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Diffstat (limited to '')
-rw-r--r-- | src/util/Alloc.cxx | 76 |
1 files changed, 76 insertions, 0 deletions
diff --git a/src/util/Alloc.cxx b/src/util/Alloc.cxx new file mode 100644 index 000000000..ec3579470 --- /dev/null +++ b/src/util/Alloc.cxx @@ -0,0 +1,76 @@ +/* + * Copyright (C) 2003-2014 The Music Player Daemon Project + * http://www.musicpd.org + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. + */ + +#include "Alloc.hxx" + +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +gcc_noreturn +static void +oom() +{ + (void)write(STDERR_FILENO, "Out of memory\n", 14); + _exit(1); +} + +void * +xalloc(size_t size) +{ + void *p = malloc(size); + if (gcc_unlikely(p == nullptr)) + oom(); + + return p; +} + +void * +xmemdup(const void *s, size_t size) +{ + void *p = xalloc(size); + memcpy(p, s, size); + return p; +} + +char * +xstrdup(const char *s) +{ + char *p = strdup(s); + if (gcc_unlikely(p == nullptr)) + oom(); + + return p; +} + +char * +xstrndup(const char *s, size_t n) +{ +#ifdef WIN32 + char *p = (char *)xalloc(n + 1); + memcpy(p, s, n); + p[n] = 0; +#else + char *p = strndup(s, n); + if (gcc_unlikely(p == nullptr)) + oom(); +#endif + + return p; +} |