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bpo-33608: Factor out a private, per-interpreter _Py_AddPendingCall(). (GH-11617)

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This involves moving the global "pending calls" state to PyInterpreterState.

https://bugs.python.org/issue33608
This commit is contained in:
Eric Snow 2019-02-24 15:40:47 -08:00 • committed by GitHub
parent 463572c8be
commit ef4ac967e2
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GPG key ID: 4AEE18F83AFDEB23
10 changed files with 201 additions and 121 deletions
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2
Include/ceval.h
View file

@ -221,7 +221,7 @@ PyAPI_FUNC(Py_ssize_t) _PyEval_RequestCodeExtraIndex(freefunc);
#ifndef Py_LIMITED_API
PyAPI_FUNC(int) _PyEval_SliceIndex(PyObject *, Py_ssize_t *);
PyAPI_FUNC(int) _PyEval_SliceIndexNotNone(PyObject *, Py_ssize_t *);
PyAPI_FUNC(void) _PyEval_SignalAsyncExc(void);
PyAPI_FUNC(void) _PyEval_SignalAsyncExc(PyInterpreterState *);
#endif
/* Masks and values used by FORMAT_VALUE opcode. */

18
Include/internal/pycore_ceval.h
View file

@ -11,8 +11,12 @@ extern "C" {
#include "pycore_atomic.h"
#include "pythread.h"
struct _is; // See PyInterpreterState in cpython/pystate.h.
PyAPI_FUNC(int) _Py_AddPendingCall(struct _is*, unsigned long, int (*)(void *), void *);
PyAPI_FUNC(int) _Py_MakePendingCalls(struct _is*);
struct _pending_calls {
unsigned long main_thread;
PyThread_type_lock lock;
/* Request for running pending calls. */
_Py_atomic_int calls_to_do;
@ -22,6 +26,7 @@ struct _pending_calls {
int async_exc;
#define NPENDINGCALLS 32
struct {
unsigned long thread_id;
int (*func)(void *);
void *arg;
} calls[NPENDINGCALLS];
@ -29,6 +34,13 @@ struct _pending_calls {
int last;
};
struct _ceval_interpreter_state {
/* This single variable consolidates all requests to break out of
the fast path in the eval loop. */
_Py_atomic_int eval_breaker;
struct _pending_calls pending;
};
#include "pycore_gil.h"
struct _ceval_runtime_state {
@ -39,12 +51,8 @@ struct _ceval_runtime_state {
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;
/* Request for dropping the GIL */
_Py_atomic_int gil_drop_request;
struct _pending_calls pending;
/* Request for checking signals. */
_Py_atomic_int signals_pending;
struct _gil_runtime_state gil;

7
Include/internal/pycore_pystate.h
View file

@ -11,6 +11,7 @@ extern "C" {
#include "pystate.h"
#include "pythread.h"
#include "pycore_atomic.h"
#include "pycore_ceval.h"
#include "pycore_pathconfig.h"
#include "pycore_pymem.h"
@ -31,6 +32,8 @@ struct _is {
int64_t id_refcount;
PyThread_type_lock id_mutex;
int finalizing;
PyObject *modules;
PyObject *modules_by_index;
PyObject *sysdict;
@ -78,6 +81,8 @@ struct _is {
PyObject *pyexitmodule;
uint64_t tstate_next_unique_id;
struct _ceval_interpreter_state ceval;
};
PyAPI_FUNC(struct _is*) _PyInterpreterState_LookUpID(PY_INT64_T);
@ -207,6 +212,8 @@ typedef struct pyruntimestate {
struct _xidregitem *head;
} xidregistry;
unsigned long main_thread;
#define NEXITFUNCS 32
void (*exitfuncs[NEXITFUNCS])(void);
int nexitfuncs;