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-rw-r--r--erts/emulator/beam/utils.c310
1 files changed, 296 insertions, 14 deletions
diff --git a/erts/emulator/beam/utils.c b/erts/emulator/beam/utils.c
index bd708ceee6..1969fc762c 100644
--- a/erts/emulator/beam/utils.c
+++ b/erts/emulator/beam/utils.c
@@ -268,16 +268,42 @@ list_length(Eterm list)
return i;
}
-Uint erts_fit_in_bits(Uint n)
+static const struct {
+ Sint64 mask;
+ int bits;
+} fib_data[] = {{ERTS_I64_LITERAL(0x2), 1},
+ {ERTS_I64_LITERAL(0xc), 2},
+ {ERTS_I64_LITERAL(0xf0), 4},
+ {ERTS_I64_LITERAL(0xff00), 8},
+ {ERTS_I64_LITERAL(0xffff0000), 16},
+ {ERTS_I64_LITERAL(0xffffffff00000000), 32}};
+
+static ERTS_INLINE int
+fit_in_bits(Sint64 value, int start)
{
- Uint i;
+ int bits = 0;
+ int i;
- i = 0;
- while (n > 0) {
- i++;
- n >>= 1;
- }
- return i;
+ for (i = start; i >= 0; i--) {
+ if (value & fib_data[i].mask) {
+ value >>= fib_data[i].bits;
+ bits |= fib_data[i].bits;
+ }
+ }
+
+ bits++;
+
+ return bits;
+}
+
+int erts_fit_in_bits_int64(Sint64 value)
+{
+ return fit_in_bits(value, 5);
+}
+
+int erts_fit_in_bits_int32(Sint32 value)
+{
+ return fit_in_bits((Sint64) (Uint32) value, 4);
}
int
@@ -1640,12 +1666,20 @@ static int do_send_to_logger(Eterm tag, Eterm gleader, char *buf, int len)
}
#ifndef ERTS_SMP
- if (
#ifdef USE_THREADS
- !erts_get_scheduler_data() || /* Must be scheduler thread */
+ p = NULL;
+ if (erts_get_scheduler_data()) /* Must be scheduler thread */
#endif
- (p = erts_whereis_process(NULL, 0, am_error_logger, 0, 0)) == NULL
- || p->status == P_RUNNING) {
+ {
+ p = erts_whereis_process(NULL, 0, am_error_logger, 0, 0);
+ if (p) {
+ erts_aint32_t state = erts_smp_atomic32_read_acqb(&p->state);
+ if (state & ERTS_PSFLG_RUNNING)
+ p = NULL;
+ }
+ }
+
+ if (!p) {
/* buf *always* points to a null terminated string */
erts_fprintf(stderr, "(no error logger present) %T: \"%s\"\n",
tag, buf);
@@ -3240,7 +3274,7 @@ ptimer_timeout(ErtsSmpPTimer *ptimer)
ERTS_PROC_LOCK_MAIN|ERTS_PROC_LOCK_STATUS,
ERTS_P2P_FLG_ALLOW_OTHER_X);
if (p) {
- if (!p->is_exiting
+ if (!ERTS_PROC_IS_EXITING(p)
&& !(ptimer->timer.flags & ERTS_PTMR_FLG_CANCELLED)) {
ASSERT(*ptimer->timer.timer_ref == ptimer);
*ptimer->timer.timer_ref = NULL;
@@ -3436,6 +3470,254 @@ void erts_silence_warn_unused_result(long unused)
}
+/*
+ * Interval counts
+ */
+void
+erts_interval_init(erts_interval_t *icp)
+{
+#ifdef ARCH_64
+ erts_atomic_init_nob(&icp->counter.atomic, 0);
+#else
+ erts_dw_aint_t dw;
+#ifdef ETHR_SU_DW_NAINT_T__
+ dw.dw_sint = 0;
+#else
+ dw.sint[ERTS_DW_AINT_HIGH_WORD] = 0;
+ dw.sint[ERTS_DW_AINT_LOW_WORD] = 0;
+#endif
+ erts_dw_atomic_init_nob(&icp->counter.atomic, &dw);
+
+#endif
+#ifdef DEBUG
+ icp->smp_api = 0;
+#endif
+}
+
+void
+erts_smp_interval_init(erts_interval_t *icp)
+{
+#ifdef ERTS_SMP
+ erts_interval_init(icp);
+#else
+ icp->counter.not_atomic = 0;
+#endif
+#ifdef DEBUG
+ icp->smp_api = 1;
+#endif
+}
+
+static ERTS_INLINE Uint64
+step_interval_nob(erts_interval_t *icp)
+{
+#ifdef ARCH_64
+ return (Uint64) erts_atomic_inc_read_nob(&icp->counter.atomic);
+#else
+ erts_dw_aint_t exp;
+
+ erts_dw_atomic_read_nob(&icp->counter.atomic, &exp);
+ while (1) {
+ erts_dw_aint_t new = exp;
+
+#ifdef ETHR_SU_DW_NAINT_T__
+ new.dw_sint++;
+#else
+ new.sint[ERTS_DW_AINT_LOW_WORD]++;
+ if (new.sint[ERTS_DW_AINT_LOW_WORD] == 0)
+ new.sint[ERTS_DW_AINT_HIGH_WORD]++;
+#endif
+
+ if (erts_dw_atomic_cmpxchg_nob(&icp->counter.atomic, &new, &exp))
+ return erts_interval_dw_aint_to_val__(&new);
+
+ }
+#endif
+}
+
+static ERTS_INLINE Uint64
+step_interval_relb(erts_interval_t *icp)
+{
+#ifdef ARCH_64
+ return (Uint64) erts_atomic_inc_read_relb(&icp->counter.atomic);
+#else
+ erts_dw_aint_t exp;
+
+ erts_dw_atomic_read_nob(&icp->counter.atomic, &exp);
+ while (1) {
+ erts_dw_aint_t new = exp;
+
+#ifdef ETHR_SU_DW_NAINT_T__
+ new.dw_sint++;
+#else
+ new.sint[ERTS_DW_AINT_LOW_WORD]++;
+ if (new.sint[ERTS_DW_AINT_LOW_WORD] == 0)
+ new.sint[ERTS_DW_AINT_HIGH_WORD]++;
+#endif
+
+ if (erts_dw_atomic_cmpxchg_relb(&icp->counter.atomic, &new, &exp))
+ return erts_interval_dw_aint_to_val__(&new);
+
+ }
+#endif
+}
+
+
+static ERTS_INLINE Uint64
+ensure_later_interval_nob(erts_interval_t *icp, Uint64 ic)
+{
+ Uint64 curr_ic;
+#ifdef ARCH_64
+ curr_ic = (Uint64) erts_atomic_read_nob(&icp->counter.atomic);
+ if (curr_ic > ic)
+ return curr_ic;
+ return (Uint64) erts_atomic_inc_read_nob(&icp->counter.atomic);
+#else
+ erts_dw_aint_t exp;
+
+ erts_dw_atomic_read_nob(&icp->counter.atomic, &exp);
+ curr_ic = erts_interval_dw_aint_to_val__(&exp);
+ if (curr_ic > ic)
+ return curr_ic;
+
+ while (1) {
+ erts_dw_aint_t new = exp;
+
+#ifdef ETHR_SU_DW_NAINT_T__
+ new.dw_sint++;
+#else
+ new.sint[ERTS_DW_AINT_LOW_WORD]++;
+ if (new.sint[ERTS_DW_AINT_LOW_WORD] == 0)
+ new.sint[ERTS_DW_AINT_HIGH_WORD]++;
+#endif
+
+ if (erts_dw_atomic_cmpxchg_nob(&icp->counter.atomic, &new, &exp))
+ return erts_interval_dw_aint_to_val__(&new);
+
+ curr_ic = erts_interval_dw_aint_to_val__(&exp);
+ if (curr_ic > ic)
+ return curr_ic;
+ }
+#endif
+}
+
+
+static ERTS_INLINE Uint64
+ensure_later_interval_acqb(erts_interval_t *icp, Uint64 ic)
+{
+ Uint64 curr_ic;
+#ifdef ARCH_64
+ curr_ic = (Uint64) erts_atomic_read_acqb(&icp->counter.atomic);
+ if (curr_ic > ic)
+ return curr_ic;
+ return (Uint64) erts_atomic_inc_read_acqb(&icp->counter.atomic);
+#else
+ erts_dw_aint_t exp;
+
+ erts_dw_atomic_read_acqb(&icp->counter.atomic, &exp);
+ curr_ic = erts_interval_dw_aint_to_val__(&exp);
+ if (curr_ic > ic)
+ return curr_ic;
+
+ while (1) {
+ erts_dw_aint_t new = exp;
+
+#ifdef ETHR_SU_DW_NAINT_T__
+ new.dw_sint++;
+#else
+ new.sint[ERTS_DW_AINT_LOW_WORD]++;
+ if (new.sint[ERTS_DW_AINT_LOW_WORD] == 0)
+ new.sint[ERTS_DW_AINT_HIGH_WORD]++;
+#endif
+
+ if (erts_dw_atomic_cmpxchg_acqb(&icp->counter.atomic, &new, &exp))
+ return erts_interval_dw_aint_to_val__(&new);
+
+ curr_ic = erts_interval_dw_aint_to_val__(&exp);
+ if (curr_ic > ic)
+ return curr_ic;
+ }
+#endif
+}
+
+Uint64
+erts_step_interval_nob(erts_interval_t *icp)
+{
+ ASSERT(!icp->smp_api);
+ return step_interval_nob(icp);
+}
+
+Uint64
+erts_step_interval_relb(erts_interval_t *icp)
+{
+ ASSERT(!icp->smp_api);
+ return step_interval_relb(icp);
+}
+
+Uint64
+erts_smp_step_interval_nob(erts_interval_t *icp)
+{
+ ASSERT(icp->smp_api);
+#ifdef ERTS_SMP
+ return step_interval_nob(icp);
+#else
+ return ++icp->counter.not_atomic;
+#endif
+}
+
+Uint64
+erts_smp_step_interval_relb(erts_interval_t *icp)
+{
+ ASSERT(icp->smp_api);
+#ifdef ERTS_SMP
+ return step_interval_relb(icp);
+#else
+ return ++icp->counter.not_atomic;
+#endif
+}
+
+Uint64
+erts_ensure_later_interval_nob(erts_interval_t *icp, Uint64 ic)
+{
+ ASSERT(!icp->smp_api);
+ return ensure_later_interval_nob(icp, ic);
+}
+
+Uint64
+erts_ensure_later_interval_acqb(erts_interval_t *icp, Uint64 ic)
+{
+ ASSERT(!icp->smp_api);
+ return ensure_later_interval_acqb(icp, ic);
+}
+
+Uint64
+erts_smp_ensure_later_interval_nob(erts_interval_t *icp, Uint64 ic)
+{
+ ASSERT(icp->smp_api);
+#ifdef ERTS_SMP
+ return ensure_later_interval_nob(icp, ic);
+#else
+ if (icp->counter.not_atomic > ic)
+ return icp->counter.not_atomic;
+ else
+ return ++icp->counter.not_atomic;
+#endif
+}
+
+Uint64
+erts_smp_ensure_later_interval_acqb(erts_interval_t *icp, Uint64 ic)
+{
+ ASSERT(icp->smp_api);
+#ifdef ERTS_SMP
+ return ensure_later_interval_acqb(icp, ic);
+#else
+ if (icp->counter.not_atomic > ic)
+ return icp->counter.not_atomic;
+ else
+ return ++icp->counter.not_atomic;
+#endif
+}
+
+
#ifdef DEBUG
/*
* Handy functions when using a debugger - don't use in the code!
@@ -3468,7 +3750,7 @@ Process *p;
void ppi(Eterm pid)
{
- pp(erts_pid2proc_unlocked(pid));
+ pp(erts_proc_lookup(pid));
}
void td(Eterm x)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-05 09:43:40 +0000