aboutsummaryrefslogtreecommitdiffstats
path: root/erts
diff options
context:
space:
mode:
Diffstat (limited to 'erts')
-rw-r--r--erts/emulator/beam/erl_bif_info.c83
-rw-r--r--erts/emulator/beam/erl_lock_count.c27
-rw-r--r--erts/emulator/beam/erl_lock_count.h3
-rw-r--r--erts/emulator/beam/erl_process_lock.c31
-rw-r--r--erts/emulator/beam/io.c45
5 files changed, 144 insertions, 45 deletions
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index f889ccdb93..02a463002c 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -4051,6 +4051,11 @@ static Eterm lcnt_build_result_term(Eterm **hpp, Uint *szp, erts_lcnt_data_t *da
}
#endif
+#ifdef ERTS_ENABLE_LOCK_COUNT
+void enable_io_lock_count(int enable);
+void enable_proc_lock_count(int enable);
+#endif
+
BIF_RETTYPE erts_debug_lock_counters_1(BIF_ALIST_1)
{
#ifdef ERTS_ENABLE_LOCK_COUNT
@@ -4110,48 +4115,50 @@ BIF_RETTYPE erts_debug_lock_counters_1(BIF_ALIST_1)
Eterm* tp = tuple_val(BIF_ARG_1);
switch (arityval(tp[0])) {
- case 2:
+ case 2: {
+ int opt = 0;
+ int val = 0;
if (ERTS_IS_ATOM_STR("copy_save", tp[1])) {
- erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
- erts_smp_thr_progress_block();
- if (tp[2] == am_true) {
-
- res = erts_lcnt_set_rt_opt(ERTS_LCNT_OPT_COPYSAVE) ? am_true : am_false;
-
- } else if (tp[2] == am_false) {
-
- res = erts_lcnt_clear_rt_opt(ERTS_LCNT_OPT_COPYSAVE) ? am_true : am_false;
-
- } else {
- erts_smp_thr_progress_unblock();
- erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
- BIF_ERROR(BIF_P, BADARG);
- }
- erts_smp_thr_progress_unblock();
- erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
- BIF_RET(res);
-
+ opt = ERTS_LCNT_OPT_COPYSAVE;
} else if (ERTS_IS_ATOM_STR("process_locks", tp[1])) {
- erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
- erts_smp_thr_progress_block();
- if (tp[2] == am_true) {
-
- res = erts_lcnt_set_rt_opt(ERTS_LCNT_OPT_PROCLOCK) ? am_true : am_false;
-
- } else if (tp[2] == am_false) {
-
- res = erts_lcnt_set_rt_opt(ERTS_LCNT_OPT_PROCLOCK) ? am_true : am_false;
+ opt = ERTS_LCNT_OPT_PROCLOCK;
+ } else if (ERTS_IS_ATOM_STR("port_locks", tp[1])) {
+ opt = ERTS_LCNT_OPT_PORTLOCK;
+ } else if (ERTS_IS_ATOM_STR("suspend", tp[1])) {
+ opt = ERTS_LCNT_OPT_SUSPEND;
+ } else if (ERTS_IS_ATOM_STR("location", tp[1])) {
+ opt = ERTS_LCNT_OPT_LOCATION;
+ } else {
+ BIF_ERROR(BIF_P, BADARG);
+ }
+ if (tp[2] == am_true) {
+ val = 1;
+ } else if (tp[2] == am_false) {
+ val = 0;
+ } else {
+ BIF_ERROR(BIF_P, BADARG);
+ }
- } else {
- erts_smp_thr_progress_unblock();
- erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
- BIF_ERROR(BIF_P, BADARG);
+ erts_smp_proc_unlock(BIF_P, ERTS_PROC_LOCK_MAIN);
+ erts_smp_thr_progress_block();
+
+ if (val) {
+ res = erts_lcnt_set_rt_opt(opt) ? am_true : am_false;
+ } else {
+ res = erts_lcnt_clear_rt_opt(opt) ? am_true : am_false;
+ }
+ if (res != tp[2]) {
+ if (opt == ERTS_LCNT_OPT_PORTLOCK) {
+ enable_io_lock_count(val);
+ } else if (opt == ERTS_LCNT_OPT_PROCLOCK) {
+ enable_proc_lock_count(val);
}
- erts_smp_thr_progress_unblock();
- erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
- BIF_RET(res);
- }
- break;
+ }
+ erts_smp_thr_progress_unblock();
+ erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
+ BIF_RET(res);
+ break;
+ }
default:
break;
diff --git a/erts/emulator/beam/erl_lock_count.c b/erts/emulator/beam/erl_lock_count.c
index 5518531bcd..741c0cb08e 100644
--- a/erts/emulator/beam/erl_lock_count.c
+++ b/erts/emulator/beam/erl_lock_count.c
@@ -240,7 +240,7 @@ void erts_lcnt_init() {
lcnt_lock();
- erts_lcnt_rt_options = ERTS_LCNT_OPT_PROCLOCK;
+ erts_lcnt_rt_options = ERTS_LCNT_OPT_PROCLOCK | ERTS_LCNT_OPT_LOCATION;
eltd = lcnt_thread_data_alloc();
@@ -312,7 +312,7 @@ void erts_lcnt_list_insert(erts_lcnt_lock_list_t *list, erts_lcnt_lock_t *lock)
}
void erts_lcnt_list_delete(erts_lcnt_lock_list_t *list, erts_lcnt_lock_t *lock) {
-
+
if (lock->next) lock->next->prev = lock->prev;
if (lock->prev) lock->prev->next = lock->next;
if (list->head == lock) list->head = lock->next;
@@ -334,6 +334,10 @@ void erts_lcnt_init_lock(erts_lcnt_lock_t *lock, char *name, Uint16 flag ) {
}
void erts_lcnt_init_lock_x(erts_lcnt_lock_t *lock, char *name, Uint16 flag, Eterm id) {
int i;
+ if (!name) {
+ lock->flag = 0;
+ return;
+ }
lcnt_lock();
lock->next = NULL;
@@ -363,6 +367,8 @@ void erts_lcnt_init_lock_x(erts_lcnt_lock_t *lock, char *name, Uint16 flag, Eter
void erts_lcnt_destroy_lock(erts_lcnt_lock_t *lock) {
erts_lcnt_lock_t *deleted_lock;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
+
lcnt_lock();
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_COPYSAVE) {
@@ -378,6 +384,7 @@ void erts_lcnt_destroy_lock(erts_lcnt_lock_t *lock) {
}
/* delete original */
erts_lcnt_list_delete(erts_lcnt_data->current_locks, lock);
+ lock->flag = 0;
lcnt_unlock();
}
@@ -389,6 +396,7 @@ void erts_lcnt_lock_opt(erts_lcnt_lock_t *lock, Uint16 option) {
erts_lcnt_thread_data_t *eltd;
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
eltd = lcnt_get_thread_data();
@@ -422,6 +430,7 @@ void erts_lcnt_lock(erts_lcnt_lock_t *lock) {
erts_lcnt_thread_data_t *eltd;
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
w_state = ethr_atomic_read(&lock->w_state);
ethr_atomic_inc( &lock->w_state);
@@ -452,6 +461,7 @@ void erts_lcnt_lock_unaquire(erts_lcnt_lock_t *lock) {
/* should check if this thread was "waiting" */
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
ethr_atomic_dec( &lock->w_state);
}
@@ -475,6 +485,7 @@ void erts_lcnt_lock_post_x(erts_lcnt_lock_t *lock, char *file, unsigned int line
#endif
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
#ifdef DEBUG
if (!(lock->flag & (ERTS_LCNT_LT_RWMUTEX | ERTS_LCNT_LT_RWSPINLOCK))) {
@@ -489,9 +500,13 @@ void erts_lcnt_lock_post_x(erts_lcnt_lock_t *lock, char *file, unsigned int line
ASSERT(eltd);
/* if lock was in conflict, time it */
-
- stats = lcnt_get_lock_stats(lock, file, line);
+ if (erts_lcnt_rt_options & ERTS_LCNT_OPT_LOCATION) {
+ stats = lcnt_get_lock_stats(lock, file, line);
+ } else {
+ stats = &lock->stats[0];
+ }
+
if (eltd->timer_set) {
lcnt_time(&timer);
@@ -510,6 +525,7 @@ void erts_lcnt_lock_post_x(erts_lcnt_lock_t *lock, char *file, unsigned int line
void erts_lcnt_unlock_opt(erts_lcnt_lock_t *lock, Uint16 option) {
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
if (option & ERTS_LCNT_LO_WRITE) ethr_atomic_dec(&lock->w_state);
if (option & ERTS_LCNT_LO_READ ) ethr_atomic_dec(&lock->r_state);
}
@@ -520,6 +536,7 @@ void erts_lcnt_unlock(erts_lcnt_lock_t *lock) {
erts_aint_t flowstate;
#endif
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
#ifdef DEBUG
/* flowstate */
flowstate = ethr_atomic_read(&lock->flowstate);
@@ -537,6 +554,7 @@ void erts_lcnt_unlock(erts_lcnt_lock_t *lock) {
void erts_lcnt_trylock_opt(erts_lcnt_lock_t *lock, int res, Uint16 option) {
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
/* Determine lock_state via res instead of state */
if (res != EBUSY) {
if (option & ERTS_LCNT_LO_WRITE) ethr_atomic_inc(&lock->w_state);
@@ -555,6 +573,7 @@ void erts_lcnt_trylock(erts_lcnt_lock_t *lock, int res) {
erts_aint_t flowstate;
#endif
if (erts_lcnt_rt_options & ERTS_LCNT_OPT_SUSPEND) return;
+ if (!ERTS_LCNT_LOCK_TYPE(lock)) return;
if (res != EBUSY) {
#ifdef DEBUG
diff --git a/erts/emulator/beam/erl_lock_count.h b/erts/emulator/beam/erl_lock_count.h
index 6306580ae4..690551c71f 100644
--- a/erts/emulator/beam/erl_lock_count.h
+++ b/erts/emulator/beam/erl_lock_count.h
@@ -89,6 +89,7 @@
#define ERTS_LCNT_OPT_LOCATION (((Uint16) 1) << 1)
#define ERTS_LCNT_OPT_PROCLOCK (((Uint16) 1) << 2)
#define ERTS_LCNT_OPT_COPYSAVE (((Uint16) 1) << 3)
+#define ERTS_LCNT_OPT_PORTLOCK (((Uint16) 1) << 4)
typedef struct {
unsigned long s;
@@ -201,5 +202,7 @@ void erts_lcnt_clear_counters(void);
char *erts_lcnt_lock_type(Uint16 type);
erts_lcnt_data_t *erts_lcnt_get_data(void);
+#define ERTS_LCNT_LOCK_TYPE(lockp) ((lockp)->flag & ERTS_LCNT_LT_ALL)
+
#endif /* ifdef ERTS_ENABLE_LOCK_COUNT */
#endif /* ifndef ERTS_LOCK_COUNT_H__ */
diff --git a/erts/emulator/beam/erl_process_lock.c b/erts/emulator/beam/erl_process_lock.c
index a5a753b798..4437d46ff9 100644
--- a/erts/emulator/beam/erl_process_lock.c
+++ b/erts/emulator/beam/erl_process_lock.c
@@ -1002,7 +1002,7 @@ erts_proc_lock_init(Process *p)
#ifdef ERTS_ENABLE_LOCK_COUNT
void erts_lcnt_proc_lock_init(Process *p) {
-
+ if (erts_lcnt_rt_options & ERTS_LCNT_OPT_PROCLOCK) {
if (p->id != ERTS_INVALID_PID) {
erts_lcnt_init_lock_x(&(p->lock.lcnt_main), "proc_main", ERTS_LCNT_LT_PROCLOCK, p->id);
erts_lcnt_init_lock_x(&(p->lock.lcnt_msgq), "proc_msgq", ERTS_LCNT_LT_PROCLOCK, p->id);
@@ -1014,6 +1014,12 @@ void erts_lcnt_proc_lock_init(Process *p) {
erts_lcnt_init_lock(&(p->lock.lcnt_link), "proc_link", ERTS_LCNT_LT_PROCLOCK);
erts_lcnt_init_lock(&(p->lock.lcnt_status), "proc_status", ERTS_LCNT_LT_PROCLOCK);
}
+ } else {
+ sys_memzero(&(p->lock.lcnt_main), sizeof(p->lock.lcnt_main));
+ sys_memzero(&(p->lock.lcnt_msgq), sizeof(p->lock.lcnt_msgq));
+ sys_memzero(&(p->lock.lcnt_link), sizeof(p->lock.lcnt_link));
+ sys_memzero(&(p->lock.lcnt_status), sizeof(p->lock.lcnt_status));
+ }
}
@@ -1108,6 +1114,29 @@ void erts_lcnt_proc_trylock(erts_proc_lock_t *lock, ErtsProcLocks locks, int res
}
}
+void enable_proc_lock_count (int enable);
+
+void
+enable_proc_lock_count (int enable)
+{
+ int i;
+
+ for (i = 0; i < erts_max_processes; ++i) {
+ Process* p = process_tab[i];
+ if (p) {
+ if (enable) {
+ if (!ERTS_LCNT_LOCK_TYPE(&(p->lock.lcnt_main))) {
+ erts_lcnt_proc_lock_init(p);
+ }
+ } else {
+ if (ERTS_LCNT_LOCK_TYPE(&(p->lock.lcnt_main))) {
+ erts_lcnt_proc_lock_destroy(p);
+ }
+ }
+ }
+ }
+}
+
#endif /* ifdef ERTS_ENABLE_LOCK_COUNT */
diff --git a/erts/emulator/beam/io.c b/erts/emulator/beam/io.c
index 8a2a43bebd..e8f04ef68a 100644
--- a/erts/emulator/beam/io.c
+++ b/erts/emulator/beam/io.c
@@ -625,7 +625,11 @@ erts_open_driver(erts_driver_t* driver, /* Pointer to driver. */
port->lock = erts_alloc(ERTS_ALC_T_PORT_LOCK,
sizeof(erts_smp_mtx_t));
erts_smp_mtx_init_x(port->lock,
+#ifdef ERTS_ENABLE_LOCK_COUNT
+ (erts_lcnt_rt_options & ERTS_LCNT_OPT_PORTLOCK) ? "port_lock" : NULL,
+#else
"port_lock",
+#endif
port->id);
xstatus |= ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK;
}
@@ -783,7 +787,13 @@ driver_create_port(ErlDrvPort creator_port_ix, /* Creating port */
creator_port->xports = xplp;
port->lock = erts_alloc(ERTS_ALC_T_PORT_LOCK,
sizeof(erts_smp_mtx_t));
- erts_smp_mtx_init_locked_x(port->lock, "port_lock", port_id);
+ erts_smp_mtx_init_locked_x(port->lock,
+#ifdef ERTS_ENABLE_LOCK_COUNT
+ (erts_lcnt_rt_options & ERTS_LCNT_OPT_PORTLOCK) ? "port_lock" : NULL,
+#else
+ "port_lock",
+#endif
+ port_id);
xstatus |= ERTS_PORT_SFLG_PORT_SPECIFIC_LOCK;
}
@@ -1347,7 +1357,13 @@ void init_io(void)
erts_smp_atomic_init_nob(&erts_port[i].refc, 0);
erts_port[i].lock = NULL;
erts_port[i].xports = NULL;
- erts_smp_spinlock_init_x(&erts_port[i].state_lck, "port_state", make_small(i));
+ erts_smp_spinlock_init_x(&erts_port[i].state_lck,
+#ifdef ERTS_ENABLE_LOCK_COUNT
+ (erts_lcnt_rt_options & ERTS_LCNT_OPT_PORTLOCK) ? "port_state" : NULL,
+#else
+ "port_state",
+#endif
+ 0);
#endif
erts_port[i].tracer_proc = NIL;
erts_port[i].trace_flags = 0;
@@ -1380,6 +1396,31 @@ void init_io(void)
erts_smp_mtx_unlock(&erts_driver_list_lock);
}
+#ifdef ERTS_ENABLE_LOCK_COUNT
+void enable_io_lock_count (int enable);
+
+void
+enable_io_lock_count (int enable)
+{
+ int i;
+
+ for (i = 0; i < erts_max_ports; i++) {
+ Port* p = &erts_port[i];
+ if (enable) {
+ erts_lcnt_init_lock_x(&p->state_lck.lcnt, "port_state", ERTS_LCNT_LT_SPINLOCK, make_small(i));
+ if (p->lock) {
+ erts_lcnt_init_lock_x(&p->lock->lcnt, "port_lock", ERTS_LCNT_LT_MUTEX, make_small(i));
+ }
+ } else {
+ erts_lcnt_destroy_lock(&p->state_lck.lcnt);
+ if (p->lock) {
+ erts_lcnt_destroy_lock(&p->lock->lcnt);
+ }
+ }
+ }
+}
+#endif
+
/*
* Buffering of data when using line oriented I/O on ports
*/
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-18 16:41:09 +0000