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https://github.com/johndoe6345789/typthon.git
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b198f511d2
Massive automated renaming of all Py_/PyObject/etc. prefixes to Ty_/TyObject/etc. This includes: - All public API types (TyObject, TyTypeObject, etc.) - All public API functions (Ty_Initialize, Ty_BuildValue, etc.) - All internal API (_Ty_ prefixes) - Reference counting macros (Ty_INCREF, Ty_DECREF, etc.) - Type flags (Ty_TPFLAGS_*) - Debug flags (Ty_DEBUG, Ty_TRACE_REFS, etc.) - All object type APIs (TyList_, TyDict_, TyUnicode_, etc.) This changes over 60,000 occurrences across 1000+ files. Co-authored-by: johndoe6345789 <224850594+johndoe6345789@users.noreply.github.com>
60 lines
1.6 KiB
C
60 lines
1.6 KiB
C
#ifndef Ty_HASH_H
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#define Ty_HASH_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* Cutoff for small string DJBX33A optimization in range [1, cutoff).
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*
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* About 50% of the strings in a typical Python application are smaller than
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* 6 to 7 chars. However DJBX33A is vulnerable to hash collision attacks.
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* NEVER use DJBX33A for long strings!
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*
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* A Ty_HASH_CUTOFF of 0 disables small string optimization. 32 bit platforms
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* should use a smaller cutoff because it is easier to create colliding
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* strings. A cutoff of 7 on 64bit platforms and 5 on 32bit platforms should
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* provide a decent safety margin.
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*/
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#ifndef Ty_HASH_CUTOFF
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# define Ty_HASH_CUTOFF 0
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#elif (Ty_HASH_CUTOFF > 7 || Ty_HASH_CUTOFF < 0)
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# error Ty_HASH_CUTOFF must in range 0...7.
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#endif /* Ty_HASH_CUTOFF */
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/* Hash algorithm selection
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*
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* The values for Ty_HASH_* are hard-coded in the
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* configure script.
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*
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* - FNV and SIPHASH* are available on all platforms and architectures.
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* - With EXTERNAL embedders can provide an alternative implementation with::
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*
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* PyHash_FuncDef PyHash_Func = {...};
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*
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* XXX: Figure out __declspec() for extern PyHash_FuncDef.
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*/
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#define Ty_HASH_EXTERNAL 0
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#define Ty_HASH_SIPHASH24 1
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#define Ty_HASH_FNV 2
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#define Ty_HASH_SIPHASH13 3
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#ifndef Ty_HASH_ALGORITHM
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# ifndef HAVE_ALIGNED_REQUIRED
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# define Ty_HASH_ALGORITHM Ty_HASH_SIPHASH13
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# else
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# define Ty_HASH_ALGORITHM Ty_HASH_FNV
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# endif /* uint64_t && uint32_t && aligned */
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#endif /* Ty_HASH_ALGORITHM */
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#ifndef Ty_LIMITED_API
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# define Ty_CPYTHON_HASH_H
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# include "cpython/pyhash.h"
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# undef Ty_CPYTHON_HASH_H
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif // !Ty_HASH_H
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