1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
#ifndef Py_INTERNAL_PYSTATE_H
#define Py_INTERNAL_PYSTATE_H
#ifdef __cplusplus
extern "C" {
#endif
#ifndef Py_BUILD_CORE
# error "this header requires Py_BUILD_CORE define"
#endif
#include "pycore_runtime.h" /* PyRuntimeState */
/* Check if the current thread is the main thread.
Use _Py_IsMainInterpreter() to check if it's the main interpreter. */
static inline int
_Py_IsMainThread(void)
{
unsigned long thread = PyThread_get_thread_ident();
return (thread == _PyRuntime.main_thread);
}
static inline PyInterpreterState *
_PyInterpreterState_Main(void)
{
return _PyRuntime.interpreters.main;
}
static inline int
_Py_IsMainInterpreter(PyInterpreterState *interp)
{
return (interp == _PyInterpreterState_Main());
}
static inline int
_Py_IsMainInterpreterFinalizing(PyInterpreterState *interp)
{
/* bpo-39877: Access _PyRuntime directly rather than using
tstate->interp->runtime to support calls from Python daemon threads.
After Py_Finalize() has been called, tstate can be a dangling pointer:
point to PyThreadState freed memory. */
return (_PyRuntimeState_GetFinalizing(&_PyRuntime) != NULL &&
interp == &_PyRuntime._main_interpreter);
}
// Export for _xxsubinterpreters module.
PyAPI_FUNC(int) _PyInterpreterState_SetRunningMain(PyInterpreterState *);
PyAPI_FUNC(void) _PyInterpreterState_SetNotRunningMain(PyInterpreterState *);
PyAPI_FUNC(int) _PyInterpreterState_IsRunningMain(PyInterpreterState *);
static inline const PyConfig *
_Py_GetMainConfig(void)
{
PyInterpreterState *interp = _PyInterpreterState_Main();
if (interp == NULL) {
return NULL;
}
return _PyInterpreterState_GetConfig(interp);
}
/* Only handle signals on the main thread of the main interpreter. */
static inline int
_Py_ThreadCanHandleSignals(PyInterpreterState *interp)
{
return (_Py_IsMainThread() && _Py_IsMainInterpreter(interp));
}
/* Variable and static inline functions for in-line access to current thread
and interpreter state */
#if defined(HAVE_THREAD_LOCAL) && !defined(Py_BUILD_CORE_MODULE)
extern _Py_thread_local PyThreadState *_Py_tss_tstate;
#endif
PyAPI_DATA(PyThreadState *) _PyThreadState_GetCurrent(void);
#ifndef NDEBUG
extern int _PyThreadState_CheckConsistency(PyThreadState *tstate);
#endif
extern int _PyThreadState_MustExit(PyThreadState *tstate);
/* Get the current Python thread state.
This function is unsafe: it does not check for error and it can return NULL.
The caller must hold the GIL.
See also PyThreadState_Get() and _PyThreadState_UncheckedGet(). */
static inline PyThreadState*
_PyThreadState_GET(void)
{
#if defined(HAVE_THREAD_LOCAL) && !defined(Py_BUILD_CORE_MODULE)
return _Py_tss_tstate;
#else
return _PyThreadState_GetCurrent();
#endif
}
static inline void
_Py_EnsureFuncTstateNotNULL(const char *func, PyThreadState *tstate)
{
if (tstate == NULL) {
_Py_FatalErrorFunc(func,
"the function must be called with the GIL held, "
"after Python initialization and before Python finalization, "
"but the GIL is released (the current Python thread state is NULL)");
}
}
// Call Py_FatalError() if tstate is NULL
#define _Py_EnsureTstateNotNULL(tstate) \
_Py_EnsureFuncTstateNotNULL(__func__, (tstate))
/* Get the current interpreter state.
The function is unsafe: it does not check for error and it can return NULL.
The caller must hold the GIL.
See also _PyInterpreterState_Get()
and _PyGILState_GetInterpreterStateUnsafe(). */
static inline PyInterpreterState* _PyInterpreterState_GET(void) {
PyThreadState *tstate = _PyThreadState_GET();
#ifdef Py_DEBUG
_Py_EnsureTstateNotNULL(tstate);
#endif
return tstate->interp;
}
// PyThreadState functions
PyAPI_FUNC(PyThreadState *) _PyThreadState_New(PyInterpreterState *interp);
PyAPI_FUNC(void) _PyThreadState_Bind(PyThreadState *tstate);
// We keep this around exclusively for stable ABI compatibility.
PyAPI_FUNC(void) _PyThreadState_Init(
PyThreadState *tstate);
PyAPI_FUNC(void) _PyThreadState_DeleteExcept(PyThreadState *tstate);
/* Other */
PyAPI_FUNC(PyThreadState *) _PyThreadState_Swap(
_PyRuntimeState *runtime,
PyThreadState *newts);
PyAPI_FUNC(PyStatus) _PyInterpreterState_Enable(_PyRuntimeState *runtime);
#ifdef HAVE_FORK
extern PyStatus _PyInterpreterState_DeleteExceptMain(_PyRuntimeState *runtime);
extern void _PySignal_AfterFork(void);
#endif
PyAPI_FUNC(int) _PyCrossInterpreterData_ReleaseAndRawFree(_PyCrossInterpreterData *);
PyAPI_FUNC(int) _PyState_AddModule(
PyThreadState *tstate,
PyObject* module,
PyModuleDef* def);
PyAPI_FUNC(int) _PyOS_InterruptOccurred(PyThreadState *tstate);
#define HEAD_LOCK(runtime) \
PyThread_acquire_lock((runtime)->interpreters.mutex, WAIT_LOCK)
#define HEAD_UNLOCK(runtime) \
PyThread_release_lock((runtime)->interpreters.mutex)
#ifdef __cplusplus
}
#endif
#endif /* !Py_INTERNAL_PYSTATE_H */
|
