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-rw-r--r--erts/emulator/beam/dist.c68
-rw-r--r--erts/emulator/beam/dist.h6
-rw-r--r--erts/emulator/beam/erl_bif_trace.c3
-rw-r--r--erts/emulator/beam/erl_db_util.c33
-rw-r--r--erts/emulator/beam/erl_message.c7
-rw-r--r--erts/emulator/beam/erl_proc_sig_queue.c2
-rw-r--r--erts/emulator/beam/erl_process.h17
-rw-r--r--erts/emulator/beam/erlang_dtrace.d15
-rw-r--r--erts/emulator/beam/msg_instrs.tab2
-rw-r--r--erts/emulator/beam/sys.h40
-rw-r--r--lib/kernel/doc/src/seq_trace.xml9
-rw-r--r--lib/kernel/include/dist.hrl1
-rw-r--r--lib/kernel/src/dist_util.erl2
-rw-r--r--lib/kernel/src/seq_trace.erl6
-rw-r--r--lib/kernel/test/seq_trace_SUITE.erl109
15 files changed, 224 insertions, 96 deletions
diff --git a/erts/emulator/beam/dist.c b/erts/emulator/beam/dist.c
index fdf307da1b..f203d85ca9 100644
--- a/erts/emulator/beam/dist.c
+++ b/erts/emulator/beam/dist.c
@@ -937,6 +937,24 @@ erts_dsig_send_demonitor(ErtsDSigData *dsdp, Eterm watcher,
return res;
}
+static int can_send_seqtrace_token(ErtsSendContext* ctx, Eterm token) {
+ Eterm label;
+
+ if (ctx->dep->flags & DFLAG_BIG_SEQTRACE_LABELS) {
+ /* The other end is capable of handling arbitrary seq_trace labels. */
+ return 1;
+ }
+
+ /* The other end only tolerates smalls, but since we could potentially be
+ * talking to an old 32-bit emulator from a 64-bit one, we have to check
+ * whether the label is small on any emulator. */
+ label = SEQ_TRACE_T_LABEL(token);
+
+ return is_small(label) &&
+ signed_val(label) <= (ERTS_SINT32_MAX >> _TAG_IMMED1_SIZE) &&
+ signed_val(label) >= (ERTS_SINT32_MIN >> _TAG_IMMED1_SIZE);
+}
+
int
erts_dsig_send_msg(Eterm remote, Eterm message, ErtsSendContext* ctx)
{
@@ -970,37 +988,38 @@ erts_dsig_send_msg(Eterm remote, Eterm message, ErtsSendContext* ctx)
"%T", remote);
msize = size_object(message);
if (have_seqtrace(token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(token);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
}
}
#endif
- if (token != NIL) {
- Eterm el1, el2;
- if (ctx->dep->flags & DFLAG_SEND_SENDER) {
- el1 = make_small(DOP_SEND_SENDER_TT);
- el2 = sender->common.id;
- }
- else {
- el1 = make_small(DOP_SEND_TT);
- el2 = am_Empty;
- }
- ctl = TUPLE4(&ctx->ctl_heap[0], el1, el2, remote, token);
- }
- else {
- Eterm el1, el2;
+ {
+ Eterm dist_op, sender_id;
+ int send_token;
+
+ send_token = (token != NIL && can_send_seqtrace_token(ctx, token));
+
if (ctx->dep->flags & DFLAG_SEND_SENDER) {
- el1 = make_small(DOP_SEND_SENDER);
- el2 = sender->common.id;
+ dist_op = make_small(send_token ?
+ DOP_SEND_SENDER_TT :
+ DOP_SEND_SENDER);
+ sender_id = sender->common.id;
+ } else {
+ dist_op = make_small(send_token ?
+ DOP_SEND_TT :
+ DOP_SEND);
+ sender_id = am_Empty;
}
- else {
- el1 = make_small(DOP_SEND);
- el2 = am_Empty;
+
+ if (send_token) {
+ ctl = TUPLE4(&ctx->ctl_heap[0], dist_op, sender_id, remote, token);
+ } else {
+ ctl = TUPLE3(&ctx->ctl_heap[0], dist_op, sender_id, remote);
}
- ctl = TUPLE3(&ctx->ctl_heap[0], el1, el2, remote);
}
+
DTRACE6(message_send, sender_name, receiver_name,
msize, tok_label, tok_lastcnt, tok_serial);
DTRACE7(message_send_remote, sender_name, node_name, receiver_name,
@@ -1046,19 +1065,20 @@ erts_dsig_send_reg_msg(Eterm remote_name, Eterm message,
"{%T,%s}", remote_name, node_name);
msize = size_object(message);
if (have_seqtrace(token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(token);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
}
}
#endif
- if (token != NIL)
+ if (token != NIL && can_send_seqtrace_token(ctx, token))
ctl = TUPLE5(&ctx->ctl_heap[0], make_small(DOP_REG_SEND_TT),
sender->common.id, am_Empty, remote_name, token);
else
ctl = TUPLE4(&ctx->ctl_heap[0], make_small(DOP_REG_SEND),
sender->common.id, am_Empty, remote_name);
+
DTRACE6(message_send, sender_name, receiver_name,
msize, tok_label, tok_lastcnt, tok_serial);
DTRACE7(message_send_remote, sender_name, node_name, receiver_name,
@@ -1110,7 +1130,7 @@ erts_dsig_send_exit_tt(ErtsDSigData *dsdp, Eterm local, Eterm remote,
erts_snprintf(reason_str, sizeof(DTRACE_CHARBUF_NAME(reason_str)),
"%T", reason);
if (have_seqtrace(token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(token);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
}
diff --git a/erts/emulator/beam/dist.h b/erts/emulator/beam/dist.h
index c608fef816..dda2029a4c 100644
--- a/erts/emulator/beam/dist.h
+++ b/erts/emulator/beam/dist.h
@@ -45,7 +45,8 @@
#define DFLAG_MAP_TAG 0x20000
#define DFLAG_BIG_CREATION 0x40000
#define DFLAG_SEND_SENDER 0x80000
-#define DFLAG_NO_MAGIC 0x100000 /* internal for pending connection */
+#define DFLAG_BIG_SEQTRACE_LABELS 0x100000
+#define DFLAG_NO_MAGIC 0x200000 /* internal for pending connection */
/* Mandatory flags for distribution */
#define DFLAG_DIST_MANDATORY (DFLAG_EXTENDED_REFERENCES \
@@ -73,7 +74,8 @@
| DFLAG_UTF8_ATOMS \
| DFLAG_MAP_TAG \
| DFLAG_BIG_CREATION \
- | DFLAG_SEND_SENDER)
+ | DFLAG_SEND_SENDER \
+ | DFLAG_BIG_SEQTRACE_LABELS)
/* Flags addable by local distr implementations */
#define DFLAG_DIST_ADDABLE DFLAG_DIST_DEFAULT
diff --git a/erts/emulator/beam/erl_bif_trace.c b/erts/emulator/beam/erl_bif_trace.c
index a076f0bf54..1953f79d79 100644
--- a/erts/emulator/beam/erl_bif_trace.c
+++ b/erts/emulator/beam/erl_bif_trace.c
@@ -1807,9 +1807,6 @@ Eterm erts_seq_trace(Process *p, Eterm arg1, Eterm arg2,
return old_value;
}
else if (arg1 == am_label) {
- if (! is_small(arg2)) {
- return THE_NON_VALUE;
- }
new_seq_trace_token(p);
if (build_result) {
old_value = SEQ_TRACE_TOKEN_LABEL(p);
diff --git a/erts/emulator/beam/erl_db_util.c b/erts/emulator/beam/erl_db_util.c
index 1e8e9e5e94..3836f28aa4 100644
--- a/erts/emulator/beam/erl_db_util.c
+++ b/erts/emulator/beam/erl_db_util.c
@@ -2508,25 +2508,20 @@ restart:
if (have_no_seqtrace(SEQ_TRACE_TOKEN(c_p)))
*esp++ = NIL;
else {
- Eterm sender = SEQ_TRACE_TOKEN_SENDER(c_p);
- Uint sender_sz = is_immed(sender) ? 0 : size_object(sender);
- ehp = HAllocX(build_proc, 6 + sender_sz, HEAP_XTRA);
- if (sender_sz) {
- sender = copy_struct(sender, sender_sz, &ehp, &MSO(build_proc));
- }
- *esp++ = make_tuple(ehp);
- ehp[0] = make_arityval(5);
- ehp[1] = SEQ_TRACE_TOKEN_FLAGS(c_p);
- ehp[2] = SEQ_TRACE_TOKEN_LABEL(c_p);
- ehp[3] = SEQ_TRACE_TOKEN_SERIAL(c_p);
- ehp[4] = sender;
- ehp[5] = SEQ_TRACE_TOKEN_LASTCNT(c_p);
- ASSERT(SEQ_TRACE_TOKEN_ARITY(c_p) == 5);
- ASSERT(is_immed(ehp[1]));
- ASSERT(is_immed(ehp[2]));
- ASSERT(is_immed(ehp[3]));
- ASSERT(is_immed(ehp[5]));
- }
+ Eterm token;
+ Uint token_sz;
+
+ ASSERT(SEQ_TRACE_TOKEN_ARITY(c_p) == 5);
+ ASSERT(is_immed(SEQ_TRACE_TOKEN_FLAGS(c_p)));
+ ASSERT(is_immed(SEQ_TRACE_TOKEN_SERIAL(c_p)));
+ ASSERT(is_immed(SEQ_TRACE_TOKEN_LASTCNT(c_p)));
+
+ token = SEQ_TRACE_TOKEN(c_p);
+ token_sz = size_object(token);
+
+ ehp = HAllocX(build_proc, token_sz, HEAP_XTRA);
+ *esp++ = copy_struct(token, token_sz, &ehp, &MSO(build_proc));
+ }
break;
case matchEnableTrace:
ASSERT(c_p == self);
diff --git a/erts/emulator/beam/erl_message.c b/erts/emulator/beam/erl_message.c
index 98feb95d99..51b7865c0b 100644
--- a/erts/emulator/beam/erl_message.c
+++ b/erts/emulator/beam/erl_message.c
@@ -315,7 +315,7 @@ erts_queue_dist_message(Process *rcvr,
dtrace_proc_str(rcvr, receiver_name);
if (have_seqtrace(token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(token));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(token);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token));
}
@@ -640,7 +640,8 @@ erts_send_message(Process* sender,
seq_trace_update_send(sender);
seq_trace_output(stoken, message, SEQ_TRACE_SEND,
receiver->common.id, sender);
- seq_trace_size = 6; /* TUPLE5 */
+
+ seq_trace_size = size_object(stoken);
}
#ifdef USE_VM_PROBES
if (DT_UTAG_FLAGS(sender) & DT_UTAG_SPREADING) {
@@ -689,7 +690,7 @@ erts_send_message(Process* sender,
}
if (DTRACE_ENABLED(message_send)) {
if (have_seqtrace(stoken)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(stoken));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(stoken);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(stoken));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(stoken));
}
diff --git a/erts/emulator/beam/erl_proc_sig_queue.c b/erts/emulator/beam/erl_proc_sig_queue.c
index 99d20e9242..1ba0b789ec 100644
--- a/erts/emulator/beam/erl_proc_sig_queue.c
+++ b/erts/emulator/beam/erl_proc_sig_queue.c
@@ -3223,7 +3223,7 @@ handle_message_enqueued_tracing(Process *c_p,
Eterm seq_trace_token = ERL_MESSAGE_TOKEN(msg);
if (seq_trace_token != NIL && is_tuple(seq_trace_token)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(seq_trace_token));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(seq_trace_token);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(seq_trace_token));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(seq_trace_token));
}
diff --git a/erts/emulator/beam/erl_process.h b/erts/emulator/beam/erl_process.h
index 0550fb05b5..256b8b7d16 100644
--- a/erts/emulator/beam/erl_process.h
+++ b/erts/emulator/beam/erl_process.h
@@ -1250,7 +1250,24 @@ void erts_check_for_holes(Process* p);
#define SEQ_TRACE_T_SENDER(token) (*(tuple_val(token) + 4))
#define SEQ_TRACE_T_LASTCNT(token) (*(tuple_val(token) + 5))
+#ifdef USE_VM_PROBES
+/* The dtrace probe for seq_trace only supports 'int' labels, so we represent
+ * all values that won't fit into a 32-bit signed integer as ERTS_SINT32_MIN
+ * (bigints, tuples, etc). */
+
+#define SEQ_TRACE_T_DTRACE_LABEL(token) \
+ DTRACE_SEQ_TRACE_LABEL__(SEQ_TRACE_T_LABEL(token))
+
+#define DTRACE_SEQ_TRACE_LABEL__(label_term) \
+ (is_small((label_term)) ? \
+ ((signed_val((label_term)) <= ERTS_SINT32_MAX && \
+ signed_val((label_term)) >= ERTS_SINT32_MIN) ? \
+ signed_val((label_term)) : ERTS_SINT32_MIN) \
+ : ERTS_SINT32_MIN)
+#endif
+
/*
+
* Possible flags for the flags field in ErlSpawnOpts below.
*/
diff --git a/erts/emulator/beam/erlang_dtrace.d b/erts/emulator/beam/erlang_dtrace.d
index d0b10e0306..c47a37eb62 100644
--- a/erts/emulator/beam/erlang_dtrace.d
+++ b/erts/emulator/beam/erlang_dtrace.d
@@ -55,7 +55,8 @@ provider erlang {
* @param sender the PID (string form) of the sender
* @param receiver the PID (string form) of the receiver
* @param size the size of the message being delivered (words)
- * @param token_label for the sender's sequential trace token
+ * @param token_label for the sender's sequential trace token. This will be
+ * INT_MIN if the label does not fit into a 32-bit integer.
* @param token_previous count for the sender's sequential trace token
* @param token_current count for the sender's sequential trace token
*/
@@ -73,7 +74,8 @@ provider erlang {
* @param node_name the Erlang node name (string form) of the receiver
* @param receiver the PID/name (string form) of the receiver
* @param size the size of the message being delivered (words)
- * @param token_label for the sender's sequential trace token
+ * @param token_label for the sender's sequential trace token. This will be
+ * INT_MIN if the label does not fit into a 32-bit integer.
* @param token_previous count for the sender's sequential trace token
* @param token_current count for the sender's sequential trace token
*/
@@ -98,7 +100,8 @@ provider erlang {
* @param receiver the PID (string form) of the receiver
* @param size the size of the message being delivered (words)
* @param queue_len length of the queue of the receiving process
- * @param token_label for the sender's sequential trace token
+ * @param token_label for the sender's sequential trace token. This will be
+ * INT_MIN if the label does not fit into a 32-bit integer.
* @param token_previous count for the sender's sequential trace token
* @param token_current count for the sender's sequential trace token
*/
@@ -122,7 +125,8 @@ provider erlang {
* @param receiver the PID (string form) of the receiver
* @param size the size of the message being delivered (words)
* @param queue_len length of the queue of the receiving process
- * @param token_label for the sender's sequential trace token
+ * @param token_label for the sender's sequential trace token. This will be
+ * INT_MIN if the label does not fit into a 32-bit integer.
* @param token_previous count for the sender's sequential trace token
* @param token_current count for the sender's sequential trace token
*/
@@ -273,7 +277,8 @@ provider erlang {
* @param node_name the Erlang node name (string form) of the receiver
* @param receiver the PID (string form) of the process receiving EXIT signal
* @param reason the reason for the exit (may be truncated)
- * @param token_label for the sender's sequential trace token
+ * @param token_label for the sender's sequential trace token. This will be
+ * INT_MIN if the label does not fit into a 32-bit integer.
* @param token_previous count for the sender's sequential trace token
* @param token_current count for the sender's sequential trace token
*/
diff --git a/erts/emulator/beam/msg_instrs.tab b/erts/emulator/beam/msg_instrs.tab
index 6055e35717..289436da6f 100644
--- a/erts/emulator/beam/msg_instrs.tab
+++ b/erts/emulator/beam/msg_instrs.tab
@@ -229,7 +229,7 @@ remove_message() {
dtrace_proc_str(c_p, receiver_name);
token2 = SEQ_TRACE_TOKEN(c_p);
if (have_seqtrace(token2)) {
- tok_label = signed_val(SEQ_TRACE_T_LABEL(token2));
+ tok_label = SEQ_TRACE_T_DTRACE_LABEL(token2);
tok_lastcnt = signed_val(SEQ_TRACE_T_LASTCNT(token2));
tok_serial = signed_val(SEQ_TRACE_T_SERIAL(token2));
}
diff --git a/erts/emulator/beam/sys.h b/erts/emulator/beam/sys.h
index c21acadd8d..be6ab57eeb 100644
--- a/erts/emulator/beam/sys.h
+++ b/erts/emulator/beam/sys.h
@@ -366,29 +366,11 @@ typedef UWord BeamInstr;
# define HAVE_INT64 1
typedef unsigned long Uint64;
typedef long Sint64;
-# ifdef ULONG_MAX
-# define ERTS_UINT64_MAX ULONG_MAX
-# endif
-# ifdef LONG_MAX
-# define ERTS_SINT64_MAX LONG_MAX
-# endif
-# ifdef LONG_MIN
-# define ERTS_SINT64_MIN LONG_MIN
-# endif
# define ErtsStrToSint64 strtol
# elif SIZEOF_LONG_LONG == 8
# define HAVE_INT64 1
typedef unsigned long long Uint64;
typedef long long Sint64;
-# ifdef ULLONG_MAX
-# define ERTS_UINT64_MAX ULLONG_MAX
-# endif
-# ifdef LLONG_MAX
-# define ERTS_SINT64_MAX LLONG_MAX
-# endif
-# ifdef LLONG_MIN
-# define ERTS_SINT64_MIN LLONG_MIN
-# endif
# define ErtsStrToSint64 strtoll
# else
# error "No 64-bit integer type found"
@@ -402,7 +384,7 @@ typedef long long Sint64;
# define ERTS_SINT64_MAX ((Sint64) ((((Uint64) 1) << 63)-1))
#endif
#ifndef ERTS_SINT64_MIN
-# define ERTS_SINT64_MIN (-1*(((Sint64) 1) << 63))
+# define ERTS_SINT64_MIN ((Sint64) ((((Uint64) 1) << 63)))
#endif
#if SIZEOF_LONG == 4
@@ -415,6 +397,16 @@ typedef int Sint32;
#error Found no appropriate type to use for 'Uint32' and 'Sint32'
#endif
+#ifndef ERTS_UINT32_MAX
+# define ERTS_UINT32_MAX (~((Uint32) 0))
+#endif
+#ifndef ERTS_SINT32_MAX
+# define ERTS_SINT32_MAX ((Sint32) ((((Uint32) 1) << 31)-1))
+#endif
+#ifndef ERTS_SINT32_MIN
+# define ERTS_SINT32_MIN ((Sint32) ((((Uint32) 1) << 31)))
+#endif
+
#if SIZEOF_INT == 2
typedef unsigned int Uint16;
typedef int Sint16;
@@ -425,6 +417,16 @@ typedef short Sint16;
#error Found no appropriate type to use for 'Uint16' and 'Sint16'
#endif
+#ifndef ERTS_UINT16_MAX
+# define ERTS_UINT16_MAX (~((Uint16) 0))
+#endif
+#ifndef ERTS_SINT16_MAX
+# define ERTS_SINT16_MAX ((Sint16) ((((Uint16) 1) << 15)-1))
+#endif
+#ifndef ERTS_SINT16_MIN
+# define ERTS_SINT16_MIN ((Sint16) ((((Uint16) 1) << 15)))
+#endif
+
#if CHAR_BIT == 8
typedef unsigned char byte;
#else
diff --git a/lib/kernel/doc/src/seq_trace.xml b/lib/kernel/doc/src/seq_trace.xml
index 197851021f..69eb12a8a0 100644
--- a/lib/kernel/doc/src/seq_trace.xml
+++ b/lib/kernel/doc/src/seq_trace.xml
@@ -80,13 +80,18 @@ seq_trace:set_token(OldToken), % activate the trace token again
<p>Sets the individual <c><anno>Component</anno></c> of the trace token to
<c><anno>Val</anno></c>. Returns the previous value of the component.</p>
<taglist>
- <tag><c>set_token(label, <anno>Integer</anno>)</c></tag>
+ <tag><c>set_token(label, <anno>Label</anno>)</c></tag>
<item>
- <p>The <c>label</c> component is an integer which
+ <p>The <c>label</c> component is a term which
identifies all events belonging to the same sequential
trace. If several sequential traces can be active
simultaneously, <c>label</c> is used to identify
the separate traces. Default is 0.</p>
+ <warning>
+ <p>Labels were restricted to small signed integers (28 bits)
+ prior to OTP 21. The trace token will be silenty dropped if it
+ crosses over to a node that does not support the label.</p>
+ </warning>
</item>
<tag><c>set_token(serial, SerialValue)</c></tag>
<item>
diff --git a/lib/kernel/include/dist.hrl b/lib/kernel/include/dist.hrl
index b7c35712a6..6baaa35d72 100644
--- a/lib/kernel/include/dist.hrl
+++ b/lib/kernel/include/dist.hrl
@@ -41,6 +41,7 @@
-define(DFLAG_MAP_TAG, 16#20000).
-define(DFLAG_BIG_CREATION, 16#40000).
-define(DFLAG_SEND_SENDER, 16#80000).
+-define(DFLAG_BIG_SEQTRACE_LABELS, 16#100000).
%% Also update dflag2str() in ../src/dist_util.erl
%% when adding flags...
diff --git a/lib/kernel/src/dist_util.erl b/lib/kernel/src/dist_util.erl
index f7a84c14b4..781397e1ee 100644
--- a/lib/kernel/src/dist_util.erl
+++ b/lib/kernel/src/dist_util.erl
@@ -113,6 +113,8 @@ dflag2str(?DFLAG_BIG_CREATION) ->
"BIG_CREATION";
dflag2str(?DFLAG_SEND_SENDER) ->
"SEND_SENDER";
+dflag2str(?DFLAG_BIG_SEQTRACE_LABELS) ->
+ "BIG_SEQTRACE_LABELS";
dflag2str(_) ->
"UNKNOWN".
diff --git a/lib/kernel/src/seq_trace.erl b/lib/kernel/src/seq_trace.erl
index cc0c10909b..8d7aba0f27 100644
--- a/lib/kernel/src/seq_trace.erl
+++ b/lib/kernel/src/seq_trace.erl
@@ -41,7 +41,7 @@
-type flag() :: 'send' | 'receive' | 'print' | 'timestamp' | 'monotonic_timestamp' | 'strict_monotonic_timestamp'.
-type component() :: 'label' | 'serial' | flag().
--type value() :: (Integer :: non_neg_integer())
+-type value() :: (Label :: term())
| {Previous :: non_neg_integer(),
Current :: non_neg_integer()}
| (Bool :: boolean()).
@@ -59,10 +59,6 @@ set_token({Flags,Label,Serial,_From,Lastcnt}) ->
F = decode_flags(Flags),
set_token2([{label,Label},{serial,{Lastcnt, Serial}} | F]).
-%% We limit the label type to always be a small integer because erl_interface
-%% expects that, the BIF can however "unofficially" handle atoms as well, and
-%% atoms can be used if only Erlang nodes are involved
-
-spec set_token(Component, Val) -> {Component, OldVal} when
Component :: component(),
Val :: value(),
diff --git a/lib/kernel/test/seq_trace_SUITE.erl b/lib/kernel/test/seq_trace_SUITE.erl
index be23a1933f..aae8a83304 100644
--- a/lib/kernel/test/seq_trace_SUITE.erl
+++ b/lib/kernel/test/seq_trace_SUITE.erl
@@ -25,7 +25,7 @@
-export([token_set_get/1, tracer_set_get/1, print/1,
send/1, distributed_send/1, recv/1, distributed_recv/1,
trace_exit/1, distributed_exit/1, call/1, port/1,
- match_set_seq_token/1, gc_seq_token/1]).
+ match_set_seq_token/1, gc_seq_token/1, label_capability_mismatch/1]).
%% internal exports
-export([simple_tracer/2, one_time_receiver/0, one_time_receiver/1,
@@ -47,7 +47,7 @@ all() ->
[token_set_get, tracer_set_get, print, send,
distributed_send, recv, distributed_recv, trace_exit,
distributed_exit, call, port, match_set_seq_token,
- gc_seq_token].
+ gc_seq_token, label_capability_mismatch].
groups() ->
[].
@@ -90,8 +90,8 @@ do_token_set_get(TsType) ->
%% Test that initial seq_trace is disabled
[] = seq_trace:get_token(),
%% Test setting and reading the different fields
- 0 = seq_trace:set_token(label,17),
- {label,17} = seq_trace:get_token(label),
+ 0 = seq_trace:set_token(label,{my_label,1}),
+ {label,{my_label,1}} = seq_trace:get_token(label),
false = seq_trace:set_token(print,true),
{print,true} = seq_trace:get_token(print),
false = seq_trace:set_token(send,true),
@@ -101,12 +101,12 @@ do_token_set_get(TsType) ->
false = seq_trace:set_token(TsType,true),
{TsType,true} = seq_trace:get_token(TsType),
%% Check the whole token
- {Flags,17,0,Self,0} = seq_trace:get_token(), % all flags are set
+ {Flags,{my_label,1},0,Self,0} = seq_trace:get_token(), % all flags are set
%% Test setting and reading the 'serial' field
{0,0} = seq_trace:set_token(serial,{3,5}),
{serial,{3,5}} = seq_trace:get_token(serial),
%% Check the whole token, test that a whole token can be set and get
- {Flags,17,5,Self,3} = seq_trace:get_token(),
+ {Flags,{my_label,1},5,Self,3} = seq_trace:get_token(),
seq_trace:set_token({Flags,19,7,Self,5}),
{Flags,19,7,Self,5} = seq_trace:get_token(),
%% Check that receive timeout does not reset token
@@ -166,11 +166,13 @@ do_send(TsType) ->
seq_trace:reset_trace(),
start_tracer(),
Receiver = spawn(?MODULE,one_time_receiver,[]),
+ Label = make_ref(),
+ seq_trace:set_token(label,Label),
set_token_flags([send, TsType]),
Receiver ! send,
Self = self(),
seq_trace:reset_trace(),
- [{0,{send,_,Self,Receiver,send}, Ts}] = stop_tracer(1),
+ [{Label,{send,_,Self,Receiver,send}, Ts}] = stop_tracer(1),
check_ts(TsType, Ts).
distributed_send(Config) when is_list(Config) ->
@@ -184,14 +186,19 @@ do_distributed_send(TsType) ->
seq_trace:reset_trace(),
start_tracer(),
Receiver = spawn(Node,?MODULE,one_time_receiver,[]),
+
+ %% Make sure complex labels survive the trip.
+ Label = make_ref(),
+ seq_trace:set_token(label,Label),
set_token_flags([send,TsType]),
+
Receiver ! send,
Self = self(),
seq_trace:reset_trace(),
stop_node(Node),
- [{0,{send,_,Self,Receiver,send}, Ts}] = stop_tracer(1),
+ [{Label,{send,_,Self,Receiver,send}, Ts}] = stop_tracer(1),
check_ts(TsType, Ts).
-
+
recv(Config) when is_list(Config) ->
lists:foreach(fun do_recv/1, ?TIMESTAMP_MODES).
@@ -220,7 +227,12 @@ do_distributed_recv(TsType) ->
seq_trace:reset_trace(),
rpc:call(Node,?MODULE,start_tracer,[]),
Receiver = spawn(Node,?MODULE,one_time_receiver,[]),
+
+ %% Make sure complex labels survive the trip.
+ Label = make_ref(),
+ seq_trace:set_token(label,Label),
set_token_flags(['receive',TsType]),
+
Receiver ! 'receive',
%% let the other process receive the message:
receive after 1 -> ok end,
@@ -229,7 +241,7 @@ do_distributed_recv(TsType) ->
Result = rpc:call(Node,?MODULE,stop_tracer,[1]),
stop_node(Node),
ok = io:format("~p~n",[Result]),
- [{0,{'receive',_,Self,Receiver,'receive'}, Ts}] = Result,
+ [{Label,{'receive',_,Self,Receiver,'receive'}, Ts}] = Result,
check_ts(TsType, Ts).
trace_exit(Config) when is_list(Config) ->
@@ -240,7 +252,12 @@ do_trace_exit(TsType) ->
start_tracer(),
Receiver = spawn_link(?MODULE, one_time_receiver, [exit]),
process_flag(trap_exit, true),
+
+ %% Make sure complex labels survive the trip.
+ Label = make_ref(),
+ seq_trace:set_token(label,Label),
set_token_flags([send, TsType]),
+
Receiver ! {before, exit},
%% let the other process receive the message:
receive
@@ -254,8 +271,8 @@ do_trace_exit(TsType) ->
Result = stop_tracer(2),
seq_trace:reset_trace(),
ok = io:format("~p~n", [Result]),
- [{0, {send, {0,1}, Self, Receiver, {before, exit}}, Ts0},
- {0, {send, {1,2}, Receiver, Self,
+ [{Label, {send, {0,1}, Self, Receiver, {before, exit}}, Ts0},
+ {Label, {send, {1,2}, Receiver, Self,
{'EXIT', Receiver, {exit, {before, exit}}}}, Ts1}] = Result,
check_ts(TsType, Ts0),
check_ts(TsType, Ts1).
@@ -291,6 +308,74 @@ do_distributed_exit(TsType) ->
{'EXIT', Receiver, {exit, {before, exit}}}}, Ts}] = Result,
check_ts(TsType, Ts).
+label_capability_mismatch(Config) when is_list(Config) ->
+ Releases = ["20_latest"],
+ Available = [Rel || Rel <- Releases, test_server:is_release_available(Rel)],
+ case Available of
+ [] -> {skipped, "No incompatible releases available"};
+ _ ->
+ lists:foreach(fun do_incompatible_labels/1, Available),
+ lists:foreach(fun do_compatible_labels/1, Available),
+ ok
+ end.
+
+do_incompatible_labels(Rel) ->
+ Cookie = atom_to_list(erlang:get_cookie()),
+ {ok, Node} = test_server:start_node(
+ list_to_atom(atom_to_list(?MODULE)++"_"++Rel), peer,
+ [{args, " -setcookie "++Cookie}, {erl, [{release, Rel}]}]),
+
+ {_,Dir} = code:is_loaded(?MODULE),
+ Mdir = filename:dirname(Dir),
+ true = rpc:call(Node,code,add_patha,[Mdir]),
+ seq_trace:reset_trace(),
+ rpc:call(Node,?MODULE,start_tracer,[]),
+ Receiver = spawn(Node,?MODULE,one_time_receiver,[]),
+
+ %% This node does not support arbitrary labels, so it must fail with a
+ %% timeout as the token is dropped silently.
+ seq_trace:set_token(label,make_ref()),
+ seq_trace:set_token('receive',true),
+
+ Receiver ! 'receive',
+ %% let the other process receive the message:
+ receive after 10 -> ok end,
+ seq_trace:reset_trace(),
+
+ {error,timeout} = rpc:call(Node,?MODULE,stop_tracer,[1]),
+ stop_node(Node),
+ ok.
+
+do_compatible_labels(Rel) ->
+ Cookie = atom_to_list(erlang:get_cookie()),
+ {ok, Node} = test_server:start_node(
+ list_to_atom(atom_to_list(?MODULE)++"_"++Rel), peer,
+ [{args, " -setcookie "++Cookie}, {erl, [{release, Rel}]}]),
+
+ {_,Dir} = code:is_loaded(?MODULE),
+ Mdir = filename:dirname(Dir),
+ true = rpc:call(Node,code,add_patha,[Mdir]),
+ seq_trace:reset_trace(),
+ rpc:call(Node,?MODULE,start_tracer,[]),
+ Receiver = spawn(Node,?MODULE,one_time_receiver,[]),
+
+ %% This node does not support arbitrary labels, but small integers should
+ %% still work.
+ Label = 1234,
+ seq_trace:set_token(label,Label),
+ seq_trace:set_token('receive',true),
+
+ Receiver ! 'receive',
+ %% let the other process receive the message:
+ receive after 10 -> ok end,
+ Self = self(),
+ seq_trace:reset_trace(),
+ Result = rpc:call(Node,?MODULE,stop_tracer,[1]),
+ stop_node(Node),
+ ok = io:format("~p~n",[Result]),
+ [{Label,{'receive',_,Self,Receiver,'receive'}, _}] = Result,
+ ok.
+
call(doc) ->
"Tests special forms {is_seq_trace} and {get_seq_token} "
"in trace match specs.";
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-08 22:13:24 +0000