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Bug#13418934 REMOVE HAVE_PURIFY DEPENDENCES FROM INNODB

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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
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5
storage/innodb_plugin/buf/buf0buf.c
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@@ -750,11 +750,8 @@ buf_chunk_init(
for (i = chunk->size; i--; ) {
buf_block_init(block, frame);
UNIV_MEM_INVALID(block->frame, UNIV_PAGE_SIZE);
#ifdef HAVE_purify
/* Wipe contents of frame to eliminate a Purify warning */
memset(block->frame, '\0', UNIV_PAGE_SIZE);
#endif
/* Add the block to the free list */
UT_LIST_ADD_LAST(list, buf_pool->free, (&block->page));
ut_d(block->page.in_free_list = TRUE);