/* * malloc-like functions for system emulation. * * Copyright (c) 2006 Fabrice Bellard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ #include "qemu-common.h" #include "trace.h" #include <stdlib.h> void qemu_free(void *ptr) { trace_qemu_free(ptr); free(ptr); } static int allow_zero_malloc(void) { #if defined(CONFIG_ZERO_MALLOC) return 1; #else return 0; #endif } void *qemu_malloc(size_t size) { void *ptr; if (!size && !allow_zero_malloc()) { abort(); } ptr = qemu_oom_check(malloc(size ? size : 1)); trace_qemu_malloc(size, ptr); return ptr; } void *qemu_realloc(void *ptr, size_t size) { void *newptr; if (!size && !allow_zero_malloc()) { abort(); } newptr = qemu_oom_check(realloc(ptr, size ? size : 1)); trace_qemu_realloc(ptr, size, newptr); return newptr; } void *qemu_mallocz(size_t size) { void *ptr; if (!size && !allow_zero_malloc()) { abort(); } ptr = qemu_oom_check(calloc(1, size ? size : 1)); trace_qemu_malloc(size, ptr); return ptr; } char *qemu_strdup(const char *str) { char *ptr; size_t len = strlen(str); ptr = qemu_malloc(len + 1); memcpy(ptr, str, len + 1); return ptr; } char *qemu_strndup(const char *str, size_t size) { const char *end = memchr(str, 0, size); char *new; if (end) { size = end - str; } new = qemu_malloc(size + 1); new[size] = 0; return memcpy(new, str, size); }