char* method;
minqi@4267:   const char* signature;
minqi@4267:   int instructions_size;
minqi@4267:   int interpreter_invocation_count;
minqi@4267:   int interpreter_throwout_count;
minqi@4267:   int invocation_counter;
minqi@4267:   int backedge_counter;
minqi@4267: } ciMethodRecord;
minqi@4267: 
minqi@4267: class CompileReplay;
minqi@4267: static CompileReplay* replay_state;
minqi@4267: 
minqi@4267: class CompileReplay : public StackObj {
minqi@4267:  private:
minqi@4267:   FILE*   stream;
minqi@4267:   Thread* thread;
minqi@4267:   Handle  protection_domain;
minqi@4267:   Handle  loader;
minqi@4267: 
minqi@4267:   GrowableArray<ciMethodRecord*>     ci_method_records;
minqi@4267:   GrowableArray<ciMethodDataRecord*> ci_method_data_records;
minqi@4267: 
minqi@4267:   const char* _error_message;
minqi@4267: 
minqi@4267:   char* bufptr;
minqi@4267:   char* buffer;
minqi@4267:   int   buffer_length;
minqi@4267:   int   buffer_end;
minqi@4267:   int   line_no;
minqi@4267: 
minqi@4267:  public:
minqi@4267:   CompileReplay(const char* filename, TRAPS) {
minqi@4267:     thread = THREAD;
minqi@4267:     loader = Handle(thread, SystemDictionary::java_system_loader());
minqi@4267:     stream = fopen(filename, "rt");
minqi@4267:     if (stream == NULL) {
vlivanov@5027:       fprintf(stderr, "ERROR: Can't open replay file %s\n", filename);
minqi@4267:     }
minqi@4267:     buffer_length = 32;
minqi@4267:     buffer = NEW_RESOURCE_ARRAY(char, buffer_length);
minqi@4267:     _error_message = NULL;
minqi@4267: 
minqi@4267:     test();
minqi@4267:   }
minqi@4267: 
minqi@4267:   ~CompileReplay() {
minqi@4267:     if (stream != NULL) fclose(stream);
minqi@4267:   }
minqi@4267: 
minqi@4267:   void test() {
minqi@4267:     strcpy(buffer, "1 2 foo 4 bar 0x9 \"this is it\"");
minqi@4267:     bufptr = buffer;
minqi@4267:     assert(parse_int("test") == 1, "what");
minqi@4267:     assert(parse_int("test") == 2, "what");
minqi@4267:     assert(strcmp(parse_string(), "foo") == 0, "what");
minqi@4267:     assert(parse_int("test") == 4, "what");
minqi@4267:     assert(strcmp(parse_string(), "bar") == 0, "what");
minqi@4267:     assert(parse_intptr_t("test") == 9, "what");
minqi@4267:     assert(strcmp(parse_quoted_string(), "this is it") == 0, "what");
minqi@4267:   }
minqi@4267: 
minqi@4267:   bool had_error() {
minqi@4267:     return _error_message != NULL || thread->has_pending_exception();
minqi@4267:   }
minqi@4267: 
minqi@4267:   bool can_replay() {
minqi@4267:     return !(stream == NULL || had_error());
minqi@4267:   }
minqi@4267: 
minqi@4267:   void report_error(const char* msg) {
minqi@4267:     _error_message = msg;
minqi@4267:     // Restore the buffer contents for error reporting
minqi@4267:     for (int i = 0; i < buffer_end; i++) {
minqi@4267:       if (buffer[i] == '\0') buffer[i] = ' ';
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267:   int parse_int(const char* label) {
minqi@4267:     if (had_error()) {
minqi@4267:       return 0;
minqi@4267:     }
minqi@4267: 
minqi@4267:     int v = 0;
minqi@4267:     int read;
minqi@4267:     if (sscanf(bufptr, "%i%n", &v, &read) != 1) {
minqi@4267:       report_error(label);
minqi@4267:     } else {
minqi@4267:       bufptr += read;
minqi@4267:     }
minqi@4267:     return v;
minqi@4267:   }
minqi@4267: 
minqi@4267:   intptr_t parse_intptr_t(const char* label) {
minqi@4267:     if (had_error()) {
minqi@4267:       return 0;
minqi@4267:     }
minqi@4267: 
minqi@4267:     intptr_t v = 0;
minqi@4267:     int read;
minqi@4267:     if (sscanf(bufptr, INTPTR_FORMAT "%n", &v, &read) != 1) {
minqi@4267:       report_error(label);
minqi@4267:     } else {
minqi@4267:       bufptr += read;
minqi@4267:     }
minqi@4267:     return v;
minqi@4267:   }
minqi@4267: 
minqi@4267:   void skip_ws() {
minqi@4267:     // Skip any leading whitespace
minqi@4267:     while (*bufptr == ' ' || *bufptr == '\t') {
minqi@4267:       bufptr++;
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267: 
minqi@4267:   char* scan_and_terminate(char delim) {
minqi@4267:     char* str = bufptr;
minqi@4267:     while (*bufptr != delim && *bufptr != '\0') {
minqi@4267:       bufptr++;
minqi@4267:     }
minqi@4267:     if (*bufptr != '\0') {
minqi@4267:       *bufptr++ = '\0';
minqi@4267:     }
minqi@4267:     if (bufptr == str) {
minqi@4267:       // nothing here
minqi@4267:       return NULL;
minqi@4267:     }
minqi@4267:     return str;
minqi@4267:   }
minqi@4267: 
minqi@4267:   char* parse_string() {
minqi@4267:     if (had_error()) return NULL;
minqi@4267: 
minqi@4267:     skip_ws();
minqi@4267:     return scan_and_terminate(' ');
minqi@4267:   }
minqi@4267: 
minqi@4267:   char* parse_quoted_string() {
minqi@4267:     if (had_error()) return NULL;
minqi@4267: 
minqi@4267:     skip_ws();
minqi@4267: 
minqi@4267:     if (*bufptr == '"') {
minqi@4267:       bufptr++;
minqi@4267:       return scan_and_terminate('"');
minqi@4267:     } else {
minqi@4267:       return scan_and_terminate(' ');
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267:   const char* parse_escaped_string() {
minqi@4267:     char* result = parse_quoted_string();
minqi@4267:     if (result != NULL) {
minqi@4267:       unescape_string(result);
minqi@4267:     }
minqi@4267:     return result;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Look for the tag 'tag' followed by an
minqi@4267:   bool parse_tag_and_count(const char* tag, int& length) {
minqi@4267:     const char* t = parse_string();
minqi@4267:     if (t == NULL) {
minqi@4267:       return false;
minqi@4267:     }
minqi@4267: 
minqi@4267:     if (strcmp(tag, t) != 0) {
minqi@4267:       report_error(tag);
minqi@4267:       return false;
minqi@4267:     }
minqi@4267:     length = parse_int("parse_tag_and_count");
minqi@4267:     return !had_error();
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Parse a sequence of raw data encoded as bytes and return the
minqi@4267:   // resulting data.
minqi@4267:   char* parse_data(const char* tag, int& length) {
minqi@4267:     if (!parse_tag_and_count(tag, length)) {
minqi@4267:       return NULL;
minqi@4267:     }
minqi@4267: 
minqi@4267:     char * result = NEW_RESOURCE_ARRAY(char, length);
minqi@4267:     for (int i = 0; i < length; i++) {
minqi@4267:       int val = parse_int("data");
minqi@4267:       result[i] = val;
minqi@4267:     }
minqi@4267:     return result;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Parse a standard chunk of data emitted as:
minqi@4267:   //   'tag' <length> # # ...
minqi@4267:   // Where each # is an intptr_t item
minqi@4267:   intptr_t* parse_intptr_data(const char* tag, int& length) {
minqi@4267:     if (!parse_tag_and_count(tag, length)) {
minqi@4267:       return NULL;
minqi@4267:     }
minqi@4267: 
minqi@4267:     intptr_t* result = NEW_RESOURCE_ARRAY(intptr_t, length);
minqi@4267:     for (int i = 0; i < length; i++) {
minqi@4267:       skip_ws();
minqi@4267:       intptr_t val = parse_intptr_t("data");
minqi@4267:       result[i] = val;
minqi@4267:     }
minqi@4267:     return result;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Parse a possibly quoted version of a symbol into a symbolOop
minqi@4267:   Symbol* parse_symbol(TRAPS) {
minqi@4267:     const char* str = parse_escaped_string();
minqi@4267:     if (str != NULL) {
minqi@4267:       Symbol* sym = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
minqi@4267:       return sym;
minqi@4267:     }
minqi@4267:     return NULL;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Parse a valid klass name and look it up
minqi@4267:   Klass* parse_klass(TRAPS) {
minqi@4267:     const char* str = parse_escaped_string();
minqi@4267:     Symbol* klass_name = SymbolTable::lookup(str, (int)strlen(str), CHECK_NULL);
minqi@4267:     if (klass_name != NULL) {
minqi@4267:       Klass* k = SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, THREAD);
minqi@4267:       if (HAS_PENDING_EXCEPTION) {
minqi@4267:         oop throwable = PENDING_EXCEPTION;
minqi@4267:         java_lang_Throwable::print(throwable, tty);
minqi@4267:         tty->cr();
minqi@4267:         report_error(str);
minqi@4267:         return NULL;
minqi@4267:       }
minqi@4267:       return k;
minqi@4267:     }
minqi@4267:     return NULL;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Lookup a klass
minqi@4267:   Klass* resolve_klass(const char* klass, TRAPS) {
minqi@4267:     Symbol* klass_name = SymbolTable::lookup(klass, (int)strlen(klass), CHECK_NULL);
minqi@4267:     return SystemDictionary::resolve_or_fail(klass_name, loader, protection_domain, true, CHECK_NULL);
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Parse the standard tuple of <klass> <name> <signature>
minqi@4267:   Method* parse_method(TRAPS) {
minqi@4267:     InstanceKlass* k = (InstanceKlass*)parse_klass(CHECK_NULL);
minqi@4267:     Symbol* method_name = parse_symbol(CHECK_NULL);
minqi@4267:     Symbol* method_signature = parse_symbol(CHECK_NULL);
minqi@4267:     Method* m = k->find_method(method_name, method_signature);
minqi@4267:     if (m == NULL) {
minqi@4267:       report_error("can't find method");
minqi@4267:     }
minqi@4267:     return m;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Process each line of the replay file executing each command until
minqi@4267:   // the file ends.
minqi@4267:   void process(TRAPS) {
minqi@4267:     line_no = 1;
minqi@4267:     int pos = 0;
minqi@4267:     int c = getc(stream);
minqi@4267:     while(c != EOF) {
minqi@4267:       if (pos + 1 >= buffer_length) {
minqi@4267:         int newl = buffer_length * 2;
minqi@4267:         char* newb = NEW_RESOURCE_ARRAY(char, newl);
minqi@4267:         memcpy(newb, buffer, pos);
minqi@4267:         buffer = newb;
minqi@4267:         buffer_length = newl;
minqi@4267:       }
minqi@4267:       if (c == '\n') {
minqi@4267:         // null terminate it, reset the pointer and process the line
minqi@4267:         buffer[pos] = '\0';
minqi@4267:         buffer_end = pos++;
minqi@4267:         bufptr = buffer;
minqi@4267:         process_command(CHECK);
minqi@4267:         if (had_error()) {
minqi@4267:           tty->print_cr("Error while parsing line %d: %s\n", line_no, _error_message);
minqi@4267:           tty->print_cr("%s", buffer);
minqi@4267:           return;
minqi@4267:         }
minqi@4267:         pos = 0;
minqi@4267:         buffer_end = 0;
minqi@4267:         line_no++;
minqi@4267:       } else if (c == '\r') {
minqi@4267:         // skip LF
minqi@4267:       } else {
minqi@4267:         buffer[pos++] = c;
minqi@4267:       }
minqi@4267:       c = getc(stream);
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267:   void process_command(TRAPS) {
minqi@4267:     char* cmd = parse_string();
minqi@4267:     if (cmd == NULL) {
minqi@4267:       return;
minqi@4267:     }
minqi@4267:     if (strcmp("#", cmd) == 0) {
minqi@4267:       // ignore
minqi@4267:     } else if (strcmp("compile", cmd) == 0) {
minqi@4267:       process_compile(CHECK);
minqi@4267:     } else if (strcmp("ciMethod", cmd) == 0) {
minqi@4267:       process_ciMethod(CHECK);
minqi@4267:     } else if (strcmp("ciMethodData", cmd) == 0) {
minqi@4267:       process_ciMethodData(CHECK);
minqi@4267:     } else if (strcmp("staticfield", cmd) == 0) {
minqi@4267:       process_staticfield(CHECK);
minqi@4267:     } else if (strcmp("ciInstanceKlass", cmd) == 0) {
minqi@4267:       process_ciInstanceKlass(CHECK);
minqi@4267:     } else if (strcmp("instanceKlass", cmd) == 0) {
minqi@4267:       process_instanceKlass(CHECK);
minqi@4267: #if INCLUDE_JVMTI
minqi@4267:     } else if (strcmp("JvmtiExport", cmd) == 0) {
minqi@4267:       process_JvmtiExport(CHECK);
minqi@4267: #endif // INCLUDE_JVMTI
minqi@4267:     } else {
minqi@4267:       report_error("unknown command");
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267:   // compile <klass> <name> <signature> <entry_bci>
minqi@4267:   void process_compile(TRAPS) {
minqi@4267:     // methodHandle method;
minqi@4267:     Method* method = parse_method(CHECK);
minqi@4267:     int entry_bci = parse_int("entry_bci");
minqi@4267:     Klass* k = method->method_holder();
minqi@4267:     ((InstanceKlass*)k)->initialize(THREAD);
minqi@4267:     if (HAS_PENDING_EXCEPTION) {
minqi@4267:       oop throwable = PENDING_EXCEPTION;
minqi@4267:       java_lang_Throwable::print(throwable, tty);
minqi@4267:       tty->cr();
minqi@4267:       if (ReplayIgnoreInitErrors) {
minqi@4267:         CLEAR_PENDING_EXCEPTION;
minqi@4267:         ((InstanceKlass*)k)->set_init_state(InstanceKlass::fully_initialized);
minqi@4267:       } else {
minqi@4267:         return;
minqi@4267:       }
minqi@4267:     }
minqi@4267:     // Make sure the existence of a prior compile doesn't stop this one
minqi@4267:     nmethod* nm = (entry_bci != InvocationEntryBci) ? method->lookup_osr_nmethod_for(entry_bci, CompLevel_full_optimization, true) : method->code();
minqi@4267:     if (nm != NULL) {
minqi@4267:       nm->make_not_entrant();
minqi@4267:     }
minqi@4267:     replay_state = this;
minqi@4267:     CompileBroker::compile_method(method, entry_bci, CompLevel_full_optimization,
minqi@4267:                                   methodHandle(), 0, "replay", THREAD);
minqi@4267:     replay_state = NULL;
minqi@4267:     reset();
minqi@4267:   }
minqi@4267: 
minqi@4267:   // ciMethod <klass> <name> <signature> <invocation_counter> <backedge_counter> <interpreter_invocation_count> <interpreter_throwout_count> <instructions_size>
minqi@4267:   //
minqi@4267:   //
minqi@4267:   void process_ciMethod(TRAPS) {
minqi@4267:     Method* method = parse_method(CHECK);
minqi@4267:     ciMethodRecord* rec = new_ciMethod(method);
minqi@4267:     rec->invocation_counter = parse_int("invocation_counter");
minqi@4267:     rec->backedge_counter = parse_int("backedge_counter");
minqi@4267:     rec->interpreter_invocation_count = parse_int("interpreter_invocation_count");
minqi@4267:     rec->interpreter_throwout_count = parse_int("interpreter_throwout_count");
minqi@4267:     rec->instructions_size = parse_int("instructions_size");
minqi@4267:   }
minqi@4267: 
minqi@4267:   // ciMethodData <klass> <name> <signature> <state> <current mileage> orig <length> # # ... data <length> # # ... oops <length>
minqi@4267:   void process_ciMethodData(TRAPS) {
minqi@4267:     Method* method = parse_method(CHECK);
minqi@4267:     /* jsut copied from Method, to build interpret data*/
minqi@4267:     if (InstanceRefKlass::owns_pending_list_lock((JavaThread*)THREAD)) {
minqi@4267:       return;
minqi@4267:     }
minqi@4267:     // methodOopDesc::build_interpreter_method_data(method, CHECK);
minqi@4267:     {
minqi@4267:       // Grab a lock here to prevent multiple
minqi@4267:       // MethodData*s from being created.
minqi@4267:       MutexLocker ml(MethodData_lock, THREAD);
minqi@4267:       if (method->method_data() == NULL) {
minqi@4267:         ClassLoaderData* loader_data = method->method_holder()->class_loader_data();
minqi@4267:         MethodData* method_data = MethodData::allocate(loader_data, method, CHECK);
minqi@4267:         method->set_method_data(method_data);
minqi@4267:       }
minqi@4267:     }
minqi@4267: 
minqi@4267:     // collect and record all the needed information for later
minqi@4267:     ciMethodDataRecord* rec = new_ciMethodData(method);
minqi@4267:     rec->state = parse_int("state");
minqi@4267:     rec->current_mileage = parse_int("current_mileage");
minqi@4267: 
minqi@4267:     rec->orig_data = parse_data("orig", rec->orig_data_length);
minqi@4267:     if (rec->orig_data == NULL) {
minqi@4267:       return;
minqi@4267:     }
minqi@4267:     rec->data = parse_intptr_data("data", rec->data_length);
minqi@4267:     if (rec->data == NULL) {
minqi@4267:       return;
minqi@4267:     }
minqi@4267:     if (!parse_tag_and_count("oops", rec->oops_length)) {
minqi@4267:       return;
minqi@4267:     }
minqi@4267:     rec->oops_handles = NEW_RESOURCE_ARRAY(jobject, rec->oops_length);
minqi@4267:     rec->oops_offsets = NEW_RESOURCE_ARRAY(int, rec->oops_length);
minqi@4267:     for (int i = 0; i < rec->oops_length; i++) {
minqi@4267:       int offset = parse_int("offset");
minqi@4267:       if (had_error()) {
minqi@4267:         return;
minqi@4267:       }
minqi@4267:       Klass* k = parse_klass(CHECK);
minqi@4267:       rec->oops_offsets[i] = offset;
minqi@4267:       rec->oops_handles[i] = (jobject)(new KlassHandle(THREAD, k));
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267:   // instanceKlass <name>
minqi@4267:   //
minqi@4267:   // Loads and initializes the klass 'name'.  This can be used to
minqi@4267:   // create particular class loading environments
minqi@4267:   void process_instanceKlass(TRAPS) {
minqi@4267:     // just load the referenced class
minqi@4267:     Klass* k = parse_klass(CHECK);
minqi@4267:   }
minqi@4267: 
minqi@4267:   // ciInstanceKlass <name> <is_linked> <is_initialized> <length> tag # # # ...
minqi@4267:   //
minqi@4267:   // Load the klass 'name' and link or initialize it.  Verify that the
minqi@4267:   // constant pool is the same length as 'length' and make sure the
minqi@4267:   // constant pool tags are in the same state.
minqi@4267:   void process_ciInstanceKlass(TRAPS) {
minqi@4267:     InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
minqi@4267:     int is_linked = parse_int("is_linked");
minqi@4267:     int is_initialized = parse_int("is_initialized");
minqi@4267:     int length = parse_int("length");
minqi@4267:     if (is_initialized) {
minqi@4267:       k->initialize(THREAD);
minqi@4267:       if (HAS_PENDING_EXCEPTION) {
minqi@4267:         oop throwable = PENDING_EXCEPTION;
minqi@4267:         java_lang_Throwable::print(throwable, tty);
minqi@4267:         tty->cr();
minqi@4267:         if (ReplayIgnoreInitErrors) {
minqi@4267:           CLEAR_PENDING_EXCEPTION;
minqi@4267:           k->set_init_state(InstanceKlass::fully_initialized);
minqi@4267:         } else {
minqi@4267:           return;
minqi@4267:         }
minqi@4267:       }
minqi@4267:     } else if (is_linked) {
minqi@4267:       k->link_class(CHECK);
minqi@4267:     }
minqi@4267:     ConstantPool* cp = k->constants();
minqi@4267:     if (length != cp->length()) {
minqi@4267:       report_error("constant pool length mismatch: wrong class files?");
minqi@4267:       return;
minqi@4267:     }
minqi@4267: 
minqi@4267:     int parsed_two_word = 0;
minqi@4267:     for (int i = 1; i < length; i++) {
minqi@4267:       int tag = parse_int("tag");
minqi@4267:       if (had_error()) {
minqi@4267:         return;
minqi@4267:       }
minqi@4267:       switch (cp->tag_at(i).value()) {
minqi@4267:         case JVM_CONSTANT_UnresolvedClass: {
minqi@4267:           if (tag == JVM_CONSTANT_Class) {
minqi@4267:             tty->print_cr("Resolving klass %s at %d", cp->unresolved_klass_at(i)->as_utf8(), i);
minqi@4267:             Klass* k = cp->klass_at(i, CHECK);
minqi@4267:           }
minqi@4267:           break;
minqi@4267:         }
minqi@4267:         case JVM_CONSTANT_Long:
minqi@4267:         case JVM_CONSTANT_Double:
minqi@4267:           parsed_two_word = i + 1;
minqi@4267: 
minqi@4267:         case JVM_CONSTANT_ClassIndex:
minqi@4267:         case JVM_CONSTANT_StringIndex:
minqi@4267:         case JVM_CONSTANT_String:
minqi@4267:         case JVM_CONSTANT_UnresolvedClassInError:
minqi@4267:         case JVM_CONSTANT_Fieldref:
minqi@4267:         case JVM_CONSTANT_Methodref:
minqi@4267:         case JVM_CONSTANT_InterfaceMethodref:
minqi@4267:         case JVM_CONSTANT_NameAndType:
minqi@4267:         case JVM_CONSTANT_Utf8:
minqi@4267:         case JVM_CONSTANT_Integer:
minqi@4267:         case JVM_CONSTANT_Float:
minqi@4267:           if (tag != cp->tag_at(i).value()) {
minqi@4267:             report_error("tag mismatch: wrong class files?");
minqi@4267:             return;
minqi@4267:           }
minqi@4267:           break;
minqi@4267: 
minqi@4267:         case JVM_CONSTANT_Class:
minqi@4267:           if (tag == JVM_CONSTANT_Class) {
minqi@4267:           } else if (tag == JVM_CONSTANT_UnresolvedClass) {
minqi@4267:             tty->print_cr("Warning: entry was unresolved in the replay data");
minqi@4267:           } else {
minqi@4267:             report_error("Unexpected tag");
minqi@4267:             return;
minqi@4267:           }
minqi@4267:           break;
minqi@4267: 
minqi@4267:         case 0:
minqi@4267:           if (parsed_two_word == i) continue;
minqi@4267: 
minqi@4267:         default:
vlivanov@5027:           fatal(err_msg_res("Unexpected tag: %d", cp->tag_at(i).value()));
minqi@4267:           break;
minqi@4267:       }
minqi@4267: 
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Initialize a class and fill in the value for a static field.
minqi@4267:   // This is useful when the compile was dependent on the value of
minqi@4267:   // static fields but it's impossible to properly rerun the static
minqi@4267:   // initiailizer.
minqi@4267:   void process_staticfield(TRAPS) {
minqi@4267:     InstanceKlass* k = (InstanceKlass *)parse_klass(CHECK);
minqi@4267: 
minqi@4267:     if (ReplaySuppressInitializers == 0 ||
minqi@4267:         ReplaySuppressInitializers == 2 && k->class_loader() == NULL) {
minqi@4267:       return;
minqi@4267:     }
minqi@4267: 
minqi@4267:     assert(k->is_initialized(), "must be");
minqi@4267: 
minqi@4267:     const char* field_name = parse_escaped_string();;
minqi@4267:     const char* field_signature = parse_string();
minqi@4267:     fieldDescriptor fd;
minqi@4267:     Symbol* name = SymbolTable::lookup(field_name, (int)strlen(field_name), CHECK);
minqi@4267:     Symbol* sig = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
minqi@4267:     if (!k->find_local_field(name, sig, &fd) ||
minqi@4267:         !fd.is_static() ||
minqi@4267:         fd.has_initial_value()) {
minqi@4267:       report_error(field_name);
minqi@4267:       return;
minqi@4267:     }
minqi@4267: 
minqi@4267:     oop java_mirror = k->java_mirror();
minqi@4267:     if (field_signature[0] == '[') {
minqi@4267:       int length = parse_int("array length");
minqi@4267:       oop value = NULL;
minqi@4267: 
minqi@4267:       if (field_signature[1] == '[') {
minqi@4267:         // multi dimensional array
minqi@4267:         ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
minqi@4267:         int rank = 0;
minqi@4267:         while (field_signature[rank] == '[') {
minqi@4267:           rank++;
minqi@4267:         }
minqi@4267:         int* dims = NEW_RESOURCE_ARRAY(int, rank);
minqi@4267:         dims[0] = length;
minqi@4267:         for (int i = 1; i < rank; i++) {
minqi@4267:           dims[i] = 1; // These aren't relevant to the compiler
minqi@4267:         }
minqi@4267:         value = kelem->multi_allocate(rank, dims, CHECK);
minqi@4267:       } else {
minqi@4267:         if (strcmp(field_signature, "[B") == 0) {
minqi@4267:           value = oopFactory::new_byteArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[Z") == 0) {
minqi@4267:           value = oopFactory::new_boolArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[C") == 0) {
minqi@4267:           value = oopFactory::new_charArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[S") == 0) {
minqi@4267:           value = oopFactory::new_shortArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[F") == 0) {
minqi@4267:           value = oopFactory::new_singleArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[D") == 0) {
minqi@4267:           value = oopFactory::new_doubleArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[I") == 0) {
minqi@4267:           value = oopFactory::new_intArray(length, CHECK);
minqi@4267:         } else if (strcmp(field_signature, "[J") == 0) {
minqi@4267:           value = oopFactory::new_longArray(length, CHECK);
minqi@4267:         } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
minqi@4267:           KlassHandle kelem = resolve_klass(field_signature + 1, CHECK);
minqi@4267:           value = oopFactory::new_objArray(kelem(), length, CHECK);
minqi@4267:         } else {
minqi@4267:           report_error("unhandled array staticfield");
minqi@4267:         }
minqi@4267:       }
minqi@4267:       java_mirror->obj_field_put(fd.offset(), value);
minqi@4267:     } else {
minqi@4267:       const char* string_value = parse_escaped_string();
minqi@4267:       if (strcmp(field_signature, "I") == 0) {
minqi@4267:         int value = atoi(string_value);
minqi@4267:         java_mirror->int_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "B") == 0) {
minqi@4267:         int value = atoi(string_value);
minqi@4267:         java_mirror->byte_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "C") == 0) {
minqi@4267:         int value = atoi(string_value);
minqi@4267:         java_mirror->char_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "S") == 0) {
minqi@4267:         int value = atoi(string_value);
minqi@4267:         java_mirror->short_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "Z") == 0) {
minqi@4267:         int value = atol(string_value);
minqi@4267:         java_mirror->bool_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "J") == 0) {
minqi@4267:         jlong value;
hseigel@4465:         if (sscanf(string_value, JLONG_FORMAT, &value) != 1) {
minqi@4267:           fprintf(stderr, "Error parsing long: %s\n", string_value);
minqi@4267:           return;
minqi@4267:         }
minqi@4267:         java_mirror->long_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "F") == 0) {
minqi@4267:         float value = atof(string_value);
minqi@4267:         java_mirror->float_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "D") == 0) {
minqi@4267:         double value = atof(string_value);
minqi@4267:         java_mirror->double_field_put(fd.offset(), value);
minqi@4267:       } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
minqi@4267:         Handle value = java_lang_String::create_from_str(string_value, CHECK);
minqi@4267:         java_mirror->obj_field_put(fd.offset(), value());
minqi@4267:       } else if (field_signature[0] == 'L') {
minqi@4267:         Symbol* klass_name = SymbolTable::lookup(field_signature, (int)strlen(field_signature), CHECK);
minqi@4267:         KlassHandle kelem = resolve_klass(field_signature, CHECK);
minqi@4267:         oop value = ((InstanceKlass*)kelem())->allocate_instance(CHECK);
minqi@4267:         java_mirror->obj_field_put(fd.offset(), value);
minqi@4267:       } else {
minqi@4267:         report_error("unhandled staticfield");
minqi@4267:       }
minqi@4267:     }
minqi@4267:   }
minqi@4267: 
minqi@4267: #if INCLUDE_JVMTI
minqi@4267:   void process_JvmtiExport(TRAPS) {
minqi@4267:     const char* field = parse_string();
minqi@4267:     bool value = parse_int("JvmtiExport flag") != 0;
minqi@4267:     if (strcmp(field, "can_access_local_variables") == 0) {
minqi@4267:       JvmtiExport::set_can_access_local_variables(value);
minqi@4267:     } else if (strcmp(field, "can_hotswap_or_post_breakpoint") == 0) {
minqi@4267:       JvmtiExport::set_can_hotswap_or_post_breakpoint(value);
minqi@4267:     } else if (strcmp(field, "can_post_on_exceptions") == 0) {
minqi@4267:       JvmtiExport::set_can_post_on_exceptions(value);
minqi@4267:     } else {
minqi@4267:       report_error("Unrecognized JvmtiExport directive");
minqi@4267:     }
minqi@4267:   }
minqi@4267: #endif // INCLUDE_JVMTI
minqi@4267: 
minqi@4267:   // Create and initialize a record for a ciMethod
minqi@4267:   ciMethodRecord* new_ciMethod(Method* method) {
minqi@4267:     ciMethodRecord* rec = NEW_RESOURCE_OBJ(ciMethodRecord);
minqi@4267:     rec->klass =  method->method_holder()->name()->as_utf8();
minqi@4267:     rec->method = method->name()->as_utf8();
minqi@4267:     rec->signature = method->signature()->as_utf8();
minqi@4267:     ci_method_records.append(rec);
minqi@4267:     return rec;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Lookup data for a ciMethod
minqi@4267:   ciMethodRecord* find_ciMethodRecord(Method* method) {
minqi@4267:     const char* klass_name =  method->method_holder()->name()->as_utf8();
minqi@4267:     const char* method_name = method->name()->as_utf8();
minqi@4267:     const char* signature = method->signature()->as_utf8();
minqi@4267:     for (int i = 0; i < ci_method_records.length(); i++) {
minqi@4267:       ciMethodRecord* rec = ci_method_records.at(i);
minqi@4267:       if (strcmp(rec->klass, klass_name) == 0 &&
minqi@4267:           strcmp(rec->method, method_name) == 0 &&
minqi@4267:           strcmp(rec->signature, signature) == 0) {
minqi@4267:         return rec;
minqi@4267:       }
minqi@4267:     }
minqi@4267:     return NULL;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Create and initialize a record for a ciMethodData
minqi@4267:   ciMethodDataRecord* new_ciMethodData(Method* method) {
minqi@4267:     ciMethodDataRecord* rec = NEW_RESOURCE_OBJ(ciMethodDataRecord);
minqi@4267:     rec->klass =  method->method_holder()->name()->as_utf8();
minqi@4267:     rec->method = method->name()->as_utf8();
minqi@4267:     rec->signature = method->signature()->as_utf8();
minqi@4267:     ci_method_data_records.append(rec);
minqi@4267:     return rec;
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Lookup data for a ciMethodData
minqi@4267:   ciMethodDataRecord* find_ciMethodDataRecord(Method* method) {
minqi@4267:     const char* klass_name =  method->method_holder()->name()->as_utf8();
minqi@4267:     const char* method_name = method->name()->as_utf8();
minqi@4267:     const char* signature = method->signature()->as_utf8();
minqi@4267:     for (int i = 0; i < ci_method_data_records.length(); i++) {
minqi@4267:       ciMethodDataRecord* rec = ci_method_data_records.at(i);
minqi@4267:       if (strcmp(rec->klass, klass_name) == 0 &&
minqi@4267:           strcmp(rec->method, method_name) == 0 &&
minqi@4267:           strcmp(rec->signature, signature) == 0) {
minqi@4267:         return rec;
minqi@4267:       }
minqi@4267:     }
minqi@4267:     return NULL;
minqi@4267:   }
minqi@4267: 
minqi@4267:   const char* error_message() {
minqi@4267:     return _error_message;
minqi@4267:   }
minqi@4267: 
minqi@4267:   void reset() {
minqi@4267:     _error_message = NULL;
minqi@4267:     ci_method_records.clear();
minqi@4267:     ci_method_data_records.clear();
minqi@4267:   }
minqi@4267: 
minqi@4267:   // Take an ascii string contain \u#### escapes and convert it to utf8
minqi@4267:   // in place.
minqi@4267:   static void unescape_string(char* value) {
minqi@4267:     char* from = value;
minqi@4267:     char* to = value;
minqi@4267:     while (*from != '\0') {
minqi@4267:       if (*from != '\\') {
minqi@4267:         *from++ = *to++;
minqi@4267:       } else {
minqi@4267:         switch (from[1]) {
minqi@4267:           case 'u': {
minqi@4267:             from += 2;
minqi@4267:             jchar value=0;
minqi@4267:             for (int i=0; i<4; i++) {
minqi@4267:               char c = *from++;
minqi@4267:               switch (c) {
minqi@4267:                 case '0': case '1': case '2': case '3': case '4':
minqi@4267:                 case '5': case '6': case '7': case '8': case '9':
minqi@4267:                   value = (value << 4) + c - '0';
minqi@4267:                   break;
minqi@4267:                 case 'a': case 'b': case 'c':
minqi@4267:                 case 'd': case 'e': case 'f':
minqi@4267:                   value = (value << 4) + 10 + c - 'a';
minqi@4267:                   break;
minqi@4267:                 case 'A': case 'B': case 'C':
minqi@4267:                 case 'D': case 'E': case 'F':
minqi@4267:                   value = (value << 4) + 10 + c - 'A';
minqi@4267:                   break;
minqi@4267:                 default:
minqi@4267:                   ShouldNotReachHere();
minqi@4267:               }
minqi@4267:             }
minqi@4267:             UNICODE::convert_to_utf8(&value, 1, to);
minqi@4267:             to++;
minqi@4267:             break;
minqi@4267:           }
minqi@4267:           case 't': *to++ = '\t'; from += 2; break;
minqi@4267:           case 'n': *to++ = '\n'; from += 2; break;
minqi@4267:           case 'r': *to++ = '\r'; from += 2; break;
minqi@4267:           case 'f': *to++ = '\f'; from += 2; break;
minqi@4267:           default:
minqi@4267:             ShouldNotReachHere();
minqi@4267:         }
minqi@4267:       }
minqi@4267:     }
minqi@4267:     *from = *to;
minqi@4267:   }
minqi@4267: };
minqi@4267: 
minqi@4267: void ciReplay::replay(TRAPS) {
minqi@4267:   int exit_code = replay_impl(THREAD);
minqi@4267: 
minqi@4267:   Threads::destroy_vm();
minqi@4267: 
minqi@4267:   vm_exit(exit_code);
minqi@4267: }
minqi@4267: 
minqi@4267: int ciReplay::replay_impl(TRAPS) {
minqi@4267:   HandleMark hm;
minqi@4267:   ResourceMark rm;
minqi@4267:   // Make sure we don't run with background compilation
minqi@4267:   BackgroundCompilation = false;
minqi@4267: 
minqi@4267:   if (ReplaySuppressInitializers > 2) {
minqi@4267:     // ReplaySuppressInitializers > 2 means that we want to allow
minqi@4267:     // normal VM bootstrap but once we get into the replay itself
minqi@4267:     // don't allow any intializers to be run.
minqi@4267:     ReplaySuppressInitializers = 1;
minqi@4267:   }
minqi@4267: 
vlivanov@5027:   if (FLAG_IS_DEFAULT(ReplayDataFile)) {
vlivanov@5027:     tty->print_cr("ERROR: no compiler replay data file specified (use -XX:ReplayDataFile=replay_pid12345.txt).");
vlivanov@5027:     return 1;
vlivanov@5027:   }
vlivanov@5027: 
minqi@4267:   // Load and parse the replay data
minqi@4267:   CompileReplay rp(ReplayDataFile, THREAD);
minqi@4267:   int exit_code = 0;
minqi@4267:   if (rp.can_replay()) {
minqi@4267:     rp.process(THREAD);
minqi@4267:   } else {
minqi@4267:     exit_code = 1;
minqi@4267:     return exit_code;
minqi@4267:   }
minqi@4267: 
minqi@4267:   if (HAS_PENDING_EXCEPTION) {
minqi@4267:     oop throwable = PENDING_EXCEPTION;
minqi@4267:     CLEAR_PENDING_EXCEPTION;
minqi@4267:     java_lang_Throwable::print(throwable, tty);
minqi@4267:     tty->cr();
minqi@4267:     java_lang_Throwable::print_stack_trace(throwable, tty);
minqi@4267:     tty->cr();
minqi@4267:     exit_code = 2;
minqi@4267:   }
minqi@4267: 
minqi@4267:   if (rp.had_error()) {
minqi@4267:     tty->print_cr("Failed on %s", rp.error_message());
minqi@4267:     exit_code = 1;
minqi@4267:   }
minqi@4267:   return exit_code;
minqi@4267: }
minqi@4267: 
minqi@4267: 
minqi@4267: void ciReplay::initialize(ciMethodData* m) {
minqi@4267:   if (replay_state == NULL) {
minqi@4267:     return;
minqi@4267:   }
minqi@4267: 
minqi@4267:   ASSERT_IN_VM;
minqi@4267:   ResourceMark rm;
minqi@4267: 
minqi@4267:   Method* method = m->get_MethodData()->method();
minqi@4267:   ciMethodDataRecord* rec = replay_state->find_ciMethodDataRecord(method);
minqi@4267:   if (rec == NULL) {
minqi@4267:     // This indicates some mismatch with the original environment and
minqi@4267:     // the replay environment though it's not always enough to
minqi@4267:     // interfere with reproducing a bug
minqi@4267:     tty->print_cr("Warning: requesting ciMethodData record for method with no data: ");
minqi@4267:     method->print_name(tty);
minqi@4267:     tty->cr();
minqi@4267:   } else {
minqi@4267:     m->_state = rec->state;
minqi@4267:     m->_current_mileage = rec->current_mileage;
minqi@4267:     if (rec->data_length != 0) {
minqi@4267:       assert(m->_data_size == rec->data_length * (int)sizeof(rec->data[0]), "must agree");
minqi@4267: 
minqi@4267:       // Write the correct ciObjects back into the profile data
minqi@4267:       ciEnv* env = ciEnv::current();
minqi@4267:       for (int i = 0; i < rec->oops_length; i++) {
minqi@4267:         KlassHandle *h = (KlassHandle *)rec->oops_handles[i];
minqi@4267:         *(ciMetadata**)(rec->data + rec->oops_offsets[i]) =
minqi@4267:           env->get_metadata((*h)());
minqi@4267:       }
minqi@4267:       // Copy the updated profile data into place as intptr_ts
minqi@4267: #ifdef _LP64
minqi@4267:       Copy::conjoint_jlongs_atomic((jlong *)rec->data, (jlong *)m->_data, rec->data_length);
minqi@4267: #else
minqi@4267:       Copy::conjoint_jints_atomic((jint *)rec->data, (jint *)m->_data, rec->data_length);
minqi@4267: #endif
minqi@4267:     }
minqi@4267: 
minqi@4267:     // copy in the original header
minqi@4267:     Copy::conjoint_jbytes(rec->orig_data, (char*)&m->_orig, rec->orig_data_length);
minqi@4267:   }
minqi@4267: }
minqi@4267: 
minqi@4267: 
minqi@4267: bool ciReplay::should_not_inline(ciMethod* method) {
minqi@4267:   if (replay_state == NULL) {
minqi@4267:     return false;
minqi@4267:   }
minqi@4267: 
minqi@4267:   VM_ENTRY_MARK;
minqi@4267:   // ciMethod without a record shouldn't be inlined.
minqi@4267:   return replay_state->find_ciMethodRecord(method->get_Method()) == NULL;
minqi@4267: }
minqi@4267: 
minqi@4267: 
minqi@4267: void ciReplay::initialize(ciMethod* m) {
minqi@4267:   if (replay_state == NULL) {
minqi@4267:     return;
minqi@4267:   }
minqi@4267: 
minqi@4267:   ASSERT_IN_VM;
minqi@4267:   ResourceMark rm;
minqi@4267: 
minqi@4267:   Method* method = m->get_Method();
minqi@4267:   ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
minqi@4267:   if (rec == NULL) {
minqi@4267:     // This indicates some mismatch with the original environment and
minqi@4267:     // the replay environment though it's not always enough to
minqi@4267:     // interfere with reproducing a bug
minqi@4267:     tty->print_cr("Warning: requesting ciMethod record for method with no data: ");
minqi@4267:     method->print_name(tty);
minqi@4267:     tty->cr();
minqi@4267:   } else {
jiangli@4936:     EXCEPTION_CONTEXT;
jiangli@4936:     MethodCounters* mcs = method->method_counters();
minqi@4267:     // m->_instructions_size = rec->instructions_size;
minqi@4267:     m->_instructions_size = -1;
minqi@4267:     m->_interpreter_invocation_count = rec->interpreter_invocation_count;
minqi@4267:     m->_interpreter_throwout_count = rec->interpreter_throwout_count;
jiangli@4936:     if (mcs == NULL) {
jiangli@4936:       mcs = Method::build_method_counters(method, CHECK_AND_CLEAR);
jiangli@4936:     }
jiangli@4936:     mcs->invocation_counter()->_counter = rec->invocation_counter;
jiangli@4936:     mcs->backedge_counter()->_counter = rec->backedge_counter;
minqi@4267:   }
minqi@4267: }
minqi@4267: 
minqi@4267: bool ciReplay::is_loaded(Method* method) {
minqi@4267:   if (replay_state == NULL) {
minqi@4267:     return true;
minqi@4267:   }
minqi@4267: 
minqi@4267:   ASSERT_IN_VM;
minqi@4267:   ResourceMark rm;
minqi@4267: 
minqi@4267:   ciMethodRecord* rec = replay_state->find_ciMethodRecord(method);
minqi@4267:   return rec != NULL;
minqi@4267: }
coleenp@4304: #endif // PRODUCT