ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
mads.s.ager@gmail.com | 9a4089a | 2008-09-01 08:55:01 +0000 | [diff] [blame] | 28 | // To avoid warnings from <map> on windows we disable exceptions. |
| 29 | #define _HAS_EXCEPTIONS 0 |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 30 | #include <signal.h> |
| 31 | #include <string> |
| 32 | #include <map> |
| 33 | |
| 34 | #include "v8.h" |
| 35 | |
| 36 | #include "bootstrapper.h" |
| 37 | #include "natives.h" |
| 38 | #include "platform.h" |
| 39 | #include "serialize.h" |
| 40 | |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 41 | // use explicit namespace to avoid clashing with types in namespace v8 |
| 42 | namespace i = v8::internal; |
| 43 | using namespace v8; |
| 44 | |
| 45 | static const unsigned int kMaxCounters = 256; |
| 46 | |
| 47 | // A single counter in a counter collection. |
| 48 | class Counter { |
| 49 | public: |
| 50 | static const int kMaxNameSize = 64; |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame^] | 51 | int32_t* Bind(const char* name) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 52 | int i; |
| 53 | for (i = 0; i < kMaxNameSize - 1 && name[i]; i++) { |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame^] | 54 | name_[i] = name[i]; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 55 | } |
| 56 | name_[i] = '\0'; |
| 57 | return &counter_; |
| 58 | } |
| 59 | private: |
| 60 | int32_t counter_; |
| 61 | uint8_t name_[kMaxNameSize]; |
| 62 | }; |
| 63 | |
| 64 | |
| 65 | // A set of counters and associated information. An instance of this |
| 66 | // class is stored directly in the memory-mapped counters file if |
| 67 | // the --save-counters options is used |
| 68 | class CounterCollection { |
| 69 | public: |
| 70 | CounterCollection() { |
| 71 | magic_number_ = 0xDEADFACE; |
| 72 | max_counters_ = kMaxCounters; |
| 73 | max_name_size_ = Counter::kMaxNameSize; |
| 74 | counters_in_use_ = 0; |
| 75 | } |
| 76 | Counter* GetNextCounter() { |
| 77 | if (counters_in_use_ == kMaxCounters) return NULL; |
| 78 | return &counters_[counters_in_use_++]; |
| 79 | } |
| 80 | private: |
| 81 | uint32_t magic_number_; |
| 82 | uint32_t max_counters_; |
| 83 | uint32_t max_name_size_; |
| 84 | uint32_t counters_in_use_; |
| 85 | Counter counters_[kMaxCounters]; |
| 86 | }; |
| 87 | |
| 88 | |
| 89 | // We statically allocate a set of local counters to be used if we |
| 90 | // don't want to store the stats in a memory-mapped file |
| 91 | static CounterCollection local_counters; |
| 92 | static CounterCollection* counters = &local_counters; |
| 93 | |
| 94 | |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame^] | 95 | typedef std::map<std::string, int*> CounterMap; |
| 96 | typedef std::map<std::string, int*>::iterator CounterMapIterator; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 97 | static CounterMap counter_table_; |
| 98 | |
| 99 | // Callback receiver when v8 has a counter to track. |
ager@chromium.org | a74f0da | 2008-12-03 16:05:52 +0000 | [diff] [blame^] | 100 | static int* counter_callback(const char* name) { |
| 101 | std::string counter = name; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 102 | // See if this counter name is already known. |
| 103 | if (counter_table_.find(counter) != counter_table_.end()) |
| 104 | return counter_table_[counter]; |
| 105 | |
| 106 | Counter* ctr = counters->GetNextCounter(); |
| 107 | if (ctr == NULL) return NULL; |
| 108 | int* ptr = ctr->Bind(name); |
| 109 | counter_table_[counter] = ptr; |
| 110 | return ptr; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | // Write C++ code that defines Snapshot::snapshot_ to contain the snapshot |
| 115 | // to the file given by filename. Only the first size chars are written. |
| 116 | static int WriteInternalSnapshotToFile(const char* filename, |
| 117 | const char* str, |
| 118 | int size) { |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 119 | FILE* f = i::OS::FOpen(filename, "wb"); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 120 | if (f == NULL) { |
| 121 | i::OS::PrintError("Cannot open file %s for reading.\n", filename); |
| 122 | return 0; |
| 123 | } |
| 124 | fprintf(f, "// Autogenerated snapshot file. Do not edit.\n\n"); |
| 125 | fprintf(f, "#include \"v8.h\"\n"); |
| 126 | fprintf(f, "#include \"platform.h\"\n\n"); |
| 127 | fprintf(f, "#include \"snapshot.h\"\n\n"); |
| 128 | fprintf(f, "namespace v8 {\nnamespace internal {\n\n"); |
kasper.lund | 4451067 | 2008-07-25 07:37:58 +0000 | [diff] [blame] | 129 | fprintf(f, "const char Snapshot::data_[] = {"); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 130 | int written = 0; |
| 131 | written += fprintf(f, "%i", str[0]); |
| 132 | for (int i = 1; i < size; ++i) { |
| 133 | written += fprintf(f, ",%i", str[i]); |
| 134 | // The following is needed to keep the line length low on Visual C++: |
| 135 | if (i % 512 == 0) fprintf(f, "\n"); |
| 136 | } |
| 137 | fprintf(f, "};\n\n"); |
| 138 | fprintf(f, "int Snapshot::size_ = %d;\n\n", size); |
| 139 | fprintf(f, "} } // namespace v8::internal\n"); |
| 140 | fclose(f); |
| 141 | return written; |
| 142 | } |
| 143 | |
| 144 | |
| 145 | int main(int argc, char** argv) { |
| 146 | #ifdef ENABLE_LOGGING_AND_PROFILING |
| 147 | // By default, log code create information in the snapshot. |
| 148 | i::FLAG_log_code = true; |
| 149 | #endif |
| 150 | // Print the usage if an error occurs when parsing the command line |
| 151 | // flags or if the help flag is set. |
| 152 | int result = i::FlagList::SetFlagsFromCommandLine(&argc, argv, true); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 153 | if (result > 0 || argc != 2 || i::FLAG_help) { |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 154 | ::printf("Usage: %s [flag] ... outfile\n", argv[0]); |
kasperl@chromium.org | b912362 | 2008-09-17 14:05:56 +0000 | [diff] [blame] | 155 | i::FlagList::PrintHelp(); |
ager@chromium.org | 3bf7b91 | 2008-11-17 09:09:45 +0000 | [diff] [blame] | 156 | return !i::FLAG_help; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 157 | } |
| 158 | |
| 159 | v8::V8::SetCounterFunction(counter_callback); |
| 160 | v8::HandleScope scope; |
| 161 | |
kasperl@chromium.org | 41044eb | 2008-10-06 08:24:46 +0000 | [diff] [blame] | 162 | const int kExtensionCount = 1; |
| 163 | const char* extension_list[kExtensionCount] = { "v8/gc" }; |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 164 | v8::ExtensionConfiguration extensions(kExtensionCount, extension_list); |
| 165 | v8::Context::New(&extensions); |
| 166 | |
kasper.lund | 7276f14 | 2008-07-30 08:49:36 +0000 | [diff] [blame] | 167 | // Make sure all builtin scripts are cached. |
| 168 | { HandleScope scope; |
| 169 | for (int i = 0; i < i::Natives::GetBuiltinsCount(); i++) { |
| 170 | i::Bootstrapper::NativesSourceLookup(i); |
| 171 | } |
| 172 | } |
ager@chromium.org | 9258b6b | 2008-09-11 09:11:10 +0000 | [diff] [blame] | 173 | // Get rid of unreferenced scripts with a global GC. |
| 174 | i::Heap::CollectAllGarbage(); |
christian.plesner.hansen | 43d26ec | 2008-07-03 15:10:15 +0000 | [diff] [blame] | 175 | i::Serializer ser; |
| 176 | ser.Serialize(); |
| 177 | char* str; |
| 178 | int len; |
| 179 | ser.Finalize(&str, &len); |
| 180 | |
| 181 | WriteInternalSnapshotToFile(argv[1], str, len); |
| 182 | |
| 183 | i::DeleteArray(str); |
| 184 | |
| 185 | return 0; |
| 186 | } |