Low-level classes for o/s services. More...

Namespaces
	HexdumpImp
	A private scope used for the implementation details of G::hexdump and G::hex_dump.

	PublisherImp
	A private scope used in the implementation of G::Publisher and friends.

	Slot
	A typesafe callback library that isolates event sinks from event sources.

Classes
class	Arg
	A class which holds a represention of the argc/argv command line array, and supports simple command-line parsing. More...

class	Base64
	A base64 codec class. More...

class	bit_iterator
	A bit-by-bit input iterator that extracts bits in msb-to-lsb order from a sequence of bytes. More...

class	bit_stream
	A class for pulling integer values of various widths out of a bit stream. More...

class	Cleanup
	A static interface for registering cleanup functions that are called when the process terminates abnormally. More...

class	CleanupImp
	A pimple-pattern implementation class used by G::Cleanup. More...

class	Convert
	A static class which provides string encoding conversion functions. More...

class	ConvertImp
	A pimple-pattern implementation class for G::Convert. More...

class	Daemon
	A static interface for daemonising the calling process. More...

class	Date
	A date (dd/mm/yyyy) class. More...

class	EpochTime
	A subsecond-resolution timestamp based on a time_t. More...

class	DateTime
	A low-level static class used by Date and Time. More...

struct	threading
	Helper class for std::thread capabilities. More...

class	Directory
	An encapsulation of a file system directory that allows for iterating through the set of contained files. More...

class	DirectoryIterator
	A Directory iterator. More...

class	DirectoryList
	A Directory iterator with the same kind of interface as G::DirectoryIterator, but doing all file i/o in one go. More...

class	DirectoryIteratorImp
	A pimple-pattern implementation class for DirectoryIterator using opendir()/readdir(). More...

class	DirectoryTree
	A directory tree iterator for sorted, depth-first traversal of files and directories. More...

class	DirectoryTreeCallback
	A callback interface to allow G::DirectoryTree to ignore paths. More...

class	Environment
	A static class to wrap getenv() and putenv(). More...

class	Exception
	A general-purpose exception class derived from std::exception and containing a std::string. More...

class	Executable
	A structure representing an external program, holding a path and a set of arguments. More...

class	ExpGolomb
	Does exp-golomb decoding, as used in H.264 "ue(v)" syntax elements. More...

class	FatPipe
	A one-way, unreliable-datagram communication channel from a parent process to a child process, using shared memory. More...

class	FatPipeReceiver
	A class to read a fat pipe in the child process. More...

class	File
	A simple static class for dealing with files. More...

class	FileTree
	A class for walking files in a directory tree, with repositioning. More...

class	GetOpt
	A command line option parser. More...

class	Identity
	A combination of user-id and group-id, with a very low-level interface to the get/set/e/uid/gid functions. More...

class	IdentityUser
	A convenience class which, when used as a private base, can improve readability when calling Identity 'set' methods. More...

class	Item
	A variant class holding a string, an item map keyed by name, or an ordered list of items. More...

class	limits
	A scoping structure for a set of buffer sizes. More...

class	LocalSocketAddress
	An address class for G::LocalSocket that works with file system paths. More...

class	LocalSocket
	and accept()ing should be performed directly on the file descriptor. More...

class	Log
	A class for doing iostream-based logging. More...

class	LogOutput
	Controls and implements low-level logging output, as used by the Log interface. More...

class	MapFile
	A class for reading and editing key=value files, supporting the creation of backup files, variable expansion, character-set encoding and logging. More...

class	Md5
	MD5 message digest class. More...

class	Msg
	Wrappers for sendmsg() and recvmsg() that are near drop-in replacements for send()/sendto() and recv()/recvto(), but with SIGPIPE disabled and optional file-descriptor-passing capabilities. More...

class	NewProcess
	A class for creating new processes. More...

class	NewProcessWaitFuture
	A class that holds the parameters and the results of a waitpid() system call. More...

class	Pipe
	A private implementation class used by G::NewProcess that wraps a unix pipe. More...

class	NewProcessImp
	A pimple-pattern implementation class used by G::NewProcess. More...

class	noncopyable
	A noncopyable base class (a la boost). More...

class	OptionMap
	A map-like container for command-line options and their values. More...

class	OptionParser
	A parser for command-line arguments that operates according to an Options specification and returns an OptionValue multimap. More...

class	OptionsLevel
	Used by G::Options for extra type safety. More...

class	OptionsLayout
	Describes the layout for G::Options output. More...

class	Options
	A class to represent allowed command-line options and to provide command-line usage text. More...

class	OptionValue
	A simple structure encapsulating the value of a command-line option. More...

class	PathImp
	A private implementation class used by G::Path providing a set of static methods. More...

class	Path
	A Path object represents a file system path. More...

class	PidFile
	A class for creating pid files. More...

class	PublisherInfo
	A structure that holds diagnostic information for each G::Publisher slot. More...

class	Publisher
	A broadcast communication channel between unrelated processes using shared memory. More...

class	PublisherChannel
	A named publisher channel that can be subscribed to. More...

class	PublisherSubscriber
	A publication-channel subscriber endpoint. More...

class	PublisherSubscription
	An easy-to-use combination of a G::PublisherChannel object and a single G::PublisherSubscriber. More...

class	ReadWrite
	An abstract interface for reading and writing from a non-blocking i/o channel. More...

class	Root
	A class which acquires the process's special privileges on construction and releases them on destruction. More...

class	Semaphore
	A semaphore class with a posix or sysv implementation chosen at build-time. More...

class	SharedMemory
	A POSIX shared memory class. More...

class	SignalSafe
	An empty structure that is used to indicate a signal-safe, reentrant implementation. More...

class	Str
	A static class which provides string helper functions. More...

class	StringMapReader
	An adaptor for reading a const map<string,string> with at(key). More...

class	Test
	A static interface for enabling test features at run-time. More...

class	Time
	A simple time-of-day (hh/mm/ss) class. More...

class	Url
	A simple parser for URLs. More...

class	Process
	A static interface for doing things with processes. More...

Typedefs
typedef std::vector< std::string >	StringArray
	A std::vector of std::strings.

typedef std::map< std::string, std::string >	StringMap
	A std::map of std::strings.

Functions
template<typename T >
bit_stream< T > &	operator>> (bit_stream< T > &stream, bool &value)

template<typename T >
bit_stream< T > &	operator>> (bit_stream< T > &stream, unsigned char &value)

template<typename T >
bit_stream< T > &	operator>> (bit_stream< T > &stream, g_uint16_t &value)

template<typename T >
bit_stream< T > &	operator>> (bit_stream< T > &stream, g_uint32_t &value)

template<typename T >
bit_stream< T > &	operator>> (bit_stream< T > &stream, ExpGolomb::value< unsigned int > &value)

template<typename T >
bit_stream< T > &	operator>> (bit_stream< T > &stream, ExpGolomb::value< int > &value)

EpochTime	operator+ (EpochTime et, std::time_t s)

EpochTime	operator+ (EpochTime lhs, EpochTime rhs)

EpochTime	operator- (EpochTime big, EpochTime small_)

bool	operator< (EpochTime lhs, EpochTime rhs)

bool	operator== (EpochTime lhs, EpochTime rhs)

bool	operator!= (EpochTime lhs, EpochTime rhs)

bool	operator<= (EpochTime lhs, EpochTime rhs)

bool	operator>= (EpochTime lhs, EpochTime rhs)

bool	operator> (EpochTime lhs, EpochTime rhs)

std::ostream &	operator<< (std::ostream &s, const EpochTime &et)

bool	is_windows ()

bool	is_linux ()

bool	is_free_bsd ()

bool	is_open_bsd ()

bool	is_bsd ()

void	swap (DirectoryTree &a, DirectoryTree &b)

void	swap (FileTree &a, FileTree &b)

template<int N, typename T , typename Ttohex , typename Ttoprintable >
void	hex_dump (std::ostream &out, T begin, T end, unsigned int address_width, const char prefix, const char space, const char *bar, unsigned int width, Ttohex tohex, Ttoprintable toprintable)
	Performs a hex dump to the given stream. More...

template<int N, typename T >
void	hex_dump (std::ostream &out, T begin, T end, unsigned int address_width, const char prefix, const char space, const char *bar, unsigned int width)

template<int N, typename T >
void	hex_dump (std::ostream &out, T begin, T end, unsigned int address_width, const char prefix, const char space, const char *bar)

template<int N, typename T >
void	hex_dump (std::ostream &out, T begin, T end, unsigned int address_width)

template<int N, typename T >
void	hex_dump (std::ostream &out, T begin, T end)
	convenience overloads...

template<int N, typename T >
void	hex_dump (std::ostream &out, const T &str)

template<int N, typename T , typename Ttohex , typename Ttoprintable >
imp::hexdump_streamable< N, T, Ttohex, Ttoprintable >	hexdump (T begin, T end, unsigned int address_width, const char prefix, const char space, const char *bar, unsigned int width, Ttohex tohex, Ttoprintable toprintable)
	Returns a streamable object that does a hex dump. More...

template<int N, typename T >
imp::hexdump_streamable< N, T, typename imp::hexdump_tohex, typename imp::hexdump_toprintable >	hexdump (T begin, T end, unsigned int address_width, const char prefix, const char space, const char *bar, unsigned int width)

template<int N, typename T >
imp::hexdump_streamable< N, T, typename imp::hexdump_tohex, typename imp::hexdump_toprintable >	hexdump (T begin, T end, unsigned int address_width, const char prefix, const char space, const char *bar)

template<int N, typename T >
imp::hexdump_streamable< N, T, typename imp::hexdump_tohex, typename imp::hexdump_toprintable >	hexdump (T begin, T end, unsigned int address_width)

template<int N, typename T >
imp::hexdump_streamable< N, T, typename imp::hexdump_tohex, typename imp::hexdump_toprintable >	hexdump (T begin, T end)
	convenience overloads...

template<int N, typename T >
imp::hexdump_streamable< N, typename T::const_iterator, typename imp::hexdump_tohex, typename imp::hexdump_toprintable >	hexdump (const T &seq)

std::string	hostname ()
	Returns the hostname. More...

std::ostream &	operator<< (std::ostream &stream, const G::Identity &identity)

std::ostream &	operator<< (std::ostream &stream, const Item &item)

std::istream &	operator>> (std::istream &stream, Item &item)

std::ostream &	operator<< (std::ostream &stream, const Path &path)

Path &	operator+= (Path &p, const std::string &str)

Path	operator+ (const Path &p, const std::string &str)

void	swap (Path &p1, Path &p2)

template<int N>
imp::hexdump_streamable< N, Gr::Vectors, typename imp::hexdump_tohex, typename imp::hexdump_toprintable >	hexdump (const Gr::Vectors &v)

Detailed Description

Low-level classes for o/s services.

Key classes are:

Function Documentation

template<int N, typename T , typename Ttohex , typename Ttoprintable >

void G::hex_dump	(	std::ostream &	out,
		T	begin,
		T	end,
		unsigned int	address_width,
		const char *	prefix,
		const char *	space,
		const char *	bar,
		unsigned int	width,
		Ttohex	tohex,
		Ttoprintable	toprintable
	)

Performs a hex dump to the given stream.

Eg.

G::hex_dump<16>( std::cout , data.begin() , data.end() ) ;

defaulting overloads...

Definition at line 178 of file ghexdump.h.

template<int N, typename T , typename Ttohex , typename Ttoprintable >

imp::hexdump_streamable<N,T,Ttohex,Ttoprintable> G::hexdump	(	T	begin,
		T	end,
		unsigned int	address_width,
		const char *	prefix,
		const char *	space,
		const char *	bar,
		unsigned int	width,
		Ttohex	tohex,
		Ttoprintable	toprintable
	)

Returns a streamable object that does a hex dump.

Eg.

std::cout << G::hexdump<16>(data.begin(),data.end()) << std::endl ;

defaulting overloads...

Definition at line 240 of file ghexdump.h.

std::string G::hostname ( )

Returns the hostname.

This may or may not relate to the host's name on some network.

Definition at line 27 of file ghostname_unix.cpp.

Namespaces

Classes

Typedefs

Functions

Detailed Description

Function Documentation