From cd7b005519ade8ab6c97fcb21590b71b7d1be6e3 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 28 Apr 2024 11:54:46 +0200 Subject: Adding upstream version 0.8.0. Signed-off-by: Daniel Baumann --- rtrlib/lib/alloc_utils.c | 81 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 rtrlib/lib/alloc_utils.c (limited to 'rtrlib/lib/alloc_utils.c') diff --git a/rtrlib/lib/alloc_utils.c b/rtrlib/lib/alloc_utils.c new file mode 100644 index 0000000..e3d6831 --- /dev/null +++ b/rtrlib/lib/alloc_utils.c @@ -0,0 +1,81 @@ +/* + * This file is part of RTRlib. + * + * This file is subject to the terms and conditions of the MIT license. + * See the file LICENSE in the top level directory for more details. + * + * Website: http://rtrlib.realmv6.org/ + */ + +#include "alloc_utils_private.h" + +#include "rtrlib/rtrlib_export_private.h" + +#include +#include +#include +#include + +static void *(*MALLOC_PTR)(size_t size) = malloc; +static void *(*REALLOC_PTR)(void *ptr, size_t size) = realloc; +static void (*FREE_PTR)(void *ptr) = free; + +/* cppcheck-suppress unusedFunction */ +RTRLIB_EXPORT void lrtr_set_alloc_functions(void *(*malloc_function)(size_t size), + void *(*realloc_function)(void *ptr, size_t size), + void(free_function)(void *ptr)) +{ + MALLOC_PTR = malloc_function; + REALLOC_PTR = realloc_function; + FREE_PTR = free_function; +} + +inline void *lrtr_malloc(size_t size) +{ + return MALLOC_PTR(size); +} + +/* cppcheck-suppress unusedFunction */ +void *lrtr_calloc(size_t nmemb, size_t size) +{ + int bytes = 0; + +#if __GNUC__ >= 5 + if (__builtin_mul_overflow(nmemb, size, &bytes)) { + errno = ENOMEM; + return 0; + } +#else + if (size && nmemb > (size_t)-1 / size) { + errno = ENOMEM; + return 0; + } + bytes = size * nmemb; +#endif + void *p = lrtr_malloc(bytes); + + if (!p) + return p; + + return memset(p, 0, bytes); +} + +inline void lrtr_free(void *ptr) +{ + return FREE_PTR(ptr); +} + +inline void *lrtr_realloc(void *ptr, size_t size) +{ + return REALLOC_PTR(ptr, size); +} + +char *lrtr_strdup(const char *string) +{ + assert(string); + + size_t length = strlen(string) + 1; + char *new_string = lrtr_malloc(length); + + return new_string ? memcpy(new_string, string, length) : NULL; +} -- cgit v1.2.3