| // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| // Redistribution and use in source and binary forms, with or without |
| // modification, are permitted provided that the following conditions are |
| // met: |
| // |
| // * Redistributions of source code must retain the above copyright |
| // notice, this list of conditions and the following disclaimer. |
| // * Redistributions in binary form must reproduce the above |
| // copyright notice, this list of conditions and the following |
| // disclaimer in the documentation and/or other materials provided |
| // with the distribution. |
| // * Neither the name of Google Inc. nor the names of its |
| // contributors may be used to endorse or promote products derived |
| // from this software without specific prior written permission. |
| // |
| // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| // To avoid warnings from <map> on windows we disable exceptions. |
| #define _HAS_EXCEPTIONS 0 |
| #include <signal.h> |
| #include <string> |
| #include <map> |
| |
| #include "v8.h" |
| |
| #include "bootstrapper.h" |
| #include "natives.h" |
| #include "platform.h" |
| #include "serialize.h" |
| |
| DEFINE_bool(h, false, "print this message"); |
| |
| namespace v8 { namespace internal { |
| #ifdef ENABLE_LOGGING_AND_PROFILING |
| DECLARE_bool(log_code); |
| #endif |
| } } |
| |
| // use explicit namespace to avoid clashing with types in namespace v8 |
| namespace i = v8::internal; |
| using namespace v8; |
| |
| static const unsigned int kMaxCounters = 256; |
| |
| // A single counter in a counter collection. |
| class Counter { |
| public: |
| static const int kMaxNameSize = 64; |
| int32_t* Bind(const wchar_t* name) { |
| int i; |
| for (i = 0; i < kMaxNameSize - 1 && name[i]; i++) { |
| name_[i] = static_cast<char>(name[i]); |
| } |
| name_[i] = '\0'; |
| return &counter_; |
| } |
| private: |
| int32_t counter_; |
| uint8_t name_[kMaxNameSize]; |
| }; |
| |
| |
| // A set of counters and associated information. An instance of this |
| // class is stored directly in the memory-mapped counters file if |
| // the --save-counters options is used |
| class CounterCollection { |
| public: |
| CounterCollection() { |
| magic_number_ = 0xDEADFACE; |
| max_counters_ = kMaxCounters; |
| max_name_size_ = Counter::kMaxNameSize; |
| counters_in_use_ = 0; |
| } |
| Counter* GetNextCounter() { |
| if (counters_in_use_ == kMaxCounters) return NULL; |
| return &counters_[counters_in_use_++]; |
| } |
| private: |
| uint32_t magic_number_; |
| uint32_t max_counters_; |
| uint32_t max_name_size_; |
| uint32_t counters_in_use_; |
| Counter counters_[kMaxCounters]; |
| }; |
| |
| |
| // We statically allocate a set of local counters to be used if we |
| // don't want to store the stats in a memory-mapped file |
| static CounterCollection local_counters; |
| static CounterCollection* counters = &local_counters; |
| |
| |
| typedef std::map<std::wstring, int*> CounterMap; |
| typedef std::map<std::wstring, int*>::iterator CounterMapIterator; |
| static CounterMap counter_table_; |
| |
| // Callback receiver when v8 has a counter to track. |
| static int* counter_callback(const wchar_t* name) { |
| std::wstring counter = name; |
| // See if this counter name is already known. |
| if (counter_table_.find(counter) != counter_table_.end()) |
| return counter_table_[counter]; |
| |
| Counter* ctr = counters->GetNextCounter(); |
| if (ctr == NULL) return NULL; |
| int* ptr = ctr->Bind(name); |
| counter_table_[counter] = ptr; |
| return ptr; |
| } |
| |
| |
| // Write C++ code that defines Snapshot::snapshot_ to contain the snapshot |
| // to the file given by filename. Only the first size chars are written. |
| static int WriteInternalSnapshotToFile(const char* filename, |
| const char* str, |
| int size) { |
| FILE* f = fopen(filename, "wb"); |
| if (f == NULL) { |
| i::OS::PrintError("Cannot open file %s for reading.\n", filename); |
| return 0; |
| } |
| fprintf(f, "// Autogenerated snapshot file. Do not edit.\n\n"); |
| fprintf(f, "#include \"v8.h\"\n"); |
| fprintf(f, "#include \"platform.h\"\n\n"); |
| fprintf(f, "#include \"snapshot.h\"\n\n"); |
| fprintf(f, "namespace v8 {\nnamespace internal {\n\n"); |
| fprintf(f, "const char Snapshot::data_[] = {"); |
| int written = 0; |
| written += fprintf(f, "%i", str[0]); |
| for (int i = 1; i < size; ++i) { |
| written += fprintf(f, ",%i", str[i]); |
| // The following is needed to keep the line length low on Visual C++: |
| if (i % 512 == 0) fprintf(f, "\n"); |
| } |
| fprintf(f, "};\n\n"); |
| fprintf(f, "int Snapshot::size_ = %d;\n\n", size); |
| fprintf(f, "} } // namespace v8::internal\n"); |
| fclose(f); |
| return written; |
| } |
| |
| |
| int main(int argc, char** argv) { |
| #ifdef ENABLE_LOGGING_AND_PROFILING |
| // By default, log code create information in the snapshot. |
| i::FLAG_log_code = true; |
| #endif |
| // Print the usage if an error occurs when parsing the command line |
| // flags or if the help flag is set. |
| int result = i::FlagList::SetFlagsFromCommandLine(&argc, argv, true); |
| if (result > 0 || argc != 2 || FLAG_h) { |
| ::printf("Usage: %s [flag] ... outfile\n", argv[0]); |
| i::FlagList::Print(NULL, false); |
| return !FLAG_h; |
| } |
| |
| v8::V8::SetCounterFunction(counter_callback); |
| v8::HandleScope scope; |
| |
| const int kExtensionCount = 5; |
| const char* extension_list[kExtensionCount] = { "v8/print", |
| "v8/load", |
| "v8/quit", |
| "v8/version", |
| "v8/gc" }; |
| v8::ExtensionConfiguration extensions(kExtensionCount, extension_list); |
| v8::Context::New(&extensions); |
| |
| // Make sure all builtin scripts are cached. |
| { HandleScope scope; |
| for (int i = 0; i < i::Natives::GetBuiltinsCount(); i++) { |
| i::Bootstrapper::NativesSourceLookup(i); |
| } |
| } |
| // Get rid of unreferenced scripts with a global GC. |
| i::Heap::CollectAllGarbage(); |
| i::Serializer ser; |
| ser.Serialize(); |
| char* str; |
| int len; |
| ser.Finalize(&str, &len); |
| |
| WriteInternalSnapshotToFile(argv[1], str, len); |
| |
| i::DeleteArray(str); |
| |
| return 0; |
| } |