diff options
Diffstat (limited to 'src/libmdsserver/macros.h')
| -rw-r--r-- | src/libmdsserver/macros.h | 51 |
1 files changed, 49 insertions, 2 deletions
diff --git a/src/libmdsserver/macros.h b/src/libmdsserver/macros.h index b39d750..672c0a3 100644 --- a/src/libmdsserver/macros.h +++ b/src/libmdsserver/macros.h @@ -339,6 +339,17 @@ /** + * `malloc` wrapper that returns whether the allocation was not successful + * + * @param var:type* The variable to which to assign the allocation + * @param bytes:size_t The number of bytes to allocate + * @return :int Evaluates to true if an only if the allocation failed + */ +#define xbmalloc(var, elements) \ + ((var = malloc(elements)) == NULL) + + +/** * `calloc` wrapper that returns whether the allocation was not successful * * @param var:type* The variable to which to assign the allocation @@ -351,6 +362,17 @@ /** + * `calloc` wrapper that returns whether the allocation was not successful + * + * @param var:type* The variable to which to assign the allocation + * @param bytes:size_t The number of bytes to allocate + * @return :int Evaluates to true if an only if the allocation failed + */ +#define xbcalloc(var, bytes) \ + ((var = calloc(bytes, sizeof(char))) == NULL) + + +/** * `realloc` wrapper that returns whether the allocation was not successful * * @param var:type* The variable to which to assign the reallocation @@ -365,7 +387,7 @@ /** * `xrealloc` that stores the old variable * - * @param old:type* The variable to which to store with the old variable that needs + * @param old:type* The variable to which to store with the old variable that needs * to be `free`:ed on failure, and set to `NULL` on success. * @param var:type* The variable to which to assign the reallocation * @param elements:size_t The number of elements to allocate @@ -373,7 +395,21 @@ * @return :int Evaluates to true if an only if the allocation failed */ #define xxrealloc(old, var, elements, type) \ - (old = var, (xrealloc(var, elements, type) ? 1 : (old = NULL, 0))) + (old = var, (((var = realloc(var, (elements) * sizeof(type))) == NULL) ? 1 : (old = NULL, 0))) + + +/** + * `xrealloc` that restores the variable on failure + * + * @param tmp:type* The variable to which to store with the old variable temporarily + * @param var:type* The variable to which to assign the reallocation + * @param elements:size_t The number of elements to allocate + * @param type The data type of the elements for which to create an allocation + * @return :int Evaluates to true if an only if the allocation failed + */ +#define yrealloc(tmp, var, elements, type) \ + ((tmp = var, (var = realloc(var, (elements) * sizeof(type))) == NULL) \ + ? (var = tmp, tmp = NULL, 1) : (tmp = NULL, 0)) /** @@ -390,6 +426,17 @@ /** + * `strdup` wrapper that returns whether the allocation was not successful + * + * @param var:char* The variable to which to assign the duplicate + * @param original:const char* The string to duplicate + * @return :int Evaluates to true if an only if the allocation failed + */ +#define xstrdup(var, original) \ + (original ? ((var = strdup(original)) == NULL) : (var = NULL, 0)) + + +/** * Call `perror` if `errno` is non-zero and set `errno` to zero * * @param str:const char* The argument passed to `perror` |