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-rw-r--r--erts/doc/src/erlang.xml11
-rw-r--r--erts/emulator/beam/atom.names1
-rw-r--r--erts/emulator/beam/erl_bif_info.c30
-rw-r--r--erts/emulator/beam/erl_gc.c51
-rw-r--r--erts/emulator/beam/erl_gc.h5
-rw-r--r--erts/emulator/beam/erl_trace.c57
-rw-r--r--erts/emulator/test/process_SUITE.erl47
-rw-r--r--erts/preloaded/src/erlang.erl2
8 files changed, 151 insertions, 53 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index c3e2ed61e9..10c0d65e31 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -4642,6 +4642,17 @@ os_prompt% </pre>
The content of <c><anno>GCInfo</anno></c> can be changed without
prior notice.</p>
</item>
+ <tag><c>{garbage_collection_info, <anno>GCInfo</anno>}</c></tag>
+ <item>
+ <p><c><anno>GCInfo</anno></c> is a list containing miscellaneous
+ detailed information about garbage collection for this process.
+ The content of <c><anno>GCInfo</anno></c> can be changed without
+ prior notice.
+ See <seealso marker="#gc_start">gc_start</seealso> in
+ <seealso marker="#trace/3">erlang:trace/3</seealso> for details about
+ what each item means.
+ </p>
+ </item>
<tag><c>{group_leader, <anno>GroupLeader</anno>}</c></tag>
<item>
<p><c><anno>GroupLeader</anno></c> is group leader for the I/O of
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index ae7f405cce..898f0fd9df 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -258,6 +258,7 @@ atom functions
atom function_clause
atom garbage_collecting
atom garbage_collection
+atom garbage_collection_info
atom gc_end
atom gc_start
atom Ge='>='
diff --git a/erts/emulator/beam/erl_bif_info.c b/erts/emulator/beam/erl_bif_info.c
index e69908bbef..06e7dc8661 100644
--- a/erts/emulator/beam/erl_bif_info.c
+++ b/erts/emulator/beam/erl_bif_info.c
@@ -592,7 +592,8 @@ static Eterm pi_args[] = {
am_min_bin_vheap_size,
am_current_location,
am_current_stacktrace,
- am_message_queue_data
+ am_message_queue_data,
+ am_garbage_collection_info
};
#define ERTS_PI_ARGS ((int) (sizeof(pi_args)/sizeof(Eterm)))
@@ -641,6 +642,7 @@ pi_arg2ix(Eterm arg)
case am_current_location: return 29;
case am_current_stacktrace: return 30;
case am_message_queue_data: return 31;
+ case am_garbage_collection_info: return 32;
default: return -1;
}
}
@@ -1398,6 +1400,32 @@ process_info_aux(Process *BIF_P,
break;
}
+ case am_garbage_collection_info: {
+ Uint sz = 0, actual_sz = 0;
+
+ if (rp == BIF_P) {
+ sz += ERTS_PROCESS_GC_INFO_MAX_SIZE;
+ } else {
+ erts_process_gc_info(rp, &sz, NULL);
+ sz += 3;
+ }
+
+ hp = HAlloc(BIF_P, sz);
+ res = erts_process_gc_info(rp, &actual_sz, &hp);
+
+ /* We may have some extra space, fill with 0 tuples */
+ if (actual_sz <= sz - 3) {
+ for (; actual_sz < sz - 3; hp++, actual_sz++)
+ hp[0] = make_arityval(0);
+ } else {
+ for (; actual_sz < sz; hp++, actual_sz++)
+ hp[0] = make_arityval(0);
+ hp = HAlloc(BIF_P, 3);
+ }
+
+ break;
+ }
+
case am_group_leader: {
int sz = NC_HEAP_SIZE(rp->group_leader);
hp = HAlloc(BIF_P, 3 + sz);
diff --git a/erts/emulator/beam/erl_gc.c b/erts/emulator/beam/erl_gc.c
index 0f86b9a25c..6839c24c25 100644
--- a/erts/emulator/beam/erl_gc.c
+++ b/erts/emulator/beam/erl_gc.c
@@ -2947,6 +2947,57 @@ erts_gc_info_request(Process *c_p)
return ref;
}
+Eterm
+erts_process_gc_info(Process *p, Uint *sizep, Eterm **hpp)
+{
+ ERTS_DECL_AM(bin_vheap_size);
+ ERTS_DECL_AM(bin_vheap_block_size);
+ ERTS_DECL_AM(bin_old_vheap_size);
+ ERTS_DECL_AM(bin_old_vheap_block_size);
+ Eterm tags[] = {
+ /* If you increase the number of elements here, make sure to update
+ any call sites as they may have stack allocations that depend
+ on the number of elements here. */
+ am_old_heap_block_size,
+ am_heap_block_size,
+ am_mbuf_size,
+ am_recent_size,
+ am_stack_size,
+ am_old_heap_size,
+ am_heap_size,
+ AM_bin_vheap_size,
+ AM_bin_vheap_block_size,
+ AM_bin_old_vheap_size,
+ AM_bin_old_vheap_block_size
+ };
+ UWord values[] = {
+ OLD_HEAP(p) ? OLD_HEND(p) - OLD_HEAP(p) : 0,
+ HEAP_SIZE(p),
+ MBUF_SIZE(p),
+ HIGH_WATER(p) - HEAP_START(p),
+ STACK_START(p) - p->stop,
+ OLD_HEAP(p) ? OLD_HTOP(p) - OLD_HEAP(p) : 0,
+ HEAP_TOP(p) - HEAP_START(p),
+ MSO(p).overhead,
+ BIN_VHEAP_SZ(p),
+ BIN_OLD_VHEAP(p),
+ BIN_OLD_VHEAP_SZ(p)
+ };
+
+ Eterm res = THE_NON_VALUE;
+
+ ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == sizeof(tags)/sizeof(*tags));
+ ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == ERTS_PROCESS_GC_INFO_MAX_TERMS);
+
+ res = erts_bld_atom_uword_2tup_list(hpp,
+ sizep,
+ sizeof(values)/sizeof(*values),
+ tags,
+ values);
+
+ return res;
+}
+
#if defined(DEBUG) || defined(ERTS_OFFHEAP_DEBUG)
static int
diff --git a/erts/emulator/beam/erl_gc.h b/erts/emulator/beam/erl_gc.h
index d603866cbf..2cedd9361f 100644
--- a/erts/emulator/beam/erl_gc.h
+++ b/erts/emulator/beam/erl_gc.h
@@ -132,6 +132,11 @@ typedef struct {
Uint64 garbage_cols;
} ErtsGCInfo;
+#define ERTS_PROCESS_GC_INFO_MAX_TERMS (11) /* number of elements in process_gc_info*/
+#define ERTS_PROCESS_GC_INFO_MAX_SIZE \
+ (ERTS_PROCESS_GC_INFO_MAX_TERMS * (2/*cons*/ + 3/*2-tuple*/ + BIG_UINT_HEAP_SIZE))
+Eterm erts_process_gc_info(struct process*, Uint *, Eterm **);
+
void erts_gc_info(ErtsGCInfo *gcip);
void erts_init_gc(void);
int erts_garbage_collect_nobump(struct process*, int, Eterm*, int);
diff --git a/erts/emulator/beam/erl_trace.c b/erts/emulator/beam/erl_trace.c
index b774ba97af..c2efb404d6 100644
--- a/erts/emulator/beam/erl_trace.c
+++ b/erts/emulator/beam/erl_trace.c
@@ -2140,11 +2140,6 @@ void save_calls(Process *p, Export *e)
void
trace_gc(Process *p, Eterm what)
{
- ERTS_DECL_AM(bin_vheap_size);
- ERTS_DECL_AM(bin_vheap_block_size);
- ERTS_DECL_AM(bin_old_vheap_size);
- ERTS_DECL_AM(bin_old_vheap_block_size);
-
ErlHeapFragment *bp = NULL;
ErlOffHeap *off_heap;
ERTS_TRACER_REF_TYPE tracer_ref = ERTS_NULL_TRACER_REF; /* Initialized
@@ -2155,55 +2150,22 @@ trace_gc(Process *p, Eterm what)
Eterm msg = NIL;
Uint size;
- Eterm tags[] = {
- am_old_heap_block_size,
- am_heap_block_size,
- am_mbuf_size,
- am_recent_size,
- am_stack_size,
- am_old_heap_size,
- am_heap_size,
- AM_bin_vheap_size,
- AM_bin_vheap_block_size,
- AM_bin_old_vheap_size,
- AM_bin_old_vheap_block_size
- };
-
- UWord values[] = {
- OLD_HEAP(p) ? OLD_HEND(p) - OLD_HEAP(p) : 0,
- HEAP_SIZE(p),
- MBUF_SIZE(p),
- HIGH_WATER(p) - HEAP_START(p),
- STACK_START(p) - p->stop,
- OLD_HEAP(p) ? OLD_HTOP(p) - OLD_HEAP(p) : 0,
- HEAP_TOP(p) - HEAP_START(p),
- MSO(p).overhead,
- BIN_VHEAP_SZ(p),
- BIN_OLD_VHEAP(p),
- BIN_OLD_VHEAP_SZ(p)
- };
#define LOCAL_HEAP_SIZE \
- (sizeof(values)/sizeof(*values)) * \
- (2/*cons*/ + 3/*2-tuple*/ + BIG_UINT_HEAP_SIZE) + \
+ (ERTS_PROCESS_GC_INFO_MAX_SIZE) + \
5/*4-tuple */ + TS_HEAP_WORDS
DeclareTmpHeap(local_heap,LOCAL_HEAP_SIZE,p);
#ifdef DEBUG
Eterm* limit;
#endif
- ERTS_CT_ASSERT(sizeof(values)/sizeof(*values) == sizeof(tags)/sizeof(Eterm));
-
UseTmpHeap(LOCAL_HEAP_SIZE,p);
if (is_internal_port(ERTS_TRACER_PROC(p))) {
hp = local_heap;
#ifdef DEBUG
size = 0;
- (void) erts_bld_atom_uword_2tup_list(NULL,
- &size,
- sizeof(values)/sizeof(*values),
- tags,
- values);
+ (void) erts_process_gc_info(p, &size, NULL);
+
size += 5/*4-tuple*/ + TS_SIZE(p);
#endif
} else {
@@ -2214,11 +2176,8 @@ trace_gc(Process *p, Eterm what)
ERTS_TRACE_FLAGS(p));
size = 0;
- (void) erts_bld_atom_uword_2tup_list(NULL,
- &size,
- sizeof(values)/sizeof(*values),
- tags,
- values);
+ (void) erts_process_gc_info(p, &size, NULL);
+
size += 5/*4-tuple*/ + TS_SIZE(p);
hp = ERTS_ALLOC_SYSMSG_HEAP(size, &bp, &off_heap, tracer_ref);
@@ -2229,11 +2188,7 @@ trace_gc(Process *p, Eterm what)
ASSERT(size <= LOCAL_HEAP_SIZE);
#endif
- msg = erts_bld_atom_uword_2tup_list(&hp,
- NULL,
- sizeof(values)/sizeof(*values),
- tags,
- values);
+ msg = erts_process_gc_info(p, NULL, &hp);
msg = TUPLE4(hp, am_trace, p->common.id, what, msg);
hp += 5;
diff --git a/erts/emulator/test/process_SUITE.erl b/erts/emulator/test/process_SUITE.erl
index 97aa5e573e..bfd1e78bf0 100644
--- a/erts/emulator/test/process_SUITE.erl
+++ b/erts/emulator/test/process_SUITE.erl
@@ -41,6 +41,7 @@
process_info_2_list/1, process_info_lock_reschedule/1,
process_info_lock_reschedule2/1,
process_info_lock_reschedule3/1,
+ process_info_garbage_collection/1,
bump_reductions/1, low_prio/1, binary_owner/1, yield/1, yield2/1,
process_status_exiting/1,
otp_4725/1, bad_register/1, garbage_collect/1, otp_6237/1,
@@ -75,7 +76,9 @@ all() ->
process_info_other_dist_msg, process_info_2_list,
process_info_lock_reschedule,
process_info_lock_reschedule2,
- process_info_lock_reschedule3, process_status_exiting,
+ process_info_lock_reschedule3,
+ process_info_garbage_collection,
+ process_status_exiting,
bump_reductions, low_prio, yield, yield2, otp_4725,
bad_register, garbage_collect, process_info_messages,
process_flag_badarg, process_flag_heap_size,
@@ -932,6 +935,48 @@ start_spawner() ->
stop_spawner() ->
ok.
+%% Tests erlang:process_info(Pid, garbage_collection_info)
+process_info_garbage_collection(_Config) ->
+ Parent = self(),
+ Pid = spawn_link(
+ fun() ->
+ receive go -> ok end,
+ (fun F(0) ->
+ Parent ! deep,
+ receive ok -> ok end,
+ [];
+ F(N) ->
+ timer:sleep(1),
+ [lists:seq(1,100) | F(N-1)]
+ end)(1000),
+ Parent ! shallow,
+ receive done -> ok end
+ end),
+ {garbage_collection_info, Before} =
+ erlang:process_info(Pid, garbage_collection_info),
+ Pid ! go, receive deep -> ok end,
+ {_, Deep} = erlang:process_info(Pid, garbage_collection_info),
+ Pid ! ok, receive shallow -> ok end,
+ {_, After} = erlang:process_info(Pid, garbage_collection_info),
+ Pid ! done,
+
+ %% Do some general checks to see if everything seems to be roughly correct
+ ct:log("Before: ~p",[Before]),
+ ct:log("Deep: ~p",[Deep]),
+ ct:log("After: ~p",[After]),
+
+ %% Check stack_size
+ true = proplists:get_value(stack_size, Before) < proplists:get_value(stack_size, Deep),
+ true = proplists:get_value(stack_size, After) < proplists:get_value(stack_size, Deep),
+
+ %% Check used heap size
+ true = proplists:get_value(heap_size, Before) + proplists:get_value(old_heap_size, Before)
+ < proplists:get_value(heap_size, Deep) + proplists:get_value(old_heap_size, Deep),
+ true = proplists:get_value(heap_size, Before) + proplists:get_value(old_heap_size, Before)
+ < proplists:get_value(heap_size, After) + proplists:get_value(old_heap_size, After),
+
+ ok.
+
%% Tests erlang:bump_reductions/1.
bump_reductions(Config) when is_list(Config) ->
erlang:garbage_collect(),
diff --git a/erts/preloaded/src/erlang.erl b/erts/preloaded/src/erlang.erl
index 40d5aedd24..a9b1714f86 100644
--- a/erts/preloaded/src/erlang.erl
+++ b/erts/preloaded/src/erlang.erl
@@ -2051,6 +2051,7 @@ process_flag(_Flag, _Value) ->
dictionary |
error_handler |
garbage_collection |
+ garbage_collection_info |
group_leader |
heap_size |
initial_call |
@@ -2091,6 +2092,7 @@ process_flag(_Flag, _Value) ->
{dictionary, Dictionary :: [{Key :: term(), Value :: term()}]} |
{error_handler, Module :: module()} |
{garbage_collection, GCInfo :: [{atom(),non_neg_integer()}]} |
+ {garbage_collection_info, GCInfo :: [{atom(),non_neg_integer()}]} |
{group_leader, GroupLeader :: pid()} |
{heap_size, Size :: non_neg_integer()} |
{initial_call, mfa()} |
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-11 08:47:02 +0000