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refactor: introduce
WakeupPipe, move wakeup select pipe logic there
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,79 @@ | ||
| // Copyright (c) 2020-2024 The Dash Core developers | ||
| // Distributed under the MIT software license, see the accompanying | ||
| // file COPYING or http://www.opensource.org/licenses/mit-license.php. | ||
|
|
||
| #include <util/wpipe.h> | ||
|
|
||
| #include <logging.h> | ||
| #include <util/edge.h> | ||
|
|
||
| WakeupPipe::WakeupPipe(EdgeTriggeredEvents* edge_trig_events) | ||
| : m_edge_trig_events{edge_trig_events} | ||
| { | ||
| #ifdef USE_WAKEUP_PIPE | ||
| if (pipe(m_pipe.data()) != 0) { | ||
| LogPrintf("Unable to initialize WakeupPipe, pipe() for m_pipe failed\n"); | ||
| return; | ||
| } | ||
| for (size_t idx = 0; idx < m_pipe.size(); idx++) { | ||
| int flags = fcntl(m_pipe[idx], F_GETFL, 0); | ||
| if (fcntl(m_pipe[idx], F_SETFL, flags | O_NONBLOCK) == -1) { | ||
| LogPrintf("Unable to initialize WakeupPipe, fcntl for O_NONBLOCK on m_pipe[%d] failed\n", idx); | ||
| return; | ||
| } | ||
| } | ||
| if (edge_trig_events && !edge_trig_events->RegisterPipe(m_pipe[0])) { | ||
| LogPrintf("Unable to initialize WakeupPipe, EdgeTriggeredEvents::RegisterPipe() failed\n"); | ||
| return; | ||
| } | ||
| m_valid = true; | ||
| #else | ||
| LogPrintf("Attempting to initialize WakeupPipe without support compiled in!\n"); | ||
| #endif /* USE_WAKEUP_PIPE */ | ||
| } | ||
|
|
||
| WakeupPipe::~WakeupPipe() | ||
| { | ||
| if (m_valid) { | ||
| #ifdef USE_WAKEUP_PIPE | ||
| if (m_edge_trig_events && !m_edge_trig_events->UnregisterPipe(m_pipe[0])) { | ||
| LogPrintf("Destroying WakeupPipe instance, EdgeTriggeredEvents::UnregisterPipe() failed\n"); | ||
| } | ||
| close(m_pipe[0]); | ||
| close(m_pipe[1]); | ||
| #else | ||
| assert(false); | ||
| #endif /* USE_WAKEUP_PIPE */ | ||
| } | ||
| } | ||
|
|
||
| void WakeupPipe::Drain() const | ||
| { | ||
| #ifdef USE_WAKEUP_PIPE | ||
| assert(m_valid && m_pipe[0] != -1); | ||
|
|
||
| int ret{0}; | ||
| std::array<uint8_t, 128> buf; | ||
| do { | ||
| ret = read(m_pipe[0], buf.data(), buf.size()); | ||
| } while (ret > 0); | ||
| #else | ||
| assert(false); | ||
| #endif /* USE_WAKEUP_PIPE */ | ||
| } | ||
|
|
||
| void WakeupPipe::Write() | ||
| { | ||
| #ifdef USE_WAKEUP_PIPE | ||
| assert(m_valid && m_pipe[1] != -1); | ||
|
|
||
| std::array<uint8_t, 1> buf; | ||
| if (write(m_pipe[1], buf.data(), buf.size()) != 1) { | ||
| LogPrintf("Write to m_pipe[1] failed\n"); | ||
| } | ||
|
|
||
| m_need_wakeup = false; | ||
| #else | ||
| assert(false); | ||
| #endif /* USE_WAKEUP_PIPE */ | ||
| } |
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