test: node hangs on mac OSX

[saquibkhan]

Hi,
I changed the test script (./test/simple/test-child-process-fork-getconnections.js) a little and ran the script in loop (around 50 times). At one point node hanged. (tested on v0.10)

In the old script (./test/simple/test-child-process-fork-getconnections.js) I changed sockets[m.id].destroy(); to sockets[m.id].end();

I saw this issue while fixing for Issue #16805

Test Script

Please find the backtrace below:

thread backtrace all
* thread #1: tid = 0x1baaec, 0x00007fff81a7021a libsystem_kernel.dylib`kevent + 10, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00007fff81a7021a libsystem_kernel.dylib`kevent + 10
    frame #1: 0x000000010038afaf node`uv__io_poll + 629
    frame #2: 0x000000010037ed91 node`uv_run + 239
    frame #3: 0x0000000100339676 node`node::Start(int, char**) + 365
    frame #4: 0x0000000100002bb4 node`start + 52

  thread #2: tid = 0x1baaed, 0x00007fff81a6a4de libsystem_kernel.dylib`mach_msg_trap + 10
    frame #0: 0x00007fff81a6a4de libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff81a6964f libsystem_kernel.dylib`mach_msg + 55
    frame #2: 0x00007fff84653b34 CoreFoundation`__CFRunLoopServiceMachPort + 212
    frame #3: 0x00007fff84652ffb CoreFoundation`__CFRunLoopRun + 1371
    frame #4: 0x00007fff84652858 CoreFoundation`CFRunLoopRunSpecific + 296
    frame #5: 0x00007fff84708ef1 CoreFoundation`CFRunLoopRun + 97
    frame #6: 0x0000000100389e13 node`uv__cf_loop_runner + 67
    frame #7: 0x000000010037e452 node`uv__thread_start + 25
    frame #8: 0x00007fff8718b268 libsystem_pthread.dylib`_pthread_body + 131
    frame #9: 0x00007fff8718b1e5 libsystem_pthread.dylib`_pthread_start + 176
    frame #10: 0x00007fff8718941d libsystem_pthread.dylib`thread_start + 13

  thread #3: tid = 0x1baaee, 0x00007fff81a70232 libsystem_kernel.dylib`kevent64 + 10, queue = 'com.apple.libdispatch-manager'
    frame #0: 0x00007fff81a70232 libsystem_kernel.dylib`kevent64 + 10
    frame #1: 0x00007fff817afd91 libdispatch.dylib`_dispatch_mgr_invoke + 247
    frame #2: 0x00007fff817afa6a libdispatch.dylib`_dispatch_mgr_thread + 52

  thread #4: tid = 0x1baaef, 0x00007fff81a6a51a libsystem_kernel.dylib`semaphore_wait_trap + 10, name = 'SamplerThread'
    frame #0: 0x00007fff81a6a51a libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x000000010032f989 node`v8::internal::MacOSSemaphore::Wait() + 17
    frame #2: 0x000000010026b0c4 node`v8::internal::RuntimeProfiler::WaitForSomeIsolateToEnterJS() + 84
    frame #3: 0x000000010026b1e2 node`v8::internal::RuntimeProfilerRateLimiter::SuspendIfNecessary() + 22
    frame #4: 0x000000010032fa42 node`v8::internal::SamplerThread::Run() + 78
    frame #5: 0x000000010032f41e node`v8::internal::ThreadEntry(void*) + 60
    frame #6: 0x00007fff8718b268 libsystem_pthread.dylib`_pthread_body + 131
    frame #7: 0x00007fff8718b1e5 libsystem_pthread.dylib`_pthread_start + 176
    frame #8: 0x00007fff8718941d libsystem_pthread.dylib`thread_start + 13
(lldb)