EXTENSION

Guide for new feature and extension came from amorita branch
SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Extension

* Dynamic Shared Object Loading Feature
 o DynamicLink[fname_String, openmode___]
    Link shared object.
    Return id_Real if succeed and return $Failed if failed.

    `openmode' option values
   DYNL$LAZY:	Each external function reference is resolved
		when the function is first called.

   DYNL$NOW:	All external function references are bound immediately
		by DynamicLink[].

   DYNL$GLOBAL:	Symbols from this shared object and its directed acyclic
		graph (DAG) of needed objects will be available for
		resolving undefined references from all other shared objects.
   DYNL$LOCAL:	Symbols in this shared object and its DAG of needed objects
		will be available for resolving undefined references only
		from other objects in the same DAG.  This is the default,
		but it may be specified explicitly with this flag.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/DynamicLink

 o DynamicUnlink[id_Real]
    Unlink shared object.
    Return True if succeed and return False if failed.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/DynamicLink

 o DynamicCall[id_Real, symbol_String, argv___]
    Call Function symbol `symbol' in shared object handled by `id'
    as (isp1,itx,iax,vx,irtc) style SADScript interpreter function
    with `argv' SADScript stack.
    If prototype called function is (*)(void), DynamicCall returns Null.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/DynamicLink

* Network Host Entry Query
 o GetHostAddrByName[host_String]
    Get network address list of network hostname(host)
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/GetHostAddrByName

 o GetHostNameByAddr[addr_String]
    Get network hostname of network address(addr)
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/GetHostAddrByName

 o GetHostByAddr[addr_String] := GetHostNameByAddr[addr];
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/GetHostAddrByName

* Unix Path Handling
 o ExpandTilde[path_String]
    Resolve first `~' character of path.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/ExpandTilde

 o RealPath[path_String]
    Resolve first `~' character of path, all symbolic links,
    extra ``/'' characters and references to /./ and /../ in path.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/RealPath

 o MkSecureTemp[]
    Make a temporary file without racing and returns the path
    to the created temporary file.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/MkSecureTemp

* Inter process communication
 o Pipe[]
    Create a pipe object for IPC.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Pipe

* Stream handling
 o SetLUN2FD[lun_Real, fd_Real]
    Connect the stream given by the logical unit number(lun)
    to file descriptor(fd).
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/SetLUN2FD

* Process Control
 o BidirectionalPipe[file_String, {argv___String}, options___Rule|RuleDelayed]
    Invoke piped child process pointer by file
    with given argument(argv).
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/BidirectionalPipe

 o ReExec[]
    Re-execute current SAD interpreter
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/ReExec

 o Execve[path_String, {argv___String}, envlist_List, options___Rule]
    Replace current process by invoking new program located by path
    with given argument(argv) and environments(envlist).
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Execve

 o Execvpe[file_String, {argv___String}, envlist_List, options___Rule]
    Replace current process by invoking new program pointed by file
    with given argument(argv) and environments(envlist).
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Exec

 o Execvp[file_String, {argv___String}, options___Rule]
    Replace current process by invoking new program pointed by file
    with given argument(argv).
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Exec

 o Kill[pid_Real, sig_Real]
    Send the signal given by sig to pid, a process or a group of processes.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Kill

 o Wait4[]
    Provide a more general interface for programs that need to wait
    for certain child processes, that need resource utilization
    statistics accumulated by child processes, or that require options.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Wait4

 o Exit[status_Real]
    Perform normal program termination and return status
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Exit

 o SigPending[]
    Get pending signals
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/SigPending

 o SigSuspend[signals___]
    Atomically release blocked signals and wait for intrrupt
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/SigSuspend

 o SigProcMask[act:Set|Block|UnBlock, signals___]
    Manipulate current signal mask
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/SigProcMask

 o SigAction[signo_Real, options___]
    Manipulate signal handler
   SigAction$[sinal_Real, Action->Ignore|Default|_Real|"0xXXXXXXX",
	      Mask->{signals___Real}|AllSignals, Flag->{flags___Real}];

 o GetPID[],GetPPIDD[],GetUID[],GETEUID[],GetGID[],GetEGID[]
    Get PID,PPID,UID,EUID,GID and EGID of process.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/GetPID

 o Environments[]
    Get all environment variables as a list form; {"name=val", ...}.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Environments

 o GetEnv[name_String]
    Get the environment variable `name'.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Environments

 o SetEnv[name_String, val_String]
    Set the given string `val' to the environment variable `name'.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Environments

 o UnsetEnv[name_String]
    Destruct the environment variable `name'.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Environments

* Pseudo random number generator
 o ListRandom[]
    Get available PRNG plugin names.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/ListRandom

 o SeedRandom[]
    Get or set PRNG internal state.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/SeedRandom

 o Random[](Uniform/Gauss/ParabolaRandom)
    Generate pseudo random numbers.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/Random

* Symbol manipulation
 o BoundQ[sym_Symbol], FBoundQ[sym_Symbol]
    Query that the given symbol sym is bound or not.
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/BoundQ

* Information
 o BuildInfo[]
    Query build/configuration information
  SEE ALSO:	http://jyurai.ddo.jp/~amroita/SAD/?Core/BuildInfo

 o FeatureQ[]
    Query feature version
  SEE ALSO:	http://jyurai.ddo.jp/~amroita/SAD/?Core/FeatureQ

* Variabls
 o FFS$InterruptMask
    Tkinter event mask for internal Update[] call
  SEE ALSO:	http://jyurai.ddo.jp/~amorita/SAD/?Core/FFS$InterruptMask

 o $MessageLast
    Last message
  SEE ALSO:	http://jyurai.ddo.jp/~amroita/SAD/?Core/$MessageLast

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