mirror of
https://github.com/ioacademy-jikim/debugging
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122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
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/*--------------------------------------------------------------------*/
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/*--- Address Description. ---*/
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/*--- hg_addrdescr.c ---*/
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/*--------------------------------------------------------------------*/
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/*
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This file is part of Helgrind, a Valgrind tool for detecting errors
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in threaded programs.
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Copyright (C) 2007-2015 OpenWorks Ltd
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info@open-works.co.uk
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307, USA.
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The GNU General Public License is contained in the file COPYING.
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*/
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#include "pub_tool_basics.h"
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#include "pub_tool_libcbase.h"
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#include "pub_tool_libcprint.h"
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#include "pub_tool_libcassert.h"
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#include "pub_tool_wordfm.h"
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#include "pub_tool_xarray.h"
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#include "pub_tool_execontext.h"
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#include "pub_tool_debuginfo.h"
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#include "pub_tool_threadstate.h"
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#include "pub_tool_aspacemgr.h"
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#include "pub_tool_addrinfo.h"
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#include "hg_basics.h"
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#include "hg_wordset.h"
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#include "hg_lock_n_thread.h"
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#include "hg_addrdescr.h" /* self */
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void HG_(describe_addr) ( Addr a, /*OUT*/AddrInfo* ai )
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{
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tl_assert(ai->tag == Addr_Undescribed);
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/* hctxt/tnr/haddr/hszB describe the addr if it is a heap block. */
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ExeContext* hctxt;
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UInt tnr;
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Addr haddr;
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SizeT hszB;
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/* First, see if it's in any heap block. Unfortunately this
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means a linear search through all allocated heap blocks. The
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assertion says that if it's detected as a heap block, then we
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must have an allocation context for it, since all heap blocks
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should have an allocation context. */
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Bool is_heapblock
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= HG_(mm_find_containing_block)(
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&hctxt,
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&tnr,
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&haddr,
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&hszB,
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a
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);
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if (is_heapblock) {
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tl_assert(is_heapblock == (hctxt != NULL));
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ai->tag = Addr_Block;
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ai->Addr.Block.block_kind = Block_Mallocd;
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ai->Addr.Block.block_desc = "block";
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ai->Addr.Block.block_szB = hszB;
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ai->Addr.Block.rwoffset = (Word)(a) - (Word)(haddr);
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ai->Addr.Block.allocated_at = hctxt;
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VG_(initThreadInfo) (&ai->Addr.Block.alloc_tinfo);
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ai->Addr.Block.alloc_tinfo.tnr = tnr;
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ai->Addr.Block.freed_at = VG_(null_ExeContext)();;
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} else {
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/* No block found. Search a non-heap block description. */
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VG_(describe_addr) (a, ai);
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/* In case ai contains a tid, set tnr to the corresponding helgrind
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thread number. */
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if (ai->tag == Addr_Stack) {
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Thread* thr = get_admin_threads();
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tl_assert(ai->Addr.Stack.tinfo.tid);
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while (thr) {
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if (thr->coretid == ai->Addr.Stack.tinfo.tid) {
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ai->Addr.Stack.tinfo.tnr = thr->errmsg_index;
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break;
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}
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thr = thr->admin;
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}
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}
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}
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}
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Bool HG_(get_and_pp_addrdescr) (Addr addr)
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{
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Bool ret;
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AddrInfo glai;
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glai.tag = Addr_Undescribed;
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HG_(describe_addr) (addr, &glai);
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VG_(pp_addrinfo) (addr, &glai);
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ret = glai.tag != Addr_Unknown;
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VG_(clear_addrinfo) (&glai);
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return ret;
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}
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/*--------------------------------------------------------------------*/
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/*--- end hg_addrdescr.c ---*/
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/*--------------------------------------------------------------------*/
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