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-rw-r--r--erts/doc/src/erlang.xml14
-rw-r--r--erts/emulator/beam/erl_alloc.c79
-rw-r--r--erts/emulator/test/alloc_SUITE.erl4
3 files changed, 72 insertions, 25 deletions
diff --git a/erts/doc/src/erlang.xml b/erts/doc/src/erlang.xml
index 423ccdf98f..ee34f28b90 100644
--- a/erts/doc/src/erlang.xml
+++ b/erts/doc/src/erlang.xml
@@ -6839,11 +6839,7 @@ ok
As from <c>ERTS</c> 5.6.1, the return value is a list
of <c>{instance, InstanceNo, InstanceInfo}</c> tuples,
where <c>InstanceInfo</c> contains information about
- a specific instance of the allocator. As from
- <c>ERTS</c> 5.10.4, the returned list when calling
- <c>erlang:system_info({allocator, mseg_alloc})</c> also
- includes an <c>{erts_mmap, _}</c> tuple as one element
- in the list. If <c><anno>Alloc</anno></c> is not a
+ a specific instance of the allocator. If <c><anno>Alloc</anno></c> is not a
recognized allocator, <c>undefined</c> is returned.
If <c><anno>Alloc</anno></c> is disabled,
<c>false</c> is returned.</p>
@@ -6855,7 +6851,13 @@ ok
briefly documented.</p>
<p>The recognized allocators are listed in
<seealso marker="erts:erts_alloc">erts_alloc(3)</seealso>.
- After reading the <c>erts_alloc(3)</c> documentation,
+ Information about super carriers can be obtained from
+ <c>ERTS</c> 8.0 with <c>{allocator, erts_mmap}</c> or from
+ <c>ERTS</c> 5.10.4, the returned list when calling with
+ <c>{allocator, mseg_alloc}</c> also includes an
+ <c>{erts_mmap, _}</c> tuple as one element in the list.</p>
+
+ <p>After reading the <c>erts_alloc(3)</c> documentation,
the returned information
more or less speaks for itself, but it can be worth
explaining some things. Call counts are presented by two
diff --git a/erts/emulator/beam/erl_alloc.c b/erts/emulator/beam/erl_alloc.c
index d04977b9ae..5b76f34165 100644
--- a/erts/emulator/beam/erl_alloc.c
+++ b/erts/emulator/beam/erl_alloc.c
@@ -137,6 +137,11 @@ static ErtsAllocatorState_t exec_alloc_state;
#endif
static ErtsAllocatorState_t test_alloc_state;
+#define ERTS_ALC_INFO_A_ALLOC_UTIL (ERTS_ALC_A_MAX + 1)
+#define ERTS_ALC_INFO_A_MSEG_ALLOC (ERTS_ALC_A_MAX + 2)
+#define ERTS_ALC_INFO_A_ERTS_MMAP (ERTS_ALC_A_MAX + 3)
+#define ERTS_ALC_INFO_A_MAX ERTS_ALC_INFO_A_ERTS_MMAP
+
typedef struct {
erts_smp_atomic32_t refc;
int only_sz;
@@ -145,13 +150,9 @@ typedef struct {
Process *proc;
Eterm ref;
Eterm ref_heap[REF_THING_SIZE];
- int allocs[ERTS_ALC_A_MAX-ERTS_ALC_A_MIN+1+2];
+ int allocs[ERTS_ALC_INFO_A_MAX - ERTS_ALC_A_MIN + 1 + 1];
} ErtsAllocInfoReq;
-#define ERTS_ALC_INFO_A_ALLOC_UTIL (ERTS_ALC_A_MAX + 1)
-#define ERTS_ALC_INFO_A_MSEG_ALLOC (ERTS_ALC_A_MAX + 2)
-#define ERTS_ALC_INFO_A_MAX ERTS_ALC_INFO_A_MSEG_ALLOC
-
ERTS_SCHED_PREF_QUICK_ALLOC_IMPL(aireq,
ErtsAllocInfoReq,
5,
@@ -2842,8 +2843,16 @@ erts_allocator_info(int to, void *arg)
erts_print(to, arg, "=allocator:mseg_alloc[%d]\n", i);
erts_mseg_info(i, &to, arg, 0, NULL, NULL);
}
- erts_print(to, arg, "=allocator:mseg_alloc.erts_mmap\n");
+ erts_print(to, arg, "=allocator:erts_mmap.default_mmap\n");
erts_mmap_info(&erts_dflt_mmapper, &to, arg, NULL, NULL, &emis);
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+ erts_print(to, arg, "=allocator:erts_mmap.literal_mmap\n");
+ erts_mmap_info(&erts_literal_mmapper, &to, arg, NULL, NULL, &emis);
+#endif
+#ifdef ERTS_ALC_A_EXEC
+ erts_print(to, arg, "=allocator:erts_mmap.exec_mmap\n");
+ erts_mmap_info(&erts_exec_mmapper, &to, arg, NULL, NULL, &emis);
+#endif
}
#endif
@@ -3075,7 +3084,13 @@ reply_alloc_info(void *vair)
Uint sz, *szp;
ErlOffHeap *ohp = NULL;
ErtsMessage *mp = NULL;
- struct erts_mmap_info_struct emis;
+ struct erts_mmap_info_struct mmap_info_dflt;
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+ struct erts_mmap_info_struct mmap_info_literal;
+#endif
+#ifdef ERTS_ALC_A_EXEC
+ struct erts_mmap_info_struct mmap_info_exec;
+#endif
int i;
Eterm (*info_func)(Allctr_t *,
int,
@@ -3181,6 +3196,39 @@ reply_alloc_info(void *vair)
make_small(0),
ainfo);
break;
+ case ERTS_ALC_INFO_A_ERTS_MMAP:
+ alloc_atom = erts_bld_atom(hpp, szp, "erts_mmap");
+
+ ainfo = (air->only_sz ? NIL :
+ erts_mmap_info(&erts_dflt_mmapper, NULL, NULL,
+ hpp, szp, &mmap_info_dflt));
+ ainfo = erts_bld_tuple3(hpp, szp,
+ alloc_atom,
+ erts_bld_atom(hpp,szp,"default_mmap"),
+ ainfo);
+#if defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
+ ai_list = erts_bld_cons(hpp, szp,
+ ainfo, ai_list);
+ ainfo = (air->only_sz ? NIL :
+ erts_mmap_info(&erts_literal_mmapper, NULL, NULL,
+ hpp, szp, &mmap_info_literal));
+ ainfo = erts_bld_tuple3(hpp, szp,
+ alloc_atom,
+ erts_bld_atom(hpp,szp,"literal_mmap"),
+ ainfo);
+#endif
+#ifdef ERTS_ALC_A_EXEC
+ ai_list = erts_bld_cons(hpp, szp,
+ ainfo, ai_list);
+ ainfo = (air->only_sz ? NIL :
+ erts_mmap_info(&erts_exec_mmapper, NULL, NULL,
+ hpp, szp, &mmap_info_exec));
+ ainfo = erts_bld_tuple3(hpp, szp,
+ alloc_atom,
+ erts_bld_atom(hpp,szp,"exec_mmap"),
+ ainfo);
+#endif
+ break;
case ERTS_ALC_INFO_A_MSEG_ALLOC:
alloc_atom = erts_bld_atom(hpp, szp, "mseg_alloc");
#if HAVE_ERTS_MSEG
@@ -3193,14 +3241,6 @@ reply_alloc_info(void *vair)
make_small(0),
ainfo);
- ai_list = erts_bld_cons(hpp, szp,
- ainfo, ai_list);
- ainfo = (air->only_sz ? NIL :
- erts_mmap_info(&erts_dflt_mmapper, NULL, NULL, hpp, szp, &emis));
- ainfo = erts_bld_tuple3(hpp, szp,
- alloc_atom,
- erts_bld_atom(hpp,szp,"erts_mmap"),
- ainfo);
#else
ainfo = erts_bld_tuple2(hpp, szp, alloc_atom,
am_false);
@@ -3232,7 +3272,8 @@ reply_alloc_info(void *vair)
}
switch (ai) {
case ERTS_ALC_A_SYSTEM:
- case ERTS_ALC_INFO_A_ALLOC_UTIL:
+ case ERTS_ALC_INFO_A_ALLOC_UTIL:
+ case ERTS_ALC_INFO_A_ERTS_MMAP:
break;
case ERTS_ALC_INFO_A_MSEG_ALLOC:
#if HAVE_ERTS_MSEG && defined(ERTS_SMP)
@@ -3306,7 +3347,7 @@ erts_request_alloc_info(struct process *c_p,
int internal)
{
ErtsAllocInfoReq *air = aireq_alloc();
- Eterm req_ai[ERTS_ALC_A_MAX+1+2] = {0};
+ Eterm req_ai[ERTS_ALC_INFO_A_MAX+1] = {0};
Eterm alist;
Eterm *hp;
int airix = 0, ai;
@@ -3342,6 +3383,10 @@ erts_request_alloc_info(struct process *c_p,
ai = ERTS_ALC_INFO_A_MSEG_ALLOC;
goto save_alloc;
}
+ if (erts_is_atom_str("erts_mmap", alloc, 0)) {
+ ai = ERTS_ALC_INFO_A_ERTS_MMAP;
+ goto save_alloc;
+ }
if (erts_is_atom_str("alloc_util", alloc, 0)) {
ai = ERTS_ALC_INFO_A_ALLOC_UTIL;
save_alloc:
diff --git a/erts/emulator/test/alloc_SUITE.erl b/erts/emulator/test/alloc_SUITE.erl
index 5fb560d1ec..1f7b499dcb 100644
--- a/erts/emulator/test/alloc_SUITE.erl
+++ b/erts/emulator/test/alloc_SUITE.erl
@@ -102,8 +102,8 @@ erts_mmap_do(Config, SCO, SCRPM, SCRFSD) ->
Self = self(),
Ref = make_ref(),
F = fun() ->
- SI = erlang:system_info({allocator,mseg_alloc}),
- {erts_mmap,EM} = lists:keyfind(erts_mmap, 1, SI),
+ SI = erlang:system_info({allocator,erts_mmap}),
+ {default_mmap,EM} = lists:keyfind(default_mmap, 1, SI),
{supercarrier,SC} = lists:keyfind(supercarrier, 1, EM),
{sizes,Sizes} = lists:keyfind(sizes, 1, SC),
{free_segs,Segs} = lists:keyfind(free_segs,1,SC),
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 02:38:36 +0000