diff options
Diffstat (limited to 'sql/sys_vars.cc')
| -rw-r--r-- | sql/sys_vars.cc | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/sql/sys_vars.cc b/sql/sys_vars.cc index 7241685fb61..a8b557c90c8 100644 --- a/sql/sys_vars.cc +++ b/sql/sys_vars.cc @@ -53,6 +53,7 @@ #include <myisam.h> #include "debug_sync.h" // DEBUG_SYNC #include "sql_show.h" +#include "opt_trace_context.h" #include "log_event.h" #ifdef WITH_PERFSCHEMA_STORAGE_ENGINE @@ -2542,6 +2543,23 @@ static Sys_var_flagset Sys_optimizer_switch( NO_MUTEX_GUARD, NOT_IN_BINLOG, ON_CHECK(0), ON_UPDATE(fix_optimizer_switch)); +static Sys_var_flagset Sys_optimizer_trace( + "optimizer_trace", + "Controls tracing of the Optimizer:" + " optimizer_trace=option=val[,option=val...], where option is one of" + " {enabled}" + " and val is one of {on, off, default}", + SESSION_VAR(optimizer_trace), CMD_LINE(REQUIRED_ARG), + Opt_trace_context::flag_names, DEFAULT(Opt_trace_context::FLAG_DEFAULT)); + // @see set_var::is_var_optimizer_trace() +export sys_var *Sys_optimizer_trace_ptr = &Sys_optimizer_trace; + +static Sys_var_ulong Sys_optimizer_trace_max_mem_size( + "optimizer_trace_max_mem_size", + "Maximum allowed size of an optimizer trace", + SESSION_VAR(optimizer_trace_max_mem_size), CMD_LINE(REQUIRED_ARG), + VALID_RANGE(0, ULONG_MAX), DEFAULT(1024 * 1024), BLOCK_SIZE(1)); + static Sys_var_charptr Sys_pid_file( "pid_file", "Pid file used by safe_mysqld", READ_ONLY GLOBAL_VAR(pidfile_name_ptr), CMD_LINE(REQUIRED_ARG), |