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Diffstat (limited to 'erts/emulator/beam/dist.h')
-rw-r--r--erts/emulator/beam/dist.h134
1 files changed, 87 insertions, 47 deletions
diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h
index 3e17645997..ea4697815f 100644
--- a/erts/emulator/beam/dist.h
+++ b/erts/emulator/beam/dist.h
@@ -44,6 +44,21 @@
#define DFLAG_UTF8_ATOMS 0x10000
#define DFLAG_MAP_TAG 0x20000
#define DFLAG_BIG_CREATION 0x40000
+#define DFLAG_SEND_SENDER 0x80000
+#define DFLAG_NO_MAGIC 0x100000
+
+/* Mandatory flags for distribution (sync with dist_util.erl) */
+#define DFLAG_DIST_MANDATORY (DFLAG_EXTENDED_REFERENCES \
+ | DFLAG_EXTENDED_PIDS_PORTS \
+ | DFLAG_UTF8_ATOMS \
+ | DFLAG_NEW_FUN_TAGS)
+
+/* Additional optimistic flags when encoding toward pending connection */
+#define DFLAG_DIST_HOPEFULLY (DFLAG_NO_MAGIC \
+ | DFLAG_EXPORT_PTR_TAG \
+ | DFLAG_BIT_BINARIES \
+ | DFLAG_DIST_MONITOR \
+ | DFLAG_DIST_MONITOR_NAME)
/* All flags that should be enabled when term_to_binary/1 is used. */
#define TERM_TO_BINARY_DFLAGS (DFLAG_EXTENDED_REFERENCES \
@@ -74,33 +89,30 @@
#define DOP_DEMONITOR_P 20
#define DOP_MONITOR_P_EXIT 21
+#define DOP_SEND_SENDER 22
+#define DOP_SEND_SENDER_TT 23
+
/* distribution trap functions */
-extern Export* dsend2_trap;
-extern Export* dsend3_trap;
-extern Export* dlink_trap;
-extern Export* dunlink_trap;
extern Export* dmonitor_node_trap;
-extern Export* dgroup_leader_trap;
-extern Export* dexit_trap;
extern Export* dmonitor_p_trap;
typedef enum {
ERTS_DSP_NO_LOCK,
- ERTS_DSP_RLOCK,
- ERTS_DSP_RWLOCK
+ ERTS_DSP_RLOCK
} ErtsDSigPrepLock;
typedef struct {
Process *proc;
DistEntry *dep;
+ Eterm node; /* used if dep == NULL */
Eterm cid;
Eterm connection_id;
int no_suspend;
} ErtsDSigData;
#define ERTS_DE_IS_NOT_CONNECTED(DEP) \
- (ERTS_SMP_LC_ASSERT(erts_lc_rwmtx_is_rlocked(&(DEP)->rwmtx) \
+ (ERTS_LC_ASSERT(erts_lc_rwmtx_is_rlocked(&(DEP)->rwmtx) \
|| erts_lc_rwmtx_is_rwlocked(&(DEP)->rwmtx)), \
(is_nil((DEP)->cid) || ((DEP)->status & ERTS_DE_SFLG_EXITING)))
@@ -113,14 +125,10 @@ extern int erts_is_alive;
/*
* erts_dsig_prepare() prepares a send of a distributed signal.
- * One of the values defined below are returned. If the returned
- * value is another than ERTS_DSIG_PREP_CONNECTED, the
- * distributed signal cannot be sent before appropriate actions
- * have been taken. Appropriate actions would typically be setting
- * up the connection.
+ * One of the values defined below are returned.
*/
-/* Connected; signal can be sent. */
+/* Connected; signals can be enqueued and sent. */
#define ERTS_DSIG_PREP_CONNECTED 0
/* Not connected; connection needs to be set up. */
#define ERTS_DSIG_PREP_NOT_CONNECTED 1
@@ -128,46 +136,80 @@ extern int erts_is_alive;
#define ERTS_DSIG_PREP_WOULD_SUSPEND 2
/* System not alive (distributed) */
#define ERTS_DSIG_PREP_NOT_ALIVE 3
+/* Pending connection; signals can be enqueued */
+#define ERTS_DSIG_PREP_PENDING 4
ERTS_GLB_INLINE int erts_dsig_prepare(ErtsDSigData *,
- DistEntry *,
+ DistEntry*,
Process *,
+ ErtsProcLocks,
ErtsDSigPrepLock,
+ int,
int);
ERTS_GLB_INLINE
void erts_schedule_dist_command(Port *, DistEntry *);
+int erts_auto_connect(DistEntry* dep, Process *proc, ErtsProcLocks proc_locks);
+
#if ERTS_GLB_INLINE_INCL_FUNC_DEF
ERTS_GLB_INLINE int
erts_dsig_prepare(ErtsDSigData *dsdp,
DistEntry *dep,
Process *proc,
+ ErtsProcLocks proc_locks,
ErtsDSigPrepLock dspl,
- int no_suspend)
+ int no_suspend,
+ int connect)
{
- int failure;
+ int res;
+
if (!erts_is_alive)
return ERTS_DSIG_PREP_NOT_ALIVE;
- if (!dep)
- return ERTS_DSIG_PREP_NOT_CONNECTED;
- if (dspl == ERTS_DSP_RWLOCK)
- erts_smp_de_rwlock(dep);
- else
- erts_smp_de_rlock(dep);
- if (ERTS_DE_IS_NOT_CONNECTED(dep)) {
- failure = ERTS_DSIG_PREP_NOT_CONNECTED;
+ if (!dep) {
+ ASSERT(!connect);
+ return ERTS_DSIG_PREP_NOT_CONNECTED;
+ }
+
+#ifdef ERTS_ENABLE_LOCK_CHECK
+ if (connect) {
+ erts_proc_lc_might_unlock(proc, proc_locks);
+ }
+#endif
+
+retry:
+ erts_de_rlock(dep);
+
+ if (ERTS_DE_IS_CONNECTED(dep)) {
+ res = ERTS_DSIG_PREP_CONNECTED;
+ }
+ else if (dep->status & ERTS_DE_SFLG_PENDING) {
+ res = ERTS_DSIG_PREP_PENDING;
+ }
+ else if (dep->status & ERTS_DE_SFLG_EXITING) {
+ res = ERTS_DSIG_PREP_NOT_CONNECTED;
goto fail;
}
+ else if (connect) {
+ ASSERT(dep->status == 0);
+ erts_de_runlock(dep);
+ if (!erts_auto_connect(dep, proc, proc_locks)) {
+ return ERTS_DSIG_PREP_NOT_ALIVE;
+ }
+ goto retry;
+ }
+ else {
+ ASSERT(dep->status == 0);
+ res = ERTS_DSIG_PREP_NOT_CONNECTED;
+ goto fail;
+ }
+
if (no_suspend) {
- failure = ERTS_DSIG_PREP_CONNECTED;
- erts_smp_mtx_lock(&dep->qlock);
- if (dep->qflgs & ERTS_DE_QFLG_BUSY)
- failure = ERTS_DSIG_PREP_WOULD_SUSPEND;
- erts_smp_mtx_unlock(&dep->qlock);
- if (failure == ERTS_DSIG_PREP_WOULD_SUSPEND)
+ if (erts_atomic32_read_acqb(&dep->qflgs) & ERTS_DE_QFLG_BUSY) {
+ res = ERTS_DSIG_PREP_WOULD_SUSPEND;
goto fail;
+ }
}
dsdp->proc = proc;
dsdp->dep = dep;
@@ -175,16 +217,12 @@ erts_dsig_prepare(ErtsDSigData *dsdp,
dsdp->connection_id = dep->connection_id;
dsdp->no_suspend = no_suspend;
if (dspl == ERTS_DSP_NO_LOCK)
- erts_smp_de_runlock(dep);
- return ERTS_DSIG_PREP_CONNECTED;
+ erts_de_runlock(dep);
+ return res;
fail:
- if (dspl == ERTS_DSP_RWLOCK)
- erts_smp_de_rwunlock(dep);
- else
- erts_smp_de_runlock(dep);
- return failure;
-
+ erts_de_runlock(dep);
+ return res;
}
ERTS_GLB_INLINE
@@ -194,7 +232,7 @@ void erts_schedule_dist_command(Port *prt, DistEntry *dist_entry)
Eterm id;
if (prt) {
- ERTS_SMP_LC_ASSERT(erts_lc_is_port_locked(prt));
+ ERTS_LC_ASSERT(erts_lc_is_port_locked(prt));
ASSERT((erts_atomic32_read_nob(&prt->state)
& ERTS_PORT_SFLGS_DEAD) == 0);
ASSERT(prt->dist_entry);
@@ -204,7 +242,7 @@ void erts_schedule_dist_command(Port *prt, DistEntry *dist_entry)
}
else {
ASSERT(dist_entry);
- ERTS_SMP_LC_ASSERT(erts_lc_rwmtx_is_rlocked(&dist_entry->rwmtx)
+ ERTS_LC_ASSERT(erts_lc_rwmtx_is_rlocked(&dist_entry->rwmtx)
|| erts_lc_rwmtx_is_rwlocked(&dist_entry->rwmtx));
ASSERT(is_internal_port(dist_entry->cid));
@@ -212,7 +250,7 @@ void erts_schedule_dist_command(Port *prt, DistEntry *dist_entry)
id = dep->cid;
}
- if (!erts_smp_atomic_xchg_mb(&dep->dist_cmd_scheduled, 1))
+ if (!erts_atomic_xchg_mb(&dep->dist_cmd_scheduled, 1))
erts_port_task_schedule(id, &dep->dist_cmd, ERTS_PORT_TASK_DIST_CMD);
}
@@ -238,7 +276,7 @@ erts_remove_dist_link(ErtsDistLinkData *dldp,
Eterm rid,
DistEntry *dep)
{
- erts_smp_de_links_lock(dep);
+ erts_de_links_lock(dep);
dldp->d_lnk = erts_lookup_link(dep->nlinks, lid);
if (!dldp->d_lnk)
dldp->d_sub_lnk = NULL;
@@ -248,7 +286,7 @@ erts_remove_dist_link(ErtsDistLinkData *dldp,
? NULL
: erts_remove_link(&dep->nlinks, lid));
}
- erts_smp_de_links_unlock(dep);
+ erts_de_links_unlock(dep);
}
ERTS_GLB_INLINE int
@@ -331,7 +369,7 @@ struct erts_dsig_send_context {
Eterm ctl;
Eterm msg;
int force_busy;
- Uint32 pass_through_size;
+ Uint32 max_finalize_prepend;
Uint data_size, dhdr_ext_size;
ErtsAtomCacheMap *acmp;
ErtsDistOutputBuf *obuf;
@@ -345,10 +383,12 @@ struct erts_dsig_send_context {
typedef struct {
int suspend;
+ int connect;
Eterm ctl_heap[6];
ErtsDSigData dsd;
- DistEntry* dep_to_deref;
+ DistEntry *dep;
+ int deref_dep;
struct erts_dsig_send_context dss;
Eterm return_term;
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-11 03:43:01 +0000