這次使用的內存池是原公司的，利用hash_map做的，大概的接口是這樣：

template <class CObject> class ObjectPool { <br>public:<br> typedef hash_map<int64_t,ObjectBlock*> BlockMap;virtual int pop(CObject *&ob);virtual int push(const CObject *ob);<br>private:<br> BlockMap _block_map; };
寫測試代碼比較了一下內存池和tcmalloc的差距！結果挺讓人吃驚！

#define MAX_SIZE 50000struct MsgToPut {UINT _wr_ptr;UINT _rd_ptr;UINT _length;CHAR _base[1024];void reset(){this->_rd_ptr = this->_wr_ptr = 0;this->_length = 1024;} };ObjectPool<MsgToPut> MsgPool;void* newthread(void* argv) {long long int start = get_os_system_time();for(int i=0;i<MAX_SIZE;i++){MsgToPut* msg;MsgPool.pop(msg);if(msg == NULL){printf("error\n");}}long long int end = get_os_system_time();printf("newthread ObjectPool:%d\n",end - start);MsgToPut* mtp[MAX_SIZE];for(int i=0;i<MAX_SIZE;i++){mtp[i] = (MsgToPut*)tc_malloc(sizeof(MsgToPut));mtp[i]->reset();}start = get_os_system_time();printf("newthread tc malloc :%d\n",start - end);return (void*)0; }int main() {pthread_t pid;pthread_create(&pid,NULL,newthread,NULL);pthread_create(&pid,NULL,newthread,NULL);pthread_create(&pid,NULL,newthread,NULL);long long int start = get_os_system_time();for(int i=0;i<MAX_SIZE;i++){MsgToPut* msg = NULL;MsgPool.pop(msg);if(msg == NULL){printf("error\n");}}long long int end = get_os_system_time();printf("main ObjectPool:%d\n",end - start);MsgToPut* mtp[MAX_SIZE];for(int i=0;i<MAX_SIZE;i++){mtp[i] = (MsgToPut*)tc_malloc(sizeof(MsgToPut));mtp[i]->reset();}start = get_os_system_time();printf("main tc malloc :%d\n",start - end);return 0; }

普遍打印數據為：

newthread ObjectPool:189
newthread ObjectPool:202
newthread tc malloc :24
newthread tc malloc :20
main ObjectPool:235
newthread ObjectPool:235
main tc malloc :21
newthread tc malloc :22

總結

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