forked from StoneAtom/StoneDB
277 lines
8.0 KiB
C++
277 lines
8.0 KiB
C++
/* Copyright (c) 2015, 2021, Oracle and/or its affiliates.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#include <stdlib.h>
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#include <my_global.h>
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#include "my_sys.h" // my_write, my_malloc
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#include <mysql/plugin.h>
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static const char *log_filename= "test_x_sessions_deinit";
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#define MAX_SESSIONS 128
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#define STRING_BUFFER_SIZE 512
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#define WRITE_STR(format) my_snprintf(buffer,sizeof(buffer),format); \
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my_write(outfile,(uchar*)buffer,strlen(buffer),MYF(0))
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#define WRITE_VAL(format,value) my_snprintf(buffer,sizeof(buffer),format,value); \
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my_write(outfile,(uchar*)buffer,strlen(buffer),MYF(0))
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static const char *sep = "========================================================================\n";
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#define WRITE_SEP() my_write(outfile, (uchar*)sep, strlen(sep), MYF(0))
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/* SQL (system) variable to control number of sessions */
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/* Only effective at start od mysqld by setting it as option --loose-... */
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int nb_sessions;
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static MYSQL_SYSVAR_INT (nb_sessions, nb_sessions, PLUGIN_VAR_RQCMDARG,
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"number of sessions", NULL, NULL, 1, 1, 500, 0);
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static struct st_mysql_sys_var *test_services_sysvars[]= {
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MYSQL_SYSVAR(nb_sessions),
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NULL
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};
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static File outfile;
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static void test_session_open(void *p)
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{
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char buffer[STRING_BUFFER_SIZE];
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DBUG_ENTER("test_session_open");
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MYSQL_SESSION sessions[MAX_SESSIONS];
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void *plugin_ctx= NULL;
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WRITE_VAL("nb_sessions = %d\n", nb_sessions);
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/* Open sessions: Must pass */
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for (int i= 0; i < nb_sessions; i++)
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{
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WRITE_VAL("srv_session_open %d - ", i+1);
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sessions[i]= srv_session_open(NULL, plugin_ctx);
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if (!sessions[i])
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{
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WRITE_STR("Failed\n");
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}
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else
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{
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WRITE_STR("Success\n");
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}
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}
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DBUG_VOID_RETURN;
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}
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static void test_session(void *p)
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{
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char buffer[STRING_BUFFER_SIZE];
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DBUG_ENTER("test_session");
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MYSQL_SESSION sessions[MAX_SESSIONS];
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void *plugin_ctx= NULL;
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bool session_ret= false;
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WRITE_VAL("nb_sessions = %d\n", nb_sessions);
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/* Open sessions: Must pass */
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for (int i= 0; i < nb_sessions; i++)
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{
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WRITE_VAL("srv_session_open %d - ", i+1);
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sessions[i]= srv_session_open(NULL, plugin_ctx);
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if (!sessions[i])
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{
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WRITE_STR("Failed\n");
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}
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else
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{
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WRITE_STR("Success\n");
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}
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}
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/* close sessions: Must pass */
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for (int i= 0; i < nb_sessions; i++)
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{
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WRITE_VAL("srv_session_close %d - ", nb_sessions-1-i+1); //1 indexed
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session_ret= srv_session_close(sessions[nb_sessions-1-i]);
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if (session_ret)
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{
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WRITE_STR("Failed\n");
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}
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else
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{
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WRITE_STR("Success\n");
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}
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}
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/* close sessions: Fail as not opened */
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for (int i= 0; i < nb_sessions; i++)
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{
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WRITE_VAL("srv_session_close %d - ", nb_sessions-1-i+1); //1 indexed
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session_ret= srv_session_close(sessions[nb_sessions-1-i]);
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if (session_ret)
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{
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WRITE_STR("Failed\n");
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}
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else
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{
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WRITE_STR("Success\n");
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}
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}
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DBUG_VOID_RETURN;
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}
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struct test_thread_context
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{
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my_thread_handle thread;
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void *p;
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bool thread_finished;
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void (*test_function)(void *);
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};
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static void* test_sql_threaded_wrapper(void *param)
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{
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char buffer[STRING_BUFFER_SIZE];
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struct test_thread_context *context= (struct test_thread_context*) param;
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WRITE_SEP();
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WRITE_STR("init thread\n");
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if (srv_session_init_thread(context->p))
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my_plugin_log_message(&context->p, MY_ERROR_LEVEL, "srv_session_init_thread failed.");
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context->test_function(context->p);
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WRITE_STR("deinit thread\n");
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srv_session_deinit_thread();
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context->thread_finished= true;
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return NULL;
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}
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static void create_log_file(const char * log_name)
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{
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char filename[FN_REFLEN];
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fn_format(filename, log_name, "", ".log",
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MY_REPLACE_EXT | MY_UNPACK_FILENAME);
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unlink(filename);
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outfile= my_open(filename, O_CREAT|O_RDWR, MYF(0));
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}
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static void test_in_spawned_thread(void *p, void (*test_function)(void *))
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{
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my_thread_attr_t attr; /* Thread attributes */
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my_thread_attr_init(&attr);
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(void) my_thread_attr_setdetachstate(&attr, MY_THREAD_CREATE_JOINABLE);
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struct test_thread_context context;
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context.p= p;
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context.thread_finished= false;
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context.test_function= test_function;
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/* now create the thread and call test_session within the thread. */
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if (my_thread_create(&(context.thread), &attr, test_sql_threaded_wrapper, &context) != 0)
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my_plugin_log_message(&p, MY_ERROR_LEVEL, "Could not create test session thread");
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else
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my_thread_join(&context.thread, NULL);
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}
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static int test_session_service_plugin_init(void *p)
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{
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DBUG_ENTER("test_session_service_plugin_init");
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my_plugin_log_message(&p, MY_INFORMATION_LEVEL, "Installation.");
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DBUG_RETURN(0);
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}
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static int test_session_service_plugin_deinit(void *p)
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{
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char buffer[STRING_BUFFER_SIZE];
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DBUG_ENTER("test_session_service_plugin_deinit");
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my_plugin_log_message(&p, MY_INFORMATION_LEVEL, "Uninstallation.");
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create_log_file(log_filename);
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WRITE_SEP();
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WRITE_STR("Test in a server thread\n");
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test_session(p);
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/* Test in a new thread */
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WRITE_STR("Follows threaded run\n");
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test_in_spawned_thread(p, test_session);
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WRITE_STR("Follows threaded run and leaves open session (Bug#21966621)\n");
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// Bug#21966621 - Leave session open at srv thread exit which is doing the release in following way:
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// 1) Lock LOCK_collection while doing release callback for every session
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// 2) Second attempt of LOCK_collection fails while removing session by the callback.
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// While exiting both function LOCK_collection is left in invalid state because
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// it was released 2 times, lock 1 time
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// 3) at next attempt of LOCK_collection usage causes deadlock
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test_in_spawned_thread(p, test_session_open); // step 1, 2
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test_in_spawned_thread(p, test_session); // step 3
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WRITE_STR("Follows threaded run and leaves open session (Bug#21983102)\n");
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// Bug#21983102 - iterates through sessions list in which elements are removed
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// thus the iterator becomes invalid causing random crashes and
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// hangings
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test_in_spawned_thread(p, test_session_open);
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my_close(outfile, MYF(0));
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DBUG_RETURN(0);
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}
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struct st_mysql_daemon test_session_service_plugin=
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{ MYSQL_DAEMON_INTERFACE_VERSION };
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/*
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Plugin library descriptor
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*/
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mysql_declare_plugin(test_daemon)
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{
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MYSQL_DAEMON_PLUGIN,
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&test_session_service_plugin,
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"test_x_sessions_deinit",
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"Horst Hunger, Andrey Hristov",
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"Test session service in deinit",
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PLUGIN_LICENSE_GPL,
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test_session_service_plugin_init, /* Plugin Init */
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test_session_service_plugin_deinit, /* Plugin Deinit */
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0x0100, /* 1.0 */
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NULL, /* status variables */
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test_services_sysvars, /* system variables */
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NULL, /* config options */
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0, /* flags */
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}
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mysql_declare_plugin_end;
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