Create an object at a given address: Difference between revisions
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(→Tcl: Added implementation) |
m (→{{header|Tcl}}: make a bit easier to read, add comments) |
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{{libheader|critcl}} |
{{libheader|critcl}} |
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<lang tcl>package require critcl |
<lang tcl>package require critcl |
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# A command to 'make an integer object' and couple it to a Tcl variable |
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critcl::cproc linkvar {Tcl_Interp* interp char* var1} int { |
critcl::cproc linkvar {Tcl_Interp* interp char* var1} int { |
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int *intPtr = (int *) ckalloc(sizeof(int)); |
int *intPtr = (int *) ckalloc(sizeof(int)); |
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return (int) intPtr; |
return (int) intPtr; |
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} |
} |
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# A command to couple another Tcl variable to an 'integer object'; UNSAFE! |
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critcl::cproc linkagain(Tcl_Interp* interp int addr char* var2} void { |
critcl::cproc linkagain(Tcl_Interp* interp int addr char* var2} void { |
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int *intPtr = (int *) addr; |
int *intPtr = (int *) addr; |
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Tcl_LinkVar(interp, var2, (void *) intPtr, TCL_LINK_INT); |
Tcl_LinkVar(interp, var2, (void *) intPtr, TCL_LINK_INT); |
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} |
} |
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# Conventionally, programs that use critcl structure in packages |
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# This is used to prevent recompilation, especially on systems like Windows |
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package provide machAddrDemo 1</lang> |
package provide machAddrDemo 1</lang> |
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Demonstrating: |
Demonstrating: |
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