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enable thread debugging

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This commit is contained in:
Vítor Santos Costa 2013-11-12 08:34:26 +00:00
parent 2314efdc6c
commit e813c75814
5 changed files with 168 additions and 115 deletions
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68
C/signals.c
View File

@ -146,55 +146,43 @@ static Int
p_first_signal( USES_REGS1 )
{
LOCK(LOCAL_SignalLock);
#ifdef THREADS
pthread_mutex_lock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_LOCK(&(LOCAL_ThreadHandle.tlock));
/* always do wakeups first, because you don't want to keep the
non-backtrackable variable bad */
if (LOCAL_ActiveSignals & YAP_WAKEUP_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_WAKEUP_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigWakeUp));
}
if (LOCAL_ActiveSignals & YAP_ITI_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_ITI_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigIti));
}
if (LOCAL_ActiveSignals & YAP_INT_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_INT_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigInt));
}
if (LOCAL_ActiveSignals & YAP_USR2_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_USR2_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigUsr2));
}
if (LOCAL_ActiveSignals & YAP_USR1_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_USR1_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigUsr1));
}
if (LOCAL_ActiveSignals & YAP_PIPE_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_PIPE_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
#endif
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigPipe));
@ -202,7 +190,7 @@ p_first_signal( USES_REGS1 )
if (LOCAL_ActiveSignals & YAP_HUP_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_HUP_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
#endif
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigHup));
@ -219,71 +207,53 @@ p_first_signal( USES_REGS1 )
}
if (LOCAL_ActiveSignals & YAP_DELAY_CREEP_SIGNAL) {
LOCAL_ActiveSignals &= ~(YAP_CREEP_SIGNAL|YAP_DELAY_CREEP_SIGNAL);
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigDelayCreep));
}
if (LOCAL_ActiveSignals & YAP_CREEP_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_CREEP_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigCreep));
}
if (LOCAL_ActiveSignals & YAP_TRACE_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_TRACE_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigTrace));
}
if (LOCAL_ActiveSignals & YAP_DEBUG_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_DEBUG_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigDebug));
}
if (LOCAL_ActiveSignals & YAP_BREAK_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_BREAK_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigBreak));
}
if (LOCAL_ActiveSignals & YAP_STACK_DUMP_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_STACK_DUMP_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigStackDump));
}
if (LOCAL_ActiveSignals & YAP_STATISTICS_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_STATISTICS_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomSigStatistics));
}
if (LOCAL_ActiveSignals & YAP_FAIL_SIGNAL) {
LOCAL_ActiveSignals &= ~YAP_FAIL_SIGNAL;
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return Yap_unify(ARG1, MkAtomTerm(AtomFail));
}
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
UNLOCK(LOCAL_SignalLock);
return FALSE;
}
@ -337,9 +307,7 @@ p_continue_signals( USES_REGS1 )
if (LOCAL_ActiveSignals & YAP_FAIL_SIGNAL) {
Yap_signal(YAP_FAIL_SIGNAL);
}
#ifdef THREADS
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
#endif
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
return TRUE;
}

123
C/threads.c
View File

@ -31,6 +31,16 @@ static char SccsId[] = "%W% %G%";
#include "tab.macros.h"
#endif /* TABLING */
#if DEBUG_LOCKS
int debug_locks;
static Int p_debug_locks( USES_REGS1 ) { debug_locks = 1; return TRUE; }
static Int p_nodebug_locks( USES_REGS1 ) { debug_locks = 0; return TRUE; }
#endif
#if THREADS
#include "threads.h"
@ -41,14 +51,6 @@ static char SccsId[] = "%W% %G%";
*
*/
#if DEBUGX
static void DEBUG_TLOCK_ACCESS( int pos, int wid) {
fprintf(stderr,"wid=%p %p\n", wid, pos);
}
#else
#define DEBUG_TLOCK_ACCESS(WID, POS)
#endif
static int
allocate_new_tid(void)
{
@ -65,12 +67,10 @@ allocate_new_tid(void)
if (!Yap_InitThread(new_worker_id)) {
return -1;
}
pthread_mutex_lock(&(REMOTE_ThreadHandle(new_worker_id).tlock));
DEBUG_TLOCK_ACCESS(new_worker_id, 0);
MUTEX_LOCK(&(REMOTE_ThreadHandle(new_worker_id).tlock));
REMOTE_ThreadHandle(new_worker_id).in_use = TRUE;
} else if (new_worker_id < MAX_THREADS) {
pthread_mutex_lock(&(REMOTE_ThreadHandle(new_worker_id).tlock));
DEBUG_TLOCK_ACCESS(new_worker_id, 0);
MUTEX_LOCK(&(REMOTE_ThreadHandle(new_worker_id).tlock));
REMOTE_ThreadHandle(new_worker_id).in_use = TRUE;
} else {
new_worker_id = -1;
@ -181,8 +181,7 @@ kill_thread_engine (int wid, int always_die)
always_die) {
REMOTE_ThreadHandle(wid).zombie = FALSE;
REMOTE_ThreadHandle(wid).in_use = FALSE;
DEBUG_TLOCK_ACCESS(1, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
}
UNLOCK(GLOBAL_ThreadHandlesLock);
}
@ -252,8 +251,7 @@ setup_engine(int myworker_id, int init_thread)
/* I exist */
GLOBAL_NOfThreadsCreated++;
GLOBAL_NOfThreads++;
DEBUG_TLOCK_ACCESS(2, myworker_id);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(myworker_id).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(myworker_id).tlock));
#ifdef TABLING
new_dependency_frame(REMOTE_top_dep_fr(myworker_id), FALSE, NULL, NULL, B, NULL, FALSE, NULL); /* same as in Yap_init_root_frames() */
#endif /* TABLING */
@ -424,16 +422,15 @@ p_thread_zombie_self( USES_REGS1 )
/* make sure the lock is available */
if (pthread_getspecific(Yap_yaamregs_key) == NULL)
return Yap_unify(MkIntegerTerm(-1), ARG1);
pthread_mutex_lock(&(LOCAL_ThreadHandle.tlock));
DEBUG_TLOCK_ACCESS(4, worker_id);
MUTEX_LOCK(&(LOCAL_ThreadHandle.tlock));
if (LOCAL_ActiveSignals &= YAP_ITI_SIGNAL) {
DEBUG_TLOCK_ACCESS(5, worker_id);
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock));
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
return FALSE;
}
// fprintf(stderr," -- %d\n", worker_id);
LOCAL_ThreadHandle.in_use = FALSE;
LOCAL_ThreadHandle.zombie = TRUE;
//MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock));
return Yap_unify(MkIntegerTerm(worker_id), ARG1);
}
@ -443,7 +440,7 @@ p_thread_status_lock( USES_REGS1 )
/* make sure the lock is available */
if (pthread_getspecific(Yap_yaamregs_key) == NULL)
return FALSE;
pthread_mutex_lock(&(LOCAL_ThreadHandle.tlock_status));
MUTEX_LOCK(&(LOCAL_ThreadHandle.tlock_status));
return Yap_unify(MkIntegerTerm(worker_id), ARG1);
}
@ -453,7 +450,7 @@ p_thread_status_unlock( USES_REGS1 )
/* make sure the lock is available */
if (pthread_getspecific(Yap_yaamregs_key) == NULL)
return FALSE;
pthread_mutex_unlock(&(LOCAL_ThreadHandle.tlock_status));
MUTEX_UNLOCK(&(LOCAL_ThreadHandle.tlock_status));
return Yap_unify(MkIntegerTerm(worker_id), ARG1);
}
@ -492,7 +489,7 @@ Yap_thread_create_engine(thread_attr *ops)
if (!pthread_equal(pthread_self() , GLOBAL_master_thread) ) {
/* we are worker_id 0 for now, lock master thread so that no one messes with us */
pthread_setspecific(Yap_yaamregs_key, (const void *)&Yap_standard_regs);
pthread_mutex_lock(&(REMOTE_ThreadHandle(0).tlock));
MUTEX_LOCK(&(REMOTE_ThreadHandle(0).tlock));
}
if (!init_thread_engine(new_id, ops->ssize, ops->tsize, ops->sysize, &t, &t, &(ops->egoal)))
return -1;
@ -503,7 +500,7 @@ Yap_thread_create_engine(thread_attr *ops)
return -1;
if (!pthread_equal(pthread_self(), GLOBAL_master_thread)) {
pthread_setspecific(Yap_yaamregs_key, NULL);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(0).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(0).tlock));
}
return new_id;
}
@ -514,48 +511,42 @@ Yap_thread_attach_engine(int wid)
CACHE_REGS
/*
already locked
pthread_mutex_lock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_LOCK(&(REMOTE_ThreadHandle(wid).tlock));
*/
if (REMOTE_ThreadHandle(wid).ref_count ) {
REMOTE_ThreadHandle(wid).ref_count++;
REMOTE_ThreadHandle(wid).pthread_handle = pthread_self();
DEBUG_TLOCK_ACCESS(8, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return TRUE;
}
REMOTE_ThreadHandle(wid).pthread_handle = pthread_self();
REMOTE_ThreadHandle(wid).ref_count++;
pthread_setspecific(Yap_yaamregs_key, (const void *)REMOTE_ThreadHandle(wid).current_yaam_regs);
REFRESH_CACHE_REGS;
DEBUG_TLOCK_ACCESS(9, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return TRUE;
}
Int
Yap_thread_detach_engine(int wid)
{
pthread_mutex_lock(&(REMOTE_ThreadHandle(wid).tlock));
DEBUG_TLOCK_ACCESS(10, wid);
MUTEX_LOCK(&(REMOTE_ThreadHandle(wid).tlock));
//REMOTE_ThreadHandle(wid).pthread_handle = 0;
REMOTE_ThreadHandle(wid).ref_count--;
pthread_setspecific(Yap_yaamregs_key, NULL);
DEBUG_TLOCK_ACCESS(11, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return TRUE;
}
Int
Yap_thread_destroy_engine(int wid)
{
pthread_mutex_lock(&(REMOTE_ThreadHandle(wid).tlock));
DEBUG_TLOCK_ACCESS(10, wid);
MUTEX_LOCK(&(REMOTE_ThreadHandle(wid).tlock));
if (REMOTE_ThreadHandle(wid).ref_count == 0) {
kill_thread_engine(wid, TRUE);
return TRUE;
} else {
DEBUG_TLOCK_ACCESS(12, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return FALSE;
}
}
@ -594,8 +585,7 @@ p_thread_destroy( USES_REGS1 )
LOCK(GLOBAL_ThreadHandlesLock);
REMOTE_ThreadHandle(tid).zombie = FALSE;
REMOTE_ThreadHandle(tid).in_use = FALSE;
DEBUG_TLOCK_ACCESS(32, tid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(tid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(tid).tlock));
UNLOCK(GLOBAL_ThreadHandlesLock);
return TRUE;
}
@ -604,18 +594,15 @@ static Int
p_thread_detach( USES_REGS1 )
{
Int tid = IntegerOfTerm(Deref(ARG1));
pthread_mutex_lock(&(REMOTE_ThreadHandle(tid).tlock));
DEBUG_TLOCK_ACCESS(14, tid);
MUTEX_LOCK(&(REMOTE_ThreadHandle(tid).tlock));
if (pthread_detach(REMOTE_ThreadHandle(tid).pthread_handle) < 0) {
/* ERROR */
DEBUG_TLOCK_ACCESS(15, tid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(tid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(tid).tlock));
return FALSE;
}
REMOTE_ThreadHandle(tid).tdetach =
MkAtomTerm(AtomTrue);
DEBUG_TLOCK_ACCESS(30, tid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(tid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(tid).tlock));
return TRUE;
}
@ -735,7 +722,7 @@ p_lock_mutex( USES_REGS1 )
{
SWIMutex *mut = (SWIMutex*)IntegerOfTerm(Deref(ARG1));
if (pthread_mutex_lock(&mut->m) < 0)
if (MUTEX_LOCK(&mut->m) < 0)
return FALSE;
mut->owners++;
mut->tid_own = worker_id;
@ -747,7 +734,7 @@ p_trylock_mutex( USES_REGS1 )
{
SWIMutex *mut = (SWIMutex*)IntegerOfTerm(Deref(ARG1));
if (pthread_mutex_trylock(&mut->m) == EBUSY)
if (MUTEX_TRYLOCK(&mut->m) == EBUSY)
return FALSE;
mut->owners++;
mut->tid_own = worker_id;
@ -759,8 +746,12 @@ p_unlock_mutex( USES_REGS1 )
{
SWIMutex *mut = (SWIMutex*)IntegerOfTerm(Deref(ARG1));
if (pthread_mutex_unlock(&mut->m) < 0)
#if DEBUG_LOCKS
MUTEX_UNLOCK(&mut->m);
#else
if (MUTEX_UNLOCK(&mut->m) < 0)
return FALSE;
#endif
mut->owners--;
return TRUE;
}
@ -836,16 +827,16 @@ p_thread_stacks( USES_REGS1 )
Int status= TRUE;
LOCK(GLOBAL_ThreadHandlesLock);
if (!Yap_local[tid] ||
(!REMOTE_ThreadHandle(tid).in_use && !REMOTE_ThreadHandle(tid).zombie)) {
if (!Yap_local[tid] &&
REMOTE_ThreadHandle(tid).in_use && !REMOTE_ThreadHandle(tid).zombie) {
status &= Yap_unify(ARG2,MkIntegerTerm(REMOTE_ThreadHandle(tid).ssize));
status &= Yap_unify(ARG3,MkIntegerTerm(REMOTE_ThreadHandle(tid).tsize));
status &= Yap_unify(ARG4,MkIntegerTerm(REMOTE_ThreadHandle(tid).sysize));
UNLOCK(GLOBAL_ThreadHandlesLock);
return FALSE;
return status;
}
status &= Yap_unify(ARG2,MkIntegerTerm(REMOTE_ThreadHandle(tid).ssize));
status &= Yap_unify(ARG3,MkIntegerTerm(REMOTE_ThreadHandle(tid).tsize));
status &= Yap_unify(ARG4,MkIntegerTerm(REMOTE_ThreadHandle(tid).sysize));
UNLOCK(GLOBAL_ThreadHandlesLock);
return status;
return FALSE;
}
static Int
@ -888,12 +879,10 @@ p_thread_signal( USES_REGS1 )
{ /* '$thread_signal'(+P) */
Int wid = IntegerOfTerm(Deref(ARG1));
/* make sure the lock is available */
pthread_mutex_lock(&(REMOTE_ThreadHandle(wid).tlock));
DEBUG_TLOCK_ACCESS(16, wid);
MUTEX_LOCK(&(REMOTE_ThreadHandle(wid).tlock));
if (!REMOTE_ThreadHandle(wid).in_use ||
!REMOTE_ThreadHandle(wid).current_yaam_regs) {
DEBUG_TLOCK_ACCESS(17, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return TRUE;
}
LOCK(REMOTE_SignalLock(wid));
@ -901,8 +890,7 @@ p_thread_signal( USES_REGS1 )
Unsigned(REMOTE_ThreadHandle(wid).current_yaam_regs->LCL0_);
REMOTE_ActiveSignals(wid) |= YAP_ITI_SIGNAL;
UNLOCK(REMOTE_SignalLock(wid));
DEBUG_TLOCK_ACCESS(18, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return TRUE;
}
@ -953,7 +941,7 @@ p_thread_runtime( USES_REGS1 )
static Int
p_thread_self_lock( USES_REGS1 )
{ /* '$thread_unlock' */
pthread_mutex_lock(&(LOCAL_ThreadHandle.tlock));
MUTEX_LOCK(&(LOCAL_ThreadHandle.tlock));
return Yap_unify(ARG1,MkIntegerTerm(worker_id));
}
@ -961,8 +949,7 @@ static Int
p_thread_unlock( USES_REGS1 )
{ /* '$thread_unlock' */
Int wid = IntegerOfTerm(Deref(ARG1));
DEBUG_TLOCK_ACCESS(19, wid);
pthread_mutex_unlock(&(REMOTE_ThreadHandle(wid).tlock));
MUTEX_UNLOCK(&(REMOTE_ThreadHandle(wid).tlock));
return TRUE;
}
@ -1006,6 +993,10 @@ void Yap_InitThreadPreds(void)
Yap_InitCPred("$thread_self_lock", 1, p_thread_self_lock, SafePredFlag);
Yap_InitCPred("$thread_run_at_exit", 2, p_thread_atexit, SafePredFlag);
Yap_InitCPred("$thread_unlock", 1, p_thread_unlock, SafePredFlag);
#if DEBUG_LOCKS
Yap_InitCPred("debug_locks", 0, p_debug_locks, SafePredFlag);
Yap_InitCPred("nodebug_locks", 0, p_nodebug_locks, SafePredFlag);
#endif
}
#else
@ -1075,6 +1066,10 @@ void Yap_InitThreadPreds(void)
Yap_InitCPred("$thread_stacks", 4, p_thread_stacks, SafePredFlag);
Yap_InitCPred("$thread_runtime", 1, p_thread_runtime, SafePredFlag);
Yap_InitCPred("$thread_unlock", 1, p_thread_unlock, SafePredFlag);
#if DEBUG_LOCKS
Yap_InitCPred("debug_locks", 0, p_debug_locks, SafePredFlag);
Yap_InitCPred("nodebug_locks", 0, p_nodebug_locks, SafePredFlag);
#endif
}

3
H/nolocks.h
View File

@ -15,3 +15,6 @@
#define INIT_RWLOCK(RWLOCK_VAR)
#define MUTEX_LOCK(LOCK_VAR)
#define MUTEX_TRYLOCK(LOCK_VAR)
#define MUTEX_UNLOCK(LOCK_VAR)

38
OPTYap/locks_pthread.h
View File

@ -20,8 +20,17 @@
#define INIT_LOCK(LOCK_VAR) pthread_mutex_init(&(LOCK_VAR), NULL)
#define DESTROY_LOCK(LOCK_VAR) pthread_mutex_destroy(&(LOCK_VAR))
#define TRY_LOCK(LOCK_VAR) pthread_mutex_trylock(&(LOCK_VAR))
#if DEBUG_LOCKS
#define LOCK(LOCK_VAR) if (debug_locks) fprintf(stderr,"[%d] %s:%d: LOCK(%p)\n", (int)pthread_self(), \
__BASE_FILE__, __LINE__,&(LOCK_VAR)); \
pthread_mutex_lock(&(LOCK_VAR))
#define UNLOCK(LOCK_VAR) if (debug_locks) fprintf(stderr,"[%d] %s:%d: UNLOCK(%p)\n", (int)pthread_self(), \
__BASE_FILE__, __LINE__,&(LOCK_VAR)); \
pthread_mutex_unlock(&(LOCK_VAR))
#else
#define LOCK(LOCK_VAR) pthread_mutex_lock(&(LOCK_VAR))
#define UNLOCK(LOCK_VAR) pthread_mutex_unlock(&(LOCK_VAR))
#endif
static inline int
xIS_LOCKED(pthread_mutex_t *LOCK_VAR) {
if (pthread_mutex_trylock(LOCK_VAR) == 0) {
@ -47,3 +56,32 @@ xIS_UNLOCKED(pthread_mutex_t *LOCK_VAR) {
#define READ_UNLOCK(X) pthread_rwlock_unlock(&(X))
#define WRITE_LOCK(X) pthread_rwlock_wrlock(&(X))
#define WRITE_UNLOCK(X) pthread_rwlock_unlock(&(X))
#if THREADS
/* pthread mutex */
#if DEBUG_LOCKS
#define MUTEX_LOCK(LOCK_VAR) if (debug_locks) fprintf(stderr,"[%d] %s:%d: MULOCK(%p)\n", (int)pthread_self(), \
__BASE_FILE__, __LINE__,(LOCK_VAR)); \
pthread_mutex_lock((LOCK_VAR))
#define MUTEX_TRYLOCK(LOCK_VAR) pthread_mutex_TRYlock((LOCK_VAR))
#define MUTEX_UNLOCK(LOCK_VAR) if (debug_locks) fprintf(stderr,"[%d] %s:%d: UNMULOCK(%p)\n", (int)pthread_self(), \
__BASE_FILE__, __LINE__,(LOCK_VAR)); \
pthread_mutex_unlock((LOCK_VAR))
#else
#define MUTEX_LOCK(LOCK_VAR) pthread_mutex_lock((LOCK_VAR))
#define MUTEX_TRYLOCK(LOCK_VAR) pthread_mutex_trylock((LOCK_VAR))
#define MUTEX_UNLOCK(LOCK_VAR) pthread_mutex_unlock((LOCK_VAR))
#endif
#else
#define MUTEX_LOCK(LOCK_VAR)
#define MUTEX_TRYLOCK(LOCK_VAR)
#define MUTEX_UNLOCK(LOCK_VAR)
#endif

51
OPTYap/locks_x86.h
View File

@ -49,9 +49,28 @@ spin_unlock(spinlock_t *lock)
#endif
}
#define TRY_LOCK(LOCK_VAR) spin_trylock((spinlock_t *)(LOCK_VAR))
#define INIT_LOCK(LOCK_VAR) ((LOCK_VAR) = 0)
#define TRY_LOCK(LOCK_VAR) spin_trylock((spinlock_t *)(LOCK_VAR))
//#define DEBUG_LOCKS 1
#if DEBUG_LOCKS
extern int debug_locks;
#define LOCK(LOCK_VAR) do { \
if (debug_locks) fprintf(stderr,"[%d] %s:%d: LOCK(%p)\n", \
(int)pthread_self(), \
__BASE_FILE__, __LINE__,&(LOCK_VAR)); \
if (TRY_LOCK(&(LOCK_VAR))) break; \
while (IS_LOCKED(LOCK_VAR)) continue; \
} while (1)
#define IS_LOCKED(LOCK_VAR) ((LOCK_VAR) != 0)
#define IS_UNLOCKED(LOCK_VAR) ((LOCK_VAR) == 0)
#define UNLOCK(LOCK_VAR) if (debug_locks) fprintf(stderr,"[%d] %s:%d: UNLOCK(%p)\n", \
(int)pthread_self(), \
__BASE_FILE__, __LINE__,&(LOCK_VAR)); \
spin_unlock((spinlock_t *)&(LOCK_VAR))
#else
#define LOCK(LOCK_VAR) do { \
if (TRY_LOCK(&(LOCK_VAR))) break; \
while (IS_LOCKED(LOCK_VAR)) continue; \
@ -59,6 +78,7 @@ spin_unlock(spinlock_t *lock)
#define IS_LOCKED(LOCK_VAR) ((LOCK_VAR) != 0)
#define IS_UNLOCKED(LOCK_VAR) ((LOCK_VAR) == 0)
#define UNLOCK(LOCK_VAR) spin_unlock((spinlock_t *)&(LOCK_VAR))
#endif
/* the code that follows has been adapted from the Erlang sources */
@ -168,3 +188,32 @@ write_lock(rwlock_t *lock)
#define READ_UNLOCK(lock) read_unlock(&(lock))
#define WRITE_LOCK(lock) write_lock(&(lock))
#define WRITE_UNLOCK(lock) write_unlock(&(lock))
#if THREADS
/* pthread mutex */
#if DEBUG_LOCKS
#define MUTEX_LOCK(LOCK_VAR) ((debug_locks ? fprintf(stderr,"[%d] %s:%d: MULOCK(%p)\n", (int)pthread_self(), \
__BASE_FILE__, __LINE__,(LOCK_VAR)) : 1), \
pthread_mutex_lock((LOCK_VAR)) )
#define MUTEX_TRYLOCK(LOCK_VAR) pthread_mutex_trylock(LOCK_VAR)
#define MUTEX_UNLOCK(LOCK_VAR) if ((debug_locks ? fprintf(stderr,"[%d] %s:%d: MUNLOCK(%p)\n", (int)pthread_self(), \
__BASE_FILE__, __LINE__,(LOCK_VAR)) : 1), \
pthread_mutex_unlock((LOCK_VAR)) )
#else
#define MUTEX_LOCK(LOCK_VAR) pthread_mutex_lock(LOCK_VAR)
#define MUTEX_TRYLOCK(LOCK_VAR) pthread_mutex_trylock(LOCK_VAR)
#define MUTEX_UNLOCK(LOCK_VAR) pthread_mutex_unlock(LOCK_VAR)
#endif
#else
#define MUTEX_LOCK(LOCK_VAR)
#define MUTEX_TRYLOCK(LOCK_VAR)
#define MUTEX_UNLOCK(LOCK_VAR)
#endif