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-rw-r--r--storage/perfschema/pfs_server.cc299
1 files changed, 299 insertions, 0 deletions
diff --git a/storage/perfschema/pfs_server.cc b/storage/perfschema/pfs_server.cc
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+++ b/storage/perfschema/pfs_server.cc
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+/* Copyright (c) 2008, 2012, Oracle and/or its affiliates. All rights reserved.
+
+ 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,
+ 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA */
+
+/**
+ @file storage/perfschema/pfs_server.cc
+ Private interface for the server (implementation).
+*/
+
+#include "my_global.h"
+#include "my_sys.h"
+#include "mysys_err.h"
+#include "pfs_server.h"
+#include "pfs.h"
+#include "pfs_global.h"
+#include "pfs_instr_class.h"
+#include "pfs_instr.h"
+#include "pfs_events_waits.h"
+#include "pfs_events_stages.h"
+#include "pfs_events_statements.h"
+#include "pfs_timer.h"
+#include "pfs_setup_actor.h"
+#include "pfs_setup_object.h"
+#include "pfs_host.h"
+#include "pfs_user.h"
+#include "pfs_account.h"
+#include "pfs_defaults.h"
+#include "pfs_digest.h"
+
+PFS_global_param pfs_param;
+
+PFS_table_stat PFS_table_stat::g_reset_template;
+
+C_MODE_START
+static void destroy_pfs_thread(void *key);
+C_MODE_END
+
+static void cleanup_performance_schema(void);
+void cleanup_instrument_config(void);
+
+struct PSI_bootstrap*
+initialize_performance_schema(PFS_global_param *param)
+{
+ pfs_initialized= false;
+
+ PFS_table_stat::g_reset_template.reset();
+ global_idle_stat.reset();
+ global_table_io_stat.reset();
+ global_table_lock_stat.reset();
+
+ pfs_automated_sizing(param);
+
+ if (! param->m_enabled)
+ {
+ /*
+ The performance schema is disabled in the startup command line.
+ All the instrumentation is turned off.
+ */
+ return NULL;
+ }
+
+ init_timers();
+ PFS_atomic::init();
+
+ init_event_name_sizing(param);
+ register_global_classes();
+
+ if (pthread_key_create(&THR_PFS, destroy_pfs_thread))
+ return NULL;
+
+ THR_PFS_initialized= true;
+
+ if (init_sync_class(param->m_mutex_class_sizing,
+ param->m_rwlock_class_sizing,
+ param->m_cond_class_sizing) ||
+ init_thread_class(param->m_thread_class_sizing) ||
+ init_table_share(param->m_table_share_sizing) ||
+ init_file_class(param->m_file_class_sizing) ||
+ init_stage_class(param->m_stage_class_sizing) ||
+ init_statement_class(param->m_statement_class_sizing) ||
+ init_socket_class(param->m_socket_class_sizing) ||
+ init_instruments(param) ||
+ init_events_waits_history_long(
+ param->m_events_waits_history_long_sizing) ||
+ init_events_stages_history_long(
+ param->m_events_stages_history_long_sizing) ||
+ init_events_statements_history_long(
+ param->m_events_statements_history_long_sizing) ||
+ init_file_hash() ||
+ init_table_share_hash() ||
+ init_setup_actor(param) ||
+ init_setup_actor_hash() ||
+ init_setup_object(param) ||
+ init_setup_object_hash() ||
+ init_host(param) ||
+ init_host_hash() ||
+ init_user(param) ||
+ init_user_hash() ||
+ init_account(param) ||
+ init_account_hash() ||
+ init_digest(param) ||
+ init_digest_hash())
+ {
+ /*
+ The performance schema initialization failed.
+ Free the memory used, and disable the instrumentation.
+ */
+ cleanup_performance_schema();
+ return NULL;
+ }
+
+ pfs_initialized= true;
+
+ /** Default values for SETUP_CONSUMERS */
+ flag_events_stages_current= param->m_consumer_events_stages_current_enabled;
+ flag_events_stages_history= param->m_consumer_events_stages_history_enabled;
+ flag_events_stages_history_long= param->m_consumer_events_stages_history_long_enabled;
+ flag_events_statements_current= param->m_consumer_events_statements_current_enabled;
+ flag_events_statements_history= param->m_consumer_events_statements_history_enabled;
+ flag_events_statements_history_long= param->m_consumer_events_statements_history_long_enabled;
+ flag_events_waits_current= param->m_consumer_events_waits_current_enabled;
+ flag_events_waits_history= param->m_consumer_events_waits_history_enabled;
+ flag_events_waits_history_long= param->m_consumer_events_waits_history_long_enabled;
+ flag_global_instrumentation= param->m_consumer_global_instrumentation_enabled;
+ flag_thread_instrumentation= param->m_consumer_thread_instrumentation_enabled;
+ flag_statements_digest= param->m_consumer_statement_digest_enabled;
+
+ install_default_setup(&PFS_bootstrap);
+ return &PFS_bootstrap;
+}
+
+static void destroy_pfs_thread(void *key)
+{
+ PFS_thread* pfs= reinterpret_cast<PFS_thread*> (key);
+ DBUG_ASSERT(pfs);
+ /*
+ This automatic cleanup is a last resort and best effort to avoid leaks,
+ and may not work on windows due to the implementation of pthread_key_create().
+ Please either use:
+ - my_thread_end()
+ - or PSI_server->delete_current_thread()
+ in the instrumented code, to explicitly cleanup the instrumentation.
+
+ Avoid invalid writes when the main() thread completes after shutdown:
+ the memory pointed by pfs is already released.
+ */
+ if (pfs_initialized)
+ destroy_thread(pfs);
+}
+
+static void cleanup_performance_schema(void)
+{
+ cleanup_instrument_config();
+/* Disabled: Bug#5666
+ cleanup_instruments();
+ cleanup_sync_class();
+ cleanup_thread_class();
+ cleanup_table_share();
+ cleanup_file_class();
+ cleanup_stage_class();
+ cleanup_statement_class();
+ cleanup_socket_class();
+ cleanup_events_waits_history_long();
+ cleanup_events_stages_history_long();
+ cleanup_events_statements_history_long();
+ cleanup_table_share_hash();
+ cleanup_file_hash();
+ cleanup_setup_actor();
+ cleanup_setup_actor_hash();
+ cleanup_setup_object();
+ cleanup_setup_object_hash();
+ cleanup_host();
+ cleanup_host_hash();
+ cleanup_user();
+ cleanup_user_hash();
+ cleanup_account();
+ cleanup_account_hash();
+ cleanup_digest();
+ PFS_atomic::cleanup();
+*/
+}
+
+void shutdown_performance_schema(void)
+{
+ pfs_initialized= false;
+ cleanup_performance_schema();
+#if 0
+ /*
+ Be careful to not delete un-initialized keys,
+ this would affect key 0, which is THR_KEY_mysys,
+ */
+ if (THR_PFS_initialized)
+ {
+ my_pthread_setspecific_ptr(THR_PFS, NULL);
+ pthread_key_delete(THR_PFS);
+ THR_PFS_initialized= false;
+ }
+#endif
+}
+
+/**
+ Initialize the dynamic array used to hold PFS_INSTRUMENT configuration
+ options.
+*/
+void init_pfs_instrument_array()
+{
+ my_init_dynamic_array(&pfs_instr_config_array, sizeof(PFS_instr_config*), 10, 10);
+ pfs_instr_config_state= PFS_INSTR_CONFIG_ALLOCATED;
+}
+
+/**
+ Deallocate the PFS_INSTRUMENT array. Use an atomic compare-and-swap to ensure
+ that it is deallocated only once in the chaotic environment of server shutdown.
+*/
+void cleanup_instrument_config()
+{
+ int desired_state= PFS_INSTR_CONFIG_ALLOCATED;
+
+ /* Ignore if another thread has already deallocated the array */
+ if (my_atomic_cas32(&pfs_instr_config_state, &desired_state, PFS_INSTR_CONFIG_DEALLOCATED))
+ delete_dynamic(&pfs_instr_config_array);
+}
+
+/**
+ Process one performance_schema_instrument configuration string. Isolate the
+ instrument name, evaluate the option value, and store them in a dynamic array.
+ Return 'false' for success, 'true' for error.
+
+ @param name Instrument name
+ @param value Configuration option: 'on', 'off', etc.
+ @return 0 for success, non zero for errors
+*/
+
+int add_pfs_instr_to_array(const char* name, const char* value)
+{
+ int name_length= strlen(name);
+ int value_length= strlen(value);
+
+ /* Allocate structure plus string buffers plus null terminators */
+ PFS_instr_config* e = (PFS_instr_config*)my_malloc(sizeof(PFS_instr_config)
+ + name_length + 1 + value_length + 1, MYF(MY_WME));
+ if (!e) return 1;
+
+ /* Copy the instrument name */
+ e->m_name= (char*)e + sizeof(PFS_instr_config);
+ memcpy(e->m_name, name, name_length);
+ e->m_name_length= name_length;
+ e->m_name[name_length]= '\0';
+
+ /* Set flags accordingly */
+ if (!my_strcasecmp(&my_charset_latin1, value, "counted"))
+ {
+ e->m_enabled= true;
+ e->m_timed= false;
+ }
+ else
+ if (!my_strcasecmp(&my_charset_latin1, value, "true") ||
+ !my_strcasecmp(&my_charset_latin1, value, "on") ||
+ !my_strcasecmp(&my_charset_latin1, value, "1") ||
+ !my_strcasecmp(&my_charset_latin1, value, "yes"))
+ {
+ e->m_enabled= true;
+ e->m_timed= true;
+ }
+ else
+ if (!my_strcasecmp(&my_charset_latin1, value, "false") ||
+ !my_strcasecmp(&my_charset_latin1, value, "off") ||
+ !my_strcasecmp(&my_charset_latin1, value, "0") ||
+ !my_strcasecmp(&my_charset_latin1, value, "no"))
+ {
+ e->m_enabled= false;
+ e->m_timed= false;
+ }
+ else
+ {
+ my_free(e);
+ return 1;
+ }
+
+ /* Add to the array of default startup options */
+ if (insert_dynamic(&pfs_instr_config_array, &e))
+ {
+ my_free(e);
+ return 1;
+ }
+
+ return 0;
+}
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