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bpo-39984: Add PyInterpreterState.ceval (GH-19047)

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subinterpreters: Move _PyRuntimeState.ceval.tracing_possible to
PyInterpreterState.ceval.tracing_possible: each interpreter now has
its own variable.

Changes:

* Add _ceval_state structure.
* Add PyInterpreterState.ceval field.
* _PyEval_EvalFrameDefault(): add ceval2 variable (struct _ceval_state*).
* Rename _PyEval_Initialize() to _PyEval_InitRuntimeState().
* Add _PyEval_InitState().
* Don't export internal _Py_FinishPendingCalls() and
  _PyEval_FiniThreads() functions anymore.
This commit is contained in:
Victor Stinner 2020-03-17 18:56:44 +01:00 • committed by GitHub
parent 514c469719
commit dab8423d22
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GPG key ID: 4AEE18F83AFDEB23
5 changed files with 35 additions and 19 deletions
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7
Include/internal/pycore_ceval.h
View file

@ -15,9 +15,10 @@ struct _frame;
#include "pycore_pystate.h" /* PyInterpreterState.eval_frame */
PyAPI_FUNC(void) _Py_FinishPendingCalls(PyThreadState *tstate);
PyAPI_FUNC(void) _PyEval_Initialize(struct _ceval_runtime_state *);
PyAPI_FUNC(void) _PyEval_FiniThreads(
extern void _Py_FinishPendingCalls(PyThreadState *tstate);
extern void _PyEval_InitRuntimeState(struct _ceval_runtime_state *);
extern void _PyEval_InitState(struct _ceval_state *);
extern void _PyEval_FiniThreads(
struct _ceval_runtime_state *ceval);
PyAPI_FUNC(void) _PyEval_SignalReceived(
struct _ceval_runtime_state *ceval);

16
Include/internal/pycore_pystate.h
View file

@ -35,12 +35,6 @@ struct _pending_calls {
struct _ceval_runtime_state {
int recursion_limit;
/* Records whether tracing is on for any thread. Counts the number
of threads for which tstate->c_tracefunc is non-NULL, so if the
value is 0, we know we don't have to check this thread's
c_tracefunc. This speeds up the if statement in
PyEval_EvalFrameEx() after fast_next_opcode. */
int tracing_possible;
/* This single variable consolidates all requests to break out of
the fast path in the eval loop. */
_Py_atomic_int eval_breaker;
@ -52,6 +46,15 @@ struct _ceval_runtime_state {
struct _gil_runtime_state gil;
};
struct _ceval_state {
/* Records whether tracing is on for any thread. Counts the number
of threads for which tstate->c_tracefunc is non-NULL, so if the
value is 0, we know we don't have to check this thread's
c_tracefunc. This speeds up the if statement in
_PyEval_EvalFrameDefault() after fast_next_opcode. */
int tracing_possible;
};
/* interpreter state */
#define _PY_NSMALLPOSINTS 257
@ -75,6 +78,7 @@ struct _is {
int finalizing;
struct _ceval_state ceval;
struct _gc_runtime_state gc;
PyObject *modules;