#include <sys/stat.h>#include "mythmiscutil.h"#include <array>#include <cerrno>#include <cstdlib>#include <ctime>#include <iostream>#include <unistd.h>#include <fcntl.h>#include <sched.h>#include "compat.h"#include <QtGlobal>#include <QReadWriteLock>#include <QNetworkProxy>#include <QStringList>#include <QDataStream>#include <QUdpSocket>#include <QFileInfo>#include <QFile>#include <QDir>#include <QUrl>#include <QHostAddress>#include <QRegularExpression>#include <QRegularExpressionMatchIterator>#include "mythcorecontext.h"#include "exitcodes.h"#include "mythlogging.h"#include "mythsocket.h"#include "mythcoreutil.h"#include "mythsystemlegacy.h"
Go to the source code of this file.
Functions | |
| bool | getUptime (std::chrono::seconds &uptime) |
| bool | getMemStats (int &totalMB, int &freeMB, int &totalVM, int &freeVM) |
| Returns memory statistics in megabytes. More... | |
| loadArray | getLoadAvgs (void) |
| Returns the system load averages. More... | |
| bool | ping (const QString &host, std::chrono::milliseconds timeout) |
| Can we ping host within timeout seconds? More... | |
| bool | telnet (const QString &host, int port) |
| Can we talk to port on host? More... | |
| QString | createTempFile (QString name_template, bool dir) |
| bool | makeFileAccessible (const QString &filename) |
| QString | getResponse (const QString &query, const QString &def) |
| In an interactive shell, prompt the user to input a string. More... | |
| int | intResponse (const QString &query, int def) |
| In an interactive shell, prompt the user to input a number. More... | |
| QString | getSymlinkTarget (const QString &start_file, QStringList *intermediaries, unsigned maxLinks) |
| bool | IsMACAddress (const QString &MAC) |
| QString | FileHash (const QString &filename) |
| bool | WakeOnLAN (const QString &MAC) |
| bool | MythWakeup (const QString &wakeUpCommand, uint flags, std::chrono::seconds timeout) |
| bool | IsPulseAudioRunning (void) |
| Is A/V Sync destruction daemon is running on this host? More... | |
| bool | myth_nice (int val) |
| void | myth_yield (void) |
| bool | myth_ioprio (int) |
| Allows setting the I/O priority of the current process/thread. More... | |
| bool | MythRemoveDirectory (QDir &aDir) |
| void | setHttpProxy (void) |
| Get network proxy settings from OS, and use for [Q]Http[Comms]. More... | |
Function Documentation
◆ getUptime()
| bool getUptime | ( | std::chrono::seconds & | uptime | ) |
Definition at line 66 of file mythmiscutil.cpp.
Referenced by StatusBox::doMachineStatus(), BaseRequestHandler::HandleQueryUptime(), MainServer::HandleQueryUptime(), and NetworkControl::processQuery().
◆ getMemStats()
| getMemStats | ( | int & | totalMB, |
| int & | freeMB, | ||
| int & | totalVM, | ||
| int & | freeVM | ||
| ) |
Returns memory statistics in megabytes.
- Returns
- true if it succeeds, false otherwise.
Definition at line 109 of file mythmiscutil.cpp.
Referenced by StatusBox::doMachineStatus(), BaseRequestHandler::HandleQueryMemStats(), MainServer::HandleQueryMemStats(), and NetworkControl::processQuery().
◆ getLoadAvgs()
| getLoadAvgs | ( | void | ) |
Returns the system load averages.
- Returns
- A std::array<double,3> containing the system load averages. If the system call fails or is unsupported, returns array containing all -1.
Definition at line 176 of file mythmiscutil.cpp.
Referenced by StatusBox::doMachineStatus(), HttpStatus::FillStatusXML(), V2Status::FillStatusXML(), V2Status::GetBackendStatus(), BaseRequestHandler::HandleQueryLoad(), MainServer::HandleQueryLoad(), and NetworkControl::processQuery().
◆ ping()
| bool ping | ( | const QString & | host, |
| std::chrono::milliseconds | timeout | ||
| ) |
Can we ping host within timeout seconds?
Different operating systems use different parameters to specify a timeout to the ping command. FreeBSD and derivatives use '-t'; Linux and derivatives use '-w'. Using the right parameter also eliminates the need for the old behavior of falling back to pinging the localhost with and without a timeout, in order to characterize whether the right parameter was used in the first place.
- Note
- If ping fails to timeout on another supported platform, determine what parameter that platform's ping requires to specify the timeout and add another case to the #ifdef statement.
Definition at line 200 of file mythmiscutil.cpp.
Referenced by setHttpProxy().
◆ telnet()
| bool telnet | ( | const QString & | host, |
| int | port | ||
| ) |
Can we talk to port on host?
Definition at line 233 of file mythmiscutil.cpp.
Referenced by setHttpProxy().
◆ createTempFile()
| QString createTempFile | ( | QString | name_template, |
| bool | dir | ||
| ) |
Definition at line 324 of file mythmiscutil.cpp.
Referenced by DBUtil::CreateTemporaryDBConf(), and FillData::GrabData().
◆ makeFileAccessible()
| bool makeFileAccessible | ( | const QString & | filename | ) |
Definition at line 396 of file mythmiscutil.cpp.
Referenced by Content::GetPreviewImage(), V2Content::GetPreviewImage(), and PreviewGenerator::SavePreview().
◆ getResponse()
| QString getResponse | ( | const QString & | query, |
| const QString & | def | ||
| ) |
In an interactive shell, prompt the user to input a string.
Definition at line 411 of file mythmiscutil.cpp.
Referenced by intResponse(), ChannelData::promptForChannelUpdates(), and SchemaUpgradeWizard::PromptForUpgrade().
◆ intResponse()
| int intResponse | ( | const QString & | query, |
| int | def | ||
| ) |
In an interactive shell, prompt the user to input a number.
Definition at line 441 of file mythmiscutil.cpp.
◆ getSymlinkTarget()
| QString getSymlinkTarget | ( | const QString & | start_file, |
| QStringList * | intermediaries, | ||
| unsigned | maxLinks | ||
| ) |
Definition at line 452 of file mythmiscutil.cpp.
Referenced by CompleteJob(), MainServer::DeleteFile(), ProgramInfo::DiscoverRecordingDirectory(), MythMediaDevice::findMountPath(), MediaMonitor::MediaMonitor(), MythMediaDevice::MythMediaDevice(), and DeleteThread::ProcessNew().
◆ IsMACAddress()
| bool IsMACAddress | ( | const QString & | MAC | ) |
Definition at line 504 of file mythmiscutil.cpp.
Referenced by MythWakeup(), and Scheduler::WakeUpSlave().
◆ FileHash()
| QString FileHash | ( | const QString & | filename | ) |
Definition at line 549 of file mythmiscutil.cpp.
Referenced by V2Video::AddVideo(), Video::AddVideo(), RemoteFile::GetFileHash(), Content::GetHash(), V2Content::GetHash(), FileServerHandler::HandleQueryFileHash(), MainServer::HandleQueryFileHash(), UpdateHashes(), and VideoMetadata::VideoFileHash().
◆ WakeOnLAN()
| bool WakeOnLAN | ( | const QString & | MAC | ) |
Definition at line 590 of file mythmiscutil.cpp.
Referenced by MythWakeup(), and Scheduler::WakeUpSlave().
◆ MythWakeup()
Definition at line 631 of file mythmiscutil.cpp.
Referenced by MythCoreContext::ConnectCommandSocket(), MSqlDatabase::OpenDatabase(), and MythContextPrivate::TestDBconnection().
◆ IsPulseAudioRunning()
| bool IsPulseAudioRunning | ( | void | ) |
Is A/V Sync destruction daemon is running on this host?
Definition at line 639 of file mythmiscutil.cpp.
Referenced by AudioOutput::OpenAudio(), and PulseHandler::Suspend().
◆ myth_nice()
| bool myth_nice | ( | int | val | ) |
Definition at line 657 of file mythmiscutil.cpp.
Referenced by JobQueue::DoTranscodeThread(), JobQueue::DoUserJobThread(), MythSystemLegacyUnix::Fork(), MythPlayer::InitFrameInterval(), main(), and NuppelVideoRecorder::run().
◆ myth_yield()
| void myth_yield | ( | void | ) |
Definition at line 671 of file mythmiscutil.cpp.
◆ myth_ioprio()
| bool myth_ioprio | ( | int | ) |
Allows setting the I/O priority of the current process/thread.
range -1..8, smaller is higher priority
As of November 14th, 2010 this only works on Linux when using the CFQ I/O Scheduler. The range is -1 to 8, with -1 being real-time priority 0 through 7 being standard best-time priorities and 8 being the idle priority. The deadline and noop I/O Schedulers will ignore this but are much less likely to starve video playback to feed the transcoder or flagger. (noop is only recommended for SSDs.)
Since a process needs to have elevated priviledges to use either the real-time or idle priority this will try priorities 0 or 7 respectively if -1 or 8 do not work. It will not report an error on these conditions as they will be the common case.
Only Linux on i386, ppc, x86_64 and ia64 are currently supported. This is a no-op on all other architectures and platforms.
Definition at line 748 of file mythmiscutil.cpp.
Referenced by JobQueue::DoTranscodeThread(), JobQueue::DoUserJobThread(), MythSystemLegacyUnix::Fork(), and main().
◆ MythRemoveDirectory()
| bool MythRemoveDirectory | ( | QDir & | aDir | ) |
Definition at line 752 of file mythmiscutil.cpp.
Referenced by NativeArchive::doNativeArchive(), MythBurn::MythBurn(), MythRemoveDirectory(), MainServer::OpenAndUnlink(), and DeleteThread::ProcessNew().
◆ setHttpProxy()
| void setHttpProxy | ( | void | ) |
Get network proxy settings from OS, and use for [Q]Http[Comms].
The HTTP_PROXY environment var. is parsed for values like; "proxy-host", "proxy-host:8080", "http://host:8080" and "http"//user:password@host:1080", and that is used for any Qt-based Http fetches. We also test connectivity here with ping and telnet, and warn if it fails.
If there is was no env. var, we use Qt to get proxy settings from the OS, and search through them for a proxy server we can connect to.
Definition at line 796 of file mythmiscutil.cpp.
Referenced by main().
