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Issue #7544: Preallocate thread memory before creating the thread to avoid a

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fatal error in low memory condition.
This commit is contained in:
Victor Stinner 2010-03-03 23:20:25 +00:00
parent 2379bb664a
commit 71fb87e64c
4 changed files with 38 additions and 7 deletions
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28
Python/pystate.c
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@ -154,8 +154,8 @@ threadstate_getframe(PyThreadState *self)
return self->frame;
}
PyThreadState *
PyThreadState_New(PyInterpreterState *interp)
static PyThreadState *
new_threadstate(PyInterpreterState *interp, int init)
{
PyThreadState *tstate = (PyThreadState *)malloc(sizeof(PyThreadState));
@ -193,9 +193,8 @@ PyThreadState_New(PyInterpreterState *interp)
tstate->c_profileobj = NULL;
tstate->c_traceobj = NULL;
#ifdef WITH_THREAD
_PyGILState_NoteThreadState(tstate);
#endif
if (init)
_PyThreadState_Init(tstate);
HEAD_LOCK();
tstate->next = interp->tstate_head;
@ -206,6 +205,25 @@ PyThreadState_New(PyInterpreterState *interp)
return tstate;
}
PyThreadState *
PyThreadState_New(PyInterpreterState *interp)
{
return new_threadstate(interp, 1);
}
PyThreadState *
_PyThreadState_Prealloc(PyInterpreterState *interp)
{
return new_threadstate(interp, 0);
}
void
_PyThreadState_Init(PyThreadState *tstate)
{
#ifdef WITH_THREAD
_PyGILState_NoteThreadState(tstate);
#endif
}
void
PyThreadState_Clear(PyThreadState *tstate)