database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2025-09-02 09:41:40 +03:00
Code Activity

Bug#13418934 REMOVE HAVE_PURIFY DEPENDENCES FROM INNODB

Browse Source 
InnoDB: Remove HAVE_purify, UNIV_INIT_MEM_TO_ZERO, UNIV_SET_MEM_TO_ZERO.

The compile-time setting HAVE_purify can mask potential bugs.
It is being set in PB2 Valgrind runs. We should simply get rid of it,
and replace it with UNIV_MEM_INVALID() to declare uninitialized memory
as such in Valgrind-instrumented binaries.

os_mem_alloc_large(), ut_malloc_low(): Remove the parameter set_to_zero.

ut_malloc(): Define as a macro that invokes ut_malloc_low().

buf_pool_init(): Never initialize the buffer pool frames. All pages
must be initialized before flushing them to disk.

mem_heap_alloc(): Never initialize the allocated memory block.

os_mem_alloc_nocache(), ut_test_malloc(): Unused function, remove.

rb:813 approved by Jimmy Yang
This commit is contained in:
Marko Mäkelä
2011-12-28 12:19:30 +02:00
parent 289af2579b
commit e498a1bf65
15 changed files with 16 additions and 302 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
storage/innodb_plugin/ut/ut0mem.c
View File

@@ -84,17 +84,13 @@ ut_mem_init(void)
#endif /* !UNIV_HOTBACKUP */
/**********************************************************************//**
Allocates memory. Sets it also to zero if UNIV_SET_MEM_TO_ZERO is
defined and set_to_zero is TRUE.
Allocates memory.
@return own: allocated memory */
UNIV_INTERN
void*
ut_malloc_low(
/*==========*/
ulint n, /*!< in: number of bytes to allocate */
ibool set_to_zero, /*!< in: TRUE if allocated memory should be
set to zero if UNIV_SET_MEM_TO_ZERO is
defined */
ibool assert_on_error)/*!< in: if TRUE, we crash mysqld if the
memory cannot be allocated */
{
@@ -106,12 +102,6 @@ ut_malloc_low(
ret = malloc(n);
ut_a(ret || !assert_on_error);
#ifdef UNIV_SET_MEM_TO_ZERO
if (set_to_zero) {
memset(ret, '\0', n);
UNIV_MEM_ALLOC(ret, n);
}
#endif
return(ret);
}
@@ -199,12 +189,6 @@ retry:
#endif
}
if (set_to_zero) {
#ifdef UNIV_SET_MEM_TO_ZERO
memset(ret, '\0', n + sizeof(ut_mem_block_t));
#endif
}
UNIV_MEM_ALLOC(ret, n + sizeof(ut_mem_block_t));
((ut_mem_block_t*)ret)->size = n + sizeof(ut_mem_block_t);
@@ -221,74 +205,10 @@ retry:
void* ret = malloc(n);
ut_a(ret || !assert_on_error);
# ifdef UNIV_SET_MEM_TO_ZERO
if (set_to_zero) {
memset(ret, '\0', n);
}
# endif
return(ret);
#endif /* !UNIV_HOTBACKUP */
}
/**********************************************************************//**
Allocates memory. Sets it also to zero if UNIV_SET_MEM_TO_ZERO is
defined.
@return own: allocated memory */
UNIV_INTERN
void*
ut_malloc(
/*======*/
ulint n) /*!< in: number of bytes to allocate */
{
#ifndef UNIV_HOTBACKUP
return(ut_malloc_low(n, TRUE, TRUE));
#else /* !UNIV_HOTBACKUP */
return(malloc(n));
#endif /* !UNIV_HOTBACKUP */
}
#ifndef UNIV_HOTBACKUP
/**********************************************************************//**
Tests if malloc of n bytes would succeed. ut_malloc() asserts if memory runs
out. It cannot be used if we want to return an error message. Prints to
stderr a message if fails.
@return TRUE if succeeded */
UNIV_INTERN
ibool
ut_test_malloc(
/*===========*/
ulint n) /*!< in: try to allocate this many bytes */
{
void* ret;
ret = malloc(n);
if (ret == NULL) {
ut_print_timestamp(stderr);
fprintf(stderr,
" InnoDB: Error: cannot allocate"
" %lu bytes of memory for\n"
"InnoDB: a BLOB with malloc! Total allocated memory\n"
"InnoDB: by InnoDB %lu bytes."
" Operating system errno: %d\n"
"InnoDB: Check if you should increase"
" the swap file or\n"
"InnoDB: ulimits of your operating system.\n"
"InnoDB: On FreeBSD check you have"
" compiled the OS with\n"
"InnoDB: a big enough maximum process size.\n",
(ulong) n,
(ulong) ut_total_allocated_memory,
(int) errno);
return(FALSE);
}
free(ret);
return(TRUE);
}
#endif /* !UNIV_HOTBACKUP */
/**********************************************************************//**
Frees a memory block allocated with ut_malloc. Freeing a NULL pointer is
a nop. */