nsfStack.c

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* The newest trunk version of Tcl in fossil has TclStackFree() and TclStackAlloc() removed We had to substitute this functions. Unfortunately, the lifetime of the strack structures has changed, so we had shuffle some interals around.

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DTrace: * added "nsf::configure dtrace on|off" for skipping package initialization (to be handled in D script) * make compliation clean

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- dtrace improvements: * track objects in method invocations * trace result codes in method-return * add some dtrace sample scripts

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- first steps towards DTRACE support

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- cleanup and documentation of nsf-specific interp state - nsf::configure: added an option "profile on|off" (per default off)

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- added profile support for nsf::proc

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- nx.tcl: provide caching for computed values of object slots to make method objectparameter nearly twice as fast; direct changes on slots require a reconfigure call. - nsf.c: removed SUBST from shadow commands (does not appear to be necessary any more) - nsf.c: fixing a memory leak (some substituted values were not freed correctly) - nsf.c: fix potential crash for epoched cmds - some minor updates for profiling support

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Merge branch '2.0.0-develop' of ssh://alice.wu-wien.ac.at/usr/local/src/git-repo/xotcl into 2.0.0-develop

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- nsfStack.c: provide hook to obtain callers information in profiling code

Adding buffer-local emacs settings to the *.c files

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- reanimated NSF_PROFILE

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- nsf.c: changed handling of cmdPtrs in callstack content. * we use now explicit reference counting using NsfCommandPreserve/NsfCommandRelease * as a consequence, we do not need the following functions Nsf_DeleteCommandFromToken() and CallStackClearCmdReferences() any more. * the flag NSF_CSC_OBJECT_ACTIVATED is not needed anymore and was removed

- removed a small memory leak when a destroy method of an object o

deletes its grandparents namespace, containing also this class of o

(and its methods). Significantly eased by the change above.

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- new function Nsf_NextHashEntry() simular Tcl_NextHashEntry(), but handles triggered hash entry deletions - fixed reference count in AliasDeleteObjectReference()

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- minor cleanup

- fixed potential access to freed memory (actually when checking if namespace was removed by Tcl); found this problem when compiling Tcl with SYSTEM_MALLOC (own modified version of tclThreadAlloc.c) - fixed memory leak (namespace names and structures)

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- defined UNUSED macro to get more checking on unused arguments

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- removed leftover -public flag in nsf::method - general cleanup: removed unused arguments

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- removed unneded functions: NsfComputePrecedence(), NsfComputeDependents(), Nsf_SetVar2Ex(), NsfOSetInstVar(), Nsf_ObjGetVar2(), NsfOGetInstVar(), qNsfCreateObject() - removed unneeded external declarations: NsfClassListAdd() NsfClassListFree() - make extern declarations explicit - grouped most extern definitions together - improved documentation - moved variable declarations to inner scopes - removed warning from cppcheck()

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- follow Tcl nameing convention (uppercase functions)

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- perform relation handling in objectparameters outside of object-frame

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- show "unwind unstacked entry" message appear only when debug level>0 - removed fixed TODO entries

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- activated SKIP_LAMBDA in nsfCallstack. As a consequence, we disallow resolving self/my ... from tcl-proc frames (use uplevel if necessary, avoid "namespace eval")

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- impoved NsColonVarResolver, made some assumptions explicit

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- fixed scoping issue, when "-volatile" was used for object creation - added regression test for interaction between filters and function resolver (and volatile) - reactivated new volatile test in destroy.test - undone temporary fixes for volatile in serializer and nx.tcl

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- changed CallStackGetActiveProcFrame() to return also CMETHD frames This allows to execute :volatile in a initcmd and to delete the object at its end. As a consequence, code like [CopyHandler new -volatile] copy [::nsf::self] $newName has to be changed to CopyHandler new { :copy [:uplevel ::nsf::self] [uplevel set newName] :destroy } - renamed CallStackUseActiveFrames() to CallStackUseActiveFrame() and ctx->framesSaved to ctx->frameSaved to reflect implementation

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- removed debugging from CscFinish when compiled without DEVELOPMENT

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- fixed bug when calling aliased proc not via method interface - fixed bug when calling destroy in initcmd

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- added a few more small optimization. - code-generator: don't call argument parser, when no arguments are specified

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- removed bug-alert from nx.tcl (wrong false-positives for compiled locals in slots) - added a few small optimization. nsf appears to run on the shootout benchmark the same speed like a year ago (which much less functionality)

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- make exit more silent, when not debugging