removed a bug in the function to cancel an I/O job

1 files changed, 638 insertions, 0 deletions

diff --git a/redis-benchmark.c b/redis-benchmark.c
new file mode 100644
index 000000000..2984efe41
--- /dev/null
+++ b/redis-benchmark.c
@@ -0,0 +1,638 @@
+/* Redis benchmark utility.
+ *
+ * Copyright (c) 2006-2009, Salvatore Sanfilippo <antirez at gmail dot com>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *   * Redistributions of source code must retain the above copyright notice,
+ *     this list of conditions and the following disclaimer.
+ *   * Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ *   * Neither the name of Redis nor the names of its contributors may be used
+ *     to endorse or promote products derived from this software without
+ *     specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "fmacros.h"
+
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <errno.h>
+#include <sys/time.h>
+#include <signal.h>
+#include <assert.h>
+
+#include "ae.h"
+#include "anet.h"
+#include "sds.h"
+#include "adlist.h"
+#include "zmalloc.h"
+
+#define REPLY_INT 0
+#define REPLY_RETCODE 1
+#define REPLY_BULK 2
+#define REPLY_MBULK 3
+
+#define CLIENT_CONNECTING 0
+#define CLIENT_SENDQUERY 1
+#define CLIENT_READREPLY 2
+
+#define MAX_LATENCY 5000
+
+#define REDIS_NOTUSED(V) ((void) V)
+
+static struct config {
+    int debug;
+    int numclients;
+    int requests;
+    int liveclients;
+    int donerequests;
+    int keysize;
+    int datasize;
+    int randomkeys;
+    int randomkeys_keyspacelen;
+    aeEventLoop *el;
+    char *hostip;
+    int hostport;
+    int keepalive;
+    long long start;
+    long long totlatency;
+    int *latency;
+    list *clients;
+    int quiet;
+    int loop;
+    int idlemode;
+} config;
+
+typedef struct _client {
+    int state;
+    int fd;
+    sds obuf;
+    sds ibuf;
+    int mbulk;          /* Number of elements in an mbulk reply */
+    int readlen;        /* readlen == -1 means read a single line */
+    int totreceived;
+    unsigned int written;        /* bytes of 'obuf' already written */
+    int replytype;
+    long long start;    /* start time in milliseconds */
+} *client;
+
+/* Prototypes */
+static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask);
+static void createMissingClients(client c);
+
+/* Implementation */
+static long long mstime(void) {
+    struct timeval tv;
+    long long mst;
+
+    gettimeofday(&tv, NULL);
+    mst = ((long)tv.tv_sec)*1000;
+    mst += tv.tv_usec/1000;
+    return mst;
+}
+
+static void freeClient(client c) {
+    listNode *ln;
+
+    aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
+    aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
+    sdsfree(c->ibuf);
+    sdsfree(c->obuf);
+    close(c->fd);
+    zfree(c);
+    config.liveclients--;
+    ln = listSearchKey(config.clients,c);
+    assert(ln != NULL);
+    listDelNode(config.clients,ln);
+}
+
+static void freeAllClients(void) {
+    listNode *ln = config.clients->head, *next;
+
+    while(ln) {
+        next = ln->next;
+        freeClient(ln->value);
+        ln = next;
+    }
+}
+
+static void resetClient(client c) {
+    aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
+    aeDeleteFileEvent(config.el,c->fd,AE_READABLE);
+    aeCreateFileEvent(config.el,c->fd, AE_WRITABLE,writeHandler,c);
+    sdsfree(c->ibuf);
+    c->ibuf = sdsempty();
+    c->readlen = (c->replytype == REPLY_BULK ||
+                  c->replytype == REPLY_MBULK) ? -1 : 0;
+    c->mbulk = -1;
+    c->written = 0;
+    c->totreceived = 0;
+    c->state = CLIENT_SENDQUERY;
+    c->start = mstime();
+    createMissingClients(c);
+}
+
+static void randomizeClientKey(client c) {
+    char *p;
+    char buf[32];
+    long r;
+
+    p = strstr(c->obuf, "_rand");
+    if (!p) return;
+    p += 5;
+    r = random() % config.randomkeys_keyspacelen;
+    sprintf(buf,"%ld",r);
+    memcpy(p,buf,strlen(buf));
+}
+
+static void prepareClientForReply(client c, int type) {
+    if (type == REPLY_BULK) {
+        c->replytype = REPLY_BULK;
+        c->readlen = -1;
+    } else if (type == REPLY_MBULK) {
+        c->replytype = REPLY_MBULK;
+        c->readlen = -1;
+        c->mbulk = -1;
+    } else {
+        c->replytype = type;
+        c->readlen = 0;
+    }
+}
+
+static void clientDone(client c) {
+    static int last_tot_received = 1;
+
+    long long latency;
+    config.donerequests ++;
+    latency = mstime() - c->start;
+    if (latency > MAX_LATENCY) latency = MAX_LATENCY;
+    config.latency[latency]++;
+
+    if (config.debug && last_tot_received != c->totreceived) {
+        printf("Tot bytes received: %d\n", c->totreceived);
+        last_tot_received = c->totreceived;
+    }
+    if (config.donerequests == config.requests) {
+        freeClient(c);
+        aeStop(config.el);
+        return;
+    }
+    if (config.keepalive) {
+        resetClient(c);
+        if (config.randomkeys) randomizeClientKey(c);
+    } else {
+        config.liveclients--;
+        createMissingClients(c);
+        config.liveclients++;
+        freeClient(c);
+    }
+}
+
+static void readHandler(aeEventLoop *el, int fd, void *privdata, int mask)
+{
+    char buf[1024];
+    int nread;
+    client c = privdata;
+    REDIS_NOTUSED(el);
+    REDIS_NOTUSED(fd);
+    REDIS_NOTUSED(mask);
+
+    nread = read(c->fd, buf, 1024);
+    if (nread == -1) {
+        fprintf(stderr, "Reading from socket: %s\n", strerror(errno));
+        freeClient(c);
+        return;
+    }
+    if (nread == 0) {
+        fprintf(stderr, "EOF from client\n");
+        freeClient(c);
+        return;
+    }
+    c->totreceived += nread;
+    c->ibuf = sdscatlen(c->ibuf,buf,nread);
+
+processdata:
+    /* Are we waiting for the first line of the command of for  sdf 
+     * count in bulk or multi bulk operations? */
+    if (c->replytype == REPLY_INT ||
+        c->replytype == REPLY_RETCODE ||
+        (c->replytype == REPLY_BULK && c->readlen == -1) ||
+        (c->replytype == REPLY_MBULK && c->readlen == -1) ||
+        (c->replytype == REPLY_MBULK && c->mbulk == -1)) {
+        char *p;
+
+        /* Check if the first line is complete. This is only true if
+         * there is a newline inside the buffer. */
+        if ((p = strchr(c->ibuf,'\n')) != NULL) {
+            if (c->replytype == REPLY_BULK ||
+                (c->replytype == REPLY_MBULK && c->mbulk != -1))
+            {
+                /* Read the count of a bulk reply (being it a single bulk or
+                 * a multi bulk reply). "$<count>" for the protocol spec. */
+                *p = '\0';
+                *(p-1) = '\0';
+                c->readlen = atoi(c->ibuf+1)+2;
+                // printf("BULK ATOI: %s\n", c->ibuf+1);
+                /* Handle null bulk reply "$-1" */
+                if (c->readlen-2 == -1) {
+                    clientDone(c);
+                    return;
+                }
+                /* Leave all the rest in the input buffer */
+                c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
+                /* fall through to reach the point where the code will try
+                 * to check if the bulk reply is complete. */
+            } else if (c->replytype == REPLY_MBULK && c->mbulk == -1) {
+                /* Read the count of a multi bulk reply. That is, how many
+                 * bulk replies we have to read next. "*<count>" protocol. */
+                *p = '\0';
+                *(p-1) = '\0';
+                c->mbulk = atoi(c->ibuf+1);
+                /* Handle null bulk reply "*-1" */
+                if (c->mbulk == -1) {
+                    clientDone(c);
+                    return;
+                }
+                // printf("%p) %d elements list\n", c, c->mbulk);
+                /* Leave all the rest in the input buffer */
+                c->ibuf = sdsrange(c->ibuf,(p-c->ibuf)+1,-1);
+                goto processdata;
+            } else {
+                c->ibuf = sdstrim(c->ibuf,"\r\n");
+                clientDone(c);
+                return;
+            }
+        }
+    }
+    /* bulk read, did we read everything? */
+    if (((c->replytype == REPLY_MBULK && c->mbulk != -1) || 
+         (c->replytype == REPLY_BULK)) && c->readlen != -1 &&
+          (unsigned)c->readlen <= sdslen(c->ibuf))
+    {
+        // printf("BULKSTATUS mbulk:%d readlen:%d sdslen:%d\n",
+        //    c->mbulk,c->readlen,sdslen(c->ibuf));
+        if (c->replytype == REPLY_BULK) {
+            clientDone(c);
+        } else if (c->replytype == REPLY_MBULK) {
+            // printf("%p) %d (%d)) ",c, c->mbulk, c->readlen);
+            // fwrite(c->ibuf,c->readlen,1,stdout);
+            // printf("\n");
+            if (--c->mbulk == 0) {
+                clientDone(c);
+            } else {
+                c->ibuf = sdsrange(c->ibuf,c->readlen,-1);
+                c->readlen = -1;
+                goto processdata;
+            }
+        }
+    }
+}
+
+static void writeHandler(aeEventLoop *el, int fd, void *privdata, int mask)
+{
+    client c = privdata;
+    REDIS_NOTUSED(el);
+    REDIS_NOTUSED(fd);
+    REDIS_NOTUSED(mask);
+
+    if (c->state == CLIENT_CONNECTING) {
+        c->state = CLIENT_SENDQUERY;
+        c->start = mstime();
+    }
+    if (sdslen(c->obuf) > c->written) {
+        void *ptr = c->obuf+c->written;
+        int len = sdslen(c->obuf) - c->written;
+        int nwritten = write(c->fd, ptr, len);
+        if (nwritten == -1) {
+            if (errno != EPIPE)
+                fprintf(stderr, "Writing to socket: %s\n", strerror(errno));
+            freeClient(c);
+            return;
+        }
+        c->written += nwritten;
+        if (sdslen(c->obuf) == c->written) {
+            aeDeleteFileEvent(config.el,c->fd,AE_WRITABLE);
+            aeCreateFileEvent(config.el,c->fd,AE_READABLE,readHandler,c);
+            c->state = CLIENT_READREPLY;
+        }
+    }
+}
+
+static client createClient(void) {
+    client c = zmalloc(sizeof(struct _client));
+    char err[ANET_ERR_LEN];
+
+    c->fd = anetTcpNonBlockConnect(err,config.hostip,config.hostport);
+    if (c->fd == ANET_ERR) {
+        zfree(c);
+        fprintf(stderr,"Connect: %s\n",err);
+        return NULL;
+    }
+    anetTcpNoDelay(NULL,c->fd);
+    c->obuf = sdsempty();
+    c->ibuf = sdsempty();
+    c->mbulk = -1;
+    c->readlen = 0;
+    c->written = 0;
+    c->totreceived = 0;
+    c->state = CLIENT_CONNECTING;
+    aeCreateFileEvent(config.el, c->fd, AE_WRITABLE, writeHandler, c);
+    config.liveclients++;
+    listAddNodeTail(config.clients,c);
+    return c;
+}
+
+static void createMissingClients(client c) {
+    while(config.liveclients < config.numclients) {
+        client new = createClient();
+        if (!new) continue;
+        sdsfree(new->obuf);
+        new->obuf = sdsdup(c->obuf);
+        if (config.randomkeys) randomizeClientKey(c);
+        prepareClientForReply(new,c->replytype);
+    }
+}
+
+static void showLatencyReport(char *title) {
+    int j, seen = 0;
+    float perc, reqpersec;
+
+    reqpersec = (float)config.donerequests/((float)config.totlatency/1000);
+    if (!config.quiet) {
+        printf("====== %s ======\n", title);
+        printf("  %d requests completed in %.2f seconds\n", config.donerequests,
+            (float)config.totlatency/1000);
+        printf("  %d parallel clients\n", config.numclients);
+        printf("  %d bytes payload\n", config.datasize);
+        printf("  keep alive: %d\n", config.keepalive);
+        printf("\n");
+        for (j = 0; j <= MAX_LATENCY; j++) {
+            if (config.latency[j]) {
+                seen += config.latency[j];
+                perc = ((float)seen*100)/config.donerequests;
+                printf("%.2f%% <= %d milliseconds\n", perc, j);
+            }
+        }
+        printf("%.2f requests per second\n\n", reqpersec);
+    } else {
+        printf("%s: %.2f requests per second\n", title, reqpersec);
+    }
+}
+
+static void prepareForBenchmark(void)
+{
+    memset(config.latency,0,sizeof(int)*(MAX_LATENCY+1));
+    config.start = mstime();
+    config.donerequests = 0;
+}
+
+static void endBenchmark(char *title) {
+    config.totlatency = mstime()-config.start;
+    showLatencyReport(title);
+    freeAllClients();
+}
+
+void parseOptions(int argc, char **argv) {
+    int i;
+
+    for (i = 1; i < argc; i++) {
+        int lastarg = i==argc-1;
+        
+        if (!strcmp(argv[i],"-c") && !lastarg) {
+            config.numclients = atoi(argv[i+1]);
+            i++;
+        } else if (!strcmp(argv[i],"-n") && !lastarg) {
+            config.requests = atoi(argv[i+1]);
+            i++;
+        } else if (!strcmp(argv[i],"-k") && !lastarg) {
+            config.keepalive = atoi(argv[i+1]);
+            i++;
+        } else if (!strcmp(argv[i],"-h") && !lastarg) {
+            char *ip = zmalloc(32);
+            if (anetResolve(NULL,argv[i+1],ip) == ANET_ERR) {
+                printf("Can't resolve %s\n", argv[i]);
+                exit(1);
+            }
+            config.hostip = ip;
+            i++;
+        } else if (!strcmp(argv[i],"-p") && !lastarg) {
+            config.hostport = atoi(argv[i+1]);
+            i++;
+        } else if (!strcmp(argv[i],"-d") && !lastarg) {
+            config.datasize = atoi(argv[i+1]);
+            i++;
+            if (config.datasize < 1) config.datasize=1;
+            if (config.datasize > 1024*1024) config.datasize = 1024*1024;
+        } else if (!strcmp(argv[i],"-r") && !lastarg) {
+            config.randomkeys = 1;
+            config.randomkeys_keyspacelen = atoi(argv[i+1]);
+            if (config.randomkeys_keyspacelen < 0)
+                config.randomkeys_keyspacelen = 0;
+            i++;
+        } else if (!strcmp(argv[i],"-q")) {
+            config.quiet = 1;
+        } else if (!strcmp(argv[i],"-l")) {
+            config.loop = 1;
+        } else if (!strcmp(argv[i],"-D")) {
+            config.debug = 1;
+        } else if (!strcmp(argv[i],"-I")) {
+            config.idlemode = 1;
+        } else {
+            printf("Wrong option '%s' or option argument missing\n\n",argv[i]);
+            printf("Usage: redis-benchmark [-h <host>] [-p <port>] [-c <clients>] [-n <requests]> [-k <boolean>]\n\n");
+            printf(" -h <hostname>      Server hostname (default 127.0.0.1)\n");
+            printf(" -p <hostname>      Server port (default 6379)\n");
+            printf(" -c <clients>       Number of parallel connections (default 50)\n");
+            printf(" -n <requests>      Total number of requests (default 10000)\n");
+            printf(" -d <size>          Data size of SET/GET value in bytes (default 2)\n");
+            printf(" -k <boolean>       1=keep alive 0=reconnect (default 1)\n");
+            printf(" -r <keyspacelen>   Use random keys for SET/GET/INCR\n");
+            printf("  Using this option the benchmark will get/set keys\n");
+            printf("  in the form mykey_rand000000012456 instead of constant\n");
+            printf("  keys, the <keyspacelen> argument determines the max\n");
+            printf("  number of values for the random number. For instance\n");
+            printf("  if set to 10 only rand000000000000 - rand000000000009\n");
+            printf("  range will be allowed.\n");
+            printf(" -q                 Quiet. Just show query/sec values\n");
+            printf(" -l                 Loop. Run the tests forever\n");
+            printf(" -I                 Idle mode. Just open N idle connections and wait.\n");
+            printf(" -D                 Debug mode. more verbose.\n");
+            exit(1);
+        }
+    }
+}
+
+int main(int argc, char **argv) {
+    client c;
+
+    signal(SIGHUP, SIG_IGN);
+    signal(SIGPIPE, SIG_IGN);
+
+    config.debug = 0;
+    config.numclients = 50;
+    config.requests = 10000;
+    config.liveclients = 0;
+    config.el = aeCreateEventLoop();
+    config.keepalive = 1;
+    config.donerequests = 0;
+    config.datasize = 3;
+    config.randomkeys = 0;
+    config.randomkeys_keyspacelen = 0;
+    config.quiet = 0;
+    config.loop = 0;
+    config.idlemode = 0;
+    config.latency = NULL;
+    config.clients = listCreate();
+    config.latency = zmalloc(sizeof(int)*(MAX_LATENCY+1));
+
+    config.hostip = "127.0.0.1";
+    config.hostport = 6379;
+
+    parseOptions(argc,argv);
+
+    if (config.keepalive == 0) {
+        printf("WARNING: keepalive disabled, you probably need 'echo 1 > /proc/sys/net/ipv4/tcp_tw_reuse' for Linux and 'sudo sysctl -w net.inet.tcp.msl=1000' for Mac OS X in order to use a lot of clients/requests\n");
+    }
+
+    if (config.idlemode) {
+        printf("Creating %d idle connections and waiting forever (Ctrl+C when done)\n", config.numclients);
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdsempty();
+        prepareClientForReply(c,REPLY_RETCODE); /* will never receive it */
+        createMissingClients(c);
+        aeMain(config.el);
+        /* and will wait for every */
+    }
+
+    do {
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscatprintf(c->obuf,"SET foo_rand000000000000 %d\r\n",config.datasize);
+        {
+            char *data = zmalloc(config.datasize+2);
+            memset(data,'x',config.datasize);
+            data[config.datasize] = '\r';
+            data[config.datasize+1] = '\n';
+            c->obuf = sdscatlen(c->obuf,data,config.datasize+2);
+        }
+        prepareClientForReply(c,REPLY_RETCODE);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("SET");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"GET foo_rand000000000000\r\n");
+        prepareClientForReply(c,REPLY_BULK);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("GET");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"INCR counter_rand000000000000\r\n");
+        prepareClientForReply(c,REPLY_INT);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("INCR");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
+        prepareClientForReply(c,REPLY_INT);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LPUSH");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LPOP mylist\r\n");
+        prepareClientForReply(c,REPLY_BULK);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LPOP");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"PING\r\n");
+        prepareClientForReply(c,REPLY_RETCODE);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("PING");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LPUSH mylist 3\r\nbar\r\n");
+        prepareClientForReply(c,REPLY_RETCODE);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LPUSH (again, in order to bench LRANGE)");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 99\r\n");
+        prepareClientForReply(c,REPLY_MBULK);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LRANGE (first 100 elements)");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 299\r\n");
+        prepareClientForReply(c,REPLY_MBULK);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LRANGE (first 300 elements)");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 449\r\n");
+        prepareClientForReply(c,REPLY_MBULK);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LRANGE (first 450 elements)");
+
+        prepareForBenchmark();
+        c = createClient();
+        if (!c) exit(1);
+        c->obuf = sdscat(c->obuf,"LRANGE mylist 0 599\r\n");
+        prepareClientForReply(c,REPLY_MBULK);
+        createMissingClients(c);
+        aeMain(config.el);
+        endBenchmark("LRANGE (first 600 elements)");
+
+        printf("\n");
+    } while(config.loop);
+
+    return 0;
+}