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bootstrap: run inspector and event loop in snapshot builder

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This makes --inspect and stdin/out functional in the embedded snapshot,
currently it's not guaranteed that these work perfectly, the
plan is to investigate any out-of-sync states that might appear
in user land snapshots with this while the it is a configure-time
feature.

PR-URL: https://github.com/nodejs/node/pull/42466
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Mohammed Keyvanzadeh <mohammadkeyvanzade94@gmail.com>
Reviewed-By: Khaidi Chu <i@2333.moe>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>
This commit is contained in:
Joyee Cheung 2022-03-24 21:50:55 +08:00
parent c131fbb652
commit 01f6b9543f
No known key found for this signature in database
GPG Key ID: 92B78A53C8303B8D
1 changed files with 17 additions and 2 deletions
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19
src/node_snapshotable.cc
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@ -15,6 +15,10 @@
#include "node_v8.h"
#include "node_v8_platform-inl.h"
#if HAVE_INSPECTOR
#include "inspector/worker_inspector.h" // ParentInspectorHandle
#endif
namespace node {
using v8::Context;
@ -136,7 +140,7 @@ void SnapshotBuilder::Generate(SnapshotData* out,
nullptr,
node::EnvironmentFlags::kDefaultFlags,
{});
// TODO(joyeecheung): run env->InitializeInspector({}) here.
// Run scripts in lib/internal/bootstrap/
{
TryCatch bootstrapCatch(isolate);
@ -153,6 +157,9 @@ void SnapshotBuilder::Generate(SnapshotData* out,
// could also explore snapshotting other kinds of execution modes
// in the future).
if (per_process::cli_options->build_snapshot) {
#if HAVE_INSPECTOR
env->InitializeInspector({});
#endif
TryCatch bootstrapCatch(isolate);
// TODO(joyeecheung): we could use the result for something special,
// like setting up initializers that should be invoked at snapshot
@ -163,7 +170,15 @@ void SnapshotBuilder::Generate(SnapshotData* out,
PrintCaughtException(isolate, context, bootstrapCatch);
}
result.ToLocalChecked();
// TODO(joyeecheung): run SpinEventLoop here.
// FIXME(joyeecheung): right now running the loop in the snapshot
// builder seems to introduces inconsistencies in JS land that need to
// be synchronized again after snapshot restoration.
int exit_code = SpinEventLoop(env).FromMaybe(1);
CHECK_EQ(exit_code, 0);
if (bootstrapCatch.HasCaught()) {
PrintCaughtException(isolate, context, bootstrapCatch);
abort();
}
}
if (per_process::enabled_debug_list.enabled(DebugCategory::MKSNAPSHOT)) {