Initial import

src/plugins/debugger/procinterrupt.cpp

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+/***************************************************************************
+**
+** This file is part of Qt Creator
+**
+** Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).
+**
+** Contact:  Qt Software Information (qt-info@nokia.com)
+**
+** 
+** Non-Open Source Usage  
+** 
+** Licensees may use this file in accordance with the Qt Beta Version
+** License Agreement, Agreement version 2.2 provided with the Software or,
+** alternatively, in accordance with the terms contained in a written
+** agreement between you and Nokia.  
+** 
+** GNU General Public License Usage 
+** 
+** Alternatively, this file may be used under the terms of the GNU General
+** Public License versions 2.0 or 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the packaging
+** of this file.  Please review the following information to ensure GNU
+** General Public Licensing requirements will be met:
+**
+** http://www.fsf.org/licensing/licenses/info/GPLv2.html and
+** http://www.gnu.org/copyleft/gpl.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights. These rights are described in the Nokia Qt GPL Exception version
+** 1.2, included in the file GPL_EXCEPTION.txt in this package.  
+** 
+***************************************************************************/
+#include "procinterrupt.h"
+
+#ifdef Q_OS_WIN
+#include <windows.h>
+#include <Tlhelp32.h>
+
+using namespace Debugger::Internal;
+
+typedef HANDLE (WINAPI *PtrCreateRemoteThread)(
+    HANDLE hProcess,
+    LPSECURITY_ATTRIBUTES lpThreadAttributes,
+    SIZE_T dwStackSize,
+    LPTHREAD_START_ROUTINE lpStartAddress,
+    LPVOID lpParameter,
+    DWORD dwCreationFlags,
+    LPDWORD lpThreadId);
+
+PtrCreateRemoteThread resolveCreateRemoteThread()
+{
+    HINSTANCE hLib = LoadLibraryA("Kernel32");
+    return (PtrCreateRemoteThread)GetProcAddress(hLib, "CreateRemoteThread");
+}
+
+DWORD findProcessId(DWORD parentId)
+{
+    HANDLE hProcList = CreateToolhelp32Snapshot(TH32CS_SNAPPROCESS, 0);
+
+    PROCESSENTRY32 procEntry;
+    procEntry.dwSize = sizeof(PROCESSENTRY32);
+
+    DWORD procId = 0;
+
+    BOOL moreProc = Process32First(hProcList, &procEntry);
+    while (moreProc) {
+        if (procEntry.th32ParentProcessID == parentId) {
+            procId = procEntry.th32ProcessID;
+            break;
+        }
+        moreProc = Process32Next(hProcList, &procEntry);
+    }
+
+    CloseHandle(hProcList);
+    return procId;
+}
+#else
+
+#include <QtCore/QLatin1String>
+#include <QtCore/QString>
+#include <QtCore/QDir>
+#include <QtCore/QFileInfoList>
+#include <QtCore/QByteArray>
+#include <QtCore/QDebug>
+
+#include <sys/types.h>
+#include <signal.h>
+
+#include <sys/sysctl.h>
+
+#define OPProcessValueUnknown UINT_MAX
+
+/* Mac OS X
+int OPParentIDForProcessID(int pid)
+    // Returns the parent process id for the given process id (pid)
+{
+    struct kinfo_proc info;
+    size_t length = sizeof(struct kinfo_proc);
+    int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, pid };
+    if (sysctl(mib, 4, &info, &length, NULL, 0) < 0)
+        return OPProcessValueUnknown;
+    if (length == 0)
+        return OPProcessValueUnknown;
+    return info.kp_eproc.e_ppid;
+}
+*/
+
+int findParentProcess(int procId)
+{
+    QFile statFile(QLatin1String("/proc/") + QString::number(procId) + 
+                   QLatin1String("/stat"));
+    if (!statFile.open(QIODevice::ReadOnly))
+        return -1;
+    
+    QByteArray line = statFile.readLine();
+    line = line.mid(line.indexOf(')') + 4);
+    //qDebug() << "1: " << line;
+    line = line.left(line.indexOf(' '));
+    //qDebug() << "2: " << line;
+    
+    return QString(line).toInt();
+}
+
+int findChildProcess(int parentId)
+{
+    QDir proc(QLatin1String("/proc"));
+    QFileInfoList procList = proc.entryInfoList(QDir::Dirs);
+    foreach (const QFileInfo &info, procList) {
+        int procId = 0;
+        bool ok = false;
+        procId = info.baseName().toInt(&ok);
+        if (!ok || !procId)
+            continue;
+        
+        if (findParentProcess(procId) == parentId)
+            return procId;
+    }
+    
+    return -1;
+}
+
+#endif
+
+bool Debugger::Internal::interruptProcess(int pID)
+{
+#ifdef Q_OS_WIN
+    DWORD pid = pID;
+    if (!pid)
+        return false;
+
+    PtrCreateRemoteThread libFunc = resolveCreateRemoteThread();
+    if (libFunc) {
+        DWORD dwThreadId = 0;
+        HANDLE hproc = OpenProcess(PROCESS_ALL_ACCESS, false, pid);
+        HANDLE hthread = libFunc(hproc, NULL, 0, (LPTHREAD_START_ROUTINE)DebugBreak, 0, 0, &dwThreadId);
+        CloseHandle(hthread);
+        if (dwThreadId)
+            return true;
+    }
+#else
+    int procId = pID;
+    if (procId != -1) {
+        if (kill(procId, 2) == 0)
+            return true;
+    }
+
+#endif
+    
+    return false;
+}
+
+bool Debugger::Internal::interruptChildProcess(Q_PID parentPID)
+{
+#ifdef WIN32
+    DWORD pid = findProcessId(parentPID->dwProcessId);
+    return interruptProcess(pid);
+#else
+    int procId = findChildProcess(parentPID);
+    //qDebug() << "INTERRUPTING PROCESS" << procId;
+    return interruptProcess(procId);
+#endif
+}