Thanks for your reply. But I can't find any other conversations by
searching with keywords such like "SetSecondPassCallback", "phantom
handles".
If two Persistent handles refer to the same v8 object, weak callback will
be called twice. So wrappable object will be double-deleted either using
Thanks. So the heap object 's "member data" are initialized by READ_FILEDS
macro which directly read by offset.
在 2018年7月21日星期六 UTC+8上午1:36:42，Jakob Kummerow写道：
>
> ObjectTemplate has no constructor (because it lives on the managed heap,
> where C++ constructors don't make sense). Declaring a
Hi,
I noticed that chromium's sourcecode src/gin/wrappable.cc
use SetSecondPassCallback to make wrappable object deleted, while node.js
does not. So when is SetSecondPassCallback need to be used? what's the
purpose of this api?
I also find a related link
Hi,
ObjectTemplate is declared in v8.h, and it's constructor was declared as
private. But where is the implementation of it's constructor? I can't find
it's source code.
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Thanks for your kindly reply.
What do you mean "Js natives"? Are they some c++ native functions written
in c++ on which v8's build-in js source codes depend?
I noticed that "v8_use_external_startup_data" is only used when "
v8_use_snapshot=true". So I thought "v8_use_external_startup_data"
So what is the result? Have you found the reason that cause code executing
slower?
在 2018年2月23日星期五 UTC+8下午6:59:58，Alexandru Dima写道：
>
> Hi Yang,
>
> I have spent quite some time to create a repro that executes the exact
> same code in the exact same state, once with the code loaded from cached
when v8 is compiled with options "v8_use_snapshot=true
v8_use_external_startup_data=true", two files which are natives_blob.bin
and snapshot_blob.bin will be generated. when we use v8 in our embedder
progroam, *V8::InitializeExternalStartupData *need be called to load the
two files. After
Hi everyone,
I tried to compile v8 v6.4 on windows 7 following the instructions
in https://github.com/v8/v8/wiki/Building-with-GN, and got LNK error 1104
"can not open advapi32.lib". I installed vs2015 and multiple versions of
windows sdk which are
10.0.10150.0, 10.0.10240.0, 10.0.10586.0,
I think I can understand it a bit. Look at the following test case.
THREADED_TEST(SecurityChecks) {
LocalContext env1;
v8::HandleScope handle_scope(env1->GetIsolate());
v8::Local env2 = Context::New(env1->GetIsolate());
Local foo = v8_str("foo");
Local bar = v8_str("bar");
But I called SetSecurityToken to set different token for each context. I
commented out the SetAccessCheckCallback calls to let access to be
controlled only by SetSecurityToken. Even if I add
"SetAccessCheckCallback(AccessAlwaysBlocked);" statement, the cross access
are still allowed in
ur... I still can not get it. In the following modification, I changed
object x by scripts.
*Modification Three:*
TEST(EvalInAccessCheckedContext) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
v8::Local obj_template =
v8::ObjectTemplate::New(isolate);
Great explaination! I just can not get this point before. The fact that
some tasks can usually be done by both c++ and js code makes me confuse
the c++ and js worlds.
在 2018年5月30日星期三 UTC+8下午6:51:34，Ben Noordhuis写道：
>
> On Wed, May 30, 2018 at 12:41 PM, >
> wrote:
> > thanks. But in
thanks. But in Modification Two, I changed object x 's property a in a
different context successfully. is this fulfilled "Access checks are
invoked when trying to access objects" condition?
在 2018年5月30日星期三 UTC+8下午5:32:55，Ben Noordhuis写道：
>
> On Wed, May 30, 2018 at 9:32 AM, >
> wrote:
> > I
I try to understand SetSecurityToken's function. So I
modified EvalInAccessCheckedContext test case in test-api.cc which is
included in v8 sourcecode. Follow is my modification.
Modification One:
TEST(EvalInAccessCheckedContext) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope
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