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This replaces the former global variable PLy_curr_procedure, and provides a place to stash per-call-level information. In particular we create a per-call-level scratch memory context. For the moment, the scratch context is just used to avoid leaking memory from datatype output function calls in PLyDict_FromTuple. There probably will be more use-cases in future. Although this is a fix for a pre-existing memory leakage bug, it seems sufficiently invasive to not want to back-patch; it feels better as part of the major rearrangement of plpython code that we've already done as part of 9.2. Jan Urbański
49 lines
1.4 KiB
C
49 lines
1.4 KiB
C
/*
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* src/pl/plpython/plpy_procedure.h
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*/
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#ifndef PLPY_PROCEDURE_H
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#define PLPY_PROCEDURE_H
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#include "plpy_typeio.h"
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extern void init_procedure_caches(void);
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/* cached procedure data */
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typedef struct PLyProcedure
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{
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char *proname; /* SQL name of procedure */
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char *pyname; /* Python name of procedure */
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TransactionId fn_xmin;
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ItemPointerData fn_tid;
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bool fn_readonly;
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PLyTypeInfo result; /* also used to store info for trigger tuple
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* type */
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bool is_setof; /* true, if procedure returns result set */
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PyObject *setof; /* contents of result set. */
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char *src; /* textual procedure code, after mangling */
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char **argnames; /* Argument names */
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PLyTypeInfo args[FUNC_MAX_ARGS];
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int nargs;
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PyObject *code; /* compiled procedure code */
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PyObject *statics; /* data saved across calls, local scope */
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PyObject *globals; /* data saved across calls, global scope */
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} PLyProcedure;
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/* the procedure cache entry */
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typedef struct PLyProcedureEntry
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{
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Oid fn_oid; /* hash key */
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PLyProcedure *proc;
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} PLyProcedureEntry;
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/* PLyProcedure manipulation */
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extern char *PLy_procedure_name(PLyProcedure *proc);
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extern PLyProcedure *PLy_procedure_get(Oid fn_oid, bool is_trigger);
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extern void PLy_procedure_compile(PLyProcedure *proc, const char *src);
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extern void PLy_procedure_delete(PLyProcedure *proc);
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#endif /* PLPY_PROCEDURE_H */
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