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-rw-r--r--erts/emulator/beam/beam_ranges.c22
-rw-r--r--erts/emulator/beam/break.c51
-rw-r--r--erts/emulator/beam/erl_alloc.types1
-rw-r--r--erts/emulator/beam/erl_process_dump.c363
-rw-r--r--erts/emulator/beam/global.h2
-rw-r--r--erts/emulator/beam/module.c1
6 files changed, 423 insertions, 17 deletions
diff --git a/erts/emulator/beam/beam_ranges.c b/erts/emulator/beam/beam_ranges.c
index 6e373a3480..01bda7f3c1 100644
--- a/erts/emulator/beam/beam_ranges.c
+++ b/erts/emulator/beam/beam_ranges.c
@@ -32,6 +32,15 @@ typedef struct {
erts_atomic_t end; /* (BeamInstr*) Points one word beyond last function in module. */
} Range;
+/*
+ * Used for crash dumping of literals. The size of erts_dump_lit_areas is
+ * always twice the number of active ranges (to allow for literals in both
+ * current and old code).
+ */
+
+ErtsLiteralArea** erts_dump_lit_areas;
+Uint erts_dump_num_lit_areas;
+
/* Range 'end' needs to be atomic as we purge module
by setting end=start in active code_ix */
#define RANGE_END(R) ((BeamInstr*)erts_atomic_read_nob(&(R)->end))
@@ -97,6 +106,11 @@ erts_init_ranges(void)
r[i].allocated = 0;
erts_atomic_init_nob(&r[i].mid, 0);
}
+
+ erts_dump_num_lit_areas = 8;
+ erts_dump_lit_areas = (ErtsLiteralArea **)
+ erts_alloc(ERTS_ALC_T_CRASH_DUMP,
+ erts_dump_num_lit_areas * sizeof(ErtsLiteralArea*));
}
void
@@ -164,6 +178,14 @@ erts_end_staging_ranges(int commit)
erts_atomic_set_nob(&r[dst].mid,
(erts_aint_t) (r[dst].modules +
r[dst].n / 2));
+
+ if (r[dst].allocated * 2 > erts_dump_num_lit_areas) {
+ erts_dump_num_lit_areas *= 2;
+ erts_dump_lit_areas = (ErtsLiteralArea **)
+ erts_realloc(ERTS_ALC_T_CRASH_DUMP,
+ (void *) erts_dump_lit_areas,
+ erts_dump_num_lit_areas * sizeof(ErtsLiteralArea*));
+ }
}
}
diff --git a/erts/emulator/beam/break.c b/erts/emulator/beam/break.c
index 35b2365655..d9ee940662 100644
--- a/erts/emulator/beam/break.c
+++ b/erts/emulator/beam/break.c
@@ -58,6 +58,8 @@ static void dump_attributes(fmtfn_t to, void *to_arg, byte* ptr, int size);
extern char* erts_system_version[];
+#define WRITE_BUFFER_SIZE (64*1024)
+
static void
port_info(fmtfn_t to, void *to_arg)
{
@@ -673,18 +675,28 @@ bin_check(void)
static Sint64 crash_dump_limit = ERTS_SINT64_MAX;
static Sint64 crash_dump_written = 0;
-static int crash_dump_limited_writer(void* vfdp, char* buf, size_t len)
+typedef struct LimitedWriterInfo_ {
+ fmtfn_t to;
+ void* to_arg;
+} LimitedWriterInfo;
+
+static int
+crash_dump_limited_writer(void* vfdp, char* buf, size_t len)
{
const char stop_msg[] = "\n=abort:CRASH DUMP SIZE LIMIT REACHED\n";
+ LimitedWriterInfo* lwi = (LimitedWriterInfo *) vfdp;
crash_dump_written += len;
if (crash_dump_written <= crash_dump_limit) {
- return erts_write_fd(vfdp, buf, len);
+ return lwi->to(lwi->to_arg, buf, len);
}
len -= (crash_dump_written - crash_dump_limit);
- erts_write_fd(vfdp, buf, len);
- erts_write_fd(vfdp, (char*)stop_msg, sizeof(stop_msg)-1);
+ lwi->to(lwi->to_arg, buf, len);
+ lwi->to(lwi->to_arg, (char*)stop_msg, sizeof(stop_msg)-1);
+ if (lwi->to == &erts_write_fp) {
+ fclose((FILE *) lwi->to_arg);
+ }
/* We assume that crash dump was called from erts_exit_vv() */
erts_exit_epilogue();
@@ -707,6 +719,9 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
int i;
fmtfn_t to = &erts_write_fd;
void* to_arg;
+ FILE* fp = 0;
+ LimitedWriterInfo lwi;
+ static char* write_buffer; /* 'static' to avoid a leak warning in valgrind */
if (ERTS_SOMEONE_IS_CRASH_DUMPING)
return;
@@ -810,9 +825,30 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
fd = open(dumpname,O_WRONLY | O_CREAT | O_TRUNC,0640);
if (fd < 0)
return; /* Can't create the crash dump, skip it */
- to_arg = (void*)&fd;
+
+ /*
+ * Wrap into a FILE* so that we can use buffered output. Set an
+ * explicit buffer to make sure the first write does not fail because
+ * of a failure to allocate a buffer.
+ */
+ write_buffer = (char *) erts_alloc_fnf(ERTS_ALC_T_TMP, WRITE_BUFFER_SIZE);
+ if (write_buffer && (fp = fdopen(fd, "w")) != NULL) {
+ setvbuf(fp, write_buffer, _IOFBF, WRITE_BUFFER_SIZE);
+ lwi.to = &erts_write_fp;
+ lwi.to_arg = (void*)fp;
+ } else {
+ lwi.to = &erts_write_fd;
+ lwi.to_arg = (void*)&fd;
+ }
+ if (to == &crash_dump_limited_writer) {
+ to_arg = (void *) &lwi;
+ } else {
+ to = lwi.to;
+ to_arg = lwi.to_arg;
+ }
+
time(&now);
- erts_cbprintf(to, to_arg, "=erl_crash_dump:0.3\n%s", ctime(&now));
+ erts_cbprintf(to, to_arg, "=erl_crash_dump:0.4\n%s", ctime(&now));
if (file != NULL)
erts_cbprintf(to, to_arg, "The error occurred in file %s, line %d\n", file, line);
@@ -916,6 +952,9 @@ erl_crash_dump_v(char *file, int line, char* fmt, va_list args)
}
erts_cbprintf(to, to_arg, "=end\n");
+ if (fp) {
+ fclose(fp);
+ }
close(fd);
erts_fprintf(stderr,"done\n");
}
diff --git a/erts/emulator/beam/erl_alloc.types b/erts/emulator/beam/erl_alloc.types
index 878b971b07..2960272eab 100644
--- a/erts/emulator/beam/erl_alloc.types
+++ b/erts/emulator/beam/erl_alloc.types
@@ -260,6 +260,7 @@ type MREF_TAB LONG_LIVED SYSTEM magic_ref_table
type MINDIRECTION FIXED_SIZE SYSTEM magic_indirection
type BINARY_FIND SHORT_LIVED PROCESSES binary_find
type OPEN_PORT_ENV TEMPORARY SYSTEM open_port_env
+type CRASH_DUMP STANDARD SYSTEM crash_dump
type THR_Q_EL STANDARD SYSTEM thr_q_element
type THR_Q_EL_SL FIXED_SIZE SYSTEM sl_thr_q_element
diff --git a/erts/emulator/beam/erl_process_dump.c b/erts/emulator/beam/erl_process_dump.c
index 5a2c262ff1..12ef4aab8a 100644
--- a/erts/emulator/beam/erl_process_dump.c
+++ b/erts/emulator/beam/erl_process_dump.c
@@ -32,6 +32,7 @@
#include "dist.h"
#include "beam_catches.h"
#include "erl_binary.h"
+#include "erl_map.h"
#define ERTS_WANT_EXTERNAL_TAGS
#include "external.h"
@@ -51,6 +52,11 @@ static void print_function_from_pc(fmtfn_t to, void *to_arg, BeamInstr* x);
static void heap_dump(fmtfn_t to, void *to_arg, Eterm x);
static void dump_binaries(fmtfn_t to, void *to_arg, Binary* root);
static void dump_externally(fmtfn_t to, void *to_arg, Eterm term);
+static void mark_literal(Eterm* ptr);
+static void init_literal_areas(void);
+static void dump_literals(fmtfn_t to, void *to_arg);
+static void dump_module_literals(fmtfn_t to, void *to_arg,
+ ErtsLiteralArea* lit_area);
static Binary* all_binaries;
@@ -58,14 +64,14 @@ extern BeamInstr beam_apply[];
extern BeamInstr beam_exit[];
extern BeamInstr beam_continue_exit[];
-
void
erts_deep_process_dump(fmtfn_t to, void *to_arg)
{
int i, max = erts_ptab_max(&erts_proc);
all_binaries = NULL;
-
+ init_literal_areas();
+
for (i = 0; i < max; i++) {
Process *p = erts_pix2proc(i);
if (p && p->i != ENULL) {
@@ -75,6 +81,7 @@ erts_deep_process_dump(fmtfn_t to, void *to_arg)
}
}
+ dump_literals(to, to_arg);
dump_binaries(to, to_arg, all_binaries);
}
@@ -373,7 +380,9 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
next = (Eterm *) x;
} else if (is_list(x)) {
ptr = list_val(x);
- if (ptr[0] != OUR_NIL) {
+ if (erts_is_literal(x, ptr)) {
+ mark_literal(ptr);
+ } else if (ptr[0] != OUR_NIL) {
erts_print(to, to_arg, PTR_FMT ":l", ptr);
dump_element(to, to_arg, ptr[0]);
erts_putc(to, to_arg, '|');
@@ -392,7 +401,9 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
ptr = boxed_val(x);
hdr = *ptr;
- if (hdr != OUR_NIL) { /* If not visited */
+ if (erts_is_literal(x, ptr)) {
+ mark_literal(ptr);
+ } else if (hdr != OUR_NIL) {
erts_print(to, to_arg, PTR_FMT ":", ptr);
if (is_arity_value(hdr)) {
Uint i;
@@ -498,11 +509,77 @@ heap_dump(fmtfn_t to, void *to_arg, Eterm x)
erts_print(to, to_arg, "p<%beu.%beu>\n",
port_channel_no(x), port_number(x));
*ptr = OUR_NIL;
+ } else if (is_map_header(hdr)) {
+ if (is_flatmap_header(hdr)) {
+ flatmap_t* fmp = (flatmap_t *) flatmap_val(x);
+ Eterm* values = ptr + sizeof(flatmap_t) / sizeof(Eterm);
+ Uint map_size = fmp->size;
+ int i;
+
+ erts_print(to, to_arg, "Mf" ETERM_FMT ":", map_size);
+ dump_element(to, to_arg, fmp->keys);
+ erts_putc(to, to_arg, ':');
+ for (i = 0; i < map_size; i++) {
+ dump_element(to, to_arg, values[i]);
+ if (is_immed(values[i])) {
+ values[i] = make_small(0);
+ }
+ if (i < map_size-1) {
+ erts_putc(to, to_arg, ',');
+ }
+ }
+ erts_putc(to, to_arg, '\n');
+ *ptr = OUR_NIL;
+ x = fmp->keys;
+ if (map_size) {
+ fmp->keys = (Eterm) next;
+ next = &values[map_size-1];
+ }
+ continue;
+ } else {
+ Uint i;
+ Uint sz = 0;
+ Eterm* nodes = ptr + 1;
+
+ switch (MAP_HEADER_TYPE(hdr)) {
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY:
+ nodes++;
+ sz = 16;
+ erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+ hashmap_size(x), sz);
+ break;
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP:
+ nodes++;
+ sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+ erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+ hashmap_size(x), sz);
+ break;
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP:
+ sz = hashmap_bitcount(MAP_HEADER_VAL(hdr));
+ erts_print(to, to_arg, "Mn" ETERM_FMT ":", sz);
+ break;
+ }
+ *ptr = OUR_NIL;
+ for (i = 0; i < sz; i++) {
+ dump_element(to, to_arg, nodes[i]);
+ if (is_immed(nodes[i])) {
+ nodes[i] = make_small(0);
+ }
+ if (i < sz-1) {
+ erts_putc(to, to_arg, ',');
+ }
+ }
+ erts_putc(to, to_arg, '\n');
+ x = nodes[0];
+ nodes[0] = (Eterm) next;
+ next = &nodes[sz-1];
+ continue;
+ }
} else {
/*
* All other we dump in the external term format.
*/
- dump_externally(to, to_arg, x);
+ dump_externally(to, to_arg, x);
erts_putc(to, to_arg, '\n');
*ptr = OUR_NIL;
}
@@ -564,11 +641,6 @@ dump_externally(fmtfn_t to, void *to_arg, Eterm term)
}
}
- /* Do not handle maps */
- if (is_map(term)) {
- term = am_undefined;
- }
-
s = p = sbuf;
erts_encode_ext(term, &p);
erts_print(to, to_arg, "E%X:", p-s);
@@ -577,6 +649,277 @@ dump_externally(fmtfn_t to, void *to_arg, Eterm term)
}
}
+/*
+ * Handle dumping of literal areas.
+ */
+
+static ErtsLiteralArea** lit_areas;
+static Uint num_lit_areas;
+
+static int compare_areas(const void * a, const void * b)
+{
+ ErtsLiteralArea** a_p = (ErtsLiteralArea **) a;
+ ErtsLiteralArea** b_p = (ErtsLiteralArea **) b;
+
+ if (*a_p < *b_p) {
+ return -1;
+ } else if (*b_p < *a_p) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+
+static void
+init_literal_areas(void)
+{
+ int i;
+ Module* modp;
+ ErtsCodeIndex code_ix;
+ ErtsLiteralArea** area_p;
+
+ code_ix = erts_active_code_ix();
+ erts_rlock_old_code(code_ix);
+
+ lit_areas = area_p = erts_dump_lit_areas;
+ num_lit_areas = 0;
+ for (i = 0; i < module_code_size(code_ix); i++) {
+ modp = module_code(i, code_ix);
+ if (modp == NULL) {
+ continue;
+ }
+ if (modp->curr.code_length > 0 &&
+ modp->curr.code_hdr->literal_area) {
+ *area_p++ = modp->curr.code_hdr->literal_area;
+ }
+ if (modp->old.code_length > 0 && modp->old.code_hdr->literal_area) {
+ *area_p++ = modp->old.code_hdr->literal_area;
+ }
+ }
+
+ num_lit_areas = area_p - lit_areas;
+ ASSERT(num_lit_areas <= erts_dump_num_lit_areas);
+ for (i = 0; i < num_lit_areas; i++) {
+ lit_areas[i]->off_heap = 0;
+ }
+
+ qsort(lit_areas, num_lit_areas, sizeof(ErtsLiteralArea *),
+ compare_areas);
+
+ erts_runlock_old_code(code_ix);
+}
+
+static int search_areas(const void * a, const void * b) {
+ Eterm* key = (Eterm *) a;
+ ErtsLiteralArea** b_p = (ErtsLiteralArea **) b;
+ if (key < b_p[0]->start) {
+ return -1;
+ } else if (b_p[0]->end <= key) {
+ return 1;
+ } else {
+ return 0;
+ }
+}
+
+static void mark_literal(Eterm* ptr)
+{
+ ErtsLiteralArea** ap;
+
+ ap = bsearch(ptr, lit_areas, num_lit_areas, sizeof(ErtsLiteralArea*),
+ search_areas);
+ ASSERT(ap);
+ ap[0]->off_heap = (struct erl_off_heap_header *) 1;
+}
+
+
+static void
+dump_literals(fmtfn_t to, void *to_arg)
+{
+ ErtsCodeIndex code_ix;
+ int i;
+
+ code_ix = erts_active_code_ix();
+ erts_rlock_old_code(code_ix);
+
+ erts_print(to, to_arg, "=literals\n");
+ for (i = 0; i < num_lit_areas; i++) {
+ if (lit_areas[i]->off_heap) {
+ dump_module_literals(to, to_arg, lit_areas[i]);
+ }
+ }
+
+ erts_runlock_old_code(code_ix);
+}
+
+static void
+dump_module_literals(fmtfn_t to, void *to_arg, ErtsLiteralArea* lit_area)
+{
+ Eterm* htop;
+ Eterm* hend;
+
+ htop = lit_area->start;
+ hend = lit_area->end;
+ while (htop < hend) {
+ Eterm w = *htop;
+ Eterm term;
+ Uint size;
+
+ switch (primary_tag(w)) {
+ case TAG_PRIMARY_HEADER:
+ term = make_boxed(htop);
+ erts_print(to, to_arg, PTR_FMT ":", htop);
+ if (is_arity_value(w)) {
+ Uint i;
+ Uint arity = arityval(w);
+
+ erts_print(to, to_arg, "t" ETERM_FMT ":", arity);
+ for (i = 1; i <= arity; i++) {
+ dump_element(to, to_arg, htop[i]);
+ if (i < arity) {
+ erts_putc(to, to_arg, ',');
+ }
+ }
+ erts_putc(to, to_arg, '\n');
+ } else if (w == HEADER_FLONUM) {
+ FloatDef f;
+ char sbuf[31];
+ int i;
+
+ GET_DOUBLE_DATA((htop+1), f);
+ i = sys_double_to_chars(f.fd, sbuf, sizeof(sbuf));
+ sys_memset(sbuf+i, 0, 31-i);
+ erts_print(to, to_arg, "F%X:%s\n", i, sbuf);
+ } else if (_is_bignum_header(w)) {
+ erts_print(to, to_arg, "B%T\n", term);
+ } else if (is_binary_header(w)) {
+ Uint tag = thing_subtag(w);
+ Uint size = binary_size(term);
+ Uint i;
+
+ if (tag == HEAP_BINARY_SUBTAG) {
+ byte* p;
+
+ erts_print(to, to_arg, "Yh%X:", size);
+ p = binary_bytes(term);
+ for (i = 0; i < size; i++) {
+ erts_print(to, to_arg, "%02X", p[i]);
+ }
+ } else if (tag == REFC_BINARY_SUBTAG) {
+ ProcBin* pb = (ProcBin *) binary_val(term);
+ Binary* val = pb->val;
+
+ if (erts_atomic_xchg_nob(&val->intern.refc, 0) != 0) {
+ val->intern.flags = (UWord) all_binaries;
+ all_binaries = val;
+ }
+ erts_print(to, to_arg,
+ "Yc" PTR_FMT ":" PTR_FMT ":" PTR_FMT,
+ val,
+ pb->bytes - (byte *)val->orig_bytes,
+ size);
+ } else if (tag == SUB_BINARY_SUBTAG) {
+ ErlSubBin* Sb = (ErlSubBin *) binary_val(term);
+ Eterm* real_bin;
+ void* val;
+
+ real_bin = boxed_val(Sb->orig);
+ if (thing_subtag(*real_bin) == REFC_BINARY_SUBTAG) {
+ /*
+ * Unvisited REFC_BINARY: Point directly to
+ * the binary.
+ */
+ ProcBin* pb = (ProcBin *) real_bin;
+ val = pb->val;
+ } else {
+ /*
+ * Heap binary or visited REFC binary: Point
+ * to heap binary or ProcBin on the heap.
+ */
+ val = real_bin;
+ }
+ erts_print(to, to_arg,
+ "Ys" PTR_FMT ":" PTR_FMT ":" PTR_FMT,
+ val, Sb->offs, size);
+ }
+ erts_putc(to, to_arg, '\n');
+ } else if (is_map_header(w)) {
+ if (is_flatmap_header(w)) {
+ flatmap_t* fmp = (flatmap_t *) flatmap_val(term);
+ Eterm* values = htop + sizeof(flatmap_t) / sizeof(Eterm);
+ Uint map_size = fmp->size;
+ int i;
+
+ erts_print(to, to_arg, "Mf" ETERM_FMT ":", map_size);
+ dump_element(to, to_arg, fmp->keys);
+ erts_putc(to, to_arg, ':');
+ for (i = 0; i < map_size; i++) {
+ dump_element(to, to_arg, values[i]);
+ if (i < map_size-1) {
+ erts_putc(to, to_arg, ',');
+ }
+ }
+ erts_putc(to, to_arg, '\n');
+ } else {
+ Uint i;
+ Uint sz = 0;
+ Eterm* nodes = htop + 1;
+
+ switch (MAP_HEADER_TYPE(w)) {
+ case MAP_HEADER_TAG_HAMT_HEAD_ARRAY:
+ nodes++;
+ sz = 16;
+ erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+ hashmap_size(term), sz);
+ break;
+ case MAP_HEADER_TAG_HAMT_HEAD_BITMAP:
+ nodes++;
+ sz = hashmap_bitcount(MAP_HEADER_VAL(w));
+ erts_print(to, to_arg, "Mh" ETERM_FMT ":" ETERM_FMT ":",
+ hashmap_size(term), sz);
+ break;
+ case MAP_HEADER_TAG_HAMT_NODE_BITMAP:
+ sz = hashmap_bitcount(MAP_HEADER_VAL(w));
+ erts_print(to, to_arg, "Mn" ETERM_FMT ":", sz);
+ break;
+ }
+ for (i = 0; i < sz; i++) {
+ dump_element(to, to_arg, nodes[i]);
+ if (i < sz-1) {
+ erts_putc(to, to_arg, ',');
+ }
+ }
+ erts_putc(to, to_arg, '\n');
+ }
+ }
+ size = 1 + header_arity(w);
+ switch (w & _HEADER_SUBTAG_MASK) {
+ case MAP_SUBTAG:
+ if (is_flatmap_header(w)) {
+ size += 1 + flatmap_get_size(htop);
+ } else {
+ size += hashmap_bitcount(MAP_HEADER_VAL(w));
+ }
+ break;
+ case SUB_BINARY_SUBTAG:
+ size += 1;
+ break;
+ }
+ break;
+ default:
+ ASSERT(!is_header(htop[1]));
+ erts_print(to, to_arg, PTR_FMT ":l", htop);
+ dump_element(to, to_arg, htop[0]);
+ erts_putc(to, to_arg, '|');
+ dump_element(to, to_arg, htop[1]);
+ erts_putc(to, to_arg, '\n');
+ size = 2;
+ break;
+ }
+ htop += size;
+ }
+}
+
void erts_dump_process_state(fmtfn_t to, void *to_arg, erts_aint32_t psflg)
{
char *s;
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index 09aeba00fa..3dd3a60939 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -947,6 +947,8 @@ void erts_update_ranges(BeamInstr* code, Uint size);
void erts_remove_from_ranges(BeamInstr* code);
UWord erts_ranges_sz(void);
void erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info);
+ErtsLiteralArea** erts_dump_lit_areas;
+Uint erts_dump_num_lit_areas;
/* break.c */
void init_break_handler(void);
diff --git a/erts/emulator/beam/module.c b/erts/emulator/beam/module.c
index baeec115ea..1712dc803c 100644
--- a/erts/emulator/beam/module.c
+++ b/erts/emulator/beam/module.c
@@ -254,4 +254,3 @@ void module_end_staging(int commit)
IF_DEBUG(dbg_load_code_ix = -1);
}
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-21 12:00:01 +0000