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/* -*- mode: C; c-basic-offset: 3; -*- */
/*
This file is part of drd, a thread error detector.
Copyright (C) 2006-2009 Bart Van Assche <bart.vanassche@gmail.com>.
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
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., 59 Temple Place, Suite 330, Boston, MA
02111-1307, USA.
The GNU General Public License is contained in the file COPYING.
*/
#include "drd_suppression.h"
#include "pub_drd_bitmap.h"
#include "pub_tool_libcassert.h" // tl_assert()
#include "pub_tool_stacktrace.h" // VG_(get_and_pp_StackTrace)()
#include "pub_tool_threadstate.h" // VG_(get_running_tid)()
#include "pub_tool_libcprint.h" // Vg_DebugMsg
/* Global variables. */
Bool DRD_(g_any_address_traced) = False;
/* Local variables. */
static struct bitmap* DRD_(s_suppressed);
static Bool DRD_(s_trace_suppression);
/* Function definitions. */
void DRD_(suppression_set_trace)(const Bool trace_suppression)
{
DRD_(s_trace_suppression) = trace_suppression;
}
void DRD_(suppression_init)(void)
{
tl_assert(DRD_(s_suppressed) == 0);
DRD_(s_suppressed) = DRD_(bm_new)();
tl_assert(DRD_(s_suppressed));
}
void DRD_(start_suppression)(const Addr a1, const Addr a2,
const char* const reason)
{
if (DRD_(s_trace_suppression))
{
VG_(message)(Vg_DebugMsg, "start suppression of 0x%lx sz %ld (%s)",
a1, a2 - a1, reason);
}
tl_assert(a1 < a2);
// tl_assert(! drd_is_any_suppressed(a1, a2));
DRD_(bm_access_range_store)(DRD_(s_suppressed), a1, a2);
}
void DRD_(finish_suppression)(const Addr a1, const Addr a2)
{
if (DRD_(s_trace_suppression))
{
VG_(message)(Vg_DebugMsg, "finish suppression of 0x%lx sz %ld",
a1, a2 - a1);
VG_(get_and_pp_StackTrace)(VG_(get_running_tid)(), 12);
}
tl_assert(a1 < a2);
if (! DRD_(is_suppressed)(a1, a2))
{
VG_(message)(Vg_DebugMsg, "?? [0x%lx,0x%lx[ not suppressed ??", a1, a2);
VG_(get_and_pp_StackTrace)(VG_(get_running_tid)(), 12);
tl_assert(False);
}
DRD_(bm_clear_store)(DRD_(s_suppressed), a1, a2);
}
/**
* Return true if data race detection suppression has been requested for all
* bytes in the range a1 .. a2 - 1 inclusive. Return false in case the range
* is only partially suppressed or not suppressed at all.
*/
Bool DRD_(is_suppressed)(const Addr a1, const Addr a2)
{
return DRD_(bm_has)(DRD_(s_suppressed), a1, a2, eStore);
}
/**
* Return true if data race detection suppression has been requested for any
* of the bytes in the range a1 .. a2 - 1 inclusive. Return false in case none
* of the bytes in the specified range is suppressed.
*/
Bool DRD_(is_any_suppressed)(const Addr a1, const Addr a2)
{
return DRD_(bm_has_any_store)(DRD_(s_suppressed), a1, a2);
}
void DRD_(start_tracing_address_range)(const Addr a1, const Addr a2)
{
tl_assert(a1 < a2);
DRD_(bm_access_range_load)(DRD_(s_suppressed), a1, a2);
if (! DRD_(g_any_address_traced))
{
DRD_(g_any_address_traced) = True;
}
}
void DRD_(stop_tracing_address_range)(const Addr a1, const Addr a2)
{
tl_assert(a1 < a2);
DRD_(bm_clear_load)(DRD_(s_suppressed), a1, a2);
if (DRD_(g_any_address_traced))
{
DRD_(g_any_address_traced)
= DRD_(bm_has_any_load)(DRD_(s_suppressed), 0, ~(Addr)0);
}
}
Bool DRD_(is_any_traced)(const Addr a1, const Addr a2)
{
return DRD_(bm_has_any_load)(DRD_(s_suppressed), a1, a2);
}
void DRD_(suppression_stop_using_mem)(const Addr a1, const Addr a2)
{
if (DRD_(s_trace_suppression))
{
Addr b;
for (b = a1; b < a2; b++)
{
if (DRD_(bm_has_1)(DRD_(s_suppressed), b, eStore))
{
VG_(message)(Vg_DebugMsg,
"stop_using_mem(0x%lx, %ld) finish suppression of"
" 0x%lx", a1, a2 - a1, b);
}
}
}
tl_assert(a1);
tl_assert(a1 < a2);
DRD_(bm_clear)(DRD_(s_suppressed), a1, a2);
}
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