Compare Advanc

转自:http://blog.sina.com.cn/s/blog_ab8c40b80102yznq.html

Compare Advance 官方对它的定义更加倾向于文件夹对比工具而不是文件夹同步,利用Compare Advance可以非常方便地找出两个文件夹中哪些文件是哪些文件是A(或者B)文件夹特有的,哪些是共有的,哪些是不同的,生成的信息图以及数据非常详细。对于一些需要做大量文件分析的工作的人来说,这个可是利器呀~

三款免费实用的文件夹同步/备份软件推荐(SyncToy/FreeFileSync/CompareAdvance)
三款免费实用的文件夹同步/备份软件推荐(SyncToy/FreeFileSync/CompareAdvance)

当然,既然分析得都如此彻底了,那么进行同步操作也无非就是一个命令的事情, Compare Advance 的同步功能也很强大,按 Ctrl + Y 就可以在分析之后调出同步面板,在这里也可以设置同步的模式,也很方便。

/* RDMA read response. If res is not NULL, then we have a current RDMA request * being processed or replayed. */ static enum resp_states read_reply(struct vhost_rdma_qp *qp, struct vhost_rdma_pkt_info *req_pkt) { struct vhost_rdma_pkt_info ack_pkt; struct rte_mbuf *mbuf; uint32_t mtu = qp->mtu; enum resp_states state; int payload; int opcode; int err; struct resp_res *res = qp->resp.res; uint32_t icrc; uint32_t *p; if (!res) { /* This is the first time we process that request. Get a * resource */ res = &qp->resp.resources[qp->resp.res_head]; free_rd_atomic_resource(qp, res); vhost_rdma_advance_resp_resource(qp); res->type = VHOST_READ_MASK; res->replay = 0; res->read.va = qp->resp.va + qp->resp.offset; res->read.va_org = qp->resp.va + qp->resp.offset; res->first_psn = req_pkt->psn; if (reth_len(req_pkt)) { res->last_psn = (req_pkt->psn + (reth_len(req_pkt) + mtu - 1) / mtu - 1) & BTH_PSN_MASK; } else { res->last_psn = res->first_psn; } res->cur_psn = req_pkt->psn; res->read.resid = qp->resp.resid; res->read.length = qp->resp.resid; res->read.rkey = qp->resp.rkey; /* note res inherits the reference to mr from qp */ res->read.mr = qp->resp.mr; qp->resp.mr = NULL; qp->resp.res = res; res->state = rdatm_res_state_new; } if (res->state == rdatm_res_state_new) { if (res->read.resid <= mtu) opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_ONLY; else opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_FIRST; } else { if (res->read.resid > mtu) opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_MIDDLE; else opcode = IB_OPCODE_RC_RDMA_READ_RESPONSE_LAST; } res->state = rdatm_res_state_next; payload = RTE_MIN(res->read.resid, mtu); mbuf = prepare_ack_packet(qp, req_pkt, &ack_pkt, opcode, payload, res->cur_psn, AETH_ACK_UNLIMITED, &icrc); if (!mbuf) return RESPST_ERR_RNR; err = vhost_rdma_mr_copy(qp->dev->mem, res->read.mr, res->read.va, payload_addr(&ack_pkt), payload, VHOST_FROM_MR_OBJ, &icrc); if (err) RDMA_LOG_ERR_DP("Failed copying memory\n"); if (bth_pad(&ack_pkt)) { uint8_t *pad = payload_addr(&ack_pkt) + payload; memset(pad, 0, bth_pad(&ack_pkt)); icrc = crc32(icrc, pad, bth_pad(&ack_pkt)); } p = payload_addr(&ack_pkt) + payload + bth_pad(&ack_pkt); *p = ~icrc; err = vhost_rdma_xmit_packet(qp, &ack_pkt, mbuf); if (err) { RDMA_LOG_ERR_DP("Failed sending RDMA reply.\n"); return RESPST_ERR_RNR; } res->read.va += payload; res->read.resid -= payload; res->cur_psn = (res->cur_psn + 1) & BTH_PSN_MASK; if (res->read.resid > 0) { state = RESPST_DONE; } else { qp->resp.res = NULL; if (!res->replay) qp->resp.opcode = -1; if (psn_compare(res->cur_psn, qp->resp.psn) >= 0) qp->resp.psn = res->cur_psn; state = RESPST_CLEANUP; } return state; }
04-01
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