exit(1);cstringnew_cstring_with_size(size_t n){cstring s=malloc((n+1)*sizeof(char));memset(s,0,n+1);if(!s){printf("new_cstring_with_size: ");NULL_PTR_ERROR}returns;}size_tcstring_size(cstring s){// 实际上有这么多空间可以用returnmalloc_usable_size(s)-1;} 然后测试这两个函数...
DUMA_EXTERN_C size_t _duma_malloc_usable_size(void *ptr); DUMA_EXTERN_C char *_duma_strdup(const char *str); DUMA_EXTERN_C void *_duma_memcpy(void *dest, const void *src, size_t size); DUMA_EXTERN_C void *_duma_memmove(void *dest, const void *src, size_t size); @@ -318...
char *a = (char malloc(sizeof(char)*10); printf("%d\n", malloc_usable_size(a) / sizeof(char)); } 我明明开辟的是 10个 char 空间为何显示的是24个char空间 我又做了个小实验 #include<stdio.h> #include<stdlib.h> int main() { int n = 41; char *a = (char *)malloc...
刚刚试了一下,malloc_usable_size()得到了很诡异的结果。 GTA小鸡 麻婆豆腐 11 调用malloc时大小参数不是你自己传的么,你怎么还要求大小? oO千手扑蝶Oo 异能力者 6 你的意思是“最后malloc分配的大小为什么比你想象中要大”,这个和内存对齐有关,你写的程序没有问题,暂时不要纠结这个。想深入了解就搜索有...
It looks like thathttps://github.com/servo/heapsize/blob/master/src/lib.rs#L44seem to create linking problems - at least on macos 10.13.6. It looks like that you rename the symbol to beje_malloc_usable_sizeformacos,iosandandroidsystems. At least for macos - after installing jemalloc with...
size =malloc_usable_size(p); assert(size >=2014);memset(p,'B', size);free(p); }else{ assert(0); }return0; } 开发者ID:hfinkel,项目名称:compiler-rt-bgq,代码行数:48,代码来源:sizes.cpp 示例6: _mosquitto_free ▲点赞 1▼
... Undefined symbols for architecture x86_64: "_je_malloc_usable_size", referenced from: heapsize::heap_size_of_impl::hb1048887d365f818 in libheapsize-3daab403b63f3097.rlib(heapsize-3daab403b63f3097.heapsize3.rcgu.o) ld: symbol(s) not found for architecture x86_64 clang: error: ...
Windows build is broken due to missingje_malloc_usable_sizereferenced byheapsize#9593 larsbergstromopened this issueFeb 10, 2016· 5 comments Contributor larsbergstromcommentedFeb 10, 2016 $ ./mach build -d Compiling plugins v0.0.1 (file:///C:/msys64/home/lars/servo/components/servo) error:...