Tcl Source Code

.
If this variable exists, then the interpreter was compiled with and linked
to a debug-enabled C run-time.  This variable will only exist on Windows,
so extension writers can specify which package to load depending on the
C run-time library that is in use.  This is not an indication that this core
contains symbols.
.TP
\fBengine\fR
.
The name of the Tcl language implementation.  When the interpreter is first
created, this is always set to the string \fBTcl\fR.
.TP
\fBmachine\fR
.
The instruction set executed by this machine, such as
\fBintel\fR, \fBPPC\fR, \fB68k\fR, or \fBsun4m\fR.  On UNIX machines, this
is the value returned by \fBuname -m\fR.
.TP
\fBos\fR

    /*
     * TIP #59: Make embedded configuration information available.
     */

    TclInitEmbeddedConfigurationInformation(interp);

    /*
     * TIP #440: Declare the name of the script engine to be "Tcl".
     */

    Tcl_SetVar2(interp, "tcl_platform", "engine", "Tcl",
	    TCL_GLOBAL_ONLY);

    /*
     * Compute the byte order of this machine.
     */

    order.s = 1;
    Tcl_SetVar2(interp, "tcl_platform", "byteOrder",
	    ((order.c[0] == 1) ? "littleEndian" : "bigEndian"),

    variable ::tcl_platform

::tcltest::loadTestedCommands
catch [list package require -exact Tcltest [info patchlevel]]

testConstraint testCPUID [llength [info commands testcpuid]]

test platform-1.0 {tcl_platform(engine)} {
  set tcl_platform(engine)
} {Tcl}

test platform-1.1 {TclpSetVariables: tcl_platform} {
    interp create i
    i eval {catch {unset tcl_platform(debug)}}
    i eval {catch {unset tcl_platform(threaded)}}
    set result [i eval {lsort [array names tcl_platform]}]
    interp delete i
    set result
} {byteOrder machine os osVersion pathSeparator platform pointerSize user wordSize}
} {byteOrder engine machine os osVersion pathSeparator platform pointerSize user wordSize}

# Test assumes twos-complement arithmetic, which is true of virtually
# everything these days.  Note that this does *not* use wide(), and
# this is intentional since that could make Tcl's numbers wider than
# the machine-integer on some platforms...
test platform-2.1 {tcl_platform(wordSize) indicates size of native word} {
    set result [expr {int(1 << (8 * $tcl_platform(wordSize) - 1))}]

    set r [SafeEval {array names tcl_platform}]
    # If running a windows-debug shell, remove the "debug" element from r.
    if {[testConstraint win]} {
	set r [lsearch -all -inline -not -exact $r "debug"]
    }
    set r [lsearch -all -inline -not -exact $r "threaded"]
    lsort $r
} {byteOrder pathSeparator platform pointerSize wordSize}
} {byteOrder engine pathSeparator platform pointerSize wordSize}

# More test should be added to check that hostname, nameofexecutable, aren't
# leaking infos, but they still do...

# high level general test
test safe-7.1 {tests that everything works at high level} {
    set i [safe::interpCreate]