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/*--- Address Description. ---*/
/*--- hg_addrdescr.c ---*/
This file is part of Helgrind, a Valgrind tool for detecting errors
in threaded programs.
Copyright (C) 2007-2012 OpenWorks Ltd
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; either version 2 of the
License, or (at your option) any later version.
This program is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
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., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
#include "pub_tool_basics.h"
#include "pub_tool_libcbase.h"
#include "pub_tool_libcprint.h"
#include "pub_tool_libcassert.h"
#include "pub_tool_wordfm.h"
#include "pub_tool_xarray.h"
#include "pub_tool_execontext.h"
#include "pub_tool_debuginfo.h"
#include "pub_tool_threadstate.h"
#include "pub_tool_aspacemgr.h"
#include "pub_tool_addrinfo.h"
#include "hg_basics.h"
#include "hg_wordset.h"
#include "hg_lock_n_thread.h"
#include "hg_addrdescr.h" /* self */
void HG_(describe_addr) ( Addr a, /*OUT*/AddrInfo* ai )
tl_assert(ai->tag == Addr_Undescribed);
/* hctxt/tnr/haddr/hszB describe the addr if it is a heap block. */
ExeContext* hctxt;
UInt tnr;
Addr haddr;
SizeT hszB;
/* First, see if it's in any heap block. Unfortunately this
means a linear search through all allocated heap blocks. The
assertion says that if it's detected as a heap block, then we
must have an allocation context for it, since all heap blocks
should have an allocation context. */
Bool is_heapblock
= HG_(mm_find_containing_block)(
if (is_heapblock) {
tl_assert(is_heapblock == (hctxt != NULL));
ai->tag = Addr_Block;
ai->Addr.Block.block_kind = Block_Mallocd;
ai->Addr.Block.block_desc = "block";
ai->Addr.Block.block_szB = hszB;
ai->Addr.Block.rwoffset = (Word)(a) - (Word)(haddr);
ai->Addr.Block.allocated_at = hctxt;
VG_(initThreadInfo) (&ai->Addr.Block.alloc_tinfo);
ai->Addr.Block.alloc_tinfo.tnr = tnr;
ai->Addr.Block.freed_at = VG_(null_ExeContext)();;
} else {
/* No block found. Search a non-heap block description. */
VG_(describe_addr) (a, ai);
/* In case ai contains a tid, set tnr to the corresponding helgrind
thread number. */
if (ai->tag == Addr_Stack) {
Thread* thr = get_admin_threads();
while (thr) {
if (thr->coretid == ai->Addr.Stack.tinfo.tid) {
ai->Addr.Stack.tinfo.tnr = thr->errmsg_index;
thr = thr->admin;
Bool HG_(get_and_pp_addrdescr) (Addr addr)
Bool ret;
AddrInfo glai;
glai.tag = Addr_Undescribed;
HG_(describe_addr) (addr, &glai);
VG_(pp_addrinfo) (addr, &glai);
ret = glai.tag != Addr_Unknown;
VG_(clear_addrinfo) (&glai);
return ret;
/*--- end hg_addrdescr.c ---*/