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135 lines (114 loc) · 4.3 KB
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#ifdef NDEBUG
#undef NDEBUG
#endif
#include "node.h"
#include "uv.h"
#include <assert.h>
// Note: This file is being referred to from doc/api/embedding.md, and excerpts
// from it are included in the documentation. Try to keep these in sync.
// Snapshot support is not part of the embedder API docs yet due to its
// experimental nature, although it is of course documented in node.h.
using node::CommonEnvironmentSetup;
using node::Environment;
using node::MultiIsolatePlatform;
using v8::Context;
using v8::HandleScope;
using v8::Isolate;
using v8::Locker;
using v8::MaybeLocal;
using v8::V8;
using v8::Value;
static int RunNodeInstance(MultiIsolatePlatform* platform,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args);
int main(int argc, char** argv) {
argv = uv_setup_args(argc, argv);
std::vector<std::string> args(argv, argv + argc);
std::unique_ptr<node::InitializationResult> result =
node::InitializeOncePerProcess(
args,
{node::ProcessInitializationFlags::kNoInitializeV8,
node::ProcessInitializationFlags::kNoInitializeNodeV8Platform});
for (const std::string& error : result->errors())
fprintf(stderr, "%s: %s\n", args[0].c_str(), error.c_str());
if (result->early_return() != 0) {
return result->exit_code();
}
std::unique_ptr<MultiIsolatePlatform> platform =
MultiIsolatePlatform::Create(4);
V8::InitializePlatform(platform.get());
V8::Initialize();
int ret =
RunNodeInstance(platform.get(), result->args(), result->exec_args());
V8::Dispose();
V8::DisposePlatform();
node::TearDownOncePerProcess();
return ret;
}
int RunNodeInstance(MultiIsolatePlatform* platform,
const std::vector<std::string>& args,
const std::vector<std::string>& exec_args) {
int exit_code = 0;
node::EmbedderSnapshotData::Pointer snapshot;
auto snapshot_build_mode_it =
std::find(args.begin(), args.end(), "--embedder-snapshot-create");
auto snapshot_arg_it =
std::find(args.begin(), args.end(), "--embedder-snapshot-blob");
if (snapshot_arg_it < args.end() - 1 &&
snapshot_build_mode_it == args.end()) {
FILE* fp = fopen((snapshot_arg_it + 1)->c_str(), "r");
assert(fp != nullptr);
snapshot = node::EmbedderSnapshotData::FromFile(fp);
fclose(fp);
}
std::vector<std::string> errors;
std::unique_ptr<CommonEnvironmentSetup> setup =
snapshot ? CommonEnvironmentSetup::CreateFromSnapshot(
platform, &errors, snapshot.get(), args, exec_args)
: snapshot_build_mode_it != args.end()
? CommonEnvironmentSetup::CreateForSnapshotting(
platform, &errors, args, exec_args)
: CommonEnvironmentSetup::Create(platform, &errors, args, exec_args);
if (!setup) {
for (const std::string& err : errors)
fprintf(stderr, "%s: %s\n", args[0].c_str(), err.c_str());
return 1;
}
Isolate* isolate = setup->isolate();
Environment* env = setup->env();
{
Locker locker(isolate);
Isolate::Scope isolate_scope(isolate);
HandleScope handle_scope(isolate);
Context::Scope context_scope(setup->context());
MaybeLocal<Value> loadenv_ret;
if (snapshot) {
loadenv_ret = node::LoadEnvironment(env, node::StartExecutionCallback{});
} else {
loadenv_ret = node::LoadEnvironment(
env,
// Snapshots do not support userland require()s (yet)
"if (!require('v8').startupSnapshot.isBuildingSnapshot()) {"
" const publicRequire ="
" require('module').createRequire(process.cwd() + '/');"
" globalThis.require = publicRequire;"
"} else globalThis.require = require;"
"globalThis.embedVars = { nön_ascıı: '🏳️🌈' };"
"require('vm').runInThisContext(process.argv[1]);");
}
if (loadenv_ret.IsEmpty()) // There has been a JS exception.
return 1;
exit_code = node::SpinEventLoop(env).FromMaybe(1);
}
if (snapshot_arg_it < args.end() - 1 &&
snapshot_build_mode_it != args.end()) {
snapshot = setup->CreateSnapshot();
assert(snapshot);
FILE* fp = fopen((snapshot_arg_it + 1)->c_str(), "w");
assert(fp != nullptr);
snapshot->ToFile(fp);
fclose(fp);
}
node::Stop(env);
return exit_code;
}