src/Tool_Abstract.cpp

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // LameXP - Audio Encoder Front-End
   3 // Copyright (C) 2004-2011 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This program is free software; you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation; either version 2 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License along
  16 // with this program; if not, write to the Free Software Foundation, Inc.,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 // http://www.gnu.org/licenses/gpl-2.0.txt
  20 ///////////////////////////////////////////////////////////////////////////////
  21
  22 #include "Tool_Abstract.h"
  23
  24 #include "Global.h"
  25
  26 #include <QProcess>
  27 #include <QMutex>
  28 #include <QMutexLocker>
  29 #include <QLibrary>
  30 #include <QProcessEnvironment>
  31 #include <QDir>
  32
  33 /*
  34  * Win32 API definitions
  35  */
  36 typedef HANDLE (WINAPI *CreateJobObjectFun)(__in_opt LPSECURITY_ATTRIBUTES lpJobAttributes, __in_opt LPCSTR lpName);
  37 typedef BOOL (WINAPI *SetInformationJobObjectFun)(__in HANDLE hJob, __in JOBOBJECTINFOCLASS JobObjectInformationClass, __in_bcount(cbJobObjectInformationLength) LPVOID lpJobObjectInformation, __in DWORD cbJobObjectInformationLength);
  38 typedef BOOL (WINAPI *AssignProcessToJobObjectFun)(__in HANDLE hJob, __in HANDLE hProcess);
  39
  40 /*
  41  * Static vars
  42  */
  43 QMutex *AbstractTool::m_mutex_startProcess = NULL;
  44 HANDLE AbstractTool::m_handle_jobObject = NULL;
  45
  46 /*
  47  * Constructor
  48  */
  49 AbstractTool::AbstractTool(void)
  50 {
  51         static CreateJobObjectFun CreateJobObjectPtr = NULL;
  52         static SetInformationJobObjectFun SetInformationJobObjectPtr = NULL;
  53
  54         if(!m_mutex_startProcess)
  55         {
  56                 m_mutex_startProcess = new QMutex();
  57         }
  58
  59         if(!m_handle_jobObject)
  60         {
  61                 if(!CreateJobObjectPtr || !SetInformationJobObjectPtr)
  62                 {
  63                         QLibrary Kernel32Lib("kernel32.dll");
  64                         CreateJobObjectPtr = (CreateJobObjectFun) Kernel32Lib.resolve("CreateJobObjectA");
  65                         SetInformationJobObjectPtr = (SetInformationJobObjectFun) Kernel32Lib.resolve("SetInformationJobObject");
  66                 }
  67                 if(CreateJobObjectPtr && SetInformationJobObjectPtr)
  68                 {
  69                         m_handle_jobObject = CreateJobObjectPtr(NULL, NULL);
  70                         if(m_handle_jobObject == INVALID_HANDLE_VALUE)
  71                         {
  72                                 m_handle_jobObject = NULL;
  73                         }
  74                         if(m_handle_jobObject)
  75                         {
  76                                 JOBOBJECT_EXTENDED_LIMIT_INFORMATION jobExtendedLimitInfo;
  77                                 memset(&jobExtendedLimitInfo, 0, sizeof(JOBOBJECT_EXTENDED_LIMIT_INFORMATION));
  78                                 jobExtendedLimitInfo.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE | JOB_OBJECT_LIMIT_DIE_ON_UNHANDLED_EXCEPTION;
  79                                 SetInformationJobObjectPtr(m_handle_jobObject, JobObjectExtendedLimitInformation, &jobExtendedLimitInfo, sizeof(JOBOBJECT_EXTENDED_LIMIT_INFORMATION));
  80                         }
  81                 }
  82         }
  83
  84         m_firstLaunch = true;
  85 }
  86
  87 /*
  88  * Destructor
  89  */
  90 AbstractTool::~AbstractTool(void)
  91 {
  92 }
  93
  94 /*
  95  * Initialize and launch process object
  96  */
  97 bool AbstractTool::startProcess(QProcess &process, const QString &program, const QStringList &args)
  98 {
  99         static AssignProcessToJobObjectFun AssignProcessToJobObjectPtr = NULL;
 100
 101         QMutexLocker lock(m_mutex_startProcess);
 102         emit messageLogged(commandline2string(program, args) + "\n");
 103
 104         QProcessEnvironment env = process.processEnvironment();
 105         if(env.isEmpty()) env = QProcessEnvironment::systemEnvironment();
 106         env.insert("TEMP", QDir::toNativeSeparators(lamexp_temp_folder2()));
 107         env.insert("TMP", QDir::toNativeSeparators(lamexp_temp_folder2()));
 108         process.setProcessEnvironment(env);
 109
 110         if(!AssignProcessToJobObjectPtr)
 111         {
 112                 QLibrary Kernel32Lib("kernel32.dll");
 113                 AssignProcessToJobObjectPtr = (AssignProcessToJobObjectFun) Kernel32Lib.resolve("AssignProcessToJobObject");
 114         }
 115
 116         process.setProcessChannelMode(QProcess::MergedChannels);
 117         process.setReadChannel(QProcess::StandardOutput);
 118         process.start(program, args);
 119
 120         if(process.waitForStarted())
 121         {
 122
 123                 if(AssignProcessToJobObjectPtr)
 124                 {
 125                         AssignProcessToJobObjectPtr(m_handle_jobObject, process.pid()->hProcess);
 126                 }
 127                 if(!SetPriorityClass(process.pid()->hProcess, BELOW_NORMAL_PRIORITY_CLASS))
 128                 {
 129                         SetPriorityClass(process.pid()->hProcess, IDLE_PRIORITY_CLASS);
 130                 }
 131
 132                 lock.unlock();
 133
 134                 if(m_firstLaunch)
 135                 {
 136                         emit statusUpdated(0);
 137                         m_firstLaunch = false;
 138                 }
 139
 140                 return true;
 141         }
 142
 143         emit messageLogged("Process creation has failed :-(");
 144         QString errorMsg= process.errorString().trimmed();
 145         if(!errorMsg.isEmpty()) emit messageLogged(errorMsg);
 146
 147         process.kill();
 148         process.waitForFinished(-1);
 149         return false;
 150 }
 151
 152 /*
 153  * Convert program arguments to single string
 154  */
 155 QString AbstractTool::commandline2string(const QString &program, const QStringList &arguments)
 156 {
 157         QString commandline = (program.contains(' ') ? QString("\"%1\"").arg(program) : program);
 158
 159         for(int i = 0; i < arguments.count(); i++)
 160         {
 161                 commandline += (arguments.at(i).contains(' ') ? QString(" \"%1\"").arg(arguments.at(i)) : QString(" %1").arg(arguments.at(i)));
 162         }
 163
 164         return commandline;
 165 }
 166
 167 /*
 168  * Convert long path to short path
 169  */
 170 QString AbstractTool::pathToShort(const QString &longPath)
 171 {
 172         QString shortPath;
 173         DWORD buffSize = GetShortPathNameW(reinterpret_cast<const wchar_t*>(longPath.utf16()), NULL, NULL);
 174
 175         if(buffSize > 0)
 176         {
 177                 wchar_t *buffer = new wchar_t[buffSize];
 178                 DWORD result = GetShortPathNameW(reinterpret_cast<const wchar_t*>(longPath.utf16()), buffer, buffSize);
 179
 180                 if(result > 0 && result < buffSize)
 181                 {
 182                         shortPath = QString::fromUtf16(reinterpret_cast<const unsigned short*>(buffer));
 183                 }
 184
 185                 delete[] buffer;
 186         }
 187
 188         return (shortPath.isEmpty() ? longPath : shortPath);
 189 }
 190