Bug 137813

Summary:

JSC::BlockAllocator::blockFreeingThreadMain() , too many thread be hang up.

Product:

WebKit

Reporter:

YauzZ <yauzz.scu>

Component:

JavaScriptCore

Assignee:

Nobody <webkit-unassigned>

Status:

NEW ---

Severity:

Normal

CC:

fpizlo, ggaren

Priority:

Version:

523.x (Safari 3)

Hardware:

iPhone / iPad

OS:

iOS 7.0

Attachments:

Description	Flags
crashlytics log	none

Description YauzZ 2014-10-17 02:15:41 PDT

Created attachment 240007 [details]
crashlytics log

hi,

my app have a crash in crashlytics.com. the reason is the -[ASIHTTPRequest runPACScript:] , but too many JSC thread be hang up before the crash. finally as the memory too low , the system abort.

i search bug in webkit.org, example :
    https://bugs.webkit.org/show_bug.cgi?id=98084
    https://bugs.webkit.org/show_bug.cgi?id=90622

it refer to the free block in gc , especially follow code is not perfect. 

void BlockAllocator::blockFreeingThreadMain()
{
    while (!m_blockFreeingThreadShouldQuit) {
        // Generally wait for one second before scavenging free blocks. This
        // may return early, particularly when we're being asked to quit.
        waitForRelativeTime(1.0);
        if (m_blockFreeingThreadShouldQuit)
            break;


so can you verify this question is the bug in jsc? and how to fix it ?