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-rw-r--r--js/loader/LoadedScript.h32
1 files changed, 30 insertions, 2 deletions
diff --git a/js/loader/LoadedScript.h b/js/loader/LoadedScript.h
index ca6d1fc179..5759800c27 100644
--- a/js/loader/LoadedScript.h
+++ b/js/loader/LoadedScript.h
@@ -12,12 +12,14 @@
#include "mozilla/Maybe.h"
#include "mozilla/MaybeOneOf.h"
+#include "mozilla/MemoryReporting.h"
#include "mozilla/Utf8.h" // mozilla::Utf8Unit
#include "mozilla/Variant.h"
#include "mozilla/Vector.h"
#include "nsCOMPtr.h"
#include "nsCycleCollectionParticipant.h"
+#include "nsIMemoryReporter.h"
#include "jsapi.h"
#include "ScriptKind.h"
@@ -39,7 +41,17 @@ class ModuleScript;
class EventScript;
class LoadContextBase;
-class LoadedScript : public nsISupports {
+// A LoadedScript is a place where the Script is stored once it is loaded. It is
+// not unique to a load, and can be shared across loads as long as it is
+// properly ref-counted by each load instance.
+//
+// When the load is not performed, the URI represents the resource to be loaded,
+// and it is replaced by the absolute resource location once loaded.
+//
+// As the LoadedScript can be shared, using the SharedSubResourceCache, it is
+// exposed to the memory reporter such that sharing might be accounted for
+// properly.
+class LoadedScript : public nsIMemoryReporter {
ScriptKind mKind;
const mozilla::dom::ReferrerPolicy mReferrerPolicy;
RefPtr<ScriptFetchOptions> mFetchOptions;
@@ -53,7 +65,17 @@ class LoadedScript : public nsISupports {
virtual ~LoadedScript();
public:
- NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+ // When the memory should be reported, register it using RegisterMemoryReport,
+ // and make sure to call SizeOfIncludingThis in the enclosing container.
+ //
+ // Each reported script would be listed under
+ // `explicit/js/script/loaded-script/<kind>`.
+ void RegisterMemoryReport();
+ size_t SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const;
+
+ public:
+ NS_DECL_CYCLE_COLLECTING_ISUPPORTS;
+ NS_DECL_NSIMEMORYREPORTER;
NS_DECL_CYCLE_COLLECTION_CLASS(LoadedScript)
bool IsClassicScript() const { return mKind == ScriptKind::eClassic; }
@@ -332,6 +354,8 @@ class ModuleScript final : public LoadedScript {
JS::Heap<JSObject*> mModuleRecord;
JS::Heap<JS::Value> mParseError;
JS::Heap<JS::Value> mErrorToRethrow;
+ bool mForPreload;
+ bool mHadImportMap;
bool mDebuggerDataInitialized;
~ModuleScript();
@@ -352,6 +376,8 @@ class ModuleScript final : public LoadedScript {
void SetModuleRecord(JS::Handle<JSObject*> aModuleRecord);
void SetParseError(const JS::Value& aError);
void SetErrorToRethrow(const JS::Value& aError);
+ void SetForPreload(bool aValue);
+ void SetHadImportMap(bool aValue);
void SetDebuggerDataInitialized();
JSObject* ModuleRecord() const { return mModuleRecord; }
@@ -360,6 +386,8 @@ class ModuleScript final : public LoadedScript {
JS::Value ErrorToRethrow() const { return mErrorToRethrow; }
bool HasParseError() const { return !mParseError.isUndefined(); }
bool HasErrorToRethrow() const { return !mErrorToRethrow.isUndefined(); }
+ bool ForPreload() const { return mForPreload; }
+ bool HadImportMap() const { return mHadImportMap; }
bool DebuggerDataInitialized() const { return mDebuggerDataInitialized; }
void Shutdown();