python · vstinner · Mar 9, 2020 · Mar 9, 2020
diff --git a/Include/internal/pycore_ceval.h b/Include/internal/pycore_ceval.h
@@ -53,6 +53,8 @@ extern PyObject *_PyEval_EvalCode(
    PyObject *kwdefs, PyObject *closure,
    PyObject *name, PyObject *qualname);

+extern PyStatus _PyEval_InitThreads(PyThreadState *tstate);
+
 #ifdef __cplusplus
 }
 #endif

diff --git a/Python/ceval.c b/Python/ceval.c
@@ -13,6 +13,7 @@
 #include "pycore_call.h"
 #include "pycore_ceval.h"
 #include "pycore_code.h"
+#include "pycore_initconfig.h"
 #include "pycore_object.h"
 #include "pycore_pyerrors.h"
 #include "pycore_pylifecycle.h"
@@ -214,26 +215,39 @@ PyEval_ThreadsInitialized(void)
    return gil_created(&runtime->ceval.gil);
 }

-void
-PyEval_InitThreads(void)
+PyStatus
+_PyEval_InitThreads(PyThreadState *tstate)
 {
-    _PyRuntimeState *runtime = &_PyRuntime;
-    struct _ceval_runtime_state *ceval = &runtime->ceval;
+    if (tstate == NULL) {
+        return _PyStatus_ERR("tstate is NULL");
+    }
+
+    struct _ceval_runtime_state *ceval = &tstate->interp->runtime->ceval;
    struct _gil_runtime_state *gil = &ceval->gil;
    if (gil_created(gil)) {
-        return;
+        return _PyStatus_OK();
    }

    PyThread_init_thread();
    create_gil(gil);
-    PyThreadState *tstate = _PyRuntimeState_GetThreadState(runtime);
-    ensure_tstate_not_null(__func__, tstate);
    take_gil(ceval, tstate);

    struct _pending_calls *pending = &ceval->pending;
    pending->lock = PyThread_allocate_lock();
    if (pending->lock == NULL) {
-        Py_FatalError("Can't initialize threads for pending calls");
+        return _PyStatus_NO_MEMORY();
+    }
+    return _PyStatus_OK();
+}
+
+void
+PyEval_InitThreads(void)
+{
+    PyThreadState *tstate = _PyThreadState_GET();
+
+    PyStatus status = _PyEval_InitThreads(tstate);
+    if (_PyStatus_EXCEPTION(status)) {
+        Py_ExitStatusException(status);
    }
 }


diff --git a/Python/pylifecycle.c b/Python/pylifecycle.c
@@ -554,7 +554,10 @@ pycore_create_interpreter(_PyRuntimeState *runtime,
    _PyGILState_Init(tstate);

    /* Create the GIL */
-    PyEval_InitThreads();
+    status = _PyEval_InitThreads(tstate);
+    if (_PyStatus_EXCEPTION(status)) {
+        return status;
+    }

    *tstate_p = tstate;
    return _PyStatus_OK();