adhere to fio coding standards
[fio.git] / client.c
index 932c665c1bbcc5fbfbce810d992323c48b44fd63..410ffb891d4a487515ed396161892d02b7653aad 100644 (file)
--- a/client.c
+++ b/client.c
@@ -33,6 +33,8 @@ static void handle_text(struct fio_client *client, struct fio_net_cmd *cmd);
 static void handle_stop(struct fio_client *client, struct fio_net_cmd *cmd);
 static void handle_start(struct fio_client *client, struct fio_net_cmd *cmd);
 
+static void convert_text(struct fio_net_cmd *cmd);
+
 struct client_ops fio_client_ops = {
        .text           = handle_text,
        .disk_util      = handle_du,
@@ -70,6 +72,8 @@ static int error_clients;
 #define FIO_CLIENT_HASH_MASK   (FIO_CLIENT_HASH_SZ - 1)
 static struct flist_head client_hash[FIO_CLIENT_HASH_SZ];
 
+static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *, bool *);
+
 static void fio_client_add_hash(struct fio_client *client)
 {
        int bucket = hash_long(client->fd, FIO_CLIENT_HASH_BITS);
@@ -213,12 +217,32 @@ static int fio_client_dec_jobs_eta(struct client_eta *eta, client_eta_op eta_fn)
        return 1;
 }
 
+static void fio_drain_client_text(struct fio_client *client)
+{
+       do {
+               struct fio_net_cmd *cmd;
+
+               cmd = fio_net_recv_cmd(client->fd, false);
+               if (!cmd)
+                       break;
+
+               if (cmd->opcode == FIO_NET_CMD_TEXT) {
+                       convert_text(cmd);
+                       client->ops->text(client, cmd);
+               }
+
+               free(cmd);
+       } while (1);
+}
+
 static void remove_client(struct fio_client *client)
 {
        assert(client->refs);
 
        dprint(FD_NET, "client: removed <%s>\n", client->hostname);
 
+       fio_drain_client_text(client);
+
        if (!flist_empty(&client->list))
                flist_del_init(&client->list);
 
@@ -323,7 +347,7 @@ err:
        return NULL;
 }
 
-int fio_client_add_ini_file(void *cookie, const char *ini_file, int remote)
+int fio_client_add_ini_file(void *cookie, const char *ini_file, bool remote)
 {
        struct fio_client *client = cookie;
        struct client_file *cf;
@@ -533,7 +557,7 @@ int fio_client_terminate(struct fio_client *client)
        return fio_net_send_quit(client->fd);
 }
 
-void fio_clients_terminate(void)
+static void fio_clients_terminate(void)
 {
        struct flist_head *entry;
        struct fio_client *client;
@@ -765,7 +789,7 @@ static int __fio_client_send_local_ini(struct fio_client *client,
 }
 
 int fio_client_send_ini(struct fio_client *client, const char *filename,
-                       int remote)
+                       bool remote)
 {
        int ret;
 
@@ -792,6 +816,8 @@ int fio_clients_send_ini(const char *filename)
        struct flist_head *entry, *tmp;
 
        flist_for_each_safe(entry, tmp, &client_list) {
+               bool failed = false;
+
                client = flist_entry(entry, struct fio_client, list);
 
                if (client->nr_files) {
@@ -803,12 +829,13 @@ int fio_clients_send_ini(const char *filename)
                                cf = &client->files[i];
 
                                if (fio_client_send_cf(client, cf)) {
+                                       failed = true;
                                        remove_client(client);
                                        break;
                                }
                        }
                }
-               if (client->sent_job)
+               if (client->sent_job || failed)
                        continue;
                if (!filename || fio_client_send_ini(client, filename, 0))
                        remove_client(client);
@@ -1003,7 +1030,8 @@ static void handle_job_opt(struct fio_client *client, struct fio_net_cmd *cmd)
                return;
 
        pdu->global = le16_to_cpu(pdu->global);
-       pdu->groupid = le16_to_cpu(pdu->groupid);
+       pdu->truncated = le16_to_cpu(pdu->truncated);
+       pdu->groupid = le32_to_cpu(pdu->groupid);
 
        p = malloc(sizeof(*p));
        p->name = strdup((char *) pdu->name);
@@ -1223,6 +1251,109 @@ static void handle_eta(struct fio_client *client, struct fio_net_cmd *cmd)
        fio_client_dec_jobs_eta(eta, client->ops->eta);
 }
 
+static void client_flush_hist_samples(FILE *f, int hist_coarseness, void *samples,
+                                     uint64_t sample_size)
+{
+       struct io_sample *s;
+       int log_offset;
+       uint64_t i, j, nr_samples;
+       struct io_u_plat_entry *entry;
+       unsigned int *io_u_plat;
+
+       int stride = 1 << hist_coarseness;
+
+       if (!sample_size)
+               return;
+
+       s = __get_sample(samples, 0, 0);
+       log_offset = (s->__ddir & LOG_OFFSET_SAMPLE_BIT) != 0;
+
+       nr_samples = sample_size / __log_entry_sz(log_offset);
+
+       for (i = 0; i < nr_samples; i++) {
+
+               s = (struct io_sample *)((char *)__get_sample(samples, log_offset, i) +
+                       i * sizeof(struct io_u_plat_entry));
+
+               entry = s->plat_entry;
+               io_u_plat = entry->io_u_plat;
+
+               fprintf(f, "%lu, %u, %u, ", (unsigned long) s->time,
+                                               io_sample_ddir(s), s->bs);
+               for (j = 0; j < FIO_IO_U_PLAT_NR - stride; j += stride) {
+                       fprintf(f, "%lu, ", hist_sum(j, stride, io_u_plat, NULL));
+               }
+               fprintf(f, "%lu\n", (unsigned long)
+                       hist_sum(FIO_IO_U_PLAT_NR - stride, stride, io_u_plat, NULL));
+
+       }
+}
+
+static int fio_client_handle_iolog(struct fio_client *client,
+                                  struct fio_net_cmd *cmd)
+{
+       struct cmd_iolog_pdu *pdu;
+       bool store_direct;
+       char *log_pathname;
+
+       pdu = convert_iolog(cmd, &store_direct);
+       if (!pdu) {
+               log_err("fio: failed converting IO log\n");
+               return 1;
+       }
+
+       /* generate a unique pathname for the log file using hostname */
+       log_pathname = malloc(PATH_MAX+10);
+       if (!log_pathname) {
+               log_err("fio: memory allocation of unique pathname failed");
+               return -1;
+       }
+       sprintf(log_pathname, "%s.%s", pdu->name, client->hostname);
+
+       if (store_direct) {
+               ssize_t ret;
+               size_t sz;
+               int fd;
+
+               fd = open((const char *) log_pathname,
+                               O_WRONLY | O_CREAT | O_TRUNC, 0644);
+               if (fd < 0) {
+                       log_err("fio: open log %s: %s\n", 
+                               log_pathname, strerror(errno));
+                       return 1;
+               }
+
+               sz = cmd->pdu_len - sizeof(*pdu);
+               ret = write(fd, pdu->samples, sz);
+               close(fd);
+
+               if (ret != sz) {
+                       log_err("fio: short write on compressed log\n");
+                       return 1;
+               }
+
+               return 0;
+       } else {
+               FILE *f;
+               f = fopen((const char *) log_pathname, "w");
+               if (!f) {
+                       log_err("fio: fopen log %s : %s\n", 
+                               log_pathname, strerror(errno));
+                       return 1;
+               }
+
+               if (pdu->log_type == IO_LOG_TYPE_HIST) {
+                       client_flush_hist_samples(f, pdu->log_hist_coarseness, pdu->samples,
+                                          pdu->nr_samples * sizeof(struct io_sample));
+               } else {
+                       flush_samples(f, pdu->samples,
+                                       pdu->nr_samples * sizeof(struct io_sample));
+               }
+               fclose(f);
+               return 0;
+       }
+}
+
 static void handle_probe(struct fio_client *client, struct fio_net_cmd *cmd)
 {
        struct cmd_probe_reply_pdu *probe = (struct cmd_probe_reply_pdu *) cmd->payload;
@@ -1317,7 +1448,11 @@ static struct cmd_iolog_pdu *convert_iolog_gz(struct fio_net_cmd *cmd,
         */
        nr_samples = le64_to_cpu(pdu->nr_samples);
 
-       total = nr_samples * __log_entry_sz(le32_to_cpu(pdu->log_offset));
+       if (pdu->log_type == IO_LOG_TYPE_HIST)
+               total = nr_samples * (__log_entry_sz(le32_to_cpu(pdu->log_offset)) +
+                                       sizeof(struct io_u_plat_entry));
+       else
+               total = nr_samples * __log_entry_sz(le32_to_cpu(pdu->log_offset));
        ret = malloc(total + sizeof(*pdu));
        ret->nr_samples = nr_samples;
 
@@ -1363,18 +1498,23 @@ err:
  * This has been compressed on the server side, since it can be big.
  * Uncompress here.
  */
-static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
+static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd,
+                                          bool *store_direct)
 {
        struct cmd_iolog_pdu *pdu = (struct cmd_iolog_pdu *) cmd->payload;
        struct cmd_iolog_pdu *ret;
        uint64_t i;
+       int compressed;
        void *samples;
 
+       *store_direct = false;
+
        /*
         * Convert if compressed and we support it. If it's not
         * compressed, we need not do anything.
         */
-       if (le32_to_cpu(pdu->compressed)) {
+       compressed = le32_to_cpu(pdu->compressed);
+       if (compressed == XMIT_COMPRESSED) {
 #ifndef CONFIG_ZLIB
                log_err("fio: server sent compressed data by mistake\n");
                return NULL;
@@ -1384,6 +1524,9 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
                        log_err("fio: failed decompressing log\n");
                        return NULL;
                }
+       } else if (compressed == STORE_COMPRESSED) {
+               *store_direct = true;
+               ret = pdu;
        } else
                ret = pdu;
 
@@ -1392,12 +1535,19 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
        ret->log_type           = le32_to_cpu(ret->log_type);
        ret->compressed         = le32_to_cpu(ret->compressed);
        ret->log_offset         = le32_to_cpu(ret->log_offset);
+       ret->log_hist_coarseness = le32_to_cpu(ret->log_hist_coarseness);
+
+       if (*store_direct)
+               return ret;
 
        samples = &ret->samples[0];
        for (i = 0; i < ret->nr_samples; i++) {
                struct io_sample *s;
 
                s = __get_sample(samples, ret->log_offset, i);
+               if (ret->log_type == IO_LOG_TYPE_HIST)
+                       s = (struct io_sample *)((void *)s + sizeof(struct io_u_plat_entry) * i);
+
                s->time         = le64_to_cpu(s->time);
                s->val          = le64_to_cpu(s->val);
                s->__ddir       = le32_to_cpu(s->__ddir);
@@ -1408,6 +1558,12 @@ static struct cmd_iolog_pdu *convert_iolog(struct fio_net_cmd *cmd)
 
                        so->offset = le64_to_cpu(so->offset);
                }
+
+               if (ret->log_type == IO_LOG_TYPE_HIST) {
+                       s->plat_entry = (struct io_u_plat_entry *)(((void *)s) + sizeof(*s));
+                       s->plat_entry->list.next = NULL;
+                       s->plat_entry->list.prev = NULL;
+               }
        }
 
        return ret;
@@ -1420,8 +1576,8 @@ static void sendfile_reply(int fd, struct cmd_sendfile_reply *rep,
        fio_net_send_cmd(fd, FIO_NET_CMD_SENDFILE, rep, size, &tag, NULL);
 }
 
-static int send_file(struct fio_client *client, struct cmd_sendfile *pdu,
-                    uint64_t tag)
+static int fio_send_file(struct fio_client *client, struct cmd_sendfile *pdu,
+                        uint64_t tag)
 {
        struct cmd_sendfile_reply *rep;
        struct stat sb;
@@ -1461,7 +1617,7 @@ int fio_handle_client(struct fio_client *client)
 
        dprint(FD_NET, "client: handle %s\n", client->hostname);
 
-       cmd = fio_net_recv_cmd(client->fd);
+       cmd = fio_net_recv_cmd(client->fd, true);
        if (!cmd)
                return 0;
 
@@ -1549,12 +1705,7 @@ int fio_handle_client(struct fio_client *client)
                break;
                }
        case FIO_NET_CMD_IOLOG:
-               if (ops->iolog) {
-                       struct cmd_iolog_pdu *pdu;
-
-                       pdu = convert_iolog(cmd);
-                       ops->iolog(client, pdu);
-               }
+               fio_client_handle_iolog(client, cmd);
                break;
        case FIO_NET_CMD_UPDATE_JOB:
                ops->update_job(client, cmd);
@@ -1576,7 +1727,7 @@ int fio_handle_client(struct fio_client *client)
                }
        case FIO_NET_CMD_SENDFILE: {
                struct cmd_sendfile *pdu = (struct cmd_sendfile *) cmd->payload;
-               send_file(client, pdu, cmd->tag);
+               fio_send_file(client, pdu, cmd->tag);
                break;
                }
        case FIO_NET_CMD_JOB_OPT: {
@@ -1665,12 +1816,13 @@ static void request_client_etas(struct client_ops *ops)
 static int handle_cmd_timeout(struct fio_client *client,
                              struct fio_net_cmd_reply *reply)
 {
+       flist_del(&reply->list);
+       free(reply);
+
        if (reply->opcode != FIO_NET_CMD_SEND_ETA)
                return 1;
 
        log_info("client <%s>: timeout on SEND_ETA\n", client->hostname);
-       flist_del(&reply->list);
-       free(reply);
 
        flist_del_init(&client->eta_list);
        if (client->eta_in_flight) {
@@ -1705,8 +1857,6 @@ static int client_check_cmd_timeout(struct fio_client *client,
 
                log_err("fio: client %s, timeout on cmd %s\n", client->hostname,
                                                fio_server_op(reply->opcode));
-               flist_del(&reply->list);
-               free(reply);
                ret = 1;
        }