Files
clang-p2996/lldb/source/Host/common/MainLoopBase.cpp
Pavel Labath 6a8bbd26ab [lldb] Enable the insertion of "pending callbacks" to MainLoops from other threads
This will be used as a replacement for selecting over a pipe fd, which
does not work on windows. The posix implementation still uses a pipe
under the hood, while the windows version uses windows event handles.

The idea is that, instead of writing to a pipe, one just inserts a
callback, which does whatever you wanted to do after the bytes come out
the read end of the pipe.

Differential Revision: https://reviews.llvm.org/D131160
2022-09-06 10:56:10 +02:00

34 lines
1.0 KiB
C++

//===-- MainLoopBase.cpp --------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "lldb/Host/MainLoopBase.h"
using namespace lldb;
using namespace lldb_private;
void MainLoopBase::AddPendingCallback(const Callback &callback) {
{
std::lock_guard<std::mutex> lock{m_callback_mutex};
m_pending_callbacks.push_back(callback);
}
TriggerPendingCallbacks();
}
void MainLoopBase::ProcessPendingCallbacks() {
// Move the callbacks to a local vector to avoid keeping m_pending_callbacks
// locked throughout the calls.
std::vector<Callback> pending_callbacks;
{
std::lock_guard<std::mutex> lock{m_callback_mutex};
pending_callbacks = std::move(m_pending_callbacks);
}
for (const Callback &callback : pending_callbacks)
callback(*this);
}