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/* Copyright (c) 2003, 2006, 2007 MySQL AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA */
#include "WOPool.hpp"
#include <ndbd_exit_codes.h>
#include <NdbOut.hpp>
WOPool::WOPool()
{
bzero(this, sizeof(* this));
m_current_pos = WOPage::WOPAGE_WORDS;
}
void
WOPool::init(const Record_info& ri, const Pool_context& pc)
{
m_ctx = pc;
m_record_info = ri;
m_record_info.m_size = ((ri.m_size + 3) >> 2); // Align to word boundary
m_record_info.m_offset_magic = ((ri.m_offset_magic + 3) >> 2);
m_memroot = (WOPage*)m_ctx.get_memroot();
ndbout_c("WOPool::init(%x, %d)",ri.m_type_id, m_record_info.m_size);
}
bool
WOPool::seize_new_page(Ptr<void>& ptr)
{
WOPage* page;
Uint32 page_no = RNIL;
if ((page = (WOPage*)m_ctx.alloc_page(m_record_info.m_type_id, &page_no)))
{
if (m_current_page)
{
m_current_page->m_ref_count = m_current_ref_count;
}
m_current_pos = 0;
m_current_ref_count = 0;
m_current_page_no = page_no;
m_current_page = page;
page->m_type_id = m_record_info.m_type_id;
bool ret = seize(ptr);
assert(ret);
return true;
}
return false;
}
void
WOPool::release_not_current(Ptr<void> ptr)
{
WOPage* page = (WOPage*)(UintPtr(ptr.p) & ~(GLOBAL_PAGE_SIZE - 1));
Uint32 cnt = page->m_ref_count;
Uint32 type = page->m_type_id;
Uint32 ri_type = m_record_info.m_type_id;
if (likely(cnt && type == ri_type))
{
if (cnt == 1)
{
m_ctx.release_page(ri_type, ptr.i >> POOL_RECORD_BITS);
return;
}
page->m_ref_count = cnt - 1;
return;
}
handle_inconsistent_release(ptr);
}
void
WOPool::handle_invalid_release(Ptr<void> ptr)
{
char buf[255];
Uint32 pos = ptr.i & POOL_RECORD_MASK;
Uint32 pageI = ptr.i >> POOL_RECORD_BITS;
Uint32 * record_ptr_p = (Uint32*)ptr.p;
Uint32 * record_ptr_i = (m_memroot+pageI)->m_data + pos;
Uint32 magic = * (record_ptr_p + m_record_info.m_offset_magic);
snprintf(buf, sizeof(buf),
"Invalid memory release: ptr (%x %p %p) magic: (%.8x %.8x) memroot: %p page: %x",
ptr.i, ptr.p, record_ptr_i, magic, m_record_info.m_type_id,
m_memroot,
(m_memroot+pageI)->m_type_id);
m_ctx.handleAbort(NDBD_EXIT_PRGERR, buf);
}
void
WOPool::handle_invalid_get_ptr(Uint32 ptrI)
{
char buf[255];
Uint32 pos = ptrI & POOL_RECORD_MASK;
Uint32 pageI = ptrI >> POOL_RECORD_BITS;
Uint32 * record_ptr_i = (m_memroot+pageI)->m_data + pos;
Uint32 magic = * (record_ptr_i + m_record_info.m_offset_magic);
snprintf(buf, sizeof(buf),
"Invalid memory access: ptr (%x %p) magic: (%.8x %.8x) memroot: %p page: %x",
ptrI, record_ptr_i, magic, m_record_info.m_type_id,
m_memroot,
(m_memroot+pageI)->m_type_id);
m_ctx.handleAbort(NDBD_EXIT_PRGERR, buf);
}
void
WOPool::handle_inconsistent_release(Ptr<void> ptr)
{
WOPage* page = (WOPage*)(UintPtr(ptr.p) & ~(GLOBAL_PAGE_SIZE - 1));
Uint32 cnt = page->m_ref_count;
Uint32 type = page->m_type_id;
Uint32 ri_type = m_record_info.m_type_id;
char buf[255];
snprintf(buf, sizeof(buf),
"Memory corruption: ptr (%x %p) page (%d %x %x)",
ptr.i, ptr.p, cnt, type, ri_type);
m_ctx.handleAbort(NDBD_EXIT_PRGERR, buf);
}
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