*/ // 如果存在外部sbrk,则将外部分配的空间也纳入统计 if (old_size) av->system_mem += brk - old_end; /* Guarantee alignment of first new chunk made from this space */ // 计算头部错位 front_misalign = (INTERNAL_SIZE_T)chunk2mem(brk) & MALLOC_ALIGN_MASK; if (front_misalign > 0)...
What are the differences between "brk()" and "mmap()"? How to guarantee alignment with malloc and or new? Understanding Memory Pages and Page Alignment 151617
/* Guarantee alignment of first new chunk made from this space */ front_misalign = (INTERNAL_SIZE_T)chunk2mem(brk) & MALLOC_ALIGN_MASK; if (front_misalign > 0) { /* Skip over some bytes to arrive at an aligned position. We don't need to specially mark these wasted front bytes. ...
GNU Libc - Extremely old repo used for research purposes years ago. Please do not rely on this repo. - glibc/malloc/malloc.c at master · lattera/glibc
guarantee that linear overflows are detected. There are a few ways of implementing this and it will end up depending on the performance costs of different approaches. If there's an efficient way to fetch the adjacent tag values without wasting extra memory, it will be possible to check for ...
MALLOC_ALIGNMENT MAX (2 * sizeof(INTERNAL_SIZE_T), __alignof__ (long double)) Configuration and functionality options: USE_DL_PREFIX NOT defined USE_PUBLIC_MALLOC_WRAPPERS NOT defined USE_MALLOC_LOCK NOT defined MALLOC_DEBUG NOT defined REALLOC_ZERO_BYTES_FREES 1 MALLOC_FAILURE_AC...
免费加入 已有帐号?立即登录 此仓库是为了提升国内下载速度的镜像仓库,每日同步一次。 原始仓库:https://github.com/ivmai/bdwgc master 分支(9) 标签(134) 管理 管理 master release-8_2 release-8_0 release-7_6 release-7_4 release-7_2 racket_gc ...
You can think of the Nix package manager as a hybrid of apt-get and Python’s virtualenv with a sprinkling of git; you can use Nix to build multiple, isolated sets of packages on, say, a per-project basis, with the guarantee that Nix only needs to fetch (or build) shared ...
The docs only guarantee 8 byte alignment, that doesn't necessarily mean it will be 8 bytes, just that you cannot assume it will be greater than that. You're best to stay away from GlobalAlloc for anything that requires alignment anyway, VirtualAlloc is a faster and more flexible function. ...
the standard C library (glibc). Since the glibc malloc always returns payload pointers that are aligned to 8 bytes, your malloc implementation should do likewise and always return 8-byte aligned pointers. Our mdriver program tests for 8-byte alignment and terminates if the alignment check fails...