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gh-117657: Fix small issues with instrumentation and TSAN (#118064)

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Small TSAN fixups for instrumentation
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Dino Viehland 2024-04-30 11:38:05 -07:00 • committed by GitHub
parent 1f16b4ce56
commit 4a1cf66c5c
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GPG key ID: B5690EEEBB952194
7 changed files with 25 additions and 13 deletions
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9
Python/instrumentation.c
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@ -626,9 +626,10 @@ de_instrument(PyCodeObject *code, int i, int event)
return;
}
CHECK(_PyOpcode_Deopt[deinstrumented] == deinstrumented);
*opcode_ptr = deinstrumented;
FT_ATOMIC_STORE_UINT8_RELAXED(*opcode_ptr, deinstrumented);
if (_PyOpcode_Caches[deinstrumented]) {
instr[1].counter = adaptive_counter_warmup();
FT_ATOMIC_STORE_UINT16_RELAXED(instr[1].counter.as_counter,
adaptive_counter_warmup().as_counter);
}
}
@ -703,8 +704,10 @@ instrument(PyCodeObject *code, int i)
int deopt = _PyOpcode_Deopt[opcode];
int instrumented = INSTRUMENTED_OPCODES[deopt];
assert(instrumented);
*opcode_ptr = instrumented;
FT_ATOMIC_STORE_UINT8_RELAXED(*opcode_ptr, instrumented);
if (_PyOpcode_Caches[deopt]) {
FT_ATOMIC_STORE_UINT16_RELAXED(instr[1].counter.as_counter,
adaptive_counter_warmup().as_counter);
instr[1].counter = adaptive_counter_warmup();
}
}