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ftmemsim-valgrind/drd/drd_thread.h
Bart Van Assche e73284e37f - Added support for most of the ANNOTATE_...() macro's supported by 
ThreadSanitizer.                                                              
- Modified DRD's error reporting code such that it does no longer let           
  the Valgrind core print the Valgrind thread ID but that it now prints         
  the DRD thread ID and name. Updated expected output files where               
  necessary.                                                                    
- Modified drd/test/Makefile.am such that the tests using gcc's built-in        
  functions for atomic memory access such that these are only compiled when     
  the gcc version in use supports these built-in functions.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@10186
2009-05-31 18:53:54 +00:00

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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.
*/
#ifndef __THREAD_H
#define __THREAD_H
/* Include directives. */
#include "drd_basics.h"
#include "drd_segment.h"
#include "pub_drd_bitmap.h"
#include "pub_tool_libcassert.h" /* tl_assert() */
#include "pub_tool_stacktrace.h" /* typedef StackTrace */
#include "pub_tool_threadstate.h" /* VG_N_THREADS */
/* Defines. */
/** Maximum number of threads DRD keeps information about. */
#define DRD_N_THREADS VG_N_THREADS
/** A number different from any valid DRD thread ID. */
#define DRD_INVALID_THREADID 0
/**
* A number different from any valid POSIX thread ID.
*
* @note The PThreadId typedef and the INVALID_POSIX_THREADID depend on the
* operating system and threading library in use. PThreadId must contain at
* least as many bits as pthread_t, and INVALID_POSIX_THREADID
* must be a value that will never be returned by pthread_self().
*/
#define INVALID_POSIX_THREADID ((PThreadId)0)
/* Type definitions. */
/**
* POSIX thread ID. The type PThreadId must be at least as wide as
* pthread_t.
*/
typedef UWord PThreadId;
/** Per-thread information managed by DRD. */
typedef struct
{
Segment* first; /**< Pointer to first segment. */
Segment* last; /**< Pointer to last segment. */
ThreadId vg_threadid; /**< Valgrind thread ID. */
PThreadId pt_threadid; /**< POSIX thread ID. */
Addr stack_min_min; /**< Lowest value stack pointer ever had. */
Addr stack_min; /**< Current stack pointer. */
Addr stack_startup; /**<Stack pointer after pthread_create() finished.*/
Addr stack_max; /**< Top of stack. */
SizeT stack_size; /**< Maximum size of stack. */
char name[64]; /**< User-assigned thread name. */
/** Indicates whether the Valgrind core knows about this thread. */
Bool vg_thread_exists;
/** Indicates whether there is an associated POSIX thread ID. */
Bool posix_thread_exists;
/**
* If true, indicates that there is a corresponding POSIX thread ID and
* a corresponding OS thread that is detached.
*/
Bool detached_posix_thread;
/** Wether recording of memory load accesses is currently enabled. */
Bool is_recording_loads;
/** Wether recording of memory load accesses is currently enabled. */
Bool is_recording_stores;
/** Nesting level of synchronization functions called by the client. */
Int synchr_nesting;
} ThreadInfo;
/*
* Local variables of drd_thread.c that are declared here such that these
* can be accessed by inline functions.
*/
/**
* DRD thread ID of the currently running thread. It is crucial for correct
* operation of DRD that this number is always in sync with
* VG_(get_running_tid)().
*/
extern DrdThreadId DRD_(g_drd_running_tid);
/** Per-thread information managed by DRD. */
extern ThreadInfo DRD_(g_threadinfo)[DRD_N_THREADS];
/** Conflict set for the currently running thread. */
extern struct bitmap* DRD_(g_conflict_set);
/* Function declarations. */
void DRD_(thread_trace_context_switches)(const Bool t);
void DRD_(thread_trace_conflict_set)(const Bool t);
Bool DRD_(thread_get_trace_fork_join)(void);
void DRD_(thread_set_trace_fork_join)(const Bool t);
void DRD_(thread_set_segment_merging)(const Bool m);
DrdThreadId DRD_(VgThreadIdToDrdThreadId)(const ThreadId tid);
DrdThreadId DRD_(NewVgThreadIdToDrdThreadId)(const ThreadId tid);
DrdThreadId DRD_(PtThreadIdToDrdThreadId)(const PThreadId tid);
ThreadId DRD_(DrdThreadIdToVgThreadId)(const DrdThreadId tid);
DrdThreadId DRD_(thread_pre_create)(const DrdThreadId creator,
const ThreadId vg_created);
DrdThreadId DRD_(thread_post_create)(const ThreadId vg_created);
void DRD_(thread_post_join)(DrdThreadId drd_joiner, DrdThreadId drd_joinee);
void DRD_(thread_delete)(const DrdThreadId tid);
void DRD_(thread_finished)(const DrdThreadId tid);
void DRD_(thread_pre_cancel)(const DrdThreadId tid);
void DRD_(thread_set_stack_startup)(const DrdThreadId tid,
const Addr stack_startup);
Addr DRD_(thread_get_stack_min)(const DrdThreadId tid);
Addr DRD_(thread_get_stack_min_min)(const DrdThreadId tid);
Addr DRD_(thread_get_stack_max)(const DrdThreadId tid);
SizeT DRD_(thread_get_stack_size)(const DrdThreadId tid);
void DRD_(thread_set_pthreadid)(const DrdThreadId tid, const PThreadId ptid);
Bool DRD_(thread_get_joinable)(const DrdThreadId tid);
void DRD_(thread_set_joinable)(const DrdThreadId tid, const Bool joinable);
const char* DRD_(thread_get_name)(const DrdThreadId tid);
void DRD_(thread_set_name)(const DrdThreadId tid, const char* const name);
void DRD_(thread_set_vg_running_tid)(const ThreadId vg_tid);
void DRD_(thread_set_running_tid)(const ThreadId vg_tid,
const DrdThreadId drd_tid);
int DRD_(thread_enter_synchr)(const DrdThreadId tid);
int DRD_(thread_leave_synchr)(const DrdThreadId tid);
int DRD_(thread_get_synchr_nesting_count)(const DrdThreadId tid);
void DRD_(thread_new_segment)(const DrdThreadId tid);
VectorClock* DRD_(thread_get_vc)(const DrdThreadId tid);
void DRD_(thread_get_latest_segment)(Segment** sg, const DrdThreadId tid);
void DRD_(thread_combine_vc)(const DrdThreadId joiner,
const DrdThreadId joinee);
void DRD_(thread_combine_vc2)(const DrdThreadId tid,
const VectorClock* const vc);
void DRD_(thread_stop_using_mem)(const Addr a1, const Addr a2);
void DRD_(thread_set_record_loads)(const DrdThreadId tid, const Bool enabled);
void DRD_(thread_set_record_stores)(const DrdThreadId tid, const Bool enabled);
void DRD_(thread_print_all)(void);
void DRD_(thread_report_races)(const DrdThreadId tid);
void DRD_(thread_report_races_segment)(const DrdThreadId tid,
const Segment* const p);
void DRD_(thread_report_all_races)(void);
void DRD_(thread_report_conflicting_segments)(const DrdThreadId tid,
const Addr addr,
const SizeT size,
const BmAccessTypeT access_type);
ULong DRD_(thread_get_context_switch_count)(void);
ULong DRD_(thread_get_report_races_count)(void);
ULong DRD_(thread_get_discard_ordered_segments_count)(void);
ULong DRD_(thread_get_update_conflict_set_count)(ULong* dsnsc, ULong* dscvc);
ULong DRD_(thread_get_conflict_set_bitmap_creation_count)(void);
ULong DRD_(thread_get_conflict_set_bitmap2_creation_count)(void);
/* Inline function definitions. */
/**
* Whether or not the specified DRD thread ID is valid.
*
* A DRD thread ID is valid if and only if the following conditions are met:
* - The ID is a valid index of the DRD_(g_threadinfo)[] array.
* - The ID is not equal to DRD_INVALID_THREADID.
* - The ID refers either to a thread known by the Valgrind core, a joinable
* thread that has not yet been joined or a detached thread.
*/
static __inline__
Bool DRD_(IsValidDrdThreadId)(const DrdThreadId tid)
{
return (0 <= (int)tid && tid < DRD_N_THREADS && tid != DRD_INVALID_THREADID
&& ! (DRD_(g_threadinfo)[tid].vg_thread_exists == False
&& DRD_(g_threadinfo)[tid].posix_thread_exists == False
&& DRD_(g_threadinfo)[tid].detached_posix_thread == False));
}
/** Returns the DRD thread ID of the currently running thread. */
static __inline__
DrdThreadId DRD_(thread_get_running_tid)(void)
{
tl_assert(DRD_(g_drd_running_tid) != DRD_INVALID_THREADID);
return DRD_(g_drd_running_tid);
}
/** Returns a pointer to the conflict set for the currently running thread. */
static __inline__
struct bitmap* DRD_(thread_get_conflict_set)(void)
{
return DRD_(g_conflict_set);
}
/**
* Reports whether or not memory access recording is enabled for the
* currently running thread.
*/
static __inline__
Bool DRD_(running_thread_is_recording_loads)(void)
{
#ifdef ENABLE_DRD_CONSISTENCY_CHECKS
tl_assert(0 <= (int)DRD_(g_drd_running_tid)
&& DRD_(g_drd_running_tid) < DRD_N_THREADS
&& DRD_(g_drd_running_tid) != DRD_INVALID_THREADID);
#endif
return (DRD_(g_threadinfo)[DRD_(g_drd_running_tid)].synchr_nesting == 0
&& DRD_(g_threadinfo)[DRD_(g_drd_running_tid)].is_recording_loads);
}
static __inline__
Bool DRD_(running_thread_is_recording_stores)(void)
{
#ifdef ENABLE_DRD_CONSISTENCY_CHECKS
tl_assert(0 <= (int)DRD_(g_drd_running_tid)
&& DRD_(g_drd_running_tid) < DRD_N_THREADS
&& DRD_(g_drd_running_tid) != DRD_INVALID_THREADID);
#endif
return (DRD_(g_threadinfo)[DRD_(g_drd_running_tid)].synchr_nesting == 0
&& DRD_(g_threadinfo)[DRD_(g_drd_running_tid)].is_recording_stores);
}
/**
* Update the information about the lowest stack address that has ever been
* accessed by a thread.
*/
static __inline__
void DRD_(thread_set_stack_min)(const DrdThreadId tid, const Addr stack_min)
{
#ifdef ENABLE_DRD_CONSISTENCY_CHECKS
tl_assert(0 <= (int)tid
&& tid < DRD_N_THREADS
&& tid != DRD_INVALID_THREADID);
#endif
DRD_(g_threadinfo)[tid].stack_min = stack_min;
#ifdef ENABLE_DRD_CONSISTENCY_CHECKS
/* This function can be called after the thread has been created but */
/* before drd_post_thread_create() has filled in stack_max. */
tl_assert(DRD_(g_threadinfo)[tid].stack_min
< DRD_(g_threadinfo)[tid].stack_max
|| DRD_(g_threadinfo)[tid].stack_max == 0);
#endif
if (UNLIKELY(stack_min < DRD_(g_threadinfo)[tid].stack_min_min))
{
DRD_(g_threadinfo)[tid].stack_min_min = stack_min;
}
}
/**
* Return true if and only if the specified address is on the stack of the
* currently scheduled thread.
*/
static __inline__
Bool DRD_(thread_address_on_stack)(const Addr a)
{
return (DRD_(g_threadinfo)[DRD_(g_drd_running_tid)].stack_min <= a
&& a < DRD_(g_threadinfo)[DRD_(g_drd_running_tid)].stack_max);
}
/**
* Return true if and only if the specified address is on the stack of any
* thread.
*/
static __inline__
Bool DRD_(thread_address_on_any_stack)(const Addr a)
{
int i;
for (i = 1; i < DRD_N_THREADS; i++)
{
if (DRD_(g_threadinfo)[i].vg_thread_exists
&& DRD_(g_threadinfo)[i].stack_min <= a
&& a < DRD_(g_threadinfo)[i].stack_max)
{
return True;
}
}
return False;
}
/** Return a pointer to the latest segment for the specified thread. */
static __inline__
Segment* DRD_(thread_get_segment)(const DrdThreadId tid)
{
#ifdef ENABLE_DRD_CONSISTENCY_CHECKS
tl_assert(0 <= (int)tid && tid < DRD_N_THREADS
&& tid != DRD_INVALID_THREADID);
tl_assert(DRD_(g_threadinfo)[tid].last);
#endif
return DRD_(g_threadinfo)[tid].last;
}
/** Return a pointer to the latest segment for the running thread. */
static __inline__
Segment* DRD_(running_thread_get_segment)(void)
{
return DRD_(thread_get_segment)(DRD_(g_drd_running_tid));
}
#endif /* __THREAD_H */
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