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GH-103082: Implementation of PEP 669: Low Impact Monitoring for CPython (GH-103083)

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* The majority of the monitoring code is in instrumentation.c

* The new instrumentation bytecodes are in bytecodes.c

* legacy_tracing.c adapts the new API to the old sys.setrace and sys.setprofile APIs
This commit is contained in:
Mark Shannon 2023-04-12 12:04:55 +01:00 • committed by GitHub
parent dce2d38cb0
commit 411b169281
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GPG key ID: 4AEE18F83AFDEB23
44 changed files with 6029 additions and 1625 deletions
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8
Python/specialize.c
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@ -273,7 +273,8 @@ _PyCode_Quicken(PyCodeObject *code)
_Py_CODEUNIT *instructions = _PyCode_CODE(code);
for (int i = 0; i < Py_SIZE(code); i++) {
int previous_opcode = opcode;
opcode = _PyOpcode_Deopt[instructions[i].op.code];
opcode = _Py_GetBaseOpcode(code, i);
assert(opcode < MIN_INSTRUMENTED_OPCODE);
int caches = _PyOpcode_Caches[opcode];
if (caches) {
instructions[i + 1].cache = adaptive_counter_warmup();
@ -1737,6 +1738,7 @@ _Py_Specialize_Call(PyObject *callable, _Py_CODEUNIT *instr, int nargs,
{
assert(ENABLE_SPECIALIZATION);
assert(_PyOpcode_Caches[CALL] == INLINE_CACHE_ENTRIES_CALL);
assert(_Py_OPCODE(*instr) != INSTRUMENTED_CALL);
_PyCallCache *cache = (_PyCallCache *)(instr + 1);
int fail;
if (PyCFunction_CheckExact(callable)) {
@ -2149,7 +2151,9 @@ _Py_Specialize_ForIter(PyObject *iter, _Py_CODEUNIT *instr, int oparg)
goto success;
}
else if (tp == &PyGen_Type && oparg <= SHRT_MAX) {
assert(instr[oparg + INLINE_CACHE_ENTRIES_FOR_ITER + 1].op.code == END_FOR);
assert(instr[oparg + INLINE_CACHE_ENTRIES_FOR_ITER + 1].op.code == END_FOR ||
instr[oparg + INLINE_CACHE_ENTRIES_FOR_ITER + 1].op.code == INSTRUMENTED_END_FOR
);
instr->op.code = FOR_ITER_GEN;
goto success;
}