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/* -*- mode: C++; c-basic-offset: 4; indent-tabs-mode: nil -*- */
// vim: ft=cpp:expandtab:ts=8:sw=4:softtabstop=4:
#ident "$Id$"
#ident "Copyright (c) 2007-2013 Tokutek Inc. All rights reserved."
#ident "The technology is licensed by the Massachusetts Institute of Technology, Rutgers State University of New Jersey, and the Research Foundation of State University of New York at Stony Brook under United States of America Serial No. 11/760379 and to the patents and/or patent applications resulting from it."
#include "test.h"
// verify that the DB_RMW flag on cursor create grabs write locks for cursor set operations
static void test_create_rmw(DB_ENV *env, DB *db, int k, uint32_t txn1_flags, uint32_t txn2_flags, int expect_r) {
int r;
DB_TXN *txn1 = NULL;
r = env->txn_begin(env, NULL, &txn1, 0); assert_zero(r);
DB_TXN *txn2 = NULL;
r = env->txn_begin(env, NULL, &txn2, 0); assert_zero(r);
DBC *c1 = NULL;
r = db->cursor(db, txn1, &c1, txn1_flags); assert_zero(r);
DBC *c2 = NULL;
r = db->cursor(db, txn2, &c2, txn2_flags); assert_zero(r);
DBT key; dbt_init(&key, &k, sizeof k);
DBT val; memset(&val, 0, sizeof val);
r = c1->c_get(c1, &key, &val, DB_SET); assert_zero(r);
r = c2->c_get(c2, &key, &val, DB_SET); assert(r == expect_r);
r = c1->c_close(c1); assert_zero(r);
r = c2->c_close(c2); assert_zero(r);
r = txn1->commit(txn1, 0); assert_zero(r);
r = txn2->commit(txn2, 0); assert_zero(r);
}
// verify that the DB_RMW flag to the cursor set operations grabs write locks
static void test_set_rmw(DB_ENV *env, DB *db, int k, uint32_t txn1_flags, uint32_t txn2_flags, int expect_r) {
int r;
DB_TXN *txn1 = NULL;
r = env->txn_begin(env, NULL, &txn1, 0); assert_zero(r);
DB_TXN *txn2 = NULL;
r = env->txn_begin(env, NULL, &txn2, 0); assert_zero(r);
DBC *c1 = NULL;
r = db->cursor(db, txn1, &c1, 0); assert_zero(r);
DBC *c2 = NULL;
r = db->cursor(db, txn2, &c2, 0); assert_zero(r);
DBT key; dbt_init(&key, &k, sizeof k);
DBT val; memset(&val, 0, sizeof val);
r = c1->c_get(c1, &key, &val, DB_SET + txn1_flags); assert_zero(r);
r = c2->c_get(c2, &key, &val, DB_SET + txn2_flags); assert(r == expect_r);
r = c1->c_close(c1); assert_zero(r);
r = c2->c_close(c2); assert_zero(r);
r = txn1->commit(txn1, 0); assert_zero(r);
r = txn2->commit(txn2, 0); assert_zero(r);
}
int test_main(int argc, char * const argv[]) {
int r;
const char *env_dir = TOKU_TEST_FILENAME;
const char *db_filename = "rmwtest";
parse_args(argc, argv);
char rm_cmd[strlen(env_dir) + strlen("rm -rf ") + 1];
snprintf(rm_cmd, sizeof(rm_cmd), "rm -rf %s", env_dir);
r = system(rm_cmd); assert_zero(r);
r = toku_os_mkdir(env_dir, S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH); assert_zero(r);
DB_ENV *env = NULL;
r = db_env_create(&env, 0); assert_zero(r);
int env_open_flags = DB_CREATE | DB_PRIVATE | DB_INIT_MPOOL | DB_INIT_TXN | DB_INIT_LOCK | DB_INIT_LOG;
r = env->open(env, env_dir, env_open_flags, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); assert_zero(r);
// create the db
DB *db = NULL;
r = db_create(&db, env, 0); assert_zero(r);
DB_TXN *create_txn = NULL;
r = env->txn_begin(env, NULL, &create_txn, 0); assert_zero(r);
r = db->open(db, create_txn, db_filename, NULL, DB_BTREE, DB_CREATE, S_IRUSR | S_IWUSR | S_IRGRP | S_IROTH); assert_zero(r);
r = create_txn->commit(create_txn, 0); assert_zero(r);
DB_TXN *write_txn = NULL;
r = env->txn_begin(env, NULL, &write_txn, 0); assert_zero(r);
int k = htonl(42); int v = 42;
DBT key; dbt_init(&key, &k, sizeof k);
DBT val; dbt_init(&val, &v, sizeof v);
r = db->put(db, write_txn, &key, &val, DB_NOOVERWRITE); assert_zero(r);
r = write_txn->commit(write_txn, 0); assert_zero(r);
#ifdef BLOCKING_ROW_LOCKS_READS_NOT_SHARED
test_set_rmw(env, db, k, 0, 0, DB_LOCK_NOTGRANTED);
#else
test_set_rmw(env, db, k, 0, 0, 0);
#endif
test_set_rmw(env, db, k, 0, DB_RMW, DB_LOCK_NOTGRANTED);
test_set_rmw(env, db, k, DB_RMW, 0, DB_LOCK_NOTGRANTED);
test_set_rmw(env, db, k, DB_RMW, DB_RMW, DB_LOCK_NOTGRANTED);
#ifdef BLOCKING_ROW_LOCKS_READS_NOT_SHARED
test_create_rmw(env, db, k, 0, 0, DB_LOCK_NOTGRANTED);
#else
test_create_rmw(env, db, k, 0, 0, 0);
#endif
test_create_rmw(env, db, k, 0, DB_RMW, DB_LOCK_NOTGRANTED);
test_create_rmw(env, db, k, DB_RMW, 0, DB_LOCK_NOTGRANTED);
test_create_rmw(env, db, k, DB_RMW, DB_RMW, DB_LOCK_NOTGRANTED);
r = db->close(db, 0); assert_zero(r);
r = env->close(env, 0); assert_zero(r);
return 0;
}
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