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tools: implement mkcodecache as an executable
This patch implement a mkcodecache executable on top of the `NativeModuleLoader` singleton. This makes it possible to build a Node.js binary with embedded code cache without building itself using the code cache stub - the cache is now initialized by `NativeModuleEnv` instead which can be refactored out of the mkcodecache dependencies. PR-URL: #27161 Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,165 @@ | ||
| #include "cache_builder.h" | ||
| #include <iostream> | ||
| #include <map> | ||
| #include <sstream> | ||
| #include <vector> | ||
| #include <cstdlib> | ||
| #include "util.h" | ||
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| #include "node_native_module.h" | ||
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| namespace node { | ||
| namespace native_module { | ||
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|
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| using v8::Context; | ||
| using v8::Function; | ||
| using v8::Isolate; | ||
| using v8::Local; | ||
| using v8::MaybeLocal; | ||
| using v8::ScriptCompiler; | ||
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| static std::string GetDefName(const std::string& id) { | ||
| char buf[64] = {0}; | ||
| size_t size = id.size(); | ||
| CHECK_LT(size, sizeof(buf)); | ||
| for (size_t i = 0; i < size; ++i) { | ||
| char ch = id[i]; | ||
| buf[i] = (ch == '-' || ch == '/') ? '_' : ch; | ||
| } | ||
| return buf; | ||
| } | ||
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| static std::string FormatSize(size_t size) { | ||
| char buf[64] = {0}; | ||
| if (size < 1024) { | ||
| snprintf(buf, sizeof(buf), "%.2fB", static_cast<double>(size)); | ||
| } else if (size < 1024 * 1024) { | ||
| snprintf(buf, sizeof(buf), "%.2fKB", static_cast<double>(size / 1024)); | ||
| } else { | ||
| snprintf( | ||
| buf, sizeof(buf), "%.2fMB", static_cast<double>(size / 1024 / 1024)); | ||
| } | ||
| return buf; | ||
| } | ||
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| static std::string GetDefinition(const std::string& id, | ||
| size_t size, | ||
| const uint8_t* data) { | ||
| std::stringstream ss; | ||
| ss << "static const uint8_t " << GetDefName(id) << "[] = {\n"; | ||
| for (size_t i = 0; i < size; ++i) { | ||
| uint8_t ch = data[i]; | ||
| ss << std::to_string(ch) << (i == size - 1 ? '\n' : ','); | ||
| } | ||
| ss << "};"; | ||
| return ss.str(); | ||
| } | ||
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| static std::string GetInitializer(const std::string& id) { | ||
| std::string def_name = GetDefName(id); | ||
| char buf[256] = {0}; | ||
| snprintf(buf, | ||
| sizeof(buf), | ||
| "code_cache->emplace(\n" | ||
| " \"%s\",\n" | ||
| " std::make_unique<v8::ScriptCompiler::CachedData>" | ||
| "(%s, static_cast<int>(arraysize(%s)), policy)\n" | ||
| ");", | ||
| id.c_str(), | ||
| def_name.c_str(), | ||
| def_name.c_str()); | ||
| return buf; | ||
| } | ||
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| static std::string GenerateCodeCache( | ||
| std::map<std::string, ScriptCompiler::CachedData*> data, | ||
| std::vector<std::string> ids, | ||
| bool log_progress) { | ||
| std::stringstream ss; | ||
| ss << R"(#include <cinttypes> | ||
| #include "node_native_module_env.h" | ||
| // This file is generated by tools/mkcodecache | ||
| // and is used when configure is run with \`--code-cache-path\` | ||
| namespace node { | ||
| namespace native_module { | ||
| )"; | ||
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| size_t total = 0; | ||
| for (const auto& x : data) { | ||
| const std::string& id = x.first; | ||
| ScriptCompiler::CachedData* cached_data = x.second; | ||
| total += cached_data->length; | ||
| std::string def = GetDefinition(id, cached_data->length, cached_data->data); | ||
| ss << def << "\n\n"; | ||
| if (log_progress) { | ||
| std::cout << "Generated cache for " << id | ||
| << ", size = " << FormatSize(cached_data->length) | ||
| << ", total = " << FormatSize(total) << "\n"; | ||
| } | ||
| } | ||
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| ss << R"(void NativeModuleEnv::InitializeCodeCache() { | ||
| NativeModuleCacheMap* code_cache = | ||
| NativeModuleLoader::GetInstance()->code_cache(); | ||
| if (!code_cache->empty()) { | ||
| return; | ||
| } | ||
| auto policy = v8::ScriptCompiler::CachedData::BufferPolicy::BufferNotOwned; | ||
| )"; | ||
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| for (const auto& x : data) { | ||
| const std::string& id = x.first; | ||
| ss << GetInitializer(id) << "\n\n"; | ||
| } | ||
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| ss << R"(} | ||
| } // namespace native_module | ||
| } // namespace node | ||
| )"; | ||
| return ss.str(); | ||
| } | ||
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| std::string CodeCacheBuilder::Generate(Local<Context> context) { | ||
| NativeModuleLoader* loader = NativeModuleLoader::GetInstance(); | ||
| std::vector<std::string> ids = loader->GetModuleIds(); | ||
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| std::vector<std::string> modules; | ||
| modules.reserve(ids.size()); | ||
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| std::map<std::string, ScriptCompiler::CachedData*> data; | ||
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| NativeModuleLoader::Result result; | ||
| for (const auto& id : ids) { | ||
| // TODO(joyeecheung): we can only compile the modules that can be | ||
| // required here because the parameters for other types of builtins | ||
| // are still very flexible. We should look into auto-generating | ||
| // the paramters from the source somehow. | ||
| if (loader->CanBeRequired(id.c_str())) { | ||
| modules.push_back(id); | ||
| USE(loader->CompileAsModule(context, id.c_str(), &result)); | ||
| ScriptCompiler::CachedData* cached_data = | ||
| loader->GetCodeCache(id.c_str()); | ||
| if (cached_data == nullptr) { | ||
| // TODO(joyeecheung): display syntax errors | ||
| std::cerr << "Failed to complile " << id << "\n"; | ||
| } else { | ||
| data.emplace(id, cached_data); | ||
| } | ||
| } | ||
| } | ||
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| char env_buf[32]; | ||
| size_t env_size = sizeof(env_buf); | ||
| int ret = uv_os_getenv("NODE_DEBUG", env_buf, &env_size); | ||
| bool log_progress = false; | ||
| if (ret == 0 && strcmp(env_buf, "mkcodecache") == 0) { | ||
| log_progress = true; | ||
| } | ||
| return GenerateCodeCache(data, modules, log_progress); | ||
| } | ||
|
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| } // namespace native_module | ||
| } // namespace node |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,16 @@ | ||
| #ifndef TOOLS_CODE_CACHE_CACHE_BUILDER_H_ | ||
| #define TOOLS_CODE_CACHE_CACHE_BUILDER_H_ | ||
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| #include <string> | ||
| #include "v8.h" | ||
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| namespace node { | ||
| namespace native_module { | ||
| class CodeCacheBuilder { | ||
| public: | ||
| static std::string Generate(v8::Local<v8::Context> context); | ||
| }; | ||
| } // namespace native_module | ||
| } // namespace node | ||
|
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| #endif // TOOLS_CODE_CACHE_CACHE_BUILDER_H_ |
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