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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2012-04-08 16:13:09 -0500
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2012-04-08 16:13:09 -0500
commit81dacc29a4cd8094350939191b7f35037c4439ee (patch)
tree0eae84897d49e616fc2d755e3ef83a31ca4eed22 /tdecore/ksimpledirwatch.cpp
parent8f76b98ccc30b7d0b574ce50ba602de4f2126cb6 (diff)
downloadtdelibs-81dacc29a4cd8094350939191b7f35037c4439ee.tar.gz
tdelibs-81dacc29a4cd8094350939191b7f35037c4439ee.zip
Add detailed CPU information gathering to the TDE hardware library
Diffstat (limited to 'tdecore/ksimpledirwatch.cpp')
-rw-r--r--tdecore/ksimpledirwatch.cpp1755
1 files changed, 1755 insertions, 0 deletions
diff --git a/tdecore/ksimpledirwatch.cpp b/tdecore/ksimpledirwatch.cpp
new file mode 100644
index 000000000..cad0345ab
--- /dev/null
+++ b/tdecore/ksimpledirwatch.cpp
@@ -0,0 +1,1755 @@
+// -*- c-basic-offset: 2 -*-
+/* This file is part of the KDE libraries
+ Copyright (C) 1998 Sven Radej <sven@lisa.exp.univie.ac.at>
+
+ This library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public
+ License version 2 as published by the Free Software Foundation.
+
+ This library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public License
+ along with this library; see the file COPYING.LIB. If not, write to
+ the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA.
+*/
+
+
+// KSimpleDirWatch is a basic copy of KDirWatch
+// but with the KIO linking requirement removed
+
+#include <config.h>
+#include <errno.h>
+
+#ifdef HAVE_DNOTIFY
+#include <unistd.h>
+#include <time.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <errno.h>
+#endif
+
+
+#include <sys/stat.h>
+#include <assert.h>
+#include <tqdir.h>
+#include <tqfile.h>
+#include <tqintdict.h>
+#include <tqptrlist.h>
+#include <tqsocketnotifier.h>
+#include <tqstringlist.h>
+#include <tqtimer.h>
+
+#include <kapplication.h>
+#include <kdebug.h>
+#include <kconfig.h>
+#include <kglobal.h>
+#include <kstaticdeleter.h>
+#include <kde_file.h>
+
+// debug
+#include <sys/ioctl.h>
+
+#ifdef HAVE_INOTIFY
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/syscall.h>
+#include <linux/types.h>
+// Linux kernel headers are documented to not compile
+#define _S390_BITOPS_H
+#include <sys/inotify.h>
+
+#ifndef __NR_inotify_init
+#if defined(__i386__)
+#define __NR_inotify_init 291
+#define __NR_inotify_add_watch 292
+#define __NR_inotify_rm_watch 293
+#endif
+#if defined(__PPC__)
+#define __NR_inotify_init 275
+#define __NR_inotify_add_watch 276
+#define __NR_inotify_rm_watch 277
+#endif
+#if defined(__x86_64__)
+#define __NR_inotify_init 253
+#define __NR_inotify_add_watch 254
+#define __NR_inotify_rm_watch 255
+#endif
+#endif
+
+#ifndef IN_ONLYDIR
+#define IN_ONLYDIR 0x01000000
+#endif
+
+#ifndef IN_DONT_FOLLOW
+#define IN_DONT_FOLLOW 0x02000000
+#endif
+
+#ifndef IN_MOVE_SELF
+#define IN_MOVE_SELF 0x00000800
+#endif
+
+#endif
+
+#include <sys/utsname.h>
+
+#include "ksimpledirwatch.h"
+#include "ksimpledirwatch_p.h"
+
+#define NO_NOTIFY (time_t) 0
+
+static KSimpleDirWatchPrivate* dwp_self = 0;
+
+#ifdef HAVE_DNOTIFY
+
+static int dnotify_signal = 0;
+
+/* DNOTIFY signal handler
+ *
+ * As this is called asynchronously, only a flag is set and
+ * a rescan is requested.
+ * This is done by writing into a pipe to trigger a TQSocketNotifier
+ * watching on this pipe: a timer is started and after a timeout,
+ * the rescan is done.
+ */
+void KSimpleDirWatchPrivate::dnotify_handler(int, siginfo_t *si, void *)
+{
+ if (!dwp_self) return;
+
+ // write might change errno, we have to save it and restore it
+ // (Richard Stevens, Advanced programming in the Unix Environment)
+ int saved_errno = errno;
+
+ Entry* e = dwp_self->fd_Entry.find(si->si_fd);
+
+// kdDebug(7001) << "DNOTIFY Handler: fd " << si->si_fd << " path "
+// << TQString(e ? e->path:"unknown") << endl;
+
+ if(e && e->dn_fd == si->si_fd)
+ e->dirty = true;
+
+ char c = 0;
+ write(dwp_self->mPipe[1], &c, 1);
+ errno = saved_errno;
+}
+
+static struct sigaction old_sigio_act;
+/* DNOTIFY SIGIO signal handler
+ *
+ * When the kernel queue for the dnotify_signal overflows, a SIGIO is send.
+ */
+void KSimpleDirWatchPrivate::dnotify_sigio_handler(int sig, siginfo_t *si, void *p)
+{
+ if (dwp_self)
+ {
+ // write might change errno, we have to save it and restore it
+ // (Richard Stevens, Advanced programming in the Unix Environment)
+ int saved_errno = errno;
+
+ dwp_self->rescan_all = true;
+ char c = 0;
+ write(dwp_self->mPipe[1], &c, 1);
+
+ errno = saved_errno;
+ }
+
+ // Call previous signal handler
+ if (old_sigio_act.sa_flags & SA_SIGINFO)
+ {
+ if (old_sigio_act.sa_sigaction)
+ (*old_sigio_act.sa_sigaction)(sig, si, p);
+ }
+ else
+ {
+ if ((old_sigio_act.sa_handler != SIG_DFL) &&
+ (old_sigio_act.sa_handler != SIG_IGN))
+ (*old_sigio_act.sa_handler)(sig);
+ }
+}
+#endif
+
+
+//
+// Class KSimpleDirWatchPrivate (singleton)
+//
+
+/* All entries (files/directories) to be watched in the
+ * application (coming from multiple KSimpleDirWatch instances)
+ * are registered in a single KSimpleDirWatchPrivate instance.
+ *
+ * At the moment, the following methods for file watching
+ * are supported:
+ * - Polling: All files to be watched are polled regularly
+ * using stat (more precise: TQFileInfo.lastModified()).
+ * The polling frequency is determined from global kconfig
+ * settings, defaulting to 500 ms for local directories
+ * and 5000 ms for remote mounts
+ * - FAM (File Alternation Monitor): first used on IRIX, SGI
+ * has ported this method to LINUX. It uses a kernel part
+ * (IMON, sending change events to /dev/imon) and a user
+ * level damon (fam), to which applications connect for
+ * notification of file changes. For NFS, the fam damon
+ * on the NFS server machine is used; if IMON is not built
+ * into the kernel, fam uses polling for local files.
+ * - DNOTIFY: In late LINUX 2.3.x, directory notification was
+ * introduced. By opening a directory, you can request for
+ * UNIX signals to be sent to the process when a directory
+ * is changed.
+ * - INOTIFY: In LINUX 2.6.13, inode change notification was
+ * introduced. You're now able to watch arbitrary inode's
+ * for changes, and even get notification when they're
+ * unmounted.
+ */
+
+KSimpleDirWatchPrivate::KSimpleDirWatchPrivate()
+ : rescan_timer(0, "KSimpleDirWatchPrivate::rescan_timer")
+{
+ timer = new TQTimer(this, "KSimpleDirWatchPrivate::timer");
+ connect (timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotRescan()));
+ freq = 3600000; // 1 hour as upper bound
+ statEntries = 0;
+ delayRemove = false;
+ m_ref = 0;
+
+ KConfigGroup config(KGlobal::config(), TQCString("DirWatch"));
+ m_nfsPollInterval = config.readNumEntry("NFSPollInterval", 5000);
+ m_PollInterval = config.readNumEntry("PollInterval", 500);
+
+ TQString available("Stat");
+
+ // used for FAM and DNOTIFY
+ rescan_all = false;
+ connect(&rescan_timer, TQT_SIGNAL(timeout()), this, TQT_SLOT(slotRescan()));
+
+#ifdef HAVE_FAM
+ // It's possible that FAM server can't be started
+ if (FAMOpen(&fc) ==0) {
+ available += ", FAM";
+ use_fam=true;
+ sn = new TQSocketNotifier( FAMCONNECTION_GETFD(&fc),
+ TQSocketNotifier::Read, this);
+ connect( sn, TQT_SIGNAL(activated(int)),
+ this, TQT_SLOT(famEventReceived()) );
+ }
+ else {
+ kdDebug(7001) << "Can't use FAM (fam daemon not running?)" << endl;
+ use_fam=false;
+ }
+#endif
+
+#ifdef HAVE_INOTIFY
+ supports_inotify = true;
+
+ m_inotify_fd = inotify_init();
+
+ if ( m_inotify_fd <= 0 ) {
+ kdDebug(7001) << "Can't use Inotify, kernel doesn't support it" << endl;
+ supports_inotify = false;
+ }
+
+ {
+ struct utsname uts;
+ int major, minor, patch;
+ if (uname(&uts) < 0)
+ supports_inotify = false; // *shrug*
+ else if (sscanf(uts.release, "%d.%d.%d", &major, &minor, &patch) != 3)
+ supports_inotify = false; // *shrug*
+ else if( major * 1000000 + minor * 1000 + patch < 2006014 ) { // <2.6.14
+ kdDebug(7001) << "Can't use INotify, Linux kernel too old" << endl;
+ supports_inotify = false;
+ }
+ }
+
+ if ( supports_inotify ) {
+ available += ", Inotify";
+ fcntl(m_inotify_fd, F_SETFD, FD_CLOEXEC);
+
+ mSn = new TQSocketNotifier( m_inotify_fd, TQSocketNotifier::Read, this );
+ connect( mSn, TQT_SIGNAL(activated( int )), this, TQT_SLOT( slotActivated() ) );
+ }
+#endif
+
+#ifdef HAVE_DNOTIFY
+
+ // if we have inotify, disable dnotify.
+#ifdef HAVE_INOTIFY
+ supports_dnotify = !supports_inotify;
+#else
+ // otherwise, not guilty until proven guilty.
+ supports_dnotify = true;
+#endif
+
+ struct utsname uts;
+ int major, minor, patch;
+ if (uname(&uts) < 0)
+ supports_dnotify = false; // *shrug*
+ else if (sscanf(uts.release, "%d.%d.%d", &major, &minor, &patch) != 3)
+ supports_dnotify = false; // *shrug*
+ else if( major * 1000000 + minor * 1000 + patch < 2004019 ) { // <2.4.19
+ kdDebug(7001) << "Can't use DNotify, Linux kernel too old" << endl;
+ supports_dnotify = false;
+ }
+
+ if( supports_dnotify ) {
+ available += ", DNotify";
+
+ pipe(mPipe);
+ fcntl(mPipe[0], F_SETFD, FD_CLOEXEC);
+ fcntl(mPipe[1], F_SETFD, FD_CLOEXEC);
+ fcntl(mPipe[0], F_SETFL, O_NONBLOCK | fcntl(mPipe[0], F_GETFL));
+ fcntl(mPipe[1], F_SETFL, O_NONBLOCK | fcntl(mPipe[1], F_GETFL));
+ mSn = new TQSocketNotifier( mPipe[0], TQSocketNotifier::Read, this);
+ connect(mSn, TQT_SIGNAL(activated(int)), this, TQT_SLOT(slotActivated()));
+ // Install the signal handler only once
+ if ( dnotify_signal == 0 )
+ {
+ dnotify_signal = SIGRTMIN + 8;
+
+ struct sigaction act;
+ act.sa_sigaction = KSimpleDirWatchPrivate::dnotify_handler;
+ sigemptyset(&act.sa_mask);
+ act.sa_flags = SA_SIGINFO;
+#ifdef SA_RESTART
+ act.sa_flags |= SA_RESTART;
+#endif
+ sigaction(dnotify_signal, &act, NULL);
+
+ act.sa_sigaction = KSimpleDirWatchPrivate::dnotify_sigio_handler;
+ sigaction(SIGIO, &act, &old_sigio_act);
+ }
+ }
+ else
+ {
+ mPipe[0] = -1;
+ mPipe[1] = -1;
+ }
+#endif
+
+ kdDebug(7001) << "Available methods: " << available << endl;
+}
+
+/* This is called on app exit (KStaticDeleter) */
+KSimpleDirWatchPrivate::~KSimpleDirWatchPrivate()
+{
+ timer->stop();
+
+ /* remove all entries being watched */
+ removeEntries(0);
+
+#ifdef HAVE_FAM
+ if (use_fam) {
+ FAMClose(&fc);
+ kdDebug(7001) << "KSimpleDirWatch deleted (FAM closed)" << endl;
+ }
+#endif
+#ifdef HAVE_INOTIFY
+ if ( supports_inotify )
+ ::close( m_inotify_fd );
+#endif
+#ifdef HAVE_DNOTIFY
+ close(mPipe[0]);
+ close(mPipe[1]);
+#endif
+}
+
+#include <stdlib.h>
+
+void KSimpleDirWatchPrivate::slotActivated()
+{
+#ifdef HAVE_DNOTIFY
+ if ( supports_dnotify )
+ {
+ char dummy_buf[4096];
+ read(mPipe[0], &dummy_buf, 4096);
+
+ if (!rescan_timer.isActive())
+ rescan_timer.start(m_PollInterval, true /* singleshot */);
+
+ return;
+ }
+#endif
+
+#ifdef HAVE_INOTIFY
+ if ( !supports_inotify )
+ return;
+
+ int pending = -1;
+ int offset = 0;
+ char buf[4096];
+ assert( m_inotify_fd > -1 );
+ ioctl( m_inotify_fd, FIONREAD, &pending );
+
+ while ( pending > 0 ) {
+
+ if ( pending > (int)sizeof( buf ) )
+ pending = sizeof( buf );
+
+ pending = read( m_inotify_fd, buf, pending);
+
+ while ( pending > 0 ) {
+ struct inotify_event *event = (struct inotify_event *) &buf[offset];
+ pending -= sizeof( struct inotify_event ) + event->len;
+ offset += sizeof( struct inotify_event ) + event->len;
+
+ TQString path;
+ if ( event->len )
+ path = TQFile::decodeName( TQCString( event->name, event->len ) );
+
+ if ( path.length() && isNoisyFile( path.latin1() ) )
+ continue;
+
+ kdDebug(7001) << "ev wd: " << event->wd << " mask " << event->mask << " path: " << path << endl;
+
+ // now we're in deep trouble of finding the
+ // associated entries
+ // for now, we suck and iterate
+ for ( EntryMap::Iterator it = m_mapEntries.begin();
+ it != m_mapEntries.end(); ++it ) {
+ Entry* e = &( *it );
+ if ( e->wd == event->wd ) {
+ e->dirty = true;
+
+ if ( 1 || e->isDir) {
+ if( event->mask & IN_DELETE_SELF) {
+ kdDebug(7001) << "-->got deleteself signal for " << e->path << endl;
+ e->m_status = NonExistent;
+ if (e->isDir)
+ addEntry(0, TQDir::cleanDirPath(e->path+"/.."), e, true);
+ else
+ addEntry(0, TQFileInfo(e->path).dirPath(true), e, true);
+ }
+ if ( event->mask & IN_IGNORED ) {
+ e->wd = 0;
+ }
+ if ( event->mask & (IN_CREATE|IN_MOVED_TO) ) {
+ Entry *sub_entry = e->m_entries.first();
+ for(;sub_entry; sub_entry = e->m_entries.next())
+ if (sub_entry->path == e->path + "/" + path) break;
+
+ if (sub_entry /*&& sub_entry->isDir*/) {
+ removeEntry(0,e->path, sub_entry);
+ KDE_struct_stat stat_buf;
+ TQCString tpath = TQFile::encodeName(path);
+ KDE_stat(tpath, &stat_buf);
+
+ //sub_entry->isDir = S_ISDIR(stat_buf.st_mode);
+ //sub_entry->m_ctime = stat_buf.st_ctime;
+ //sub_entry->m_status = Normal;
+ //sub_entry->m_nlink = stat_buf.st_nlink;
+
+ if(!useINotify(sub_entry))
+ useStat(sub_entry);
+ sub_entry->dirty = true;
+ }
+ }
+ }
+
+ if (!rescan_timer.isActive())
+ rescan_timer.start(m_PollInterval, true /* singleshot */);
+
+ break; // there really should be only one matching wd
+ }
+ }
+
+ }
+ }
+#endif
+}
+
+/* In DNOTIFY/FAM mode, only entries which are marked dirty are scanned.
+ * We first need to mark all yet nonexistent, but possible created
+ * entries as dirty...
+ */
+void KSimpleDirWatchPrivate::Entry::propagate_dirty()
+{
+ for (TQPtrListIterator<Entry> sub_entry (m_entries);
+ sub_entry.current(); ++sub_entry)
+ {
+ if (!sub_entry.current()->dirty)
+ {
+ sub_entry.current()->dirty = true;
+ sub_entry.current()->propagate_dirty();
+ }
+ }
+}
+
+
+/* A KSimpleDirWatch instance is interested in getting events for
+ * this file/Dir entry.
+ */
+void KSimpleDirWatchPrivate::Entry::addClient(KSimpleDirWatch* instance)
+{
+ Client* client = m_clients.first();
+ for(;client; client = m_clients.next())
+ if (client->instance == instance) break;
+
+ if (client) {
+ client->count++;
+ return;
+ }
+
+ client = new Client;
+ client->instance = instance;
+ client->count = 1;
+ client->watchingStopped = instance->isStopped();
+ client->pending = NoChange;
+
+ m_clients.append(client);
+}
+
+void KSimpleDirWatchPrivate::Entry::removeClient(KSimpleDirWatch* instance)
+{
+ Client* client = m_clients.first();
+ for(;client; client = m_clients.next())
+ if (client->instance == instance) break;
+
+ if (client) {
+ client->count--;
+ if (client->count == 0) {
+ m_clients.removeRef(client);
+ delete client;
+ }
+ }
+}
+
+/* get number of clients */
+int KSimpleDirWatchPrivate::Entry::clients()
+{
+ int clients = 0;
+ Client* client = m_clients.first();
+ for(;client; client = m_clients.next())
+ clients += client->count;
+
+ return clients;
+}
+
+
+KSimpleDirWatchPrivate::Entry* KSimpleDirWatchPrivate::entry(const TQString& _path)
+{
+// we only support absolute paths
+ if (TQDir::isRelativePath(_path)) {
+ return 0;
+ }
+
+ TQString path = _path;
+
+ if ( path.length() > 1 && path.right(1) == "/" )
+ path.truncate( path.length() - 1 );
+
+ EntryMap::Iterator it = m_mapEntries.find( path );
+ if ( it == m_mapEntries.end() )
+ return 0;
+ else
+ return &(*it);
+}
+
+// set polling frequency for a entry and adjust global freq if needed
+void KSimpleDirWatchPrivate::useFreq(Entry* e, int newFreq)
+{
+ e->freq = newFreq;
+
+ // a reasonable frequency for the global polling timer
+ if (e->freq < freq) {
+ freq = e->freq;
+ if (timer->isActive()) timer->changeInterval(freq);
+ kdDebug(7001) << "Global Poll Freq is now " << freq << " msec" << endl;
+ }
+}
+
+
+#ifdef HAVE_FAM
+// setup FAM notification, returns false if not possible
+bool KSimpleDirWatchPrivate::useFAM(Entry* e)
+{
+ if (!use_fam) return false;
+
+ // handle FAM events to avoid deadlock
+ // (FAM sends back all files in a directory when monitoring)
+ famEventReceived();
+
+ e->m_mode = FAMMode;
+ e->dirty = false;
+
+ if (e->isDir) {
+ if (e->m_status == NonExistent) {
+ // If the directory does not exist we watch the parent directory
+ addEntry(0, TQDir::cleanDirPath(e->path+"/.."), e, true);
+ }
+ else {
+ int res =FAMMonitorDirectory(&fc, TQFile::encodeName(e->path),
+ &(e->fr), e);
+ if (res<0) {
+ e->m_mode = UnknownMode;
+ use_fam=false;
+ return false;
+ }
+ kdDebug(7001) << " Setup FAM (Req "
+ << FAMREQUEST_GETREQNUM(&(e->fr))
+ << ") for " << e->path << endl;
+ }
+ }
+ else {
+ if (e->m_status == NonExistent) {
+ // If the file does not exist we watch the directory
+ addEntry(0, TQFileInfo(e->path).dirPath(true), e, true);
+ }
+ else {
+ int res = FAMMonitorFile(&fc, TQFile::encodeName(e->path),
+ &(e->fr), e);
+ if (res<0) {
+ e->m_mode = UnknownMode;
+ use_fam=false;
+ return false;
+ }
+
+ kdDebug(7001) << " Setup FAM (Req "
+ << FAMREQUEST_GETREQNUM(&(e->fr))
+ << ") for " << e->path << endl;
+ }
+ }
+
+ // handle FAM events to avoid deadlock
+ // (FAM sends back all files in a directory when monitoring)
+ famEventReceived();
+
+ return true;
+}
+#endif
+
+
+#ifdef HAVE_DNOTIFY
+// setup DNotify notification, returns false if not possible
+bool KSimpleDirWatchPrivate::useDNotify(Entry* e)
+{
+ e->dn_fd = 0;
+ e->dirty = false;
+ if (!supports_dnotify) return false;
+
+ e->m_mode = DNotifyMode;
+
+ if (e->isDir) {
+ if (e->m_status == Normal) {
+ int fd = KDE_open(TQFile::encodeName(e->path).data(), O_RDONLY);
+ // Migrate fd to somewhere above 128. Some libraries have
+ // constructs like:
+ // fd = socket(...)
+ // if (fd > ARBITRARY_LIMIT)
+ // return error;
+ //
+ // Since programs might end up using a lot of KSimpleDirWatch objects
+ // for a rather long time the above braindamage could get
+ // triggered.
+ //
+ // By moving the ksimpledirwatch fd's to > 128, calls like socket() will keep
+ // returning fd's < ARBITRARY_LIMIT for a bit longer.
+ int fd2 = fcntl(fd, F_DUPFD, 128);
+ if (fd2 >= 0)
+ {
+ close(fd);
+ fd = fd2;
+ }
+ if (fd<0) {
+ e->m_mode = UnknownMode;
+ return false;
+ }
+
+ int mask = DN_DELETE|DN_CREATE|DN_RENAME|DN_MULTISHOT;
+ // if dependant is a file watch, we check for MODIFY & ATTRIB too
+ for(Entry* dep=e->m_entries.first();dep;dep=e->m_entries.next())
+ if (!dep->isDir) { mask |= DN_MODIFY|DN_ATTRIB; break; }
+
+ if(fcntl(fd, F_SETSIG, dnotify_signal) < 0 ||
+ fcntl(fd, F_NOTIFY, mask) < 0) {
+
+ kdDebug(7001) << "Not using Linux Directory Notifications."
+ << endl;
+ supports_dnotify = false;
+ ::close(fd);
+ e->m_mode = UnknownMode;
+ return false;
+ }
+
+ fd_Entry.replace(fd, e);
+ e->dn_fd = fd;
+
+ kdDebug(7001) << " Setup DNotify (fd " << fd
+ << ") for " << e->path << endl;
+ }
+ else { // NotExisting
+ addEntry(0, TQDir::cleanDirPath(e->path+"/.."), e, true);
+ }
+ }
+ else { // File
+ // we always watch the directory (DNOTIFY can't watch files alone)
+ // this notifies us about changes of files therein
+ addEntry(0, TQFileInfo(e->path).dirPath(true), e, true);
+ }
+
+ return true;
+}
+#endif
+
+#ifdef HAVE_INOTIFY
+// setup INotify notification, returns false if not possible
+bool KSimpleDirWatchPrivate::useINotify( Entry* e )
+{
+ e->wd = 0;
+ e->dirty = false;
+ if (!supports_inotify) return false;
+
+ e->m_mode = INotifyMode;
+
+ int mask = IN_DELETE|IN_DELETE_SELF|IN_CREATE|IN_MOVE|IN_MOVE_SELF|IN_DONT_FOLLOW;
+ if(!e->isDir)
+ mask |= IN_MODIFY|IN_ATTRIB;
+ else
+ mask |= IN_ONLYDIR;
+
+ // if dependant is a file watch, we check for MODIFY & ATTRIB too
+ for(Entry* dep=e->m_entries.first();dep;dep=e->m_entries.next()) {
+ if (!dep->isDir) { mask |= IN_MODIFY|IN_ATTRIB; break; }
+ }
+
+ if ( ( e->wd = inotify_add_watch( m_inotify_fd,
+ TQFile::encodeName( e->path ), mask) ) > 0 )
+ return true;
+
+ if ( e->m_status == NonExistent ) {
+ if (e->isDir)
+ addEntry(0, TQDir::cleanDirPath(e->path+"/.."), e, true);
+ else
+ addEntry(0, TQFileInfo(e->path).dirPath(true), e, true);
+ return true;
+ }
+
+ return false;
+}
+#endif
+
+bool KSimpleDirWatchPrivate::useStat(Entry* e)
+{
+ useFreq(e, m_PollInterval);
+
+ if (e->m_mode != StatMode) {
+ e->m_mode = StatMode;
+ statEntries++;
+
+ if ( statEntries == 1 ) {
+ // if this was first STAT entry (=timer was stopped)
+ timer->start(freq); // then start the timer
+ kdDebug(7001) << " Started Polling Timer, freq " << freq << endl;
+ }
+ }
+
+ kdDebug(7001) << " Setup Stat (freq " << e->freq
+ << ") for " << e->path << endl;
+
+ return true;
+}
+
+
+/* If <instance> !=0, this KSimpleDirWatch instance wants to watch at <_path>,
+ * providing in <isDir> the type of the entry to be watched.
+ * Sometimes, entries are dependant on each other: if <sub_entry> !=0,
+ * this entry needs another entry to watch himself (when notExistent).
+ */
+void KSimpleDirWatchPrivate::addEntry(KSimpleDirWatch* instance, const TQString& _path,
+ Entry* sub_entry, bool isDir)
+{
+ TQString path = _path;
+ if (path.startsWith("/dev/") || (path == "/dev"))
+ return; // Don't even go there.
+
+ if ( path.length() > 1 && path.right(1) == "/" )
+ path.truncate( path.length() - 1 );
+
+ EntryMap::Iterator it = m_mapEntries.find( path );
+ if ( it != m_mapEntries.end() )
+ {
+ if (sub_entry) {
+ (*it).m_entries.append(sub_entry);
+ kdDebug(7001) << "Added already watched Entry " << path
+ << " (for " << sub_entry->path << ")" << endl;
+
+#ifdef HAVE_DNOTIFY
+ {
+ Entry* e = &(*it);
+ if( (e->m_mode == DNotifyMode) && (e->dn_fd > 0) ) {
+ int mask = DN_DELETE|DN_CREATE|DN_RENAME|DN_MULTISHOT;
+ // if dependant is a file watch, we check for MODIFY & ATTRIB too
+ for(Entry* dep=e->m_entries.first();dep;dep=e->m_entries.next())
+ if (!dep->isDir) { mask |= DN_MODIFY|DN_ATTRIB; break; }
+ if( fcntl(e->dn_fd, F_NOTIFY, mask) < 0) { // shouldn't happen
+ ::close(e->dn_fd);
+ e->m_mode = UnknownMode;
+ fd_Entry.remove(e->dn_fd);
+ e->dn_fd = 0;
+ useStat( e );
+ }
+ }
+ }
+#endif
+
+#ifdef HAVE_INOTIFY
+ {
+ Entry* e = &(*it);
+ if( (e->m_mode == INotifyMode) && (e->wd > 0) ) {
+ int mask = IN_DELETE|IN_DELETE_SELF|IN_CREATE|IN_MOVE|IN_MOVE_SELF|IN_DONT_FOLLOW;
+ if(!e->isDir)
+ mask |= IN_MODIFY|IN_ATTRIB;
+ else
+ mask |= IN_ONLYDIR;
+
+ inotify_rm_watch (m_inotify_fd, e->wd);
+ e->wd = inotify_add_watch( m_inotify_fd, TQFile::encodeName( e->path ), mask);
+ }
+ }
+#endif
+
+ }
+ else {
+ (*it).addClient(instance);
+ kdDebug(7001) << "Added already watched Entry " << path
+ << " (now " << (*it).clients() << " clients)"
+ << TQString(TQString(" [%1]").arg(instance->name())) << endl;
+ }
+ return;
+ }
+
+ // we have a new path to watch
+
+ KDE_struct_stat stat_buf;
+ TQCString tpath = TQFile::encodeName(path);
+ bool exists = (KDE_stat(tpath, &stat_buf) == 0);
+
+ Entry newEntry;
+ m_mapEntries.insert( path, newEntry );
+ // the insert does a copy, so we have to use <e> now
+ Entry* e = &(m_mapEntries[path]);
+
+ if (exists) {
+ e->isDir = S_ISDIR(stat_buf.st_mode);
+
+ if (e->isDir && !isDir)
+ kdWarning() << "KSimpleDirWatch: " << path << " is a directory. Use addDir!" << endl;
+ else if (!e->isDir && isDir)
+ kdWarning() << "KSimpleDirWatch: " << path << " is a file. Use addFile!" << endl;
+
+ e->m_ctime = stat_buf.st_ctime;
+ e->m_status = Normal;
+ e->m_nlink = stat_buf.st_nlink;
+ }
+ else {
+ e->isDir = isDir;
+ e->m_ctime = invalid_ctime;
+ e->m_status = NonExistent;
+ e->m_nlink = 0;
+ }
+
+ e->path = path;
+ if (sub_entry)
+ e->m_entries.append(sub_entry);
+ else
+ e->addClient(instance);
+
+ kdDebug(7001) << "Added " << (e->isDir ? "Dir ":"File ") << path
+ << (e->m_status == NonExistent ? " NotExisting" : "")
+ << (sub_entry ? TQString(TQString(" for %1").arg(sub_entry->path)) : TQString(""))
+ << (instance ? TQString(TQString(" [%1]").arg(instance->name())) : TQString(""))
+ << endl;
+
+
+ // now setup the notification method
+ e->m_mode = UnknownMode;
+ e->msecLeft = 0;
+
+ if ( isNoisyFile( tpath ) )
+ return;
+
+#ifdef HAVE_FAM
+ if (useFAM(e)) return;
+#endif
+
+#ifdef HAVE_INOTIFY
+ if (useINotify(e)) return;
+#endif
+
+#ifdef HAVE_DNOTIFY
+ if (useDNotify(e)) return;
+#endif
+
+ useStat(e);
+}
+
+
+void KSimpleDirWatchPrivate::removeEntry( KSimpleDirWatch* instance,
+ const TQString& _path, Entry* sub_entry )
+{
+ kdDebug(7001) << "KSimpleDirWatchPrivate::removeEntry for '" << _path << "' sub_entry: " << sub_entry << endl;
+ Entry* e = entry(_path);
+ if (!e) {
+ kdDebug(7001) << "KSimpleDirWatchPrivate::removeEntry can't handle '" << _path << "'" << endl;
+ return;
+ }
+
+ if (sub_entry)
+ e->m_entries.removeRef(sub_entry);
+ else
+ e->removeClient(instance);
+
+ if (e->m_clients.count() || e->m_entries.count()) {
+ kdDebug(7001) << "removeEntry: unwatched " << e->path << " " << _path << endl;
+ return;
+ }
+
+ if (delayRemove) {
+ // removeList is allowed to contain any entry at most once
+ if (removeList.findRef(e)==-1)
+ removeList.append(e);
+ // now e->isValid() is false
+ return;
+ }
+
+#ifdef HAVE_FAM
+ if (e->m_mode == FAMMode) {
+ if ( e->m_status == Normal) {
+ FAMCancelMonitor(&fc, &(e->fr) );
+ kdDebug(7001) << "Cancelled FAM (Req "
+ << FAMREQUEST_GETREQNUM(&(e->fr))
+ << ") for " << e->path << endl;
+ }
+ else {
+ if (e->isDir)
+ removeEntry(0, TQDir::cleanDirPath(e->path+"/.."), e);
+ else
+ removeEntry(0, TQFileInfo(e->path).dirPath(true), e);
+ }
+ }
+#endif
+
+#ifdef HAVE_INOTIFY
+ kdDebug(7001) << "inotify remove " << ( e->m_mode == INotifyMode ) << " " << ( e->m_status == Normal ) << endl;
+ if (e->m_mode == INotifyMode) {
+ if ( e->m_status == Normal ) {
+ (void) inotify_rm_watch( m_inotify_fd, e->wd );
+ kdDebug(7001) << "Cancelled INotify (fd " <<
+ m_inotify_fd << ", " << e->wd <<
+ ") for " << e->path << endl;
+ }
+ else {
+ if (e->isDir)
+ removeEntry(0, TQDir::cleanDirPath(e->path+"/.."), e);
+ else
+ removeEntry(0, TQFileInfo(e->path).dirPath(true), e);
+ }
+ }
+#endif
+
+#ifdef HAVE_DNOTIFY
+ if (e->m_mode == DNotifyMode) {
+ if (!e->isDir) {
+ removeEntry(0, TQFileInfo(e->path).dirPath(true), e);
+ }
+ else { // isDir
+ // must close the FD.
+ if ( e->m_status == Normal) {
+ if (e->dn_fd) {
+ ::close(e->dn_fd);
+ fd_Entry.remove(e->dn_fd);
+
+ kdDebug(7001) << "Cancelled DNotify (fd " << e->dn_fd
+ << ") for " << e->path << endl;
+ e->dn_fd = 0;
+
+ }
+ }
+ else {
+ removeEntry(0, TQDir::cleanDirPath(e->path+"/.."), e);
+ }
+ }
+ }
+#endif
+
+ if (e->m_mode == StatMode) {
+ statEntries--;
+ if ( statEntries == 0 ) {
+ timer->stop(); // stop timer if lists are empty
+ kdDebug(7001) << " Stopped Polling Timer" << endl;
+ }
+ }
+
+ kdDebug(7001) << "Removed " << (e->isDir ? "Dir ":"File ") << e->path
+ << (sub_entry ? TQString(TQString(" for %1").arg(sub_entry->path)) : TQString(""))
+ << (instance ? TQString(TQString(" [%1]").arg(instance->name())) : TQString(""))
+ << endl;
+ m_mapEntries.remove( e->path ); // <e> not valid any more
+}
+
+
+/* Called from KSimpleDirWatch destructor:
+ * remove <instance> as client from all entries
+ */
+void KSimpleDirWatchPrivate::removeEntries( KSimpleDirWatch* instance )
+{
+ TQPtrList<Entry> list;
+ int minfreq = 3600000;
+
+ // put all entries where instance is a client in list
+ EntryMap::Iterator it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it ) {
+ Client* c = (*it).m_clients.first();
+ for(;c;c=(*it).m_clients.next())
+ if (c->instance == instance) break;
+ if (c) {
+ c->count = 1; // forces deletion of instance as client
+ list.append(&(*it));
+ }
+ else if ( (*it).m_mode == StatMode && (*it).freq < minfreq )
+ minfreq = (*it).freq;
+ }
+
+ for(Entry* e=list.first();e;e=list.next())
+ removeEntry(instance, e->path, 0);
+
+ if (minfreq > freq) {
+ // we can decrease the global polling frequency
+ freq = minfreq;
+ if (timer->isActive()) timer->changeInterval(freq);
+ kdDebug(7001) << "Poll Freq now " << freq << " msec" << endl;
+ }
+}
+
+// instance ==0: stop scanning for all instances
+bool KSimpleDirWatchPrivate::stopEntryScan( KSimpleDirWatch* instance, Entry* e)
+{
+ int stillWatching = 0;
+ Client* c = e->m_clients.first();
+ for(;c;c=e->m_clients.next()) {
+ if (!instance || instance == c->instance)
+ c->watchingStopped = true;
+ else if (!c->watchingStopped)
+ stillWatching += c->count;
+ }
+
+ kdDebug(7001) << instance->name() << " stopped scanning " << e->path
+ << " (now " << stillWatching << " watchers)" << endl;
+
+ if (stillWatching == 0) {
+ // if nobody is interested, we don't watch
+ e->m_ctime = invalid_ctime; // invalid
+ e->m_status = NonExistent;
+ // e->m_status = Normal;
+ }
+ return true;
+}
+
+// instance ==0: start scanning for all instances
+bool KSimpleDirWatchPrivate::restartEntryScan( KSimpleDirWatch* instance, Entry* e,
+ bool notify)
+{
+ int wasWatching = 0, newWatching = 0;
+ Client* c = e->m_clients.first();
+ for(;c;c=e->m_clients.next()) {
+ if (!c->watchingStopped)
+ wasWatching += c->count;
+ else if (!instance || instance == c->instance) {
+ c->watchingStopped = false;
+ newWatching += c->count;
+ }
+ }
+ if (newWatching == 0)
+ return false;
+
+ kdDebug(7001) << (instance ? instance->name() : "all") << " restarted scanning " << e->path
+ << " (now " << wasWatching+newWatching << " watchers)" << endl;
+
+ // restart watching and emit pending events
+
+ int ev = NoChange;
+ if (wasWatching == 0) {
+ if (!notify) {
+ KDE_struct_stat stat_buf;
+ bool exists = (KDE_stat(TQFile::encodeName(e->path), &stat_buf) == 0);
+ if (exists) {
+ e->m_ctime = stat_buf.st_ctime;
+ e->m_status = Normal;
+ e->m_nlink = stat_buf.st_nlink;
+ }
+ else {
+ e->m_ctime = invalid_ctime;
+ e->m_status = NonExistent;
+ e->m_nlink = 0;
+ }
+ }
+ e->msecLeft = 0;
+ ev = scanEntry(e);
+ }
+ emitEvent(e,ev);
+
+ return true;
+}
+
+// instance ==0: stop scanning for all instances
+void KSimpleDirWatchPrivate::stopScan(KSimpleDirWatch* instance)
+{
+ EntryMap::Iterator it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it )
+ stopEntryScan(instance, &(*it));
+}
+
+
+void KSimpleDirWatchPrivate::startScan(KSimpleDirWatch* instance,
+ bool notify, bool skippedToo )
+{
+ if (!notify)
+ resetList(instance,skippedToo);
+
+ EntryMap::Iterator it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it )
+ restartEntryScan(instance, &(*it), notify);
+
+ // timer should still be running when in polling mode
+}
+
+
+// clear all pending events, also from stopped
+void KSimpleDirWatchPrivate::resetList( KSimpleDirWatch* /*instance*/,
+ bool skippedToo )
+{
+ EntryMap::Iterator it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it ) {
+
+ Client* c = (*it).m_clients.first();
+ for(;c;c=(*it).m_clients.next())
+ if (!c->watchingStopped || skippedToo)
+ c->pending = NoChange;
+ }
+}
+
+// Return event happened on <e>
+//
+int KSimpleDirWatchPrivate::scanEntry(Entry* e)
+{
+#ifdef HAVE_FAM
+ if (e->m_mode == FAMMode) {
+ // we know nothing has changed, no need to stat
+ if(!e->dirty) return NoChange;
+ e->dirty = false;
+ }
+#endif
+
+ // Shouldn't happen: Ignore "unknown" notification method
+ if (e->m_mode == UnknownMode) return NoChange;
+
+#if defined ( HAVE_DNOTIFY ) || defined( HAVE_INOTIFY )
+ if (e->m_mode == DNotifyMode || e->m_mode == INotifyMode ) {
+ // we know nothing has changed, no need to stat
+ if(!e->dirty) return NoChange;
+ kdDebug(7001) << "scanning " << e->path << " " << e->m_status << " " << e->m_ctime << endl;
+ e->dirty = false;
+ }
+#endif
+
+ if (e->m_mode == StatMode) {
+ // only scan if timeout on entry timer happens;
+ // e.g. when using 500msec global timer, a entry
+ // with freq=5000 is only watched every 10th time
+
+ e->msecLeft -= freq;
+ if (e->msecLeft>0) return NoChange;
+ e->msecLeft += e->freq;
+ }
+
+ KDE_struct_stat stat_buf;
+ bool exists = (KDE_stat(TQFile::encodeName(e->path), &stat_buf) == 0);
+ if (exists) {
+
+ if (e->m_status == NonExistent) {
+ e->m_ctime = stat_buf.st_ctime;
+ e->m_status = Normal;
+ e->m_nlink = stat_buf.st_nlink;
+ return Created;
+ }
+
+ if ( (e->m_ctime != invalid_ctime) &&
+ ((stat_buf.st_ctime != e->m_ctime) ||
+ (stat_buf.st_nlink != (nlink_t) e->m_nlink)) ) {
+ e->m_ctime = stat_buf.st_ctime;
+ e->m_nlink = stat_buf.st_nlink;
+ return Changed;
+ }
+
+ return NoChange;
+ }
+
+ // dir/file doesn't exist
+
+ if (e->m_ctime == invalid_ctime && e->m_status == NonExistent) {
+ e->m_nlink = 0;
+ e->m_status = NonExistent;
+ return NoChange;
+ }
+
+ e->m_ctime = invalid_ctime;
+ e->m_nlink = 0;
+ e->m_status = NonExistent;
+
+ return Deleted;
+}
+
+/* Notify all interested KSimpleDirWatch instances about a given event on an entry
+ * and stored pending events. When watching is stopped, the event is
+ * added to the pending events.
+ */
+void KSimpleDirWatchPrivate::emitEvent(Entry* e, int event, const TQString &fileName)
+{
+ TQString path = e->path;
+ if (!fileName.isEmpty()) {
+ if (!TQDir::isRelativePath(fileName))
+ path = fileName;
+ else
+#ifdef Q_OS_UNIX
+ path += "/" + fileName;
+#elif defined(Q_WS_WIN)
+ //current drive is passed instead of /
+ path += TQDir::currentDirPath().left(2) + "/" + fileName;
+#endif
+ }
+
+ TQPtrListIterator<Client> cit( e->m_clients );
+ for ( ; cit.current(); ++cit )
+ {
+ Client* c = cit.current();
+
+ if (c->instance==0 || c->count==0) continue;
+
+ if (c->watchingStopped) {
+ // add event to pending...
+ if (event == Changed)
+ c->pending |= event;
+ else if (event == Created || event == Deleted)
+ c->pending = event;
+ continue;
+ }
+ // not stopped
+ if (event == NoChange || event == Changed)
+ event |= c->pending;
+ c->pending = NoChange;
+ if (event == NoChange) continue;
+
+ if (event & Deleted) {
+ c->instance->setDeleted(path);
+ // emit only Deleted event...
+ continue;
+ }
+
+ if (event & Created) {
+ c->instance->setCreated(path);
+ // possible emit Change event after creation
+ }
+
+ if (event & Changed)
+ c->instance->setDirty(path);
+ }
+}
+
+// Remove entries which were marked to be removed
+void KSimpleDirWatchPrivate::slotRemoveDelayed()
+{
+ Entry* e;
+ delayRemove = false;
+ for(e=removeList.first();e;e=removeList.next())
+ removeEntry(0, e->path, 0);
+ removeList.clear();
+}
+
+/* Scan all entries to be watched for changes. This is done regularly
+ * when polling and once after a DNOTIFY signal. This is NOT used by FAM.
+ */
+void KSimpleDirWatchPrivate::slotRescan()
+{
+ EntryMap::Iterator it;
+
+ // People can do very long things in the slot connected to dirty(),
+ // like showing a message box. We don't want to keep polling during
+ // that time, otherwise the value of 'delayRemove' will be reset.
+ bool timerRunning = timer->isActive();
+ if ( timerRunning )
+ timer->stop();
+
+ // We delay deletions of entries this way.
+ // removeDir(), when called in slotDirty(), can cause a crash otherwise
+ delayRemove = true;
+
+#if defined(HAVE_DNOTIFY) || defined(HAVE_INOTIFY)
+ TQPtrList<Entry> dList, cList;
+#endif
+
+ if (rescan_all)
+ {
+ // mark all as dirty
+ it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it )
+ (*it).dirty = true;
+ rescan_all = false;
+ }
+ else
+ {
+ // progate dirty flag to dependant entries (e.g. file watches)
+ it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it )
+ if (((*it).m_mode == INotifyMode || (*it).m_mode == DNotifyMode) && (*it).dirty )
+ (*it).propagate_dirty();
+ }
+
+ it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it ) {
+ // we don't check invalid entries (i.e. remove delayed)
+ if (!(*it).isValid()) continue;
+
+ int ev = scanEntry( &(*it) );
+
+
+#ifdef HAVE_INOTIFY
+ if ((*it).m_mode == INotifyMode && ev == Created && (*it).wd == 0) {
+ cList.append( &(*it) );
+ if (! useINotify( &(*it) )) {
+ useStat( &(*it) );
+ }
+ }
+#endif
+
+#ifdef HAVE_DNOTIFY
+ if ((*it).m_mode == DNotifyMode) {
+ if ((*it).isDir && (ev == Deleted)) {
+ dList.append( &(*it) );
+
+ // must close the FD.
+ if ((*it).dn_fd) {
+ ::close((*it).dn_fd);
+ fd_Entry.remove((*it).dn_fd);
+ (*it).dn_fd = 0;
+ }
+ }
+
+ else if ((*it).isDir && (ev == Created)) {
+ // For created, but yet without DNOTIFYing ...
+ if ( (*it).dn_fd == 0) {
+ cList.append( &(*it) );
+ if (! useDNotify( &(*it) )) {
+ // if DNotify setup fails...
+ useStat( &(*it) );
+ }
+ }
+ }
+ }
+#endif
+
+ if ( ev != NoChange )
+ emitEvent( &(*it), ev);
+ }
+
+
+#if defined(HAVE_DNOTIFY) || defined(HAVE_INOTIFY)
+ // Scan parent of deleted directories for new creation
+ Entry* e;
+ for(e=dList.first();e;e=dList.next())
+ addEntry(0, TQDir::cleanDirPath( e->path+"/.."), e, true);
+
+ // Remove watch of parent of new created directories
+ for(e=cList.first();e;e=cList.next())
+ removeEntry(0, TQDir::cleanDirPath( e->path+"/.."), e);
+#endif
+
+ if ( timerRunning )
+ timer->start(freq);
+
+ TQTimer::singleShot(0, this, TQT_SLOT(slotRemoveDelayed()));
+}
+
+bool KSimpleDirWatchPrivate::isNoisyFile( const char * filename )
+{
+ // $HOME/.X.err grows with debug output, so don't notify change
+ if ( *filename == '.') {
+ if (strncmp(filename, ".X.err", 6) == 0) return true;
+ if (strncmp(filename, ".xsession-errors", 16) == 0) return true;
+ // fontconfig updates the cache on every KDE app start
+ // (inclusive kio_thumbnail slaves)
+ if (strncmp(filename, ".fonts.cache", 12) == 0) return true;
+ }
+
+ return false;
+}
+
+#ifdef HAVE_FAM
+void KSimpleDirWatchPrivate::famEventReceived()
+{
+ static FAMEvent fe;
+
+ delayRemove = true;
+
+ while(use_fam && FAMPending(&fc)) {
+ if (FAMNextEvent(&fc, &fe) == -1) {
+ kdWarning(7001) << "FAM connection problem, switching to polling."
+ << endl;
+ use_fam = false;
+ delete sn; sn = 0;
+
+ // Replace all FAMMode entries with DNotify/Stat
+ EntryMap::Iterator it;
+ it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it )
+ if ((*it).m_mode == FAMMode && (*it).m_clients.count()>0) {
+#ifdef HAVE_INOTIFY
+ if (useINotify( &(*it) )) continue;
+#endif
+#ifdef HAVE_DNOTIFY
+ if (useDNotify( &(*it) )) continue;
+#endif
+ useStat( &(*it) );
+ }
+ }
+ else
+ checkFAMEvent(&fe);
+ }
+
+ TQTimer::singleShot(0, this, TQT_SLOT(slotRemoveDelayed()));
+}
+
+void KSimpleDirWatchPrivate::checkFAMEvent(FAMEvent* fe)
+{
+ // Don't be too verbose ;-)
+ if ((fe->code == FAMExists) ||
+ (fe->code == FAMEndExist) ||
+ (fe->code == FAMAcknowledge)) return;
+
+ if ( isNoisyFile( fe->filename ) )
+ return;
+
+ Entry* e = 0;
+ EntryMap::Iterator it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it )
+ if (FAMREQUEST_GETREQNUM(&( (*it).fr )) ==
+ FAMREQUEST_GETREQNUM(&(fe->fr)) ) {
+ e = &(*it);
+ break;
+ }
+
+ // Entry* e = static_cast<Entry*>(fe->userdata);
+
+#if 0 // #88538
+ kdDebug(7001) << "Processing FAM event ("
+ << ((fe->code == FAMChanged) ? "FAMChanged" :
+ (fe->code == FAMDeleted) ? "FAMDeleted" :
+ (fe->code == FAMStartExecuting) ? "FAMStartExecuting" :
+ (fe->code == FAMStopExecuting) ? "FAMStopExecuting" :
+ (fe->code == FAMCreated) ? "FAMCreated" :
+ (fe->code == FAMMoved) ? "FAMMoved" :
+ (fe->code == FAMAcknowledge) ? "FAMAcknowledge" :
+ (fe->code == FAMExists) ? "FAMExists" :
+ (fe->code == FAMEndExist) ? "FAMEndExist" : "Unknown Code")
+ << ", " << fe->filename
+ << ", Req " << FAMREQUEST_GETREQNUM(&(fe->fr))
+ << ")" << endl;
+#endif
+
+ if (!e) {
+ // this happens e.g. for FAMAcknowledge after deleting a dir...
+ // kdDebug(7001) << "No entry for FAM event ?!" << endl;
+ return;
+ }
+
+ if (e->m_status == NonExistent) {
+ kdDebug(7001) << "FAM event for nonExistent entry " << e->path << endl;
+ return;
+ }
+
+ // Delayed handling. This rechecks changes with own stat calls.
+ e->dirty = true;
+ if (!rescan_timer.isActive())
+ rescan_timer.start(m_PollInterval, true);
+
+ // needed FAM control actions on FAM events
+ if (e->isDir)
+ switch (fe->code)
+ {
+ case FAMDeleted:
+ // file absolute: watched dir
+ if (!TQDir::isRelativePath(fe->filename))
+ {
+ // a watched directory was deleted
+
+ e->m_status = NonExistent;
+ FAMCancelMonitor(&fc, &(e->fr) ); // needed ?
+ kdDebug(7001) << "Cancelled FAMReq "
+ << FAMREQUEST_GETREQNUM(&(e->fr))
+ << " for " << e->path << endl;
+ // Scan parent for a new creation
+ addEntry(0, TQDir::cleanDirPath( e->path+"/.."), e, true);
+ }
+ break;
+
+ case FAMCreated: {
+ // check for creation of a directory we have to watch
+ Entry *sub_entry = e->m_entries.first();
+ for(;sub_entry; sub_entry = e->m_entries.next())
+ if (sub_entry->path == e->path + "/" + fe->filename) break;
+ if (sub_entry && sub_entry->isDir) {
+ TQString path = e->path;
+ removeEntry(0,e->path,sub_entry); // <e> can be invalid here!!
+ sub_entry->m_status = Normal;
+ if (!useFAM(sub_entry))
+#ifdef HAVE_INOTIFY
+ if (!useINotify(sub_entry ))
+#endif
+ useStat(sub_entry);
+ }
+ break;
+ }
+
+ default:
+ break;
+ }
+}
+#else
+void KSimpleDirWatchPrivate::famEventReceived() {}
+#endif
+
+
+void KSimpleDirWatchPrivate::statistics()
+{
+ EntryMap::Iterator it;
+
+ kdDebug(7001) << "Entries watched:" << endl;
+ if (m_mapEntries.count()==0) {
+ kdDebug(7001) << " None." << endl;
+ }
+ else {
+ it = m_mapEntries.begin();
+ for( ; it != m_mapEntries.end(); ++it ) {
+ Entry* e = &(*it);
+ kdDebug(7001) << " " << e->path << " ("
+ << ((e->m_status==Normal)?"":"Nonexistent ")
+ << (e->isDir ? "Dir":"File") << ", using "
+ << ((e->m_mode == FAMMode) ? "FAM" :
+ (e->m_mode == INotifyMode) ? "INotify" :
+ (e->m_mode == DNotifyMode) ? "DNotify" :
+ (e->m_mode == StatMode) ? "Stat" : "Unknown Method")
+ << ")" << endl;
+
+ Client* c = e->m_clients.first();
+ for(;c; c = e->m_clients.next()) {
+ TQString pending;
+ if (c->watchingStopped) {
+ if (c->pending & Deleted) pending += "deleted ";
+ if (c->pending & Created) pending += "created ";
+ if (c->pending & Changed) pending += "changed ";
+ if (!pending.isEmpty()) pending = " (pending: " + pending + ")";
+ pending = ", stopped" + pending;
+ }
+ kdDebug(7001) << " by " << c->instance->name()
+ << " (" << c->count << " times)"
+ << pending << endl;
+ }
+ if (e->m_entries.count()>0) {
+ kdDebug(7001) << " dependent entries:" << endl;
+ Entry* d = e->m_entries.first();
+ for(;d; d = e->m_entries.next()) {
+ kdDebug(7001) << " " << d << endl;
+ kdDebug(7001) << " " << d->path << " (" << d << ") " << endl;
+ }
+ }
+ }
+ }
+}
+
+
+//
+// Class KSimpleDirWatch
+//
+
+static KStaticDeleter<KSimpleDirWatch> sd_dw;
+KSimpleDirWatch* KSimpleDirWatch::s_pSelf = 0L;
+
+KSimpleDirWatch* KSimpleDirWatch::self()
+{
+ if ( !s_pSelf ) {
+ sd_dw.setObject( s_pSelf, new KSimpleDirWatch );
+ }
+
+ return s_pSelf;
+}
+
+bool KSimpleDirWatch::exists()
+{
+ return s_pSelf != 0;
+}
+
+KSimpleDirWatch::KSimpleDirWatch (TQObject* parent, const char* name)
+ : TQObject(parent,name)
+{
+ if (!name) {
+ static int nameCounter = 0;
+
+ nameCounter++;
+ setName(TQString(TQString("KSimpleDirWatch-%1").arg(nameCounter)).ascii());
+ }
+
+ if (!dwp_self)
+ dwp_self = new KSimpleDirWatchPrivate;
+ d = dwp_self;
+ d->ref();
+
+ _isStopped = false;
+}
+
+KSimpleDirWatch::~KSimpleDirWatch()
+{
+ d->removeEntries(this);
+ if ( d->deref() )
+ {
+ // delete it if it's the last one
+ delete d;
+ dwp_self = 0L;
+ }
+}
+
+
+// TODO: add watchFiles/recursive support
+void KSimpleDirWatch::addDir( const TQString& _path,
+ bool watchFiles, bool recursive)
+{
+ if (watchFiles || recursive) {
+ kdDebug(7001) << "addDir - recursive/watchFiles not supported yet in KDE 3.x" << endl;
+ }
+ if (d) d->addEntry(this, _path, 0, true);
+}
+
+void KSimpleDirWatch::addFile( const TQString& _path )
+{
+ if (d) d->addEntry(this, _path, 0, false);
+}
+
+TQDateTime KSimpleDirWatch::ctime( const TQString &_path )
+{
+ KSimpleDirWatchPrivate::Entry* e = d->entry(_path);
+
+ if (!e)
+ return TQDateTime();
+
+ TQDateTime result;
+ result.setTime_t(e->m_ctime);
+ return result;
+}
+
+void KSimpleDirWatch::removeDir( const TQString& _path )
+{
+ if (d) d->removeEntry(this, _path, 0);
+}
+
+void KSimpleDirWatch::removeFile( const TQString& _path )
+{
+ if (d) d->removeEntry(this, _path, 0);
+}
+
+bool KSimpleDirWatch::stopDirScan( const TQString& _path )
+{
+ if (d) {
+ KSimpleDirWatchPrivate::Entry *e = d->entry(_path);
+ if (e && e->isDir) return d->stopEntryScan(this, e);
+ }
+ return false;
+}
+
+bool KSimpleDirWatch::restartDirScan( const TQString& _path )
+{
+ if (d) {
+ KSimpleDirWatchPrivate::Entry *e = d->entry(_path);
+ if (e && e->isDir)
+ // restart without notifying pending events
+ return d->restartEntryScan(this, e, false);
+ }
+ return false;
+}
+
+void KSimpleDirWatch::stopScan()
+{
+ if (d) d->stopScan(this);
+ _isStopped = true;
+}
+
+void KSimpleDirWatch::startScan( bool notify, bool skippedToo )
+{
+ _isStopped = false;
+ if (d) d->startScan(this, notify, skippedToo);
+}
+
+
+bool KSimpleDirWatch::contains( const TQString& _path ) const
+{
+ KSimpleDirWatchPrivate::Entry* e = d->entry(_path);
+ if (!e)
+ return false;
+
+ KSimpleDirWatchPrivate::Client* c = e->m_clients.first();
+ for(;c;c=e->m_clients.next())
+ if (c->instance == this) return true;
+
+ return false;
+}
+
+void KSimpleDirWatch::statistics()
+{
+ if (!dwp_self) {
+ kdDebug(7001) << "KSimpleDirWatch not used" << endl;
+ return;
+ }
+ dwp_self->statistics();
+}
+
+
+void KSimpleDirWatch::setCreated( const TQString & _file )
+{
+ kdDebug(7001) << name() << " emitting created " << _file << endl;
+ emit created( _file );
+}
+
+void KSimpleDirWatch::setDirty( const TQString & _file )
+{
+ kdDebug(7001) << name() << " emitting dirty " << _file << endl;
+ emit dirty( _file );
+}
+
+void KSimpleDirWatch::setDeleted( const TQString & _file )
+{
+ kdDebug(7001) << name() << " emitting deleted " << _file << endl;
+ emit deleted( _file );
+}
+
+KSimpleDirWatch::Method KSimpleDirWatch::internalMethod()
+{
+#ifdef HAVE_FAM
+ if (d->use_fam)
+ return KSimpleDirWatch::FAM;
+#endif
+#ifdef HAVE_INOTIFY
+ if (d->supports_inotify)
+ return KSimpleDirWatch::INotify;
+#endif
+#ifdef HAVE_DNOTIFY
+ if (d->supports_dnotify)
+ return KSimpleDirWatch::DNotify;
+#endif
+ return KSimpleDirWatch::Stat;
+}
+
+
+#include "ksimpledirwatch.moc"
+#include "ksimpledirwatch_p.moc"
+
+//sven
+
+// vim: sw=2 ts=8 et