From a514b3bd16e4f21202cc001d9294ac2c2f206c3d Mon Sep 17 00:00:00 2001 From: "Man, Jianting (Meco)" <920369182@qq.com> Date: Fri, 25 Mar 2022 11:07:18 -0400 Subject: [components][kconfig] 整理Kconfig目录名称和结构 (#5698) MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- components/cplusplus/cpp11/emutls.c | 216 ------------------------------------ 1 file changed, 216 deletions(-) delete mode 100644 components/cplusplus/cpp11/emutls.c (limited to 'components/cplusplus/cpp11/emutls.c') diff --git a/components/cplusplus/cpp11/emutls.c b/components/cplusplus/cpp11/emutls.c deleted file mode 100644 index 576888f16f..0000000000 --- a/components/cplusplus/cpp11/emutls.c +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Copyright (c) 2006-2021, RT-Thread Development Team - * - * SPDX-License-Identifier: Apache-2.0 - * - * Change Logs: - * Date Author Notes - * 2021-04-27 peterfan Add copyright header. - */ - -/* ===---------- emutls.c - Implements __emutls_get_address ---------------=== - * - * The LLVM Compiler Infrastructure - * - * This file is dual licensed under the MIT and the University of Illinois Open - * Source Licenses. See LICENSE.TXT for details. - * - * ===----------------------------------------------------------------------=== - */ - -#include -#include -#include -#include - -#define COMPILE_TIME_ASSERT(x) - -extern int pthread_key_create(pthread_key_t *key, void (*destructor)(void *)); -extern int pthread_key_delete(pthread_key_t key); -extern void *pthread_getspecific(pthread_key_t key); -extern int pthread_setspecific(pthread_key_t key, const void *value); - -/* Default is not to use posix_memalign, so systems like Android - * can use thread local data without heavier POSIX memory allocators. - */ -#ifndef EMUTLS_USE_POSIX_MEMALIGN -#define EMUTLS_USE_POSIX_MEMALIGN 0 -#endif - -/* For every TLS variable xyz, - * there is one __emutls_control variable named __emutls_v.xyz. - * If xyz has non-zero initial value, __emutls_v.xyz's "value" - * will point to __emutls_t.xyz, which has the initial value. - */ -typedef struct __emutls_control -{ - size_t size; /* size of the object in bytes */ - size_t align; /* alignment of the object in bytes */ - union - { - uintptr_t index; /* data[index-1] is the object address */ - void *address; /* object address, when in single thread env */ - } object; - void *value; /* null or non-zero initial value for the object */ -} __emutls_control; - -static __inline void *emutls_memalign_alloc(size_t align, size_t size) -{ - void *base; -#if EMUTLS_USE_POSIX_MEMALIGN - if (posix_memalign(&base, align, size) != 0) - abort(); -#else -#define EXTRA_ALIGN_PTR_BYTES (align - 1 + sizeof(void *)) - char *object; - if ((object = malloc(EXTRA_ALIGN_PTR_BYTES + size)) == NULL) - abort(); - base = (void *)(((uintptr_t)(object + EXTRA_ALIGN_PTR_BYTES)) & ~(uintptr_t)(align - 1)); - - ((void **)base)[-1] = object; -#endif - return base; -} - -static __inline void emutls_memalign_free(void *base) -{ -#if EMUTLS_USE_POSIX_MEMALIGN - free(base); -#else - /* The mallocated address is in ((void**)base)[-1] */ - free(((void **)base)[-1]); -#endif -} - -/* Emulated TLS objects are always allocated at run-time. */ -static __inline void *emutls_allocate_object(__emutls_control *control) -{ - /* Use standard C types, check with gcc's emutls.o. */ - typedef unsigned int gcc_word __attribute__((mode(word))); - typedef unsigned int gcc_pointer __attribute__((mode(pointer))); - COMPILE_TIME_ASSERT(sizeof(size_t) == sizeof(gcc_word)); - COMPILE_TIME_ASSERT(sizeof(uintptr_t) == sizeof(gcc_pointer)); - COMPILE_TIME_ASSERT(sizeof(uintptr_t) == sizeof(void *)); - - size_t size = control->size; - size_t align = control->align; - if (align < sizeof(void *)) - align = sizeof(void *); - /* Make sure that align is power of 2. */ - if ((align & (align - 1)) != 0) - abort(); - - void *base = emutls_memalign_alloc(align, size); - if (control->value) - memcpy(base, control->value, size); - else - memset(base, 0, size); - return base; -} - -static pthread_mutex_t emutls_mutex = PTHREAD_MUTEX_INITIALIZER; - -static size_t emutls_num_object = 0; /* number of allocated TLS objects */ - -typedef struct emutls_address_array -{ - uintptr_t size; /* number of elements in the 'data' array */ - void *data[]; -} emutls_address_array; - -static pthread_key_t emutls_pthread_key; - -static void emutls_key_destructor(void *ptr) -{ - emutls_address_array *array = (emutls_address_array *)ptr; - uintptr_t i; - for (i = 0; i < array->size; ++i) - { - if (array->data[i]) - emutls_memalign_free(array->data[i]); - } - free(ptr); -} - -static void emutls_init(void) -{ - if (pthread_key_create(&emutls_pthread_key, emutls_key_destructor) != 0) - abort(); -} - -/* Returns control->object.index; set index if not allocated yet. */ -static __inline uintptr_t emutls_get_index(__emutls_control *control) -{ - uintptr_t index = __atomic_load_n(&control->object.index, __ATOMIC_ACQUIRE); - if (!index) - { - static pthread_once_t once = PTHREAD_ONCE_INIT; - pthread_once(&once, emutls_init); - pthread_mutex_lock(&emutls_mutex); - index = control->object.index; - if (!index) - { - index = ++emutls_num_object; - __atomic_store_n(&control->object.index, index, __ATOMIC_RELEASE); - } - pthread_mutex_unlock(&emutls_mutex); - } - return index; -} - -/* Updates newly allocated thread local emutls_address_array. */ -static __inline void emutls_check_array_set_size(emutls_address_array *array, - uintptr_t size) -{ - if (array == NULL) - abort(); - array->size = size; - pthread_setspecific(emutls_pthread_key, (void *)array); -} - -/* Returns the new 'data' array size, number of elements, - * which must be no smaller than the given index. - */ -static __inline uintptr_t emutls_new_data_array_size(uintptr_t index) -{ - /* Need to allocate emutls_address_array with one extra slot - * to store the data array size. - * Round up the emutls_address_array size to multiple of 16. - */ - return ((index + 1 + 15) & ~((uintptr_t)15)) - 1; -} - -/* Returns the thread local emutls_address_array. - * Extends its size if necessary to hold address at index. - */ -static __inline emutls_address_array * -emutls_get_address_array(uintptr_t index) -{ - emutls_address_array *array = pthread_getspecific(emutls_pthread_key); - if (array == NULL) - { - uintptr_t new_size = emutls_new_data_array_size(index); - array = calloc(new_size + 1, sizeof(void *)); - emutls_check_array_set_size(array, new_size); - } - else if (index > array->size) - { - uintptr_t orig_size = array->size; - uintptr_t new_size = emutls_new_data_array_size(index); - array = realloc(array, (new_size + 1) * sizeof(void *)); - if (array) - memset(array->data + orig_size, 0, - (new_size - orig_size) * sizeof(void *)); - emutls_check_array_set_size(array, new_size); - } - return array; -} - -void *__emutls_get_address(void *control) -{ - uintptr_t index = emutls_get_index((__emutls_control *)control); - emutls_address_array *array = emutls_get_address_array(index); - if (array->data[index - 1] == NULL) - array->data[index - 1] = emutls_allocate_object((__emutls_control *)control); - return array->data[index - 1]; -} -- cgit v1.3.1