diff --git a/include/stdlib.h b/include/stdlib.h index 740bd06f274..f43bae48dd7 100644 --- a/include/stdlib.h +++ b/include/stdlib.h @@ -200,6 +200,7 @@ size_t wcstombs(FAR char *dst, FAR const wchar_t *src, size_t len); /* Memory Management */ FAR void *malloc(size_t); +FAR void *valloc(size_t); void free(FAR void *); FAR void *realloc(FAR void *, size_t); FAR void *memalign(size_t, size_t); diff --git a/libs/libc/stdlib/Make.defs b/libs/libc/stdlib/Make.defs index 2a5bcb761a0..5e01d1a16b1 100644 --- a/libs/libc/stdlib/Make.defs +++ b/libs/libc/stdlib/Make.defs @@ -26,6 +26,7 @@ CSRCS += lib_itoa.c lib_labs.c lib_llabs.c lib_realpath.c lib_bsearch.c CSRCS += lib_rand.c lib_posix_memalign.c lib_qsort.c lib_srand.c lib_strtol.c CSRCS += lib_strtoll.c lib_strtoul.c lib_strtoull.c lib_strtod.c lib_strtof.c CSRCS += lib_strtold.c lib_checkbase.c lib_mktemp.c lib_mkstemp.c lib_mkdtemp.c +CSRCS += lib_valloc.c ifeq ($(CONFIG_LIBC_WCHAR),y) CSRCS += lib_mblen.c lib_mbtowc.c lib_wctomb.c diff --git a/libs/libc/stdlib/lib_valloc.c b/libs/libc/stdlib/lib_valloc.c new file mode 100644 index 00000000000..7bafdfa16e9 --- /dev/null +++ b/libs/libc/stdlib/lib_valloc.c @@ -0,0 +1,51 @@ +/**************************************************************************** + * libs/libc/stdlib/lib_valloc.c + * + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. The + * ASF licenses this file to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance with the + * License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT + * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the + * License for the specific language governing permissions and limitations + * under the License. + * + ****************************************************************************/ + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include +#include + +/**************************************************************************** + * Public Functions + ****************************************************************************/ + +/**************************************************************************** + * Name: valloc + * + * Description: + * valloc has the same effect as malloc(), except that the allocated + * memory is aligned to a page boundary. + * + * Input Parameters: + * size - Specifies the size (in bytes) of the allocated block of memory. + * If size is zero, a unique pointer to the heap is returned. + * + * Returned Value: + * The address of the allocated memory (NULL on failure to allocate) + * + ****************************************************************************/ + +FAR void *valloc(size_t size) +{ + return memalign(sysconf(_SC_PAGESIZE), size); +}