Staging
v0.8.1
v0.8.1
Revision 29e46a9a12592b89d81f87245b903486c589695a authored by Guido van Rossum on 02 August 1997, 02:56:48 UTC, committed by Guido van Rossum on 02 August 1997, 02:56:48 UTC
Introduce truly separate (sub)interpreter objects. For now, these
must be used by separate threads, created from C. See Demo/pysvr for
an example of how to use this. This also rationalizes Python's
initialization and finalization behavior:
Py_Initialize() -- initialize the whole interpreter
Py_Finalize() -- finalize the whole interpreter
tstate = Py_NewInterpreter() -- create a new (sub)interpreter
Py_EndInterpreter(tstate) -- delete a new (sub)interpreter
There are also new interfaces relating to threads and the interpreter
lock, which can be used to create new threads, and sometimes have to
be used to manipulate the interpreter lock when creating or deleting
sub-interpreters. These are only defined when WITH_THREAD is defined:
PyEval_AcquireLock() -- acquire the interpreter lock
PyEval_ReleaseLock() -- release the interpreter lock
PyEval_AcquireThread(tstate) -- acquire the lock and make the thread current
PyEval_ReleaseThread(tstate) -- release the lock and make NULL current
Other administrative changes:
- The header file bltinmodule.h is deleted.
- The init functions for Import, Sys and Builtin are now internal and
declared in pythonrun.h.
- Py_Setup() and Py_Cleanup() are no longer declared.
- The interpreter state and thread state structures are now linked
together in a chain (the chain of interpreters is a static variable
in pythonrun.c).
- Some members of the interpreter and thread structures have new,
shorter, more consistent, names.
- Added declarations for _PyImport_{Find,Fixup}Extension() to import.h.
1 parent 7a2d611
pystate.h
#ifndef Py_PYSTATE_H
#define Py_PYSTATE_H
#ifdef __cplusplus
extern "C" {
#endif
/***********************************************************
Copyright 1991-1995 by Stichting Mathematisch Centrum, Amsterdam,
The Netherlands.
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its
documentation for any purpose and without fee is hereby granted,
provided that the above copyright notice appear in all copies and that
both that copyright notice and this permission notice appear in
supporting documentation, and that the names of Stichting Mathematisch
Centrum or CWI or Corporation for National Research Initiatives or
CNRI not be used in advertising or publicity pertaining to
distribution of the software without specific, written prior
permission.
While CWI is the initial source for this software, a modified version
is made available by the Corporation for National Research Initiatives
(CNRI) at the Internet address ftp://ftp.python.org.
STICHTING MATHEMATISCH CENTRUM AND CNRI DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL STICHTING MATHEMATISCH
CENTRUM OR CNRI BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
******************************************************************/
/* Thread and interpreter state structures and their interfaces */
/* State shared between threads */
#define NEXITFUNCS 32
struct _ts; /* Forward */
struct _is; /* Forward */
typedef struct _is {
struct _is *next;
struct _ts *tstate_head;
PyObject *modules;
PyObject *sysdict;
PyObject *builtins;
int checkinterval;
} PyInterpreterState;
/* State unique per thread */
struct _frame; /* Avoid including frameobject.h */
typedef struct _ts {
struct _ts *next;
PyInterpreterState *interp;
struct _frame *frame;
int recursion_depth;
int ticker;
int tracing;
PyObject *sys_profilefunc;
PyObject *sys_tracefunc;
PyObject *curexc_type;
PyObject *curexc_value;
PyObject *curexc_traceback;
PyObject *exc_type;
PyObject *exc_value;
PyObject *exc_traceback;
/* XXX signal handlers should also be here */
} PyThreadState;
PyInterpreterState *PyInterpreterState_New Py_PROTO((void));
void PyInterpreterState_Clear Py_PROTO((PyInterpreterState *));
void PyInterpreterState_Delete Py_PROTO((PyInterpreterState *));
PyThreadState *PyThreadState_New Py_PROTO((PyInterpreterState *));
void PyThreadState_Clear Py_PROTO((PyThreadState *));
void PyThreadState_Delete Py_PROTO((PyThreadState *));
PyThreadState *PyThreadState_Get Py_PROTO((void));
PyThreadState *PyThreadState_Swap Py_PROTO((PyThreadState *));
#ifdef __cplusplus
}
#endif
#endif /* !Py_PYSTATE_H */
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