e0a94e9625
This way it'll avoid incorrect lock-up detection also if the debugger is attached later when LO is already running. Change-Id: I9b762ee439a62631036ad2f09f4396cca0b5ba6b Reviewed-on: https://gerrit.libreoffice.org/c/core/+/88609 Tested-by: Jenkins Reviewed-by: Luboš Luňák <l.lunak@collabora.com>
165 lines
4.3 KiB
C++
165 lines
4.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <watchdog.hxx>
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#include <config_features.h>
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#include <osl/conditn.hxx>
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#include <rtl/ref.hxx>
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#include <rtl/string.hxx>
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#include <sal/log.hxx>
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#include <comphelper/debuggerinfo.hxx>
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#include <opengl/zone.hxx>
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#include <skia/zone.hxx>
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#include <stdlib.h>
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#if defined HAVE_VALGRIND_HEADERS
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#include <valgrind/memcheck.h>
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#endif
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namespace
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{
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static volatile bool gbWatchdogFiring = false;
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static osl::Condition* gpWatchdogExit = nullptr;
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static rtl::Reference<WatchdogThread> gxWatchdog;
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template <typename Zone> struct WatchdogHelper
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{
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static inline sal_uInt64 nLastEnters = 0;
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static inline int nUnchanged = 0; // how many unchanged nEnters
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static inline bool bFired = false;
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static inline bool bAbortFired = false;
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static void setLastEnters() { nLastEnters = Zone::enterCount(); }
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static void check()
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{
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if (Zone::isInZone())
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{
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const CrashWatchdogTimingsValues& aTimingValues = Zone::getCrashWatchdogTimingsValues();
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if (nLastEnters == Zone::enterCount())
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nUnchanged++;
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else
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nUnchanged = 0;
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Zone::checkDebug(nUnchanged, aTimingValues);
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// Not making progress
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if (nUnchanged >= aTimingValues.mnDisableEntries)
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{
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if (!bFired)
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{
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gbWatchdogFiring = true;
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SAL_WARN("vcl.watchdog",
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OStringLiteral("Watchdog triggered: hard disable ") + Zone::name());
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Zone::hardDisable();
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gbWatchdogFiring = false;
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}
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bFired = true;
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// we can hang using VCL in the abort handling -> be impatient
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if (bAbortFired)
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{
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SAL_WARN("vcl.watchdog",
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OStringLiteral("Watchdog gave up: hard exiting ") + Zone::name());
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_Exit(1);
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}
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}
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// Not making even more progress
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if (nUnchanged >= aTimingValues.mnAbortAfter)
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{
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if (!bAbortFired)
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{
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SAL_WARN("vcl.watchdog",
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OStringLiteral("Watchdog gave up: aborting ") + Zone::name());
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gbWatchdogFiring = true;
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std::abort();
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}
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// coverity[dead_error_line] - we might have caught SIGABRT and failed to exit yet
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bAbortFired = true;
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}
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}
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else
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{
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nUnchanged = 0;
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}
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}
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};
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} // namespace
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WatchdogThread::WatchdogThread()
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: salhelper::Thread("Crash Watchdog")
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{
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}
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void WatchdogThread::execute()
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{
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TimeValue aQuarterSecond(0, 1000 * 1000 * 1000 * 0.25);
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do
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{
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#if HAVE_FEATURE_OPENGL
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WatchdogHelper<OpenGLZone>::setLastEnters();
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#endif
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#if HAVE_FEATURE_SKIA
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WatchdogHelper<SkiaZone>::setLastEnters();
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#endif
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gpWatchdogExit->wait(&aQuarterSecond);
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#if defined HAVE_VALGRIND_HEADERS
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if (RUNNING_ON_VALGRIND)
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continue;
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#endif
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#if defined DBG_UTIL
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if (comphelper::isDebuggerAttached())
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continue;
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#endif
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#if HAVE_FEATURE_OPENGL
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WatchdogHelper<OpenGLZone>::check();
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#endif
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#if HAVE_FEATURE_SKIA
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WatchdogHelper<SkiaZone>::check();
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#endif
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} while (!gpWatchdogExit->check());
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}
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void WatchdogThread::start()
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{
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if (gxWatchdog != nullptr)
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return; // already running
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if (getenv("SAL_DISABLE_WATCHDOG"))
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return;
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gpWatchdogExit = new osl::Condition();
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gxWatchdog.set(new WatchdogThread());
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gxWatchdog->launch();
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}
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void WatchdogThread::stop()
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{
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if (gbWatchdogFiring)
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return; // in watchdog thread
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if (gpWatchdogExit)
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gpWatchdogExit->set();
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if (gxWatchdog.is())
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{
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gxWatchdog->join();
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gxWatchdog.clear();
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}
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delete gpWatchdogExit;
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gpWatchdogExit = nullptr;
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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