int main() { // Declare a structure variable struct Data data; // Set all bytes of the structure to -1 memset(&data, -1, sizeof(data)); // Display the structure values printf("Data after memset:\n"); printf("id: %d, score: %f, name: %s\n", data.id, data.score, data.nam...
// 将 weak ptr地址 从obj的weak_entry_t中移除 // 参数weak_table 全局弱引用表 // referent_id 弱引用所指向的对象 // referrer_id 弱引用指针地址 void weak_unregister_no_lock(weak_table_t *weak_table, id referent_id, id *referrer_id) { // 被弱引用的对象 objc_object *referent = (obj...
类型参数名称 void * addr int c size_t len 108 check_memory_region((unsignedlong)addr, len, true, _RET_IP_) 110 返回:内存设置(addr, c, len) 调用者 名称描述 move_right ip6_compressed_string radix_tree_node_rcu_free radix_tree_node_ctor start_bunzip Allocate the structure, ...
KIND must stay at this position in the structure to maintain binary compatibility. */ int __kind; int __spins; } __data; char __size[__SIZEOF_PTHREAD_MUTEX_T]; long int __align; } pthread_mutex_t; int __lock; 资源竞争引用计数 int __kind; 锁类型,init 函数中mutexattr 参数传递,...
I also sometimes see that the data copied is incorrect. For instance, a variable will have an invalid number, like the bytes copied were maybe shifted? Here is a better description of my structs. I have an array[5000] of largeStruct. sizeof(largeStruct) = 32384 ...
What happened in these traces is that the global variable is not in the L1 CPU cache, so it takes a long time for the load to retire. It takes longer for that load to retire than for the rest of the memset function to speculatively execute and return to the calling function. While th...
sizeof是何方神圣sizeof乃C/C++中的一个操作符(operator)是也,简单的说其作用就是返回一个对象或者类型所占的内存字节数。 MSDN上的解释为: The sizeof keyword gives the amount of storage, in bytes, associated with a variable or a type (including aggregate types). This keyword returns a value of...
The implementation appears to be sound and maintains the overall structure and logic of the zlib decompression process. chunkset_tpl.h (2) 254-272: ⚠️ Potential issue Ensure valid pointer arithmetic in CHUNKCOPY_SAFE In CHUNKCOPY_SAFE, pointer arithmetic is performed with safe, out, and ...
code instead of 2 or 3), no need for a loop variable and it might be easier to understand what you're doing there (and it might even be a bit faster;-). On the other hand you have to know where you can't use memset() (e.g. for zeroing out an array of doubles or pointers...
method allocates a region of memory with 200 chars as you explicitly code the amount of memory you want, //use free() to destroy the memory allocated after use. free(str->name); //first destroy the memory, for the variable inside the structure free(str); //destroy the memory allocated...