[base] Increase worker_pool thread stacksize to 1MB on MacOSX.

base/threading/worker_pool_posix.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "base/threading/worker_pool_posix.h"
 
 #include <stddef.h>
 
 #include "base/bind.h"
 #include "base/callback.h"
@@ skipping 12 matching lines @@
 
 namespace base {
 
 namespace {
 
 base::LazyInstance<ThreadLocalBoolean>::Leaky
     g_worker_pool_running_on_this_thread = LAZY_INSTANCE_INITIALIZER;
 
 const int kIdleSecondsBeforeExit = 10 * 60;
 
+#if defined(OS_MACOSX)
+// On Mac OS X a background thread's default stack size is 512Kb. We need at
+// least 1MB for compilation tasks in V8, so increase this default.
+const int kStackSize = 1 * 1024 * 1024;
+#else
+const int kStackSize = 0;
+#endif
+
 class WorkerPoolImpl {
  public:
   WorkerPoolImpl();
 
   // WorkerPoolImpl is only instantiated as a leaky LazyInstance, so the
   // destructor is never called.
   ~WorkerPoolImpl() = delete;
 
   void PostTask(const tracked_objects::Location& from_here,
                 const base::Closure& task,
@@ skipping 96 matching lines @@
 
   pending_tasks_.push(std::move(*pending_task));
 
   // We have enough worker threads.
   if (static_cast<size_t>(num_idle_threads_) >= pending_tasks_.size()) {
     pending_tasks_available_cv_.Signal();
   } else {
     // The new PlatformThread will take ownership of the WorkerThread object,
     // which will delete itself on exit.
     WorkerThread* worker = new WorkerThread(name_prefix_, this);
-    PlatformThread::CreateNonJoinable(0, worker);
+    PlatformThread::CreateNonJoinable(kStackSize, worker);
   }
 }
 
 PendingTask PosixDynamicThreadPool::WaitForTask() {
   AutoLock locked(lock_);
 
   if (pending_tasks_.empty()) {  // No work available, wait for work.
     num_idle_threads_++;
     if (num_idle_threads_cv_.get())
       num_idle_threads_cv_->Signal();
     pending_tasks_available_cv_.TimedWait(
         TimeDelta::FromSeconds(idle_seconds_before_exit_));
     num_idle_threads_--;
     if (num_idle_threads_cv_.get())
       num_idle_threads_cv_->Signal();
     if (pending_tasks_.empty()) {
       // We waited for work, but there's still no work.  Return NULL to signal
       // the thread to terminate.
       return PendingTask(FROM_HERE, base::Closure());
     }
   }
 
   PendingTask pending_task = std::move(pending_tasks_.front());
   pending_tasks_.pop();
   return pending_task;
 }
 
 }  // namespace base