summaryrefslogtreecommitdiffstats
path: root/storage/maria/unittest/lockman-t.c
diff options
context:
space:
mode:
Diffstat (limited to 'storage/maria/unittest/lockman-t.c')
-rw-r--r--storage/maria/unittest/lockman-t.c303
1 files changed, 303 insertions, 0 deletions
diff --git a/storage/maria/unittest/lockman-t.c b/storage/maria/unittest/lockman-t.c
new file mode 100644
index 00000000..222618ac
--- /dev/null
+++ b/storage/maria/unittest/lockman-t.c
@@ -0,0 +1,303 @@
+/* Copyright (C) 2006 MySQL AB
+
+ 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; version 2 of the License.
+
+ 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, write to the Free Software
+ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA */
+
+/*
+ lockman for row and table locks
+*/
+
+/* #define EXTRA_VERBOSE */
+
+#include <tap.h>
+
+#include <my_global.h>
+#include <my_sys.h>
+#include <lf.h>
+#include "../lockman.h"
+
+#define Nlos 100
+LOCK_OWNER loarray[Nlos];
+pthread_mutex_t mutexes[Nlos];
+pthread_cond_t conds[Nlos];
+LOCKMAN lockman;
+
+#ifndef EXTRA_VERBOSE
+#define print_lockhash(X) /* no-op */
+#define DIAG(X) /* no-op */
+#else
+#define DIAG(X) diag X
+#endif
+
+LOCK_OWNER *loid2lo(uint16 loid)
+{
+ return loarray+loid-1;
+}
+
+#define unlock_all(O) diag("lo" #O "> release all locks"); \
+ lockman_release_locks(&lockman, loid2lo(O));print_lockhash(&lockman)
+#define test_lock(O, R, L, S, RES) \
+ ok(lockman_getlock(&lockman, loid2lo(O), R, L) == RES, \
+ "lo" #O "> " S "lock resource " #R " with " #L "-lock"); \
+ print_lockhash(&lockman)
+#define lock_ok_a(O, R, L) \
+ test_lock(O, R, L, "", GOT_THE_LOCK)
+#define lock_ok_i(O, R, L) \
+ test_lock(O, R, L, "", GOT_THE_LOCK_NEED_TO_LOCK_A_SUBRESOURCE)
+#define lock_ok_l(O, R, L) \
+ test_lock(O, R, L, "", GOT_THE_LOCK_NEED_TO_INSTANT_LOCK_A_SUBRESOURCE)
+#define lock_conflict(O, R, L) \
+ test_lock(O, R, L, "cannot ", DIDNT_GET_THE_LOCK);
+
+void test_lockman_simple()
+{
+ /* simple */
+ lock_ok_a(1, 1, S);
+ lock_ok_i(2, 2, IS);
+ lock_ok_i(1, 2, IX);
+ /* lock escalation */
+ lock_ok_a(1, 1, X);
+ lock_ok_i(2, 2, IX);
+ /* failures */
+ lock_conflict(2, 1, X);
+ unlock_all(2);
+ lock_ok_a(1, 2, S);
+ lock_ok_a(1, 2, IS);
+ lock_ok_a(1, 2, LS);
+ lock_ok_i(1, 3, IX);
+ lock_ok_a(2, 3, LS);
+ lock_ok_i(1, 3, IX);
+ lock_ok_l(2, 3, IS);
+ unlock_all(1);
+ unlock_all(2);
+
+ lock_ok_i(1, 1, IX);
+ lock_conflict(2, 1, S);
+ lock_ok_a(1, 1, LS);
+ unlock_all(1);
+ unlock_all(2);
+
+ lock_ok_i(1, 1, IX);
+ lock_ok_a(2, 1, LS);
+ lock_ok_a(1, 1, LS);
+ lock_ok_i(1, 1, IX);
+ lock_ok_i(3, 1, IS);
+ unlock_all(1);
+ unlock_all(2);
+ unlock_all(3);
+
+ lock_ok_i(1, 4, IS);
+ lock_ok_i(2, 4, IS);
+ lock_ok_i(3, 4, IS);
+ lock_ok_a(3, 4, LS);
+ lock_ok_i(4, 4, IS);
+ lock_conflict(4, 4, IX);
+ lock_conflict(2, 4, IX);
+ lock_ok_a(1, 4, LS);
+ unlock_all(1);
+ unlock_all(2);
+ unlock_all(3);
+ unlock_all(4);
+
+ lock_ok_i(1, 1, IX);
+ lock_ok_i(2, 1, IX);
+ lock_conflict(1, 1, S);
+ lock_conflict(2, 1, X);
+ unlock_all(1);
+ unlock_all(2);
+}
+
+int rt_num_threads;
+int litmus;
+int thread_number= 0, timeouts= 0;
+void run_test(const char *test, pthread_handler handler, int n, int m)
+{
+ pthread_t *threads;
+ ulonglong now= my_getsystime();
+ int i;
+
+ thread_number= timeouts= 0;
+ litmus= 0;
+
+ threads= (pthread_t *)my_malloc(sizeof(void *)*n, MYF(0));
+ if (!threads)
+ {
+ diag("Out of memory");
+ abort();
+ }
+
+ diag("Running %s with %d threads, %d iterations... ", test, n, m);
+ rt_num_threads= n;
+ for (i= 0; i < n ; i++)
+ if (pthread_create(threads+i, 0, handler, &m))
+ {
+ diag("Could not create thread");
+ abort();
+ }
+ for (i= 0 ; i < n ; i++)
+ pthread_join(threads[i], 0);
+ now= my_getsystime()-now;
+ ok(litmus == 0, "Finished %s in %g secs (%d)", test, ((double)now)/1e7, litmus);
+ my_free((void*)threads, MYF(0));
+}
+
+pthread_mutex_t rt_mutex;
+int Nrows= 100;
+int Ntables= 10;
+int table_lock_ratio= 10;
+enum lockman_lock_type lock_array[6]= {S, X, LS, LX, IS, IX};
+char *lock2str[6]= {"S", "X", "LS", "LX", "IS", "IX"};
+char *res2str[4]= {
+ "DIDN'T GET THE LOCK",
+ "GOT THE LOCK",
+ "GOT THE LOCK NEED TO LOCK A SUBRESOURCE",
+ "GOT THE LOCK NEED TO INSTANT LOCK A SUBRESOURCE"};
+pthread_handler_t test_lockman(void *arg)
+{
+ int m= (*(int *)arg);
+ uint x, loid, row, table, res, locklevel, timeout= 0;
+ LOCK_OWNER *lo;
+
+ pthread_mutex_lock(&rt_mutex);
+ loid= ++thread_number;
+ pthread_mutex_unlock(&rt_mutex);
+ lo= loid2lo(loid);
+
+ for (x= ((int)(intptr)(&m)); m > 0; m--)
+ {
+ x= (x*3628273133 + 1500450271) % 9576890767; /* three prime numbers */
+ row= x % Nrows + Ntables;
+ table= row % Ntables;
+ locklevel= (x/Nrows) & 3;
+ if (table_lock_ratio && (x/Nrows/4) % table_lock_ratio == 0)
+ { /* table lock */
+ res= lockman_getlock(&lockman, lo, table, lock_array[locklevel]);
+ DIAG(("loid %2d, table %d, lock %s, res %s", loid, table,
+ lock2str[locklevel], res2str[res]));
+ if (res == DIDNT_GET_THE_LOCK)
+ {
+ lockman_release_locks(&lockman, lo);
+ DIAG(("loid %2d, release all locks", loid));
+ timeout++;
+ continue;
+ }
+ DBUG_ASSERT(res == GOT_THE_LOCK);
+ }
+ else
+ { /* row lock */
+ locklevel&= 1;
+ res= lockman_getlock(&lockman, lo, table, lock_array[locklevel + 4]);
+ DIAG(("loid %2d, row %d, lock %s, res %s", loid, row,
+ lock2str[locklevel+4], res2str[res]));
+ switch (res)
+ {
+ case DIDNT_GET_THE_LOCK:
+ lockman_release_locks(&lockman, lo);
+ DIAG(("loid %2d, release all locks", loid));
+ timeout++;
+ continue;
+ case GOT_THE_LOCK:
+ continue;
+ case GOT_THE_LOCK_NEED_TO_INSTANT_LOCK_A_SUBRESOURCE:
+ /* not implemented, so take a regular lock */
+ case GOT_THE_LOCK_NEED_TO_LOCK_A_SUBRESOURCE:
+ res= lockman_getlock(&lockman, lo, row, lock_array[locklevel]);
+ DIAG(("loid %2d, ROW %d, lock %s, res %s", loid, row,
+ lock2str[locklevel], res2str[res]));
+ if (res == DIDNT_GET_THE_LOCK)
+ {
+ lockman_release_locks(&lockman, lo);
+ DIAG(("loid %2d, release all locks", loid));
+ timeout++;
+ continue;
+ }
+ DBUG_ASSERT(res == GOT_THE_LOCK);
+ continue;
+ default:
+ DBUG_ASSERT(0);
+ }
+ }
+ }
+
+ lockman_release_locks(&lockman, lo);
+
+ pthread_mutex_lock(&rt_mutex);
+ rt_num_threads--;
+ timeouts+= timeout;
+ if (!rt_num_threads)
+ diag("number of timeouts: %d", timeouts);
+ pthread_mutex_unlock(&rt_mutex);
+
+ return 0;
+}
+
+int main()
+{
+ int i;
+
+ my_init();
+ pthread_mutex_init(&rt_mutex, 0);
+
+ plan(35);
+
+ lockman_init(&lockman, &loid2lo, 50);
+
+ for (i= 0; i < Nlos; i++)
+ {
+ loarray[i].pins= lf_alloc_get_pins(&lockman.alloc);
+ loarray[i].all_locks= 0;
+ loarray[i].waiting_for= 0;
+ pthread_mutex_init(&mutexes[i], MY_MUTEX_INIT_FAST);
+ pthread_cond_init (&conds[i], 0);
+ loarray[i].mutex= &mutexes[i];
+ loarray[i].cond= &conds[i];
+ loarray[i].loid= i+1;
+ }
+
+ test_lockman_simple();
+
+#define CYCLES 10000
+#define THREADS Nlos /* don't change this line */
+
+ /* mixed load, stress-test with random locks */
+ Nrows= 100;
+ Ntables= 10;
+ table_lock_ratio= 10;
+ run_test("\"random lock\" stress test", test_lockman, THREADS, CYCLES);
+
+ /* "real-life" simulation - many rows, no table locks */
+ Nrows= 1000000;
+ Ntables= 10;
+ table_lock_ratio= 0;
+ run_test("\"real-life\" simulation test", test_lockman, THREADS, CYCLES*10);
+
+ for (i= 0; i < Nlos; i++)
+ {
+ lockman_release_locks(&lockman, &loarray[i]);
+ pthread_mutex_destroy(loarray[i].mutex);
+ pthread_cond_destroy(loarray[i].cond);
+ lf_pinbox_put_pins(loarray[i].pins);
+ }
+
+ {
+ ulonglong now= my_getsystime();
+ lockman_destroy(&lockman);
+ now= my_getsystime()-now;
+ diag("lockman_destroy: %g secs", ((double)now)/1e7);
+ }
+
+ pthread_mutex_destroy(&rt_mutex);
+ my_end(0);
+ return exit_status();
+}
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-09 12:53:37 +0000