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Unified Diff: src/isolate.cc

Issue 2169563003: Revert of Remove stack overflow boilerplate (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 5 months ago
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Index: src/isolate.cc
diff --git a/src/isolate.cc b/src/isolate.cc
index 9a6e6bb33ad007f6465c169e7914016537a29e75..5c7423288ffdf3a36087c8d0e562b79e80f8b9c5 100644
--- a/src/isolate.cc
+++ b/src/isolate.cc
@@ -329,9 +329,16 @@
}
class StackTraceHelper {
+ private:
+ enum FrameSkipMode {
+ SKIP_FIRST,
+ SKIP_UNTIL_SEEN,
+ SKIP_NONE,
+ };
+
public:
- StackTraceHelper(Isolate* isolate, FrameSkipMode mode, Handle<Object> caller)
- : isolate_(isolate), mode_(mode), caller_(caller) {
+ StackTraceHelper(Isolate* isolate, Handle<Object> caller)
+ : isolate_(isolate), caller_(caller) {
// The caller parameter can be used to skip a specific set of frames in the
// stack trace. It can be:
// * null, when called from a standard error constructor. We unconditionally
@@ -340,18 +347,15 @@
// * a JSFunction, when called by the user from Error.captureStackTrace().
// We skip each frame until encountering the caller function.
// * For any other value, all frames are included in the trace.
- switch (mode_) {
- case SKIP_FIRST:
- DCHECK(caller_.is_null());
- skip_next_frame_ = true;
- break;
- case SKIP_UNTIL_SEEN:
- DCHECK(caller_->IsJSFunction());
- skip_next_frame_ = true;
- break;
- case SKIP_NONE:
- skip_next_frame_ = false;
- break;
+ if (caller_.is_null()) {
+ mode_ = SKIP_FIRST;
+ skip_next_frame_ = true;
+ } else if (caller_->IsJSFunction()) {
+ mode_ = SKIP_UNTIL_SEEN;
+ skip_next_frame_ = true;
+ } else {
+ mode_ = SKIP_NONE;
+ skip_next_frame_ = false;
}
encountered_strict_function_ = false;
sloppy_frames_ = 0;
@@ -421,8 +425,8 @@
Isolate* isolate_;
- const FrameSkipMode mode_;
- const Handle<Object> caller_;
+ FrameSkipMode mode_;
+ Handle<Object> caller_;
bool skip_next_frame_;
int sloppy_frames_;
@@ -430,7 +434,6 @@
};
Handle<Object> Isolate::CaptureSimpleStackTrace(Handle<JSReceiver> error_object,
- FrameSkipMode mode,
Handle<Object> caller) {
DisallowJavascriptExecution no_js(this);
@@ -449,7 +452,7 @@
Handle<FixedArray> elements =
factory()->NewFixedArrayWithHoles(initial_size * 4 + 1);
- StackTraceHelper helper(this, mode, caller);
+ StackTraceHelper helper(this, caller);
// First element is reserved to store the number of sloppy frames.
int cursor = 1;
@@ -569,12 +572,10 @@
}
MaybeHandle<JSReceiver> Isolate::CaptureAndSetSimpleStackTrace(
- Handle<JSReceiver> error_object, FrameSkipMode mode,
- Handle<Object> caller) {
+ Handle<JSReceiver> error_object, Handle<Object> caller) {
// Capture stack trace for simple stack trace string formatting.
Handle<Name> key = factory()->stack_trace_symbol();
- Handle<Object> stack_trace =
- CaptureSimpleStackTrace(error_object, mode, caller);
+ Handle<Object> stack_trace = CaptureSimpleStackTrace(error_object, caller);
// TODO(jgruber): Set back to STRICT once we have eagerly formatted traces.
RETURN_ON_EXCEPTION(
this, JSReceiver::SetProperty(error_object, key, stack_trace, SLOPPY),
@@ -959,14 +960,20 @@
Object* Isolate::StackOverflow() {
DisallowJavascriptExecution no_js(this);
HandleScope scope(this);
-
- Handle<JSFunction> fun = range_error_function();
- Handle<Object> msg = factory()->NewStringFromAsciiChecked(
- MessageTemplate::TemplateString(MessageTemplate::kStackOverflow));
+ // At this point we cannot create an Error object using its javascript
+ // constructor. Instead, we copy the pre-constructed boilerplate and
+ // attach the stack trace as a hidden property.
Handle<Object> exception;
- ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
- this, exception, ConstructError(this, fun, fun, msg, SKIP_NONE, true));
-
+ if (bootstrapper()->IsActive()) {
+ // There is no boilerplate to use during bootstrapping.
+ exception = factory()->NewStringFromAsciiChecked(
+ MessageTemplate::TemplateString(MessageTemplate::kStackOverflow));
+ } else {
+ Handle<JSObject> boilerplate = stack_overflow_boilerplate();
+ Handle<JSObject> copy = factory()->CopyJSObject(boilerplate);
+ CaptureAndSetSimpleStackTrace(copy, factory()->undefined_value());
+ exception = copy;
+ }
Throw(*exception, nullptr);
#ifdef VERIFY_HEAP
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