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 /* test_nstd_msync.c - parallel writes & locking test */
 /*
  * Copyright 2011-2017 Howard Chu, Symas Corp.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted only as authorized by the OpenLDAP
  * Public License.
  *
  * A copy of this license is available in the file LICENSE in the
  * top-level directory of the distribution or, alternatively, at
  * <http://www.OpenLDAP.org/license.html>.
  */
 
 /* Just like mtest.c, but using a subDB instead of the main DB */
 
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
 #include <unistd.h>
 
 #include "exdb.h"
 
 #define E(expr) CHECK((rc = (expr)) == EDB_SUCCESS, #expr)
 #define RES(err, expr) ((rc = expr) == (err) || (CHECK(!rc, #expr), 0))
 #define CHECK(test, msg) ((test) ? (void)0 : ((void)fprintf(stderr, \
     "%s:%d: %s: %s\n", __FILE__, __LINE__, msg, edb_strerror(rc)), abort()))
 
 int main(int argc, char **argv)
 {
     int i = 0, j = 0, rc;
     EDB_env *env;
     EDB_dbi dbi;
     EDB_val key, data;
     EDB_txn *txn;
     EDB_stat mst;
     EDB_cursor *cursor;
     int count;
     int *values;
     char sval[32] = "";
     int sleeps;
 
     if (argc < 2)
     {
         fprintf(stderr, "usage: %s <sync_seconds_sleeps> [R]\n where R - start with RO tran\n", argv[0]);
         exit(1);
     }
     sleeps = atoi(argv[1]);
 
     srand(time(NULL));
 
     count = (rand()%384) + 64;
     values = (int *)malloc(count*sizeof(int));
 
     for(i = 0;i<count;i++) {
         values[i] = rand()%1024;
     }
 
     E(edb_env_create(&env));
     E(edb_env_set_maxreaders(env, 2));
     E(edb_env_set_mapsize(env, 10485760));
     E(edb_env_set_maxdbs(env, 4));
     E(edb_env_open(env, "./testdb", 0, 0664));
 
     if (2==argc)
     {
     fprintf(stderr, "About to begin RW....\n");
     E(edb_txn_begin(env, NULL, 0, &txn));
     fprintf(stderr, "After begin RW....\n");
     E(edb_dbi_open(txn, "id1", EDB_CREATE, &dbi));
     }
     else
     {
     fprintf(stderr, "About to begin RO (env)....\n");
     E(edb_txn_begin(env, NULL, EDB_RDONLY, &txn));
     fprintf(stderr, "After begin RO (env)....\n");
     E(edb_dbi_open(txn, "id1", 0, &dbi));
     }
 
     fprintf(stderr, "About to commit (env)....\n");
     E(edb_txn_commit(txn));
     fprintf(stderr, "About commit (env)....\n");
     
    
     key.mv_size = sizeof(int);
     key.mv_data = sval;
 
     /* if argc > 2 then skip the first phase, and run directly to 
      * to read only tran
      */
     if (2==argc)
     {
     fprintf(stderr, "About to begin RW....\n");
     E(edb_txn_begin(env, NULL, 0, &txn));
     fprintf(stderr, "After begin RW....\n");
     fprintf(stderr, "Adding %d values -> about to sleep (2) %d sec\n", count, sleeps);
     sleep(atoi(argv[1]));
 
     fprintf(stderr, "COUNT=%d, After sleep (1) %d sec\n", count, sleeps);
     for (i=0;i<count;i++) { 
         sprintf(sval, "%03x %d foo bar %d", values[i], values[i], sleeps);
         data.mv_size = sizeof(sval);
         data.mv_data = sval;
         if (RES(EDB_KEYEXIST, edb_put(txn, dbi, &key, &data, EDB_NOOVERWRITE)))
             j++;
     }
 
     if (j) fprintf(stderr, "%d duplicates skipped\n", j);
     
     fprintf(stderr, "About to begin RW COMMIT....\n");
     E(edb_txn_commit(txn));
     fprintf(stderr, "After RW COMMIT....\n");
     }
 
     E(edb_env_stat(env, &mst));
 
     
     fprintf(stderr, "About to begin RO TRAN....\n");
     E(edb_txn_begin(env, NULL, EDB_RDONLY, &txn));
     fprintf(stderr, "After RO TRAN....\n");
 
     E(edb_cursor_open(txn, dbi, &cursor));
     while ((rc = edb_cursor_get(cursor, &key, &data, EDB_NEXT)) == 0) {
         fprintf(stderr, "key: %p %.*s, data: %p %.*s\n",
             key.mv_data,  (int) key.mv_size,  (char *) key.mv_data,
             data.mv_data, (int) data.mv_size, (char *) data.mv_data);
     }
     CHECK(rc == EDB_NOTFOUND, "edb_cursor_get");
     edb_cursor_close(cursor);
     edb_txn_abort(txn);
 
     j=0;
     key.mv_data = sval;
     for (i= count - 1; i > -1; i-= (rand()%5)) {
         j++;
         txn=NULL;
 
         fprintf(stderr, "About to begin RW TRAN....\n");
         E(edb_txn_begin(env, NULL, 0, &txn));
         fprintf(stderr, "After begin RW TRAN....\n");
 
         sprintf(sval, "%03x ", values[i]);
         if (RES(EDB_NOTFOUND, edb_del(txn, dbi, &key, NULL))) {
             j--;
             fprintf(stderr, "About to ABORT RW TRAN....\n");
             edb_txn_abort(txn);
             fprintf(stderr, "After ABORT RW TRAN....\n");
         } else {
             fprintf(stderr, "About to COMMIT RW TRAN....\n");
             E(edb_txn_commit(txn));
             fprintf(stderr, "After COMMIT RW TRAN....\n");
         }
     }
     free(values);
     fprintf(stderr, "Deleted %d values\n", j);
 
     E(edb_env_stat(env, &mst));
     E(edb_txn_begin(env, NULL, EDB_RDONLY, &txn));
     E(edb_cursor_open(txn, dbi, &cursor));
     fprintf(stderr, "Cursor next\n");
     while ((rc = edb_cursor_get(cursor, &key, &data, EDB_NEXT)) == 0) {
         fprintf(stderr, "key: %.*s, data: %.*s\n",
             (int) key.mv_size,  (char *) key.mv_data,
             (int) data.mv_size, (char *) data.mv_data);
     }
     CHECK(rc == EDB_NOTFOUND, "edb_cursor_get");
     fprintf(stderr, "Cursor prev\n");
     while ((rc = edb_cursor_get(cursor, &key, &data, EDB_PREV)) == 0) {
         fprintf(stderr, "key: %.*s, data: %.*s\n",
             (int) key.mv_size,  (char *) key.mv_data,
             (int) data.mv_size, (char *) data.mv_data);
     }
     CHECK(rc == EDB_NOTFOUND, "edb_cursor_get");
     edb_cursor_close(cursor);
     edb_txn_abort(txn);
 
     edb_dbi_close(env, dbi);
     edb_env_close(env);
     return 0;
 }
 

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