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bpo-45753: Interpreter internal tweaks (GH-29575)

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* Split exit paths into exceptional and non-exceptional.

* Move exit tracing code to individual bytecodes.

* Wrap all trace entry and exit events in macros to make them clearer and easier to enhance.

* Move return sequence into RETURN_VALUE, YIELD_VALUE and YIELD_FROM. Distinguish between normal trace events and dtrace events.
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Mark Shannon 2021-12-01 12:09:36 +00:00 • committed by GitHub
parent 0aa0bd0563
commit 49444fb807
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3 changed files with 214 additions and 153 deletions
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29
Include/internal/pycore_code.h
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@ -137,23 +137,24 @@ _GetSpecializedCacheEntryForInstruction(const _Py_CODEUNIT *first_instr, int nex
#define QUICKENING_INITIAL_WARMUP_VALUE (-QUICKENING_WARMUP_DELAY)
#define QUICKENING_WARMUP_COLDEST 1
static inline void
PyCodeObject_IncrementWarmup(PyCodeObject * co)
{
co->co_warmup++;
}
/* Used by the interpreter to determine when a code object should be quickened */
static inline int
PyCodeObject_IsWarmedUp(PyCodeObject * co)
{
return (co->co_warmup == 0);
}
int _Py_Quicken(PyCodeObject *code);
extern Py_ssize_t _Py_QuickenedCount;
/* Returns 1 if quickening occurs.
* -1 if an error occurs
* 0 otherwise */
static inline int
_Py_IncrementCountAndMaybeQuicken(PyCodeObject *code)
{
if (code->co_warmup != 0) {
code->co_warmup++;
if (code->co_warmup == 0) {
return _Py_Quicken(code) ? -1 : 1;
}
}
return 0;
}
extern Py_ssize_t _Py_QuickenedCount;
/* "Locals plus" for a code object is the set of locals + cell vars +
* free vars. This relates to variable names as well as offsets into