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bpo-22257: Small changes for PEP 432. (#1728)

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PEP 432 specifies a number of large changes to interpreter startup code, including exposing a cleaner C-API. The major changes depend on a number of smaller changes. This patch includes all those smaller changes.
This commit is contained in:
Eric Snow 2017-05-22 21:36:03 -07:00 • committed by GitHub
parent f9169ce6b4
commit 6b4be195cd
19 changed files with 2221 additions and 2006 deletions
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16
Python/pystate.c
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@ -46,6 +46,7 @@ static PyThread_type_lock head_mutex = NULL; /* Protects interp->tstate_head */
/* The single PyInterpreterState used by this process'
GILState implementation
*/
/* TODO: Given interp_main, it may be possible to kill this ref */
static PyInterpreterState *autoInterpreterState = NULL;
static int autoTLSkey = -1;
#else
@ -55,6 +56,7 @@ static int autoTLSkey = -1;
#endif
static PyInterpreterState *interp_head = NULL;
static PyInterpreterState *interp_main = NULL;
/* Assuming the current thread holds the GIL, this is the
PyThreadState for the current thread. */
@ -119,6 +121,9 @@ PyInterpreterState_New(void)
HEAD_LOCK();
interp->next = interp_head;
if (interp_main == NULL) {
interp_main = interp;
}
interp_head = interp;
if (_next_interp_id < 0) {
/* overflow or Py_Initialize() not called! */
@ -185,6 +190,11 @@ PyInterpreterState_Delete(PyInterpreterState *interp)
if (interp->tstate_head != NULL)
Py_FatalError("PyInterpreterState_Delete: remaining threads");
*p = interp->next;
if (interp_main == interp) {
interp_main = NULL;
if (interp_head != NULL)
Py_FatalError("PyInterpreterState_Delete: remaining subinterpreters");
}
HEAD_UNLOCK();
PyMem_RawFree(interp);
#ifdef WITH_THREAD
@ -661,6 +671,12 @@ PyInterpreterState_Head(void)
return interp_head;
}
PyInterpreterState *
PyInterpreterState_Main(void)
{
return interp_main;
}
PyInterpreterState *
PyInterpreterState_Next(PyInterpreterState *interp) {
return interp->next;