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LibThread: Introduce a new threading library

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This library is meant to provide C++-style wrappers over lower
level APIs such as syscalls and pthread_* functions, as well as
utilities for easily running pieces of logic on different
threads.
This commit is contained in:
Sergey Bugaev 2019-08-25 18:55:56 +03:00 • committed by Andreas Kling
parent d5f3487203
commit e1a6f8a27d
9 changed files with 211 additions and 3 deletions
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48
Libraries/LibThread/BackgroundAction.cpp Normal file
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#include <LibThread/BackgroundAction.h>
#include <LibThread/Thread.h>
#include <LibCore/CLock.h>
#include <AK/Queue.h>
static CLockable<Queue<Function<void()>>>* s_all_actions;
static LibThread::Thread* s_background_thread;
static int background_thread_func()
{
while (true) {
Function<void()> work_item;
{
LOCKER(s_all_actions->lock());
if (!s_all_actions->resource().is_empty())
work_item = s_all_actions->resource().dequeue();
}
if (work_item)
work_item();
else
sleep(1);
}
ASSERT_NOT_REACHED();
}
static void init()
{
s_all_actions = new CLockable<Queue<Function<void()>>>();
s_background_thread = new LibThread::Thread(background_thread_func);
s_background_thread->set_name("Background thread");
s_background_thread->start();
}
CLockable<Queue<Function<void()>>>& LibThread::BackgroundActionBase::all_actions()
{
if (s_all_actions == nullptr)
init();
return *s_all_actions;
}
LibThread::Thread& LibThread::BackgroundActionBase::background_thread()
{
if (s_background_thread == nullptr)
init();
return *s_background_thread;
}