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* Fix memory leak in dict_to_map(), SF bug [ #485152 ] memory leak in test_scope.Jeremy Hylton2001-12-061-8/+11
| | | | | | | | | | | | PyCell_Set() incremenets the reference count, so the earlier XINCREF causes a leak. Also make a number of small performance improvements to the code on the assumption that most of the time variables are not rebound across a FastToLocals() / LocalsToFast() pair. Replace uses of PyCell_Set() and PyCell_Get() with PyCell_SET() and PyCell_GET(), since the frame is guaranteed to contain cells.
* Add optional docstrings to getset descriptors. Fortunately, there'sGuido van Rossum2001-09-201-1/+1
| | | | | | | | | | no backwards compatibility to worry about, so I just pushed the 'closure' struct member to the back -- it's never used in the current code base (I may eliminate it, but that's more work because the getter and setter signatures would have to change.) As examples, I added actual docstrings to the getset attributes of a few types: file.closed, xxsubtype.spamdict.state.
* Add optional docstrings to member descriptors. For backwardsGuido van Rossum2001-09-201-1/+1
| | | | | | | | | | | | | | | compatibility, this required all places where an array of "struct memberlist" structures was declared that is referenced from a type's tp_members slot to change the type of the structure to PyMemberDef; "struct memberlist" is now only used by old code that still calls PyMember_Get/Set. The code in PyObject_GenericGetAttr/SetAttr now calls the new APIs PyMember_GetOne/SetOne, which take a PyMemberDef argument. As examples, I added actual docstrings to the attributes of a few types: file, complex, instance method, super, and xxsubtype.spamlist. Also converted the symtable to new style getattr.
* Squash new compiler wng in debug build.Tim Peters2001-08-301-1/+1
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* Make frames a PyVarObject. Use new GC API.Neil Schemenauer2001-08-291-30/+14
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* Merge of descr-branch back into trunk.Tim Peters2001-08-021-14/+21
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* GC for frame objects.Neil Schemenauer2001-07-121-12/+101
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* PyFrameObject: rename f_stackbottom to f_stacktop, since it points toTim Peters2001-06-231-3/+5
| | | | | | | | the next free valuestack slot, not to the base (in America, stacks push and pop at the top -- they mutate at the bottom in Australia <winK>). eval_frame(): assert that f_stacktop isn't NULL upon entry. frame_delloc(): avoid ordered pointer comparisons involving f_stacktop when f_stacktop is NULL.
* Merging the gen-branch into the main line, at Guido's direction. Yay!Tim Peters2001-06-181-0/+6
| | | | | Bugfix candidate in inspect.py: it was referencing "self" outside of a method.
* SF patch 419176 from MvL; fixed bug 418977Jeremy Hylton2001-05-081-6/+3
| | | | Two errors in dict_to_map() helper used by PyFrame_LocalsToFast().
* Make one more private symbol static.Guido van Rossum2001-04-141-1/+1
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* Make some private symbols static.Guido van Rossum2001-04-141-1/+1
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* Fix PyFrame_FastToLocals() and counterpart to deal with cells andJeremy Hylton2001-03-211-20/+68
| | | | | | | | | | | | | | frees. Note there doesn't seem to be any way to test LocalsToFast(), because the instructions that trigger it are illegal in nested scopes with free variables. Fix allocation strategy for cells that are also formal parameters. Instead of emitting LOAD_FAST / STORE_DEREF pairs for each parameter, have the argument handling code in eval_code2() do the right thing. A side-effect of this change is that cell variables that are also arguments are listed at the front of co_cellvars in the order they appear in the argument list.
* Variety of small INC/DECREF patches that fix reported memory leaksJeremy Hylton2001-03-131-3/+4
| | | | | | | | | | | | | | | | | | | | | with free variables. Thanks to Martin v. Loewis for finding two of the problems. This fixes SF buf 405583. There is also a C API change: PyFrame_New() is reverting to its pre-2.1 signature. The change introduced by nested scopes was a mistake. XXX Is this okay between beta releases? cell_clear(), the GC helper, must decref its reference to break cycles. frame_dealloc() must dealloc all cell vars and free vars in addition to locals. eval_code2() setup code must INCREF cells it copies out of the closure. The STORE_DEREF opcode implementation must DECREF the object it passes to PyCell_Set().
* Remove f_closure slot of frameobject and use f_localsplus instead.Jeremy Hylton2001-01-291-23/+14
| | | | | | | | | | | | This change eliminates an extra malloc/free when a frame with free variables is created. Any cell vars or free vars are stored in f_localsplus after the locals and before the stack. eval_code2() fills in the appropriate values after handling initialization of locals. To track the size the frame has an f_size member that tracks the total size of f_localsplus. It used to be implicitly f_nlocals + f_stacksize.
* PEP 227 implementationJeremy Hylton2001-01-251-3/+21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The majority of the changes are in the compiler. The mainloop changes primarily to implement the new opcodes and to pass a function's closure to eval_code2(). Frames and functions got new slots to hold the closure. Include/compile.h Add co_freevars and co_cellvars slots to code objects. Update PyCode_New() to take freevars and cellvars as arguments Include/funcobject.h Add func_closure slot to function objects. Add GetClosure()/SetClosure() functions (and corresponding macros) for getting at the closure. Include/frameobject.h PyFrame_New() now takes a closure. Include/opcode.h Add four new opcodes: MAKE_CLOSURE, LOAD_CLOSURE, LOAD_DEREF, STORE_DEREF. Remove comment about old requirement for opcodes to fit in 7 bits. compile.c Implement changes to code objects for co_freevars and co_cellvars. Modify symbol table to use st_cur_name (string object for the name of the current scope) and st_cur_children (list of nested blocks). Also define st_nested, which might more properly be called st_cur_nested. Add several DEF_XXX flags to track def-use information for free variables. New or modified functions of note: com_make_closure(struct compiling *, PyCodeObject *) Emit LOAD_CLOSURE opcodes as needed to pass cells for free variables into nested scope. com_addop_varname(struct compiling *, int, char *) Emits opcodes for LOAD_DEREF and STORE_DEREF. get_ref_type(struct compiling *, char *name) Return NAME_CLOSURE if ref type is FREE or CELL symtable_load_symbols(struct compiling *) Decides what variables are cell or free based on def-use info. Can now raise SyntaxError if nested scopes are mixed with exec or from blah import *. make_scope_info(PyObject *, PyObject *, int, int) Helper functions for symtable scope stack. symtable_update_free_vars(struct symtable *) After a code block has been analyzed, it must check each of its children for free variables that are not defined in the block. If a variable is free in a child and not defined in the parent, then it is defined by block the enclosing the current one or it is a global. This does the right logic. symtable_add_use() is now a macro for symtable_add_def() symtable_assign(struct symtable *, node *) Use goto instead of for (;;) Fixed bug in symtable where name of keyword argument in function call was treated as assignment in the scope of the call site. Ex: def f(): g(a=2) # a was considered a local of f ceval.c eval_code2() now take one more argument, a closure. Implement LOAD_CLOSURE, LOAD_DEREF, STORE_DEREF, MAKE_CLOSURE> Also: When name error occurs for global variable, report that the name was global in the error mesage. Objects/frameobject.c Initialize f_closure to be a tuple containing space for cellvars and freevars. f_closure is NULL if neither are present. Objects/funcobject.c Add support for func_closure. Python/import.c Change the magic number. Python/marshal.c Track changes to code objects.
* REMOVED all CWI, CNRI and BeOpen copyright markings.Guido van Rossum2000-09-011-9/+0
| | | | This should match the situation in the 1.6b1 tree.
* ANSI-fication of the sources.Fred Drake2000-07-091-27/+10
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* Change copyright notice - 2nd try.Guido van Rossum2000-06-301-6/+0
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* Change copyright notice.Guido van Rossum2000-06-301-21/+6
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* Vladimir Marangozov's long-awaited malloc restructuring.Guido van Rossum2000-05-031-9/+8
| | | | | | | | | | For more comments, read the patches@python.org archives. For documentation read the comments in mymalloc.h and objimpl.h. (This is not exactly what Vladimir posted to the patches list; I've made a few changes, and Vladimir sent me a fix in private email for a problem that only occurs in debug mode. I'm also holding back on his change to main.c, which seems unnecessary to me.)
* Christian Tismer's "trashcan" patch:Guido van Rossum2000-03-131-0/+2
| | | | | | | | Added wrapping macros to dictobject.c, listobject.c, tupleobject.c, frameobject.c, traceback.c that safely prevends core dumps on stack overflow. Macros and functions in object.c, object.h. The method is an "elevator destructor" that turns cascading deletes into tail recursive behavior when some limit is hit.
* The rest of the changes by Trent Mick and Dale Nagata for warning-freeGuido van Rossum2000-01-201-2/+2
| | | | compilation on NT Alpha. Mostly added casts etc.
* A Py_DECREF(f) is missing in PyFrame_New for the error case whenGuido van Rossum1998-10-191-4/+4
| | | | the `builtins' initialization fails. Vladimir Marangozov.
* In PyFrame_New(), don't set extras to something derived from codeGuido van Rossum1998-09-251-1/+2
| | | | | before code has been checked for validity. Discovered by Vladimir Marangozov.
* Since PyDict_GetItem() can't raise an exception any more, there's noGuido van Rossum1998-05-141-4/+1
| | | | need to cxall PyErr_Clear() when it returns NULL.
* Vladimir Marangozov' performance hack: copy f_builtins from ancestorGuido van Rossum1998-02-191-3/+14
| | | | | | | if the globals are the same. Also, when creating a dummy builtins dictionary, add "None" to it, just to be kind.
* Add cast to realloc/malloc call to shut up AIX compiler. (Vladimir Marangozov)Guido van Rossum1997-10-311-2/+3
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* Provide a dummy empty directory as f_builtins instead of failing, whenGuido van Rossum1997-08-051-7/+22
| | | | | | | no valid directory is passed in. This prevents __del__ to fail when invoked after __builtins__ has already been discarded. Also add PyFrame_Fini() to discard the cache of frames.
* Avoid function calls to access the current thread state and builtinsGuido van Rossum1997-08-021-4/+2
| | | | | -- the thread state is passed in as an argument and the builtins are a member thereof.
* Massive changes for separate thread state management.Guido van Rossum1997-05-051-2/+13
| | | | | All per-thread globals are moved into a struct which is manipulated separately.
* Quickly renamed.Guido van Rossum1997-04-291-100/+101
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* Remove a redundant XINCREF(value). This caused the reference count ofGuido van Rossum1997-04-031-1/+0
| | | | | all locals to be upped by one when `from <module> import <whatever>' was executed.
* Kill all local variables when the frame is deallocated (moved hereGuido van Rossum1997-02-141-1/+11
| | | | | | from ceval.c). Wrapped a long line.
* When a recycled frame has more local+stack slots than needed,Guido van Rossum1997-01-241-2/+4
| | | | | give the extra slots to the stack rather than than forgetting about them (this reduces the number of reallocs done).
* Bugfix: remove ref to fast before it's defined.Guido van Rossum1997-01-201-1/+1
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* Changes that appear to give another 12% speedup.Guido van Rossum1997-01-201-87/+55
| | | | | | | | | | | | Rather than allocating a list object for the fast locals and another (extensible one) for the value stack and allocating the block stack dynamically, allocate the block stack with a fixed size (CO_MAXBLOCKS from compile.h), and stick the locals and value stack at the end of the object (this is now possible since the stack size is known beforehand). Get rid of the owner field and the nvalues argument -- it is available in the code object, like nlocals. This requires small changes in ceval.c only.
* Intern the strings "__builtins__".Guido van Rossum1997-01-181-1/+1
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* Comment out extend_stack() -- it is no longer needed.Guido van Rossum1997-01-171-0/+2
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* Make gcc -Wall happyGuido van Rossum1996-12-051-1/+1
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* New permission notice, includes CNRI.Guido van Rossum1996-10-251-12/+19
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* better policy regarding NULL localsGuido van Rossum1995-07-261-9/+13
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* changes for keyword arguments and fast function call; added abstract.cGuido van Rossum1995-07-181-40/+62
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* Use mappinglookup instead of dictlookup for looking up __builtin__.Sjoerd Mullender1995-04-041-1/+7
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* different init for __builtins__Guido van Rossum1995-01-171-0/+2
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* add builtins handling and restricted flagGuido van Rossum1995-01-101-2/+14
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* Added 1995 to copyright message.Guido van Rossum1995-01-041-2/+2
| | | | | floatobject.c: fix hash(). methodobject.c: support METH_FREENAME flag bit.
* Lots of minor changes. Note for mappingobject.c: the hash table pointerGuido van Rossum1995-01-021-15/+13
| | | | can now be NULL.
* Merge back to main trunkGuido van Rossum1994-08-301-13/+98
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* * clmodule.c (doParams): free PVbuffer in error condition.Sjoerd Mullender1993-08-031-0/+1
| | | | | * frameobject.c (newframeobject): initialize ob_type if taking entry from the free list, since it is zeroed out when DEBUG is defined.
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