[d8 worker] Fix regression when serializing very large arraybuffer

[d8 worker] Fix regression when serializing very large arraybuffer

BUG=chromium:514081
R=jarin@chromium.org
LOG=n

Committed: https://crrev.com/df1f72bbf1cafb3338cce88b88013b377531eb82
Cr-Commit-Position: refs/heads/master@{#29982}

[Jarin, 2015-08-03 05:04:10]

lgtm

[binji, 2015-08-03 16:34:29]

The CQ bit was checked by binji@chromium.org

[commit-bot: I haz the power, 2015-08-03 16:34:36]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1264723002/30001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1264723002/30001

[commit-bot: I haz the power, 2015-08-03 16:38:04]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-08-03 16:38:05]

Try jobs failed on following builders:
  v8_presubmit on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_presubmit/builds/4652)

[binji, 2015-08-03 16:40:37]

The CQ bit was checked by binji@chromium.org

[binji, 2015-08-03 16:40:37]

The patchset sent to the CQ was uploaded after l-g-t-m from jarin@chromium.org
Link to the patchset: https://codereview.chromium.org/1264723002/#ps50001
(title: "merge master")

[commit-bot: I haz the power, 2015-08-03 16:40:59]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1264723002/50001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1264723002/50001

[commit-bot: I haz the power, 2015-08-03 17:07:53]

Committed patchset #4 (id:50001)

[commit-bot: I haz the power, 2015-08-03 17:08:09]

Patchset 4 (id:??) landed as
https://crrev.com/df1f72bbf1cafb3338cce88b88013b377531eb82
Cr-Commit-Position: refs/heads/master@{#29982}

[saper, 2015-08-08 23:33:04]

On 2015/08/03 17:08:09, commit-bot: I haz the power wrote:
> Patchset 4 (id:??) landed as
> https://crrev.com/df1f72bbf1cafb3338cce88b88013b377531eb82
> Cr-Commit-Position: refs/heads/master@{#29982}

The test crashes on FreeBSD/x64 as of
https://crrev.com/73ae23b5dc9bd816474688e74b9b768a09b9711f

#0  memset () at /usr/src/lib/libc/amd64/string/memset.S:51
#1  0x00000000004253b1 in v8::(anonymous
namespace)::ShellArrayBufferAllocator::Allocate (
    this=0x7fffffffe4a8, length=2147483648) at ../src/d8.cc:84
#2  0x0000000000939fdd in v8::internal::Runtime::SetupArrayBufferAllocatingData
(isolate=0x805453000, 
    array_buffer=..., allocated_length=2147483648, initialize=true, 
    shared=v8::internal::SharedFlag::kNotShared) at
../src/runtime/runtime-typedarray.cc:54
#3  0x000000000093a3c7 in v8::internal::__RT_impl_Runtime_ArrayBufferInitialize
(args=..., 
    isolate=0x805453000) at ../src/runtime/runtime-typedarray.cc:90
#4  0x000000000093a112 in v8::internal::Runtime_ArrayBufferInitialize
(args_length=3, 
    args_object=0x7fffffffda98, isolate=0x805453000) at
../src/runtime/runtime-typedarray.cc:75

[saper, 2015-08-09 00:22:03]

On 2015/08/08 23:33:04, saper wrote:
> On 2015/08/03 17:08:09, commit-bot: I haz the power wrote:
> > Patchset 4 (id:??) landed as
> > https://crrev.com/df1f72bbf1cafb3338cce88b88013b377531eb82
> > Cr-Commit-Position: refs/heads/master@{#29982}
> 
> The test crashes on FreeBSD/x64 as of
> https://crrev.com/73ae23b5dc9bd816474688e74b9b768a09b9711f
> 
> #0  memset () at /usr/src/lib/libc/amd64/string/memset.S:51
> #1  0x00000000004253b1 in v8::(anonymous
> namespace)::ShellArrayBufferAllocator::Allocate (
>     this=0x7fffffffe4a8, length=2147483648) at ../src/d8.cc:84

This crash is a SIGKILL because the machine ran out of virtual memory (no swap
space). Please disregard, sorry for noise!