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authorLei Zhang <thestig@chromium.org>2015-10-03 10:00:24 -0700
committerLei Zhang <thestig@chromium.org>2015-10-03 10:00:24 -0700
commit9b6735445f20ae17b883b5739bf79a7c1f99e139 (patch)
treea2adde2847a3bb7ab8a8c5b00124a81c2a1e118f /fpdfsdk/src/jsapi/fxjs_v8.cpp
parent3dedace9623fef6161a8666e53a4ab2b9be61e4c (diff)
downloadpdfium-9b6735445f20ae17b883b5739bf79a7c1f99e139.tar.xz
Refcount external V8 isolate initialization / release.chromium/2527
BUG=531339 R=tsepez@chromium.org Review URL: https://codereview.chromium.org/1377463005 .
Diffstat (limited to 'fpdfsdk/src/jsapi/fxjs_v8.cpp')
-rw-r--r--fpdfsdk/src/jsapi/fxjs_v8.cpp25
1 files changed, 21 insertions, 4 deletions
diff --git a/fpdfsdk/src/jsapi/fxjs_v8.cpp b/fpdfsdk/src/jsapi/fxjs_v8.cpp
index ff45a7a0ce..bea9f4c4d8 100644
--- a/fpdfsdk/src/jsapi/fxjs_v8.cpp
+++ b/fpdfsdk/src/jsapi/fxjs_v8.cpp
@@ -4,9 +4,10 @@
// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
-#include "../../../core/include/fxcrt/fx_basic.h"
#include "../../include/jsapi/fxjs_v8.h"
+#include "../../../core/include/fxcrt/fx_basic.h"
+
const wchar_t kFXJSValueNameString[] = L"string";
const wchar_t kFXJSValueNameNumber[] = L"number";
const wchar_t kFXJSValueNameBoolean[] = L"boolean";
@@ -23,6 +24,7 @@ const wchar_t kFXJSValueNameUndefined[] = L"undefined";
static const unsigned int kPerContextDataIndex = 3u;
static unsigned int g_embedderDataSlot = 1u;
static v8::Isolate* g_isolate = nullptr;
+static size_t g_isolate_ref_count = 0;
static FXJS_ArrayBufferAllocator* g_arrayBufferAllocator = nullptr;
static v8::Global<v8::ObjectTemplate>* g_DefaultGlobalObjectTemplate = nullptr;
@@ -132,11 +134,17 @@ void FXJS_ArrayBufferAllocator::Free(void* data, size_t length) {
}
void FXJS_Initialize(unsigned int embedderDataSlot, v8::Isolate* pIsolate) {
+ if (g_isolate) {
+ ASSERT(g_embedderDataSlot == embedderDataSlot);
+ ASSERT(g_isolate == pIsolate);
+ return;
+ }
g_embedderDataSlot = embedderDataSlot;
g_isolate = pIsolate;
}
void FXJS_Release() {
+ ASSERT(!g_isolate || g_isolate_ref_count == 0);
g_DefaultGlobalObjectTemplate = nullptr;
g_isolate = nullptr;
@@ -271,6 +279,9 @@ void FXJS_InitializeRuntime(v8::Isolate* pIsolate,
IFXJS_Runtime* pFXRuntime,
IFXJS_Context* context,
v8::Global<v8::Context>& v8PersistentContext) {
+ if (pIsolate == g_isolate)
+ ++g_isolate_ref_count;
+
v8::Isolate::Scope isolate_scope(pIsolate);
v8::HandleScope handle_scope(pIsolate);
v8::Local<v8::Context> v8Context =
@@ -299,7 +310,7 @@ void FXJS_InitializeRuntime(v8::Isolate* pIsolate,
.ToLocalChecked()
->SetAlignedPointerInInternalField(0, new CFXJS_PrivateData(i));
- if (pObjDef->m_pConstructor)
+ if (pObjDef->m_pConstructor) {
pObjDef->m_pConstructor(context, v8Context->Global()
->GetPrototype()
->ToObject(v8Context)
@@ -308,6 +319,7 @@ void FXJS_InitializeRuntime(v8::Isolate* pIsolate,
->GetPrototype()
->ToObject(v8Context)
.ToLocalChecked());
+ }
}
} else {
v8::Local<v8::Object> obj = FXJS_NewFxDynamicObj(pIsolate, context, i);
@@ -320,6 +332,9 @@ void FXJS_InitializeRuntime(v8::Isolate* pIsolate,
void FXJS_ReleaseRuntime(v8::Isolate* pIsolate,
v8::Global<v8::Context>& v8PersistentContext) {
+ if (pIsolate == g_isolate && --g_isolate_ref_count > 0)
+ return;
+
v8::Isolate::Scope isolate_scope(pIsolate);
v8::HandleScope handle_scope(pIsolate);
v8::Local<v8::Context> context =
@@ -409,10 +424,11 @@ v8::Local<v8::Object> FXJS_NewFxDynamicObj(v8::Isolate* pIsolate,
return v8::Local<v8::Object>();
obj->SetAlignedPointerInInternalField(0, new CFXJS_PrivateData(nObjDefnID));
- if (pObjDef->m_pConstructor)
+ if (pObjDef->m_pConstructor) {
pObjDef->m_pConstructor(
pJSContext, obj,
context->Global()->GetPrototype()->ToObject(context).ToLocalChecked());
+ }
return obj;
}
@@ -513,10 +529,11 @@ void* FXJS_GetPrivate(v8::Isolate* pIsolate, v8::Local<v8::Object> pObj) {
// It could be a global proxy object.
v8::Local<v8::Value> v = pObj->GetPrototype();
v8::Local<v8::Context> context = pIsolate->GetCurrentContext();
- if (v->IsObject())
+ if (v->IsObject()) {
pPrivateData = (CFXJS_PrivateData*)v->ToObject(context)
.ToLocalChecked()
->GetAlignedPointerFromInternalField(0);
+ }
}
return pPrivateData ? pPrivateData->pPrivate : nullptr;
}