| 1 | /** @file
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| 2 | *
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| 3 | * VirtualBox additions client application: thread class.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2006-2007 innotek GmbH
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | */
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| 17 |
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| 18 | #include <iostream> /* For std::exception */
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| 19 |
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| 20 | #include "thread.h"
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| 21 |
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| 22 | /** Stop the thread using its stop method and get the exit value. */
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| 23 | int VBoxGuestThread::stop(unsigned cMillies, int *prc)
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| 24 | {
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| 25 | int rc = VINF_SUCCESS;
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| 26 |
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| 27 | if (NIL_RTTHREAD == mSelf) /* Assertion */
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| 28 | {
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| 29 | LogRelThisFunc(("Attempted to stop thread %s which is not running!\n", mName));
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| 30 | return VERR_INTERNAL_ERROR;
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| 31 | }
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| 32 | mExit = true;
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| 33 | mFunction->stop();
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| 34 | if (0 != (mFlags & RTTHREADFLAGS_WAITABLE))
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| 35 | {
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| 36 | rc = RTThreadWait(mSelf, cMillies, prc);
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| 37 | if (RT_SUCCESS(rc))
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| 38 | {
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| 39 | mSelf = NIL_RTTHREAD;
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| 40 | }
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| 41 | else
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| 42 | {
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| 43 | LogRelThisFunc(("Failed to stop thread %s!\n", mName));
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| 44 | }
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| 45 | }
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| 46 | return rc;
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| 47 | }
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| 48 |
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| 49 | /** Destroy the class, stopping the thread if necessary. */
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| 50 | VBoxGuestThread::~VBoxGuestThread(void)
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| 51 | {
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| 52 | if (NIL_RTTHREAD != mSelf)
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| 53 | {
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| 54 | LogRelThisFunc(("Warning! Stopping thread %s, as it is still running!\n", mName));
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| 55 | try
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| 56 | {
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| 57 | stop(2000, 0);
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| 58 | }
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| 59 | catch(...) {}
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| 60 | }
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| 61 | }
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| 62 |
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| 63 | /** Start the thread. */
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| 64 | int VBoxGuestThread::start(void)
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| 65 | {
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| 66 | if (NIL_RTTHREAD != mSelf) /* Assertion */
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| 67 | {
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| 68 | LogRelThisFunc(("Attempted to start thead %s twice!\n", mName));
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| 69 | return VERR_INTERNAL_ERROR;
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| 70 | }
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| 71 | mExit = false;
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| 72 | return RTThreadCreate(&mSelf, threadFunction, reinterpret_cast<void *>(this),
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| 73 | mStack, mType, mFlags, mName);
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| 74 | }
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| 75 |
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| 76 | /** Yield the CPU */
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| 77 | bool VBoxGuestThread::yield(void)
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| 78 | {
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| 79 | return RTThreadYield();
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| 80 | }
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| 81 |
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| 82 | /** The "real" thread function for the VBox runtime. */
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| 83 | int VBoxGuestThread::threadFunction(RTTHREAD self, void *pvUser)
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| 84 | {
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| 85 | int rc = VINF_SUCCESS;
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| 86 | PSELF pSelf = reinterpret_cast<PSELF>(pvUser);
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| 87 | pSelf->mRunning = true;
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| 88 | try
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| 89 | {
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| 90 | rc = pSelf->mFunction->threadFunction(pSelf);
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| 91 | }
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| 92 | catch (const std::exception &e)
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| 93 | {
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| 94 | LogRelFunc(("Caught exception in thread: %s\n", e.what()));
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| 95 | rc = VERR_UNRESOLVED_ERROR;
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| 96 | }
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| 97 | catch (...)
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| 98 | {
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| 99 | LogRelFunc(("Caught unknown exception in thread.\n"));
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| 100 | rc = VERR_UNRESOLVED_ERROR;
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| 101 | }
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| 102 | pSelf->mRunning = false;
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| 103 | return rc;
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| 104 | }
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