source: branches/samba-3.5.x/source4/torture/raw/lockbench.c

/* 
   Unix SMB/CIFS implementation.

   locking benchmark

   Copyright (C) Andrew Tridgell 2006
   
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.
   
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "includes.h"
#include "torture/torture.h"
#include "libcli/raw/libcliraw.h"
#include "libcli/raw/raw_proto.h"
#include "system/time.h"
#include "system/filesys.h"
#include "libcli/libcli.h"
#include "torture/util.h"
#include "lib/events/events.h"
#include "lib/cmdline/popt_common.h"
#include "libcli/composite/composite.h"
#include "libcli/smb_composite/smb_composite.h"
#include "libcli/resolve/resolve.h"
#include "param/param.h"

#define BASEDIR "\\benchlock"
#define FNAME BASEDIR "\\lock.dat"

static int nprocs;
static int lock_failed;
static int num_connected;

enum lock_stage {LOCK_INITIAL, LOCK_LOCK, LOCK_UNLOCK};

struct benchlock_state {
        struct torture_context *tctx;
        struct tevent_context *ev;
        struct smbcli_tree *tree;
        TALLOC_CTX *mem_ctx;
        int client_num;
        int fnum;
        enum lock_stage stage;
        int lock_offset;
        int unlock_offset;
        int count;
        int lastcount;
        struct smbcli_request *req;
        struct smb_composite_connect reconnect;
        struct tevent_timer *te;

        /* these are used for reconnections */
        const char **dest_ports;
        const char *dest_host;
        const char *called_name;
        const char *service_type;
};

static void lock_completion(struct smbcli_request *);

/*
  send the next lock request
*/
static void lock_send(struct benchlock_state *state)
{
        union smb_lock io;
        struct smb_lock_entry lock;

        switch (state->stage) {
        case LOCK_INITIAL:
                io.lockx.in.ulock_cnt = 0;
                io.lockx.in.lock_cnt = 1;
                state->lock_offset = 0;
                state->unlock_offset = 0;
                lock.offset = state->lock_offset;
                break;
        case LOCK_LOCK:
                io.lockx.in.ulock_cnt = 0;
                io.lockx.in.lock_cnt = 1;
                state->lock_offset = (state->lock_offset+1)%(nprocs+1);
                lock.offset = state->lock_offset;
                break;
        case LOCK_UNLOCK:
                io.lockx.in.ulock_cnt = 1;
                io.lockx.in.lock_cnt = 0;
                lock.offset = state->unlock_offset;
                state->unlock_offset = (state->unlock_offset+1)%(nprocs+1);
                break;
        }

        lock.count = 1;
        lock.pid = state->tree->session->pid;

        io.lockx.level = RAW_LOCK_LOCKX;
        io.lockx.in.mode = LOCKING_ANDX_LARGE_FILES;
        io.lockx.in.timeout = 100000;
        io.lockx.in.locks = &lock;
        io.lockx.in.file.fnum = state->fnum;

        state->req = smb_raw_lock_send(state->tree, &io);
        if (state->req == NULL) {
                DEBUG(0,("Failed to setup lock\n"));
                lock_failed++;
        }
        state->req->async.private_data = state;
        state->req->async.fn      = lock_completion;
}

static void reopen_connection(struct tevent_context *ev, struct tevent_timer *te, 
                              struct timeval t, void *private_data);


static void reopen_file(struct tevent_context *ev, struct tevent_timer *te, 
                                      struct timeval t, void *private_data)
{
        struct benchlock_state *state = (struct benchlock_state *)private_data;

        /* reestablish our open file */
        state->fnum = smbcli_open(state->tree, FNAME, O_RDWR|O_CREAT, DENY_NONE);
        if (state->fnum == -1) {
                printf("Failed to open %s on connection %d\n", FNAME, state->client_num);
                exit(1);
        }

        num_connected++;

        DEBUG(0,("reconnect to %s finished (%u connected)\n", state->dest_host,
                 num_connected));

        state->stage = LOCK_INITIAL;
        lock_send(state);
}

/*
  complete an async reconnect
 */
static void reopen_connection_complete(struct composite_context *ctx)
{
        struct benchlock_state *state = (struct benchlock_state *)ctx->async.private_data;
        NTSTATUS status;
        struct smb_composite_connect *io = &state->reconnect;

        status = smb_composite_connect_recv(ctx, state->mem_ctx);
        if (!NT_STATUS_IS_OK(status)) {
                talloc_free(state->te);
                state->te = event_add_timed(state->ev, state->mem_ctx, 
                                            timeval_current_ofs(1,0), 
                                            reopen_connection, state);
                return;
        }

        talloc_free(state->tree);
        state->tree = io->out.tree;

        /* do the reopen as a separate event */
        event_add_timed(state->ev, state->mem_ctx, timeval_zero(), reopen_file, state);
}

        

/*
  reopen a connection
 */
static void reopen_connection(struct tevent_context *ev, struct tevent_timer *te, 
                              struct timeval t, void *private_data)
{
        struct benchlock_state *state = (struct benchlock_state *)private_data;
        struct composite_context *ctx;
        struct smb_composite_connect *io = &state->reconnect;
        char *host, *share;

        state->te = NULL;

        if (!torture_get_conn_index(state->client_num, state->mem_ctx, state->tctx, &host, &share)) {
                DEBUG(0,("Can't find host/share for reconnect?!\n"));
                exit(1);
        }

        io->in.dest_host    = state->dest_host;
        io->in.dest_ports   = state->dest_ports;
        io->in.gensec_settings = lp_gensec_settings(state->mem_ctx, state->tctx->lp_ctx);
        io->in.socket_options = lp_socket_options(state->tctx->lp_ctx);
        io->in.called_name  = state->called_name;
        io->in.service      = share;
        io->in.service_type = state->service_type;
        io->in.credentials  = cmdline_credentials;
        io->in.fallback_to_anonymous = false;
        io->in.workgroup    = lp_workgroup(state->tctx->lp_ctx);
        io->in.iconv_convenience = lp_iconv_convenience(state->tctx->lp_ctx);
        lp_smbcli_options(state->tctx->lp_ctx, &io->in.options);
        lp_smbcli_session_options(state->tctx->lp_ctx, &io->in.session_options);

        /* kill off the remnants of the old connection */
        talloc_free(state->tree);
        state->tree = NULL;

        ctx = smb_composite_connect_send(io, state->mem_ctx, 
                                         lp_resolve_context(state->tctx->lp_ctx),
                                         state->ev);
        if (ctx == NULL) {
                DEBUG(0,("Failed to setup async reconnect\n"));
                exit(1);
        }

        ctx->async.fn = reopen_connection_complete;
        ctx->async.private_data = state;
}


/*
  called when a lock completes
*/
static void lock_completion(struct smbcli_request *req)
{
        struct benchlock_state *state = (struct benchlock_state *)req->async.private_data;
        NTSTATUS status = smbcli_request_simple_recv(req);
        state->req = NULL;
        if (!NT_STATUS_IS_OK(status)) {
                if (NT_STATUS_EQUAL(status, NT_STATUS_END_OF_FILE) ||
                    NT_STATUS_EQUAL(status, NT_STATUS_LOCAL_DISCONNECT)) {
                        talloc_free(state->tree);
                        state->tree = NULL;
                        num_connected--;        
                        DEBUG(0,("reopening connection to %s\n", state->dest_host));
                        talloc_free(state->te);
                        state->te = event_add_timed(state->ev, state->mem_ctx, 
                                                    timeval_current_ofs(1,0), 
                                                    reopen_connection, state);
                } else {
                        DEBUG(0,("Lock failed - %s\n", nt_errstr(status)));
                        lock_failed++;
                }
                return;
        }

        switch (state->stage) {
        case LOCK_INITIAL:
                state->stage = LOCK_LOCK;
                break;
        case LOCK_LOCK:
                state->stage = LOCK_UNLOCK;
                break;
        case LOCK_UNLOCK:
                state->stage = LOCK_LOCK;
                break;
        }

        state->count++;
        lock_send(state);
}


static void echo_completion(struct smbcli_request *req)
{
        struct benchlock_state *state = (struct benchlock_state *)req->async.private_data;
        NTSTATUS status = smbcli_request_simple_recv(req);
        if (NT_STATUS_EQUAL(status, NT_STATUS_END_OF_FILE) ||
            NT_STATUS_EQUAL(status, NT_STATUS_LOCAL_DISCONNECT)) {
                talloc_free(state->tree);
                state->tree = NULL;
                num_connected--;        
                DEBUG(0,("reopening connection to %s\n", state->dest_host));
                talloc_free(state->te);
                state->te = event_add_timed(state->ev, state->mem_ctx, 
                                            timeval_current_ofs(1,0), 
                                            reopen_connection, state);
        }
}

static void report_rate(struct tevent_context *ev, struct tevent_timer *te, 
                        struct timeval t, void *private_data)
{
        struct benchlock_state *state = talloc_get_type(private_data, 
                                                        struct benchlock_state);
        int i;
        for (i=0;i<nprocs;i++) {
                printf("%5u ", (unsigned)(state[i].count - state[i].lastcount));
                state[i].lastcount = state[i].count;
        }
        printf("\r");
        fflush(stdout);
        event_add_timed(ev, state, timeval_current_ofs(1, 0), report_rate, state);

        /* send an echo on each interface to ensure it stays alive - this helps
           with IP takeover */
        for (i=0;i<nprocs;i++) {
                struct smb_echo p;
                struct smbcli_request *req;

                if (!state[i].tree) {
                        continue;
                }

                p.in.repeat_count = 1;
                p.in.size = 0;
                p.in.data = NULL;
                req = smb_raw_echo_send(state[i].tree->session->transport, &p);
                req->async.private_data = &state[i];
                req->async.fn      = echo_completion;
        }
}

/* 
   benchmark locking calls
*/
bool torture_bench_lock(struct torture_context *torture)
{
        bool ret = true;
        TALLOC_CTX *mem_ctx = talloc_new(torture);
        int i, j;
        int timelimit = torture_setting_int(torture, "timelimit", 10);
        struct timeval tv;
        struct benchlock_state *state;
        int total = 0, minops=0;
        struct smbcli_state *cli;
        bool progress;
        off_t offset;
        int initial_locks = torture_setting_int(torture, "initial_locks", 0);

        progress = torture_setting_bool(torture, "progress", true);

        nprocs = torture_setting_int(torture, "nprocs", 4);

        state = talloc_zero_array(mem_ctx, struct benchlock_state, nprocs);

        printf("Opening %d connections\n", nprocs);
        for (i=0;i<nprocs;i++) {
                state[i].tctx = torture;
                state[i].mem_ctx = talloc_new(state);
                state[i].client_num = i;
                state[i].ev = torture->ev;
                if (!torture_open_connection_ev(&cli, i, torture, torture->ev)) {
                        return false;
                }
                talloc_steal(mem_ctx, state);
                state[i].tree = cli->tree;
                state[i].dest_host = talloc_strdup(state[i].mem_ctx, 
                                                   cli->tree->session->transport->socket->hostname);
                state[i].dest_ports = talloc_array(state[i].mem_ctx, 
                                                   const char *, 2);
                state[i].dest_ports[0] = talloc_asprintf(state[i].dest_ports, 
                                                         "%u", 
                                                         cli->tree->session->transport->socket->port);
                state[i].dest_ports[1] = NULL;
                state[i].called_name  = talloc_strdup(state[i].mem_ctx,
                                                      cli->tree->session->transport->called.name);
                state[i].service_type = talloc_strdup(state[i].mem_ctx,
                                                      cli->tree->device);
        }

        num_connected = i;

        if (!torture_setup_dir(cli, BASEDIR)) {
                goto failed;
        }

        for (i=0;i<nprocs;i++) {
                state[i].fnum = smbcli_open(state[i].tree, 
                                            FNAME, 
                                            O_RDWR|O_CREAT, DENY_NONE);
                if (state[i].fnum == -1) {
                        printf("Failed to open %s on connection %d\n", FNAME, i);
                        goto failed;
                }

                /* Optionally, lock initial_locks for each proc beforehand. */
                if (i == 0 && initial_locks > 0) {
                        printf("Initializing %d locks on each proc.\n",
                            initial_locks);
                }

                for (j = 0; j < initial_locks; j++) {
                        offset = (0xFFFFFED8LLU * (i+2)) + j;
                        if (!NT_STATUS_IS_OK(smbcli_lock64(state[i].tree,
                            state[i].fnum, offset, 1, 0, WRITE_LOCK))) {
                                printf("Failed initializing, lock=%d\n", j);
                                goto failed;
                        }
                }

                state[i].stage = LOCK_INITIAL;
                lock_send(&state[i]);
        }

        tv = timeval_current(); 

        if (progress) {
                event_add_timed(torture->ev, state, timeval_current_ofs(1, 0), report_rate, state);
        }

        printf("Running for %d seconds\n", timelimit);
        while (timeval_elapsed(&tv) < timelimit) {
                event_loop_once(torture->ev);

                if (lock_failed) {
                        DEBUG(0,("locking failed\n"));
                        goto failed;
                }
        }

        printf("%.2f ops/second\n", total/timeval_elapsed(&tv));
        minops = state[0].count;
        for (i=0;i<nprocs;i++) {
                printf("[%d] %u ops\n", i, state[i].count);
                if (state[i].count < minops) minops = state[i].count;
        }
        if (minops < 0.5*total/nprocs) {
                printf("Failed: unbalanced locking\n");
                goto failed;
        }

        for (i=0;i<nprocs;i++) {
                talloc_free(state[i].req);
                smb_raw_exit(state[i].tree->session);
        }

        smbcli_deltree(state[0].tree, BASEDIR);
        talloc_free(mem_ctx);
        printf("\n");
        return ret;

failed:
        smbcli_deltree(state[0].tree, BASEDIR);
        talloc_free(mem_ctx);
        return false;
}