blob: 65768cb710db508ae1d45930c18606deecdbc3e3 [file] [log] [blame]
/*
This file is part of drd, a thread error detector.
Copyright (C) 2006-2012 Bart Van Assche <bvanassche@acm.org>.
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* s_suppressed;
static struct bitmap* s_traced;
static Bool s_trace_suppression;
/* Function definitions. */
void DRD_(suppression_set_trace)(const Bool trace_suppression)
{
s_trace_suppression = trace_suppression;
}
void DRD_(suppression_init)(void)
{
tl_assert(s_suppressed == 0);
tl_assert(s_traced == 0);
s_suppressed = DRD_(bm_new)();
s_traced = DRD_(bm_new)();
tl_assert(s_suppressed);
tl_assert(s_traced);
}
void DRD_(start_suppression)(const Addr a1, const Addr a2,
const HChar* const reason)
{
if (s_trace_suppression)
VG_(message)(Vg_DebugMsg, "start suppression of 0x%lx sz %ld (%s)\n",
a1, a2 - a1, reason);
tl_assert(a1 <= a2);
DRD_(bm_access_range_store)(s_suppressed, a1, a2);
}
void DRD_(finish_suppression)(const Addr a1, const Addr a2)
{
if (s_trace_suppression) {
VG_(message)(Vg_DebugMsg, "finish suppression of 0x%lx sz %ld\n",
a1, a2 - a1);
VG_(get_and_pp_StackTrace)(VG_(get_running_tid)(), 12);
}
tl_assert(a1 <= a2);
DRD_(bm_clear_store)(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)(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)(s_suppressed, a1, a2);
}
void DRD_(mark_hbvar)(const Addr a1)
{
DRD_(bm_access_range_load)(s_suppressed, a1, a1 + 1);
}
Bool DRD_(range_contains_suppression_or_hbvar)(const Addr a1, const Addr a2)
{
return DRD_(bm_has_any_access)(s_suppressed, a1, a2);
}
/**
* Start tracing memory accesses in the range [a1,a2). If persistent == True,
* keep tracing even after memory deallocation and reallocation.
*/
void DRD_(start_tracing_address_range)(const Addr a1, const Addr a2,
const Bool persistent)
{
tl_assert(a1 <= a2);
if (s_trace_suppression)
VG_(message)(Vg_DebugMsg, "start_tracing(0x%lx, %ld) %s\n",
a1, a2 - a1, persistent ? "persistent" : "non-persistent");
DRD_(bm_access_range_load)(s_traced, a1, a2);
if (persistent)
DRD_(bm_access_range_store)(s_traced, a1, a2);
if (!DRD_(g_any_address_traced) && a1 < a2)
DRD_(g_any_address_traced) = True;
}
/**
* Stop tracing memory accesses in the range [a1,a2).
*/
void DRD_(stop_tracing_address_range)(const Addr a1, const Addr a2)
{
tl_assert(a1 <= a2);
if (s_trace_suppression)
VG_(message)(Vg_DebugMsg, "stop_tracing(0x%lx, %ld)\n",
a1, a2 - a1);
if (DRD_(g_any_address_traced)) {
DRD_(bm_clear)(s_traced, a1, a2);
DRD_(g_any_address_traced) = DRD_(bm_has_any_load_g)(s_traced);
}
}
Bool DRD_(is_any_traced)(const Addr a1, const Addr a2)
{
return DRD_(bm_has_any_access)(s_traced, a1, a2);
}
/**
* Stop using the memory range [a1,a2). Stop tracing memory accesses to
* non-persistent address ranges.
*/
void DRD_(suppression_stop_using_mem)(const Addr a1, const Addr a2)
{
if (s_trace_suppression) {
Addr b;
for (b = a1; b < a2; b++) {
if (DRD_(bm_has_1)(s_suppressed, b, eStore)) {
VG_(message)(Vg_DebugMsg,
"stop_using_mem(0x%lx, %ld) finish suppression of"
" 0x%lx\n", a1, a2 - a1, b);
}
}
}
tl_assert(a1);
tl_assert(a1 <= a2);
DRD_(bm_clear)(s_suppressed, a1, a2);
DRD_(bm_clear_load)(s_traced, a1, a2);
}