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// Copyright (c) 2006-2008 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 "sandbox/src/win2k_threadpool.h"
#include "sandbox/src/win_utils.h"
namespace sandbox {
bool Win2kThreadPool::RegisterWait(const void* client, HANDLE waitable_object,
CrossCallIPCCallback callback,
void* context) {
if (0 == client) {
return false;
}
HANDLE pool_object = NULL;
// create a wait for a kernel object, with no timeout
if (!::RegisterWaitForSingleObject(&pool_object, waitable_object, callback,
context, INFINITE, WT_EXECUTEDEFAULT)) {
return false;
}
PoolObject pool_obj = {client, pool_object};
AutoLock lock(&lock_);
pool_objects_.push_back(pool_obj);
return true;
}
bool Win2kThreadPool::UnRegisterWaits(void* cookie) {
if (0 == cookie) {
return false;
}
AutoLock lock(&lock_);
PoolObjects::iterator it;
for (it = pool_objects_.begin(); it != pool_objects_.end(); ++it) {
if (it->cookie == cookie) {
if (!::UnregisterWaitEx(it->wait, INVALID_HANDLE_VALUE))
return false;
it->cookie = 0;
}
}
return true;
}
size_t Win2kThreadPool::OutstandingWaits() {
size_t count =0;
AutoLock lock(&lock_);
PoolObjects::iterator it;
for (it = pool_objects_.begin(); it != pool_objects_.end(); ++it) {
if (it->cookie != 0) {
++count;
}
}
return count;
}
Win2kThreadPool::~Win2kThreadPool() {
// Here we used to unregister all the pool wait handles. Now, following the
// rest of the code we avoid lengthy or blocking calls given that the process
// is being torn down.
::DeleteCriticalSection(&lock_);
}
} // namespace sandbox
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