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Manual merge from mysql-5.1-bugteam to mysql-trunk-merge.

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conflicts:
   conflict      mysys/safemalloc.c
   conflict      sql/mysqld.cc
   conflict      sql/sp.cc
   conflict      sql/sql_lex.cc
   conflict      sql/sql_lex.h
   conflict      sql/sql_parse.cc
   conflict      sql/sql_prepare.cc
This commit is contained in:
Alexey Kopytov
2010-06-11 17:48:24 +04:00
parent 26a0349592 e5cf56ef80
commit f84b3f5c21
18 changed files with 179 additions and 47 deletions
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30
sql/sql_lex.cc
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@ -147,20 +147,30 @@ st_parsing_options::reset()
Perform initialization of Lex_input_stream instance.
Basically, a buffer for pre-processed query. This buffer should be large
enough to keep multi-statement query. The allocation is done once in the
Lex_input_stream constructor in order to prevent memory pollution when
enough to keep multi-statement query. The allocation is done once in
Lex_input_stream::init() in order to prevent memory pollution when
the server is processing large multi-statement queries.
@todo Check return value of THD::alloc().
*/
Lex_input_stream::Lex_input_stream(THD *thd,
const char* buffer,
unsigned int length)
:m_thd(thd)
bool Lex_input_stream::init(THD *thd,
const char* buff,
unsigned int length)
{
DBUG_EXECUTE_IF("bug42064_simulate_oom",
DBUG_SET("+d,simulate_out_of_memory"););
m_cpp_buf= (char*) thd->alloc(length + 1);
reset(buffer, length);
DBUG_EXECUTE_IF("bug42064_simulate_oom",
DBUG_SET("-d,bug42064_simulate_oom"););
if (m_cpp_buf == NULL)
return TRUE;
m_thd= thd;
reset(buff, length);
return FALSE;
}
@ -203,8 +213,6 @@ Lex_input_stream::reset(const char *buffer, unsigned int length)
m_cpp_ptr= m_cpp_buf;
}
Lex_input_stream::~Lex_input_stream()
{}
/**
The operation is called from the parser in order to