i3/libi3/safewrappers.c

/*
 * vim:ts=4:sw=4:expandtab
 *
 * i3 - an improved dynamic tiling window manager
 *
 * © 2009-2011 Michael Stapelberg and contributors
 *
 * See file LICENSE for license information.
 *
 */
#include <string.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <err.h>


/*
 * The s* functions (safe) are wrappers around malloc, strdup, …, which exits if one of
 * the called functions returns NULL, meaning that there is no more memory available
 *
 */
void *smalloc(size_t size) {
    void *result = malloc(size);
    if (result == NULL)
        err(EXIT_FAILURE, "malloc(%zd)", size);
    return result;
}

void *scalloc(size_t size) {
    void *result = calloc(size, 1);
    if (result == NULL)
        err(EXIT_FAILURE, "calloc(%zd)", size);
    return result;
}

void *srealloc(void *ptr, size_t size) {
    void *result = realloc(ptr, size);
    if (result == NULL && size > 0)
        err(EXIT_FAILURE, "realloc(%zd)", size);
    return result;
}

char *sstrdup(const char *str) {
    char *result = strdup(str);
    if (result == NULL)
        err(EXIT_FAILURE, "strdup()");
    return result;
}

int sasprintf(char **strp, const char *fmt, ...) {
    va_list args;
    int result;

    va_start(args, fmt);
    if ((result = vasprintf(strp, fmt, args)) == -1)
        err(EXIT_FAILURE, "asprintf(%s)", fmt);
    va_end(args);
    return result;
}