aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/dist.h
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam/dist.h')
-rw-r--r--erts/emulator/beam/dist.h149
1 files changed, 103 insertions, 46 deletions
diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h
index d4765c50b8..b1b7ce9c78 100644
--- a/erts/emulator/beam/dist.h
+++ b/erts/emulator/beam/dist.h
@@ -40,11 +40,51 @@
#define DFLAG_UNICODE_IO 0x1000
#define DFLAG_DIST_HDR_ATOM_CACHE 0x2000
#define DFLAG_SMALL_ATOM_TAGS 0x4000
-#define DFLAG_INTERNAL_TAGS 0x8000
+#define DFLAG_INTERNAL_TAGS 0x8000 /* used by ETS 'compressed' option */
#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 /* internal for pending connection */
+
+/* Mandatory flags for distribution */
+#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.
+ * If remote node (erl_interface) does not supporting these then we may need
+ * to transcode messages enqueued before connection setup was finished.
+ */
+#define DFLAG_DIST_HOPEFULLY (DFLAG_EXPORT_PTR_TAG \
+ | DFLAG_BIT_BINARIES \
+ | DFLAG_DIST_MONITOR \
+ | DFLAG_DIST_MONITOR_NAME)
+
+/* Our preferred set of flags. Used for connection setup handshake */
+#define DFLAG_DIST_DEFAULT (DFLAG_DIST_MANDATORY | DFLAG_DIST_HOPEFULLY \
+ | DFLAG_FUN_TAGS \
+ | DFLAG_NEW_FLOATS \
+ | DFLAG_UNICODE_IO \
+ | DFLAG_DIST_HDR_ATOM_CACHE \
+ | DFLAG_SMALL_ATOM_TAGS \
+ | DFLAG_UTF8_ATOMS \
+ | DFLAG_MAP_TAG \
+ | DFLAG_BIG_CREATION \
+ | DFLAG_SEND_SENDER)
+
+/* Flags addable by local distr implementations */
+#define DFLAG_DIST_ADDABLE DFLAG_DIST_DEFAULT
+
+/* Flags rejectable by local distr implementation */
+#define DFLAG_DIST_REJECTABLE (DFLAG_DIST_HDR_ATOM_CACHE \
+ | DFLAG_HIDDEN_ATOM_CACHE \
+ | DFLAG_ATOM_CACHE)
+
+/* Flags for all features needing strict order delivery */
+#define DFLAG_DIST_STRICT_ORDER DFLAG_DIST_HDR_ATOM_CACHE
/* All flags that should be enabled when term_to_binary/1 is used. */
#define TERM_TO_BINARY_DFLAGS (DFLAG_EXTENDED_REFERENCES \
@@ -79,52 +119,34 @@
#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_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)))
-
-#define ERTS_DE_IS_CONNECTED(DEP) \
- (!ERTS_DE_IS_NOT_CONNECTED((DEP)))
-
#define ERTS_DE_BUSY_LIMIT (1024*1024)
extern int erts_dist_buf_busy_limit;
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
@@ -132,43 +154,80 @@ 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_de_rwlock(dep);
- else
- erts_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 (dep->state == ERTS_DE_STATE_CONNECTED) {
+ res = ERTS_DSIG_PREP_CONNECTED;
+ }
+ else if (dep->state == ERTS_DE_STATE_PENDING) {
+ res = ERTS_DSIG_PREP_PENDING;
+ }
+ else if (dep->state == ERTS_DE_STATE_EXITING) {
+ res = ERTS_DSIG_PREP_NOT_CONNECTED;
+ goto fail;
+ }
+ else if (connect) {
+ ASSERT(dep->state == ERTS_DE_STATE_IDLE);
+ erts_de_runlock(dep);
+ if (!erts_auto_connect(dep, proc, proc_locks)) {
+ return ERTS_DSIG_PREP_NOT_ALIVE;
+ }
+ goto retry;
+ }
+ else {
+ ASSERT(dep->state == ERTS_DE_STATE_IDLE);
+ res = ERTS_DSIG_PREP_NOT_CONNECTED;
goto fail;
}
+
if (no_suspend) {
- if (erts_atomic32_read_acqb(&dep->qflgs) & ERTS_DE_QFLG_BUSY) {
- 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;
@@ -177,15 +236,11 @@ erts_dsig_prepare(ErtsDSigData *dsdp,
dsdp->no_suspend = no_suspend;
if (dspl == ERTS_DSP_NO_LOCK)
erts_de_runlock(dep);
- return ERTS_DSIG_PREP_CONNECTED;
+ return res;
fail:
- if (dspl == ERTS_DSP_RWLOCK)
- erts_de_rwunlock(dep);
- else
- erts_de_runlock(dep);
- return failure;
-
+ erts_de_runlock(dep);
+ return res;
}
ERTS_GLB_INLINE
@@ -291,6 +346,7 @@ typedef struct TTBSizeContext_ {
typedef struct TTBEncodeContext_ {
Uint flags;
+ Uint hopefull_flags;
int level;
byte* ep;
Eterm obj;
@@ -332,7 +388,7 @@ 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;
@@ -346,11 +402,12 @@ 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 2025-01-09 19:46:54 +0000