Remove obsolete pthread_getattr_np workaround

Author: lpyu001

Python/ceval.c

@@ -65,64 +65,6 @@ _Py_ReachedRecursionLimitWithMargin(PyThreadState *tstate, int margin_count)
 #  define Py_C_STACK_SIZE 4000000
 #endif
 
-#if defined(__EMSCRIPTEN__)
-
-// Temporary workaround to make `pthread_getattr_np` work on Emscripten.
-// Emscripten 4.0.6 will contain a fix:
-// https://github.com/emscripten-core/emscripten/pull/23887
-
-#include "emscripten/stack.h"
-
-#define pthread_attr_t workaround_pthread_attr_t
-#define pthread_getattr_np workaround_pthread_getattr_np
-#define pthread_attr_getguardsize workaround_pthread_attr_getguardsize
-#define pthread_attr_getstack workaround_pthread_attr_getstack
-#define pthread_attr_destroy workaround_pthread_attr_destroy
-
-typedef struct {
-    void *_a_stackaddr;
-    size_t _a_stacksize, _a_guardsize;
-} pthread_attr_t;
-
-extern __attribute__((__visibility__("hidden"))) unsigned __default_guardsize;
-
-// Modified version of pthread_getattr_np from the upstream PR.
-
-int pthread_getattr_np(pthread_t thread, pthread_attr_t *attr) {
-  attr->_a_stackaddr = (void*)emscripten_stack_get_base();
-  attr->_a_stacksize = emscripten_stack_get_base() - emscripten_stack_get_end();
-  attr->_a_guardsize = __default_guardsize;
-  return 0;
-}
-
-// These three functions copied without any changes from Emscripten libc.
-
-int pthread_attr_getguardsize(const pthread_attr_t *restrict a, size_t *restrict size)
-{
-	*size = a->_a_guardsize;
-	return 0;
-}
-
-int pthread_attr_getstack(const pthread_attr_t *restrict a, void **restrict addr, size_t *restrict size)
-{
-/// XXX musl is not standard-conforming? It should not report EINVAL if _a_stackaddr is zero, and it should
-///     report EINVAL if a is null: http://pubs.opengroup.org/onlinepubs/009695399/functions/pthread_attr_getstack.html
-	if (!a) return EINVAL;
-//	if (!a->_a_stackaddr)
-//		return EINVAL;
-
-	*size = a->_a_stacksize;
-	*addr = (void *)(a->_a_stackaddr - *size);
-	return 0;
-}
-
-int pthread_attr_destroy(pthread_attr_t *a)
-{
-	return 0;
-}
-
-#endif
-
 static void
 hardware_stack_limits(uintptr_t *base, uintptr_t *top, uintptr_t sp)
 {