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Diffstat (limited to 'include/python2.7/pystate.h')
| -rw-r--r-- | include/python2.7/pystate.h | 200 |
1 files changed, 200 insertions, 0 deletions
diff --git a/include/python2.7/pystate.h b/include/python2.7/pystate.h new file mode 100644 index 0000000..f2cfc30 --- /dev/null +++ b/include/python2.7/pystate.h @@ -0,0 +1,200 @@ + +/* Thread and interpreter state structures and their interfaces */ + + +#ifndef Py_PYSTATE_H +#define Py_PYSTATE_H +#ifdef __cplusplus +extern "C" { +#endif + +/* State shared between threads */ + +struct _ts; /* Forward */ +struct _is; /* Forward */ + +typedef struct _is { + + struct _is *next; + struct _ts *tstate_head; + + PyObject *modules; + PyObject *sysdict; + PyObject *builtins; + PyObject *modules_reloading; + + PyObject *codec_search_path; + PyObject *codec_search_cache; + PyObject *codec_error_registry; + +#ifdef HAVE_DLOPEN + int dlopenflags; +#endif +#ifdef WITH_TSC + int tscdump; +#endif + +} PyInterpreterState; + + +/* State unique per thread */ + +struct _frame; /* Avoid including frameobject.h */ + +/* Py_tracefunc return -1 when raising an exception, or 0 for success. */ +typedef int (*Py_tracefunc)(PyObject *, struct _frame *, int, PyObject *); + +/* The following values are used for 'what' for tracefunc functions: */ +#define PyTrace_CALL 0 +#define PyTrace_EXCEPTION 1 +#define PyTrace_LINE 2 +#define PyTrace_RETURN 3 +#define PyTrace_C_CALL 4 +#define PyTrace_C_EXCEPTION 5 +#define PyTrace_C_RETURN 6 + +typedef struct _ts { + /* See Python/ceval.c for comments explaining most fields */ + + struct _ts *next; + PyInterpreterState *interp; + + struct _frame *frame; + int recursion_depth; + /* 'tracing' keeps track of the execution depth when tracing/profiling. + This is to prevent the actual trace/profile code from being recorded in + the trace/profile. */ + int tracing; + int use_tracing; + + Py_tracefunc c_profilefunc; + Py_tracefunc c_tracefunc; + PyObject *c_profileobj; + PyObject *c_traceobj; + + PyObject *curexc_type; + PyObject *curexc_value; + PyObject *curexc_traceback; + + PyObject *exc_type; + PyObject *exc_value; + PyObject *exc_traceback; + + PyObject *dict; /* Stores per-thread state */ + + /* tick_counter is incremented whenever the check_interval ticker + * reaches zero. The purpose is to give a useful measure of the number + * of interpreted bytecode instructions in a given thread. This + * extremely lightweight statistic collector may be of interest to + * profilers (like psyco.jit()), although nothing in the core uses it. + */ + int tick_counter; + + int gilstate_counter; + + PyObject *async_exc; /* Asynchronous exception to raise */ + long thread_id; /* Thread id where this tstate was created */ + + int trash_delete_nesting; + PyObject *trash_delete_later; + + /* XXX signal handlers should also be here */ + +} PyThreadState; + + +PyAPI_FUNC(PyInterpreterState *) PyInterpreterState_New(void); +PyAPI_FUNC(void) PyInterpreterState_Clear(PyInterpreterState *); +PyAPI_FUNC(void) PyInterpreterState_Delete(PyInterpreterState *); + +PyAPI_FUNC(PyThreadState *) PyThreadState_New(PyInterpreterState *); +PyAPI_FUNC(PyThreadState *) _PyThreadState_Prealloc(PyInterpreterState *); +PyAPI_FUNC(void) _PyThreadState_Init(PyThreadState *); +PyAPI_FUNC(void) PyThreadState_Clear(PyThreadState *); +PyAPI_FUNC(void) PyThreadState_Delete(PyThreadState *); +#ifdef WITH_THREAD +PyAPI_FUNC(void) PyThreadState_DeleteCurrent(void); +#endif + +PyAPI_FUNC(PyThreadState *) PyThreadState_Get(void); +PyAPI_FUNC(PyThreadState *) PyThreadState_Swap(PyThreadState *); +PyAPI_FUNC(PyObject *) PyThreadState_GetDict(void); +PyAPI_FUNC(int) PyThreadState_SetAsyncExc(long, PyObject *); + + +/* Variable and macro for in-line access to current thread state */ + +PyAPI_DATA(PyThreadState *) _PyThreadState_Current; + +#ifdef Py_DEBUG +#define PyThreadState_GET() PyThreadState_Get() +#else +#define PyThreadState_GET() (_PyThreadState_Current) +#endif + +typedef + enum {PyGILState_LOCKED, PyGILState_UNLOCKED} + PyGILState_STATE; + +/* Ensure that the current thread is ready to call the Python + C API, regardless of the current state of Python, or of its + thread lock. This may be called as many times as desired + by a thread so long as each call is matched with a call to + PyGILState_Release(). In general, other thread-state APIs may + be used between _Ensure() and _Release() calls, so long as the + thread-state is restored to its previous state before the Release(). + For example, normal use of the Py_BEGIN_ALLOW_THREADS/ + Py_END_ALLOW_THREADS macros are acceptable. + + The return value is an opaque "handle" to the thread state when + PyGILState_Ensure() was called, and must be passed to + PyGILState_Release() to ensure Python is left in the same state. Even + though recursive calls are allowed, these handles can *not* be shared - + each unique call to PyGILState_Ensure must save the handle for its + call to PyGILState_Release. + + When the function returns, the current thread will hold the GIL. + + Failure is a fatal error. +*/ +PyAPI_FUNC(PyGILState_STATE) PyGILState_Ensure(void); + +/* Release any resources previously acquired. After this call, Python's + state will be the same as it was prior to the corresponding + PyGILState_Ensure() call (but generally this state will be unknown to + the caller, hence the use of the GILState API.) + + Every call to PyGILState_Ensure must be matched by a call to + PyGILState_Release on the same thread. +*/ +PyAPI_FUNC(void) PyGILState_Release(PyGILState_STATE); + +/* Helper/diagnostic function - get the current thread state for + this thread. May return NULL if no GILState API has been used + on the current thread. Note that the main thread always has such a + thread-state, even if no auto-thread-state call has been made + on the main thread. +*/ +PyAPI_FUNC(PyThreadState *) PyGILState_GetThisThreadState(void); + +/* The implementation of sys._current_frames() Returns a dict mapping + thread id to that thread's current frame. +*/ +PyAPI_FUNC(PyObject *) _PyThread_CurrentFrames(void); + +/* Routines for advanced debuggers, requested by David Beazley. + Don't use unless you know what you are doing! */ +PyAPI_FUNC(PyInterpreterState *) PyInterpreterState_Head(void); +PyAPI_FUNC(PyInterpreterState *) PyInterpreterState_Next(PyInterpreterState *); +PyAPI_FUNC(PyThreadState *) PyInterpreterState_ThreadHead(PyInterpreterState *); +PyAPI_FUNC(PyThreadState *) PyThreadState_Next(PyThreadState *); + +typedef struct _frame *(*PyThreadFrameGetter)(PyThreadState *self_); + +/* hook for PyEval_GetFrame(), requested for Psyco */ +PyAPI_DATA(PyThreadFrameGetter) _PyThreadState_GetFrame; + +#ifdef __cplusplus +} +#endif +#endif /* !Py_PYSTATE_H */ |