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WL#4259 - Debug Sync Facility

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Backport from 6.0 to 5.1.
Only those sync points are included, which are used in debug_sync.test.

  The Debug Sync Facility allows to place synchronization points
  in the code:
  
  open_tables(...)
  
  DEBUG_SYNC(thd, "after_open_tables");
  
  lock_tables(...)
  
  When activated, a sync point can
  
  - Send a signal and/or
  - Wait for a signal
  
  Nomenclature:
  
  - signal:            A value of a global variable that persists
                       until overwritten by a new signal. The global
                       variable can also be seen as a "signal post"
                       or "flag mast". Then the signal is what is
                       attached to the "signal post" or "flag mast".
  
  - send a signal:     Assign the value (the signal) to the global
                       variable ("set a flag") and broadcast a
                       global condition to wake those waiting for
                       a signal.
  
  - wait for a signal: Loop over waiting for the global condition until
                       the global value matches the wait-for signal.
  
  Please find more information in the top comment in debug_sync.cc
  or in the worklog entry.


.bzrignore:
  WL#4259 - Debug Sync Facility
  Added the symbolic link libmysqld/debug_sync.cc.
CMakeLists.txt:
  WL#4259 - Debug Sync Facility
  Added definition for ENABLED_DEBUG_SYNC.
configure.in:
  WL#4259 - Debug Sync Facility
  Added definition for ENABLED_DEBUG_SYNC.
include/my_sys.h:
  WL#4259 - Debug Sync Facility
  Added definition for the DEBUG_SYNC_C macro.
libmysqld/CMakeLists.txt:
  WL#4259 - Debug Sync Facility
  Added sql/debug_sync.cc.
libmysqld/Makefile.am:
  WL#4259 - Debug Sync Facility
  Added sql/debug_sync.cc.
mysql-test/include/have_debug_sync.inc:
  WL#4259 - Debug Sync Facility
  New include file.
mysql-test/mysql-test-run.pl:
  WL#4259 - Debug Sync Facility
  Added option --debug_sync_timeout.
mysql-test/r/debug_sync.result:
  WL#4259 - Debug Sync Facility
  New test result.
mysql-test/r/have_debug_sync.require:
  WL#4259 - Debug Sync Facility
  New require file.
mysql-test/t/debug_sync.test:
  WL#4259 - Debug Sync Facility
  New test file.
mysys/my_static.c:
  WL#4259 - Debug Sync Facility
  Added definition for debug_sync_C_callback_ptr.
mysys/thr_lock.c:
  WL#4259 - Debug Sync Facility
  Added sync point "wait_for_lock".
sql/CMakeLists.txt:
  WL#4259 - Debug Sync Facility
  Added debug_sync.cc and debug_sync.h.
sql/Makefile.am:
  WL#4259 - Debug Sync Facility
  Added debug_sync.cc and debug_sync.h.
sql/debug_sync.cc:
  WL#4259 - Debug Sync Facility
  New source file.
sql/debug_sync.h:
  WL#4259 - Debug Sync Facility
  New header file.
sql/mysqld.cc:
  WL#4259 - Debug Sync Facility
  Added opt_debug_sync_timeout.
  Added calls to debug_sync_init() and debug_sync_end().
  Fixed a purecov comment (unrelated).
sql/set_var.cc:
  WL#4259 - Debug Sync Facility
  Added server variable "debug_sync".
sql/set_var.h:
  WL#4259 - Debug Sync Facility
  Added declaration for server variable "debug_sync".
sql/share/errmsg.txt:
  WL#4259 - Debug Sync Facility
  Added error messages ER_DEBUG_SYNC_TIMEOUT and ER_DEBUG_SYNC_HIT_LIMIT.
sql/sql_base.cc:
  WL#4259 - Debug Sync Facility
  Added sync points "after_flush_unlock" and "before_lock_tables_takes_lock".
sql/sql_class.cc:
  WL#4259 - Debug Sync Facility
  Added initialization for debug_sync_control to THD::THD.
  Added calls to debug_sync_init_thread() and debug_sync_end_thread().
sql/sql_class.h:
  WL#4259 - Debug Sync Facility
  Added element debug_sync_control to THD.
storage/myisam/myisamchk.c:
  Fixed a typo in an error message string (unrelated).
This commit is contained in:
Ingo Struewing
2009-09-29 17:38:40 +02:00
parent 6a89842e36
commit 4d57b851a0
25 changed files with 2846 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
mysql-test/include/have_debug_sync.inc Normal file
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@ -0,0 +1,5 @@
--require r/have_debug_sync.require
disable_query_log;
let $value= query_get_value(SHOW VARIABLES LIKE 'debug_sync', Value, 1);
eval SELECT ('$value' LIKE 'ON %') AS debug_sync;
enable_query_log;

9
mysql-test/mysql-test-run.pl
View File

@ -226,6 +226,7 @@ my @default_valgrind_args= ("--show-reachable=yes");
my @valgrind_args;
my $opt_valgrind_path;
my $opt_callgrind;
my $opt_debug_sync_timeout= 300; # Default timeout for WAIT_FOR actions.
our $opt_warnings= 1;
@ -867,6 +868,7 @@ sub command_line_setup {
'valgrind-option=s' => \@valgrind_args,
'valgrind-path=s' => \$opt_valgrind_path,
'callgrind' => \$opt_callgrind,
'debug-sync-timeout=i' => \$opt_debug_sync_timeout,
# Directories
'tmpdir=s' => \$opt_tmpdir,
@ -4170,6 +4172,11 @@ sub mysqld_arguments ($$$) {
mtr_add_arg($args, "%s", "--core-file");
}
# Enable the debug sync facility, set default wait timeout.
# Facility stays disabled if timeout value is zero.
mtr_add_arg($args, "--loose-debug-sync-timeout=%s",
$opt_debug_sync_timeout);
return $args;
}
@ -5280,6 +5287,8 @@ Misc options
to turn off.
sleep=SECONDS Passed to mysqltest, will be used as fixed sleep time
debug-sync-timeout=NUM Set default timeout for WAIT_FOR debug sync
actions. Disable facility with NUM=0.
gcov Collect coverage information after the test.
The result is a gcov file per source and header file.
experimental=<file> Refer to list of tests considered experimental;

277
mysql-test/r/debug_sync.result Normal file
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@ -0,0 +1,277 @@
SET DEBUG_SYNC= 'RESET';
DROP TABLE IF EXISTS t1;
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: ''
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 EXECUTE 2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2';
SET DEBUG_SYNC='p0 SIGNAL s1 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 EXECUTE 2';
SET DEBUG_SYNC='p0 SIGNAL s1 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6';
SET DEBUG_SYNC='p0 WAIT_FOR s2 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2 EXECUTE 2';
SET DEBUG_SYNC='p0 WAIT_FOR s2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2';
SET DEBUG_SYNC='p0 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 CLEAR';
SET DEBUG_SYNC='p0 TEST';
SET DEBUG_SYNC='RESET';
set debug_sync='p0 signal s1 wait_for s2 timeout 6 execute 2 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2 timeout 6 execute 2';
set debug_sync='p0 signal s1 wait_for s2 timeout 6 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2 timeout 6';
set debug_sync='p0 signal s1 wait_for s2 execute 2 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2 execute 2';
set debug_sync='p0 signal s1 wait_for s2 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2';
set debug_sync='p0 signal s1 execute 2 hit_limit 3';
set debug_sync='p0 signal s1 execute 2';
set debug_sync='p0 signal s1 hit_limit 3';
set debug_sync='p0 signal s1';
set debug_sync='p0 wait_for s2 timeout 6 execute 2 hit_limit 3';
set debug_sync='p0 wait_for s2 timeout 6 execute 2';
set debug_sync='p0 wait_for s2 timeout 6 hit_limit 3';
set debug_sync='p0 wait_for s2 timeout 6';
set debug_sync='p0 wait_for s2 execute 2 hit_limit 3';
set debug_sync='p0 wait_for s2 execute 2';
set debug_sync='p0 wait_for s2 hit_limit 3';
set debug_sync='p0 wait_for s2';
set debug_sync='p0 hit_limit 3';
set debug_sync='p0 clear';
set debug_sync='p0 test';
set debug_sync='reset';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6
EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC=' p0 SIGNAL s1 WAIT_FOR s2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 ';
SET DEBUG_SYNC=' p0 SIGNAL s1 WAIT_FOR s2 ';
SET DEBUG_SYNC=' p0 SIGNAL s1 WAIT_FOR s2 ';
SET DEBUG_SYNC='';
ERROR 42000: Missing synchronization point name
SET DEBUG_SYNC=' ';
ERROR 42000: Missing synchronization point name
SET DEBUG_SYNC='p0';
ERROR 42000: Missing action after synchronization point name 'p0'
SET DEBUG_SYNC='p0 EXECUTE 2';
ERROR 42000: Missing action before EXECUTE
SET DEBUG_SYNC='p0 TIMEOUT 6 EXECUTE 2';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 TIMEOUT 6';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1';
ERROR 42000: Illegal or out of order stuff: 'SIGNAL'
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1 EXECUTE 2';
ERROR 42000: Illegal or out of order stuff: 'SIGNAL'
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1 TIMEOUT 6 EXECUTE 2';
ERROR 42000: Illegal or out of order stuff: 'SIGNAL'
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1 TIMEOUT 6';
ERROR 42000: Illegal or out of order stuff: 'SIGNAL'
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 SIGNAL s1 EXECUTE 2';
ERROR 42000: Illegal or out of order stuff: 'SIGNAL'
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 SIGNAL s1';
ERROR 42000: Illegal or out of order stuff: 'SIGNAL'
SET DEBUG_SYNC='p0 TIMEOUT 6 WAIT_FOR s2 EXECUTE 2';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 TIMEOUT 6 WAIT_FOR s2';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 SIGNAL s1 TIMEOUT 6 EXECUTE 2';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 SIGNAL s1 TIMEOUT 6';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 EXECUTE 2 SIGNAL s1 TIMEOUT 6';
ERROR 42000: Missing action before EXECUTE
SET DEBUG_SYNC='p0 TIMEOUT 6 SIGNAL s1';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUT'
SET DEBUG_SYNC='p0 EXECUTE 2 TIMEOUT 6 SIGNAL s1';
ERROR 42000: Missing action before EXECUTE
SET DEBUG_SYNC='p0 CLEAR HIT_LIMIT 3';
ERROR 42000: Nothing must follow action CLEAR
SET DEBUG_SYNC='CLEAR';
ERROR 42000: Missing action after synchronization point name 'CLEAR'
SET DEBUG_SYNC='p0 CLEAR p0';
ERROR 42000: Nothing must follow action CLEAR
SET DEBUG_SYNC='TEST';
ERROR 42000: Missing action after synchronization point name 'TEST'
SET DEBUG_SYNC='p0 TEST p0';
ERROR 42000: Nothing must follow action TEST
SET DEBUG_SYNC='p0 RESET';
ERROR 42000: Illegal or out of order stuff: 'RESET'
SET DEBUG_SYNC='RESET p0';
ERROR 42000: Illegal or out of order stuff: 'p0'
SET DEBUG_SYNC='p0 RESET p0';
ERROR 42000: Illegal or out of order stuff: 'RESET'
SET DEBUG_SYNC='p0 SIGNAL ';
ERROR 42000: Missing signal name after action SIGNAL
SET DEBUG_SYNC='p0 WAIT_FOR ';
ERROR 42000: Missing signal name after action WAIT_FOR
SET DEBUG_SYNC='p0 SIGNAL s1 EXECUTE ';
ERROR 42000: Missing valid number after EXECUTE
SET DEBUG_SYNCx='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
ERROR HY000: Unknown system variable 'DEBUG_SYNCx'
SET DEBUG_SYNC='p0 SIGNAx s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
ERROR 42000: Illegal or out of order stuff: 'SIGNAx'
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOx s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
ERROR 42000: Illegal or out of order stuff: 'WAIT_FOx'
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUx 0 EXECUTE 2 HIT_LIMIT 3';
ERROR 42000: Illegal or out of order stuff: 'TIMEOUx'
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTx 2 HIT_LIMIT 3';
ERROR 42000: Illegal or out of order stuff: 'EXECUTx'
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIx 3';
ERROR 42000: Illegal or out of order stuff: 'HIT_LIMIx'
SET DEBUG_SYNC='p0 CLEARx';
ERROR 42000: Illegal or out of order stuff: 'CLEARx'
SET DEBUG_SYNC='p0 TESTx';
ERROR 42000: Illegal or out of order stuff: 'TESTx'
SET DEBUG_SYNC='RESETx';
ERROR 42000: Missing action after synchronization point name 'RESETx'
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 0x6 EXECUTE 2 HIT_LIMIT 3';
ERROR 42000: Missing valid number after TIMEOUT
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 EXECUTE 0x2 HIT_LIMIT 3';
ERROR 42000: Missing valid number after EXECUTE
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 7 EXECUTE 2 HIT_LIMIT 0x3';
ERROR 42000: Missing valid number after HIT_LIMIT
SET DEBUG_SYNC= 7;
ERROR 42000: Incorrect argument type to variable 'debug_sync'
SET GLOBAL DEBUG_SYNC= 'p0 CLEAR';
ERROR HY000: Variable 'debug_sync' is a SESSION variable and can't be used with SET GLOBAL
SET @myvar= 'now SIGNAL from_myvar';
SET DEBUG_SYNC= @myvar;
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 'from_myvar'
SET DEBUG_SYNC= LEFT('now SIGNAL from_function_cut_here', 24);
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 'from_function'
SET DEBUG_SYNC= 'now SIGNAL something';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 'something'
SET DEBUG_SYNC= 'now WAIT_FOR nothing TIMEOUT 0';
Warnings:
Warning #### debug sync point wait timed out
SET DEBUG_SYNC= 'now SIGNAL nothing';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 'nothing'
SET DEBUG_SYNC= 'now WAIT_FOR nothing TIMEOUT 0';
SET DEBUG_SYNC= 'now SIGNAL something EXECUTE 0';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 'nothing'
SET DEBUG_SYNC= 'now WAIT_FOR anotherthing TIMEOUT 0 EXECUTE 0';
SET DEBUG_SYNC= 'now HIT_LIMIT 1';
ERROR HY000: debug sync point hit limit reached
SET DEBUG_SYNC= 'RESET';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: ''
SET DEBUG_SYNC= 'p1abcd SIGNAL s1 EXECUTE 2';
SET DEBUG_SYNC= 'p2abc SIGNAL s2 EXECUTE 2';
SET DEBUG_SYNC= 'p9abcdef SIGNAL s9 EXECUTE 2';
SET DEBUG_SYNC= 'p4a SIGNAL s4 EXECUTE 2';
SET DEBUG_SYNC= 'p5abcde SIGNAL s5 EXECUTE 2';
SET DEBUG_SYNC= 'p6ab SIGNAL s6 EXECUTE 2';
SET DEBUG_SYNC= 'p7 SIGNAL s7 EXECUTE 2';
SET DEBUG_SYNC= 'p8abcdef SIGNAL s8 EXECUTE 2';
SET DEBUG_SYNC= 'p3abcdef SIGNAL s3 EXECUTE 2';
SET DEBUG_SYNC= 'p4a TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's4'
SET DEBUG_SYNC= 'p1abcd TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's1'
SET DEBUG_SYNC= 'p7 TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's7'
SET DEBUG_SYNC= 'p9abcdef TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's9'
SET DEBUG_SYNC= 'p3abcdef TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's3'
SET DEBUG_SYNC= 'p1abcd CLEAR';
SET DEBUG_SYNC= 'p2abc CLEAR';
SET DEBUG_SYNC= 'p5abcde CLEAR';
SET DEBUG_SYNC= 'p6ab CLEAR';
SET DEBUG_SYNC= 'p8abcdef CLEAR';
SET DEBUG_SYNC= 'p9abcdef CLEAR';
SET DEBUG_SYNC= 'p3abcdef CLEAR';
SET DEBUG_SYNC= 'p4a CLEAR';
SET DEBUG_SYNC= 'p7 CLEAR';
SET DEBUG_SYNC= 'p1abcd TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's3'
SET DEBUG_SYNC= 'p7 TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's3'
SET DEBUG_SYNC= 'p9abcdef TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: 's3'
SET DEBUG_SYNC= 'RESET';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
Variable_name Value
debug_sync ON - current signal: ''
CREATE USER mysqltest_1@localhost;
GRANT SUPER ON *.* TO mysqltest_1@localhost;
connection con1, mysqltest_1
SET DEBUG_SYNC= 'RESET';
connection default
DROP USER mysqltest_1@localhost;
CREATE USER mysqltest_2@localhost;
GRANT ALL ON *.* TO mysqltest_2@localhost;
REVOKE SUPER ON *.* FROM mysqltest_2@localhost;
connection con1, mysqltest_2
SET DEBUG_SYNC= 'RESET';
ERROR 42000: Access denied; you need the SUPER privilege for this operation
connection default
DROP USER mysqltest_2@localhost;
SET DEBUG_SYNC= 'RESET';
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (c1 INT);
connection con1
SET DEBUG_SYNC= 'before_lock_tables_takes_lock
SIGNAL opened WAIT_FOR flushed';
INSERT INTO t1 VALUES(1);
connection default
SET DEBUG_SYNC= 'now WAIT_FOR opened';
SET DEBUG_SYNC= 'after_flush_unlock SIGNAL flushed';
FLUSH TABLE t1;
connection con1
connection default
DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (c1 INT);
LOCK TABLE t1 WRITE;
connection con1
SET DEBUG_SYNC= 'wait_for_lock SIGNAL locked EXECUTE 2';
INSERT INTO t1 VALUES (1);
connection default
SET DEBUG_SYNC= 'now WAIT_FOR locked';
UNLOCK TABLES;
connection con1
retrieve INSERT result.
connection default
DROP TABLE t1;
SET DEBUG_SYNC= 'RESET';

2
mysql-test/r/have_debug_sync.require Normal file
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@ -0,0 +1,2 @@
debug_sync
1

420
mysql-test/t/debug_sync.test Normal file
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@ -0,0 +1,420 @@
###################### t/debug_sync.test ###############################
# #
# Testing of the Debug Sync Facility. #
# #
# There is important documentation within sql/debug_sync.cc #
# #
# Used objects in this test case: #
# p0 - synchronization point 0. Non-existent dummy sync point. #
# s1 - signal 1. #
# s2 - signal 2. #
# #
# Creation: #
# 2008-02-18 istruewing #
# #
########################################################################
#
# We need the Debug Sync Facility.
#
--source include/have_debug_sync.inc
#
# We are checking privileges, which the embedded server cannot do.
#
--source include/not_embedded.inc
#
# Preparative cleanup.
#
--disable_warnings
SET DEBUG_SYNC= 'RESET';
DROP TABLE IF EXISTS t1;
--enable_warnings
#
# Show the special system variable.
# It shows ON or OFF depending on the command line option --debug-sync.
# The test case assumes it is ON (command line option present).
#
SHOW VARIABLES LIKE 'DEBUG_SYNC';
#
# Syntax. Valid forms.
#
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 EXECUTE 2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2';
SET DEBUG_SYNC='p0 SIGNAL s1 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1 EXECUTE 2';
SET DEBUG_SYNC='p0 SIGNAL s1 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 SIGNAL s1';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6';
SET DEBUG_SYNC='p0 WAIT_FOR s2 EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2 EXECUTE 2';
SET DEBUG_SYNC='p0 WAIT_FOR s2 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 WAIT_FOR s2';
SET DEBUG_SYNC='p0 HIT_LIMIT 3';
SET DEBUG_SYNC='p0 CLEAR';
SET DEBUG_SYNC='p0 TEST';
SET DEBUG_SYNC='RESET';
#
# Syntax. Valid forms. Lower case.
#
set debug_sync='p0 signal s1 wait_for s2 timeout 6 execute 2 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2 timeout 6 execute 2';
set debug_sync='p0 signal s1 wait_for s2 timeout 6 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2 timeout 6';
set debug_sync='p0 signal s1 wait_for s2 execute 2 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2 execute 2';
set debug_sync='p0 signal s1 wait_for s2 hit_limit 3';
set debug_sync='p0 signal s1 wait_for s2';
set debug_sync='p0 signal s1 execute 2 hit_limit 3';
set debug_sync='p0 signal s1 execute 2';
set debug_sync='p0 signal s1 hit_limit 3';
set debug_sync='p0 signal s1';
set debug_sync='p0 wait_for s2 timeout 6 execute 2 hit_limit 3';
set debug_sync='p0 wait_for s2 timeout 6 execute 2';
set debug_sync='p0 wait_for s2 timeout 6 hit_limit 3';
set debug_sync='p0 wait_for s2 timeout 6';
set debug_sync='p0 wait_for s2 execute 2 hit_limit 3';
set debug_sync='p0 wait_for s2 execute 2';
set debug_sync='p0 wait_for s2 hit_limit 3';
set debug_sync='p0 wait_for s2';
set debug_sync='p0 hit_limit 3';
set debug_sync='p0 clear';
set debug_sync='p0 test';
set debug_sync='reset';
#
# Syntax. Valid forms. Line wrap, leading, mid, trailing space.
#
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6
EXECUTE 2 HIT_LIMIT 3';
SET DEBUG_SYNC=' p0 SIGNAL s1 WAIT_FOR s2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2';
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 ';
SET DEBUG_SYNC=' p0 SIGNAL s1 WAIT_FOR s2 ';
SET DEBUG_SYNC=' p0 SIGNAL s1 WAIT_FOR s2 ';
#
# Syntax. Invalid forms.
#
--error ER_PARSE_ERROR
SET DEBUG_SYNC='';
--error ER_PARSE_ERROR
SET DEBUG_SYNC=' ';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TIMEOUT 6 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TIMEOUT 6';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1 TIMEOUT 6 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 SIGNAL s1 TIMEOUT 6';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 SIGNAL s1 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 SIGNAL s1';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TIMEOUT 6 WAIT_FOR s2 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TIMEOUT 6 WAIT_FOR s2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 TIMEOUT 6 EXECUTE 2';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 TIMEOUT 6';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 EXECUTE 2 SIGNAL s1 TIMEOUT 6';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TIMEOUT 6 SIGNAL s1';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 EXECUTE 2 TIMEOUT 6 SIGNAL s1';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 CLEAR HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='CLEAR';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 CLEAR p0';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='TEST';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TEST p0';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 RESET';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='RESET p0';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 RESET p0';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL ';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR ';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 EXECUTE ';
#
# Syntax. Invalid keywords used.
#
--error ER_UNKNOWN_SYSTEM_VARIABLE
SET DEBUG_SYNCx='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAx s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOx s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUx 0 EXECUTE 2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTx 2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 SIGNAL s1 WAIT_FOR s2 TIMEOUT 6 EXECUTE 2 HIT_LIMIx 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 CLEARx';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 TESTx';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='RESETx';
#
# Syntax. Invalid numbers. Decimal only.
#
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 0x6 EXECUTE 2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 6 EXECUTE 0x2 HIT_LIMIT 3';
--error ER_PARSE_ERROR
SET DEBUG_SYNC='p0 WAIT_FOR s2 TIMEOUT 7 EXECUTE 2 HIT_LIMIT 0x3';
#
# Syntax. Invalid value type.
#
--error ER_WRONG_TYPE_FOR_VAR
SET DEBUG_SYNC= 7;
#
# Syntax. DEBUG_SYNC is a SESSION-only variable.
#
--error ER_LOCAL_VARIABLE
SET GLOBAL DEBUG_SYNC= 'p0 CLEAR';
#
# Syntax. The variable value does not need to be a string literal.
#
SET @myvar= 'now SIGNAL from_myvar';
SET DEBUG_SYNC= @myvar;
SHOW VARIABLES LIKE 'DEBUG_SYNC';
#
SET DEBUG_SYNC= LEFT('now SIGNAL from_function_cut_here', 24);
SHOW VARIABLES LIKE 'DEBUG_SYNC';
#
# Functional tests.
#
# NOTE: There is the special synchronization point 'now'. It is placed
# immediately after setting of the DEBUG_SYNC variable.
# So it is executed before the SET statement ends.
#
# NOTE: There is only one global signal (say "signal post" or "flag mast").
# A SIGNAL action writes its signal into it ("sets a flag").
# The signal persists until explicitly overwritten.
# To avoid confusion for later tests, it is recommended to clear
# the signal by signalling "empty" ("setting the 'empty' flag"):
# SET DEBUG_SYNC= 'now SIGNAL empty';
# Preferably you can reset the whole facility with:
# SET DEBUG_SYNC= 'RESET';
# The signal is then '' (really empty) which connot be done otherwise.
#
#
# Time out immediately. This gives just a warning.
#
SET DEBUG_SYNC= 'now SIGNAL something';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
# Suppress warning number
--replace_column 2 ####
SET DEBUG_SYNC= 'now WAIT_FOR nothing TIMEOUT 0';
#
# If signal is present already, TIMEOUT 0 does not give a warning.
#
SET DEBUG_SYNC= 'now SIGNAL nothing';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'now WAIT_FOR nothing TIMEOUT 0';
#
# EXECUTE 0 is effectively a no-op.
#
SET DEBUG_SYNC= 'now SIGNAL something EXECUTE 0';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'now WAIT_FOR anotherthing TIMEOUT 0 EXECUTE 0';
#
# Run into HIT_LIMIT. This gives an error.
#
--error ER_DEBUG_SYNC_HIT_LIMIT
SET DEBUG_SYNC= 'now HIT_LIMIT 1';
#
# Many actions. Watch the array growing and shrinking in the debug trace:
# egrep 'query:|debug_sync_action:' mysql-test/var/log/master.trace
#
SET DEBUG_SYNC= 'RESET';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p1abcd SIGNAL s1 EXECUTE 2';
SET DEBUG_SYNC= 'p2abc SIGNAL s2 EXECUTE 2';
SET DEBUG_SYNC= 'p9abcdef SIGNAL s9 EXECUTE 2';
SET DEBUG_SYNC= 'p4a SIGNAL s4 EXECUTE 2';
SET DEBUG_SYNC= 'p5abcde SIGNAL s5 EXECUTE 2';
SET DEBUG_SYNC= 'p6ab SIGNAL s6 EXECUTE 2';
SET DEBUG_SYNC= 'p7 SIGNAL s7 EXECUTE 2';
SET DEBUG_SYNC= 'p8abcdef SIGNAL s8 EXECUTE 2';
SET DEBUG_SYNC= 'p3abcdef SIGNAL s3 EXECUTE 2';
#
# Execute some actions to show they exist. Each sets a distinct signal.
#
SET DEBUG_SYNC= 'p4a TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p1abcd TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p7 TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p9abcdef TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p3abcdef TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
#
# Clear the actions.
#
SET DEBUG_SYNC= 'p1abcd CLEAR';
SET DEBUG_SYNC= 'p2abc CLEAR';
SET DEBUG_SYNC= 'p5abcde CLEAR';
SET DEBUG_SYNC= 'p6ab CLEAR';
SET DEBUG_SYNC= 'p8abcdef CLEAR';
SET DEBUG_SYNC= 'p9abcdef CLEAR';
SET DEBUG_SYNC= 'p3abcdef CLEAR';
SET DEBUG_SYNC= 'p4a CLEAR';
SET DEBUG_SYNC= 'p7 CLEAR';
#
# Execute some actions to show they have gone.
#
SET DEBUG_SYNC= 'p1abcd TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p7 TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
SET DEBUG_SYNC= 'p9abcdef TEST';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
#
# Now cleanup. Actions are clear already, but signal needs to be cleared.
#
SET DEBUG_SYNC= 'RESET';
SHOW VARIABLES LIKE 'DEBUG_SYNC';
#
# Facility requires SUPER privilege.
#
CREATE USER mysqltest_1@localhost;
GRANT SUPER ON *.* TO mysqltest_1@localhost;
--echo connection con1, mysqltest_1
connect (con1,localhost,mysqltest_1,,);
SET DEBUG_SYNC= 'RESET';
disconnect con1;
--echo connection default
connection default;
DROP USER mysqltest_1@localhost;
#
CREATE USER mysqltest_2@localhost;
GRANT ALL ON *.* TO mysqltest_2@localhost;
REVOKE SUPER ON *.* FROM mysqltest_2@localhost;
--echo connection con1, mysqltest_2
connect (con1,localhost,mysqltest_2,,);
--error ER_SPECIFIC_ACCESS_DENIED_ERROR
SET DEBUG_SYNC= 'RESET';
disconnect con1;
--echo connection default
connection default;
DROP USER mysqltest_2@localhost;
#
# Example 1.
#
# Preparative cleanup.
--disable_warnings
SET DEBUG_SYNC= 'RESET';
DROP TABLE IF EXISTS t1;
--enable_warnings
#
# Test.
CREATE TABLE t1 (c1 INT);
--echo connection con1
connect (con1,localhost,root,,);
SET DEBUG_SYNC= 'before_lock_tables_takes_lock
SIGNAL opened WAIT_FOR flushed';
send INSERT INTO t1 VALUES(1);
--echo connection default
connection default;
SET DEBUG_SYNC= 'now WAIT_FOR opened';
SET DEBUG_SYNC= 'after_flush_unlock SIGNAL flushed';
FLUSH TABLE t1;
--echo connection con1
connection con1;
reap;
disconnect con1;
--echo connection default
connection default;
DROP TABLE t1;
#
# Example 2.
#
# Preparative cleanup.
--disable_warnings
SET DEBUG_SYNC= 'RESET';
DROP TABLE IF EXISTS t1;
--enable_warnings
#
# Test.
CREATE TABLE t1 (c1 INT);
LOCK TABLE t1 WRITE;
--echo connection con1
connect (con1,localhost,root,,);
# Retain action after use. First used by general_log.
SET DEBUG_SYNC= 'wait_for_lock SIGNAL locked EXECUTE 2';
send INSERT INTO t1 VALUES (1);
--echo connection default
connection default;
# Wait until INSERT waits for lock.
SET DEBUG_SYNC= 'now WAIT_FOR locked';
# let INSERT continue.
UNLOCK TABLES;
--echo connection con1
connection con1;
--echo retrieve INSERT result.
reap;
disconnect con1;
--echo connection default
connection default;
DROP TABLE t1;
#
# Cleanup after test case.
# Otherwise signal would contain 'flushed' here,
# which could confuse the next test.
#
SET DEBUG_SYNC= 'RESET';