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-rw-r--r--erts/emulator/beam/beam_load.c90
-rw-r--r--erts/emulator/beam/global.h2
-rw-r--r--erts/emulator/test/exception_SUITE.erl22
3 files changed, 103 insertions, 11 deletions
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index d7612013f6..e15362bc1c 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -552,6 +552,8 @@ static Eterm native_addresses(Process* p, Eterm mod);
int patch_funentries(Eterm Patchlist);
int patch(Eterm Addresses, Uint fe);
static int safe_mul(UWord a, UWord b, UWord* resp);
+static void lookup_loc(FunctionInfo* fi, BeamInstr* pc,
+ BeamInstr* modp, int idx);
static int must_swap_floats;
@@ -5141,6 +5143,7 @@ erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
fi->current = NULL;
fi->needed = 5;
+ fi->loc = LINE_INVALID_LOCATION;
while (low < high) {
if (pc < mid->start) {
high = mid;
@@ -5158,6 +5161,12 @@ erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
} else if (pc < mid1[1]) {
mid_module = mid;
fi->current = mid1[0]+2;
+ if (full_info) {
+ BeamInstr** fp = (BeamInstr **) (mid->start +
+ MI_FUNCTIONS);
+ int idx = mid1 - fp;
+ lookup_loc(fi, pc, mid->start, idx);
+ }
return;
} else {
low1 = mid1 + 1;
@@ -5169,6 +5178,61 @@ erts_lookup_function_info(FunctionInfo* fi, BeamInstr* pc, int full_info)
}
}
+static void
+lookup_loc(FunctionInfo* fi, BeamInstr* orig_pc, BeamInstr* modp, int idx)
+{
+ Eterm* line = (Eterm *) modp[MI_LINE_TABLE];
+ Eterm* low;
+ Eterm* high;
+ Eterm* mid;
+ Eterm pc;
+
+ if (line == 0) {
+ return;
+ }
+
+ pc = (Eterm) (BeamInstr) orig_pc;
+ fi->fname_ptr = (Eterm *) (BeamInstr) line[MI_LINE_FNAME_PTR];
+ low = (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB+idx];
+ high = (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB+idx+1];
+ while (high > low) {
+ mid = low + (high-low) / 2;
+ if (pc < mid[0]) {
+ high = mid;
+ } else if (pc < mid[1]) {
+ int file;
+ int index = mid - (Eterm *) (BeamInstr) line[MI_LINE_FUNC_TAB];
+
+ if (line[MI_LINE_LOC_SIZE] == 2) {
+ Uint16* loc_table =
+ (Uint16 *) (BeamInstr) line[MI_LINE_LOC_TAB];
+ fi->loc = loc_table[index];
+ } else {
+ Uint32* loc_table =
+ (Uint32 *) (BeamInstr) line[MI_LINE_LOC_TAB];
+ ASSERT(line[MI_LINE_LOC_SIZE] == 4);
+ fi->loc = loc_table[index];
+ }
+ if (fi->loc == LINE_INVALID_LOCATION) {
+ return;
+ }
+ fi->needed += 3+2+3+2;
+ file = LOC_FILE(fi->loc);
+ if (file == 0) {
+ /* Special case: Module name with ".erl" appended */
+ Atom* mod_atom = atom_tab(atom_val(fi->current[0]));
+ fi->needed += 2*(mod_atom->len+4);
+ } else {
+ Atom* ap = atom_tab(atom_val((fi->fname_ptr)[file-1]));
+ fi->needed += 2*ap->len;
+ }
+ return;
+ } else {
+ low = mid + 1;
+ }
+ }
+}
+
/*
* Build a single {M,F,A,Loction} item to be part of
* a stack trace.
@@ -5179,6 +5243,31 @@ erts_build_mfa_item(FunctionInfo* fi, Eterm* hp, Eterm args, Eterm* mfa_p)
BeamInstr* current = fi->current;
Eterm loc = NIL;
+ if (fi->loc != LINE_INVALID_LOCATION) {
+ Eterm tuple;
+ int line = LOC_LINE(fi->loc);
+ int file = LOC_FILE(fi->loc);
+ Eterm file_term = NIL;
+
+ if (file == 0) {
+ Atom* ap = atom_tab(atom_val(fi->current[0]));
+ file_term = buf_to_intlist(&hp, ".erl", 4, NIL);
+ file_term = buf_to_intlist(&hp, (char*)ap->name, ap->len, file_term);
+ } else {
+ Atom* ap = atom_tab(atom_val((fi->fname_ptr)[file-1]));
+ file_term = buf_to_intlist(&hp, (char*)ap->name, ap->len, NIL);
+ }
+
+ tuple = TUPLE2(hp, am_line, make_small(line));
+ hp += 3;
+ loc = CONS(hp, tuple, loc);
+ hp += 2;
+ tuple = TUPLE2(hp, am_file, file_term);
+ hp += 3;
+ loc = CONS(hp, tuple, loc);
+ hp += 2;
+ }
+
if (is_list(args) || is_nil(args)) {
*mfa_p = TUPLE4(hp, current[0], current[1], args, loc);
} else {
@@ -5198,6 +5287,7 @@ erts_set_current_function(FunctionInfo* fi, BeamInstr* current)
{
fi->current = current;
fi->needed = 5;
+ fi->loc = LINE_INVALID_LOCATION;
}
diff --git a/erts/emulator/beam/global.h b/erts/emulator/beam/global.h
index ab675ad4a1..5b36f13149 100644
--- a/erts/emulator/beam/global.h
+++ b/erts/emulator/beam/global.h
@@ -862,6 +862,8 @@ void erts_system_profile_clear(Process *c_p);
typedef struct {
BeamInstr* current; /* Pointer to: Mod, Name, Arity */
Uint needed; /* Heap space needed for entire tuple */
+ Uint32 loc; /* Location in source code */
+ Eterm* fname_ptr; /* Pointer to fname table */
} FunctionInfo;
int erts_load_module(Process *c_p, ErtsProcLocks c_p_locks,
diff --git a/erts/emulator/test/exception_SUITE.erl b/erts/emulator/test/exception_SUITE.erl
index 63aa1c94f5..dda4c5bc26 100644
--- a/erts/emulator/test/exception_SUITE.erl
+++ b/erts/emulator/test/exception_SUITE.erl
@@ -372,10 +372,10 @@ raise(Conf) when is_list(Conf) ->
%%
N = 8, % Must be even
?line N = erlang:system_flag(backtrace_depth, N),
+ ?line B = odd_even(N, []),
?line try even(N)
catch error:function_clause -> ok
end,
- ?line B = odd_even(N, []),
?line B = erlang:get_stacktrace(),
%%
?line C0 = odd_even(N+1, []),
@@ -393,19 +393,12 @@ raise(Conf) when is_list(Conf) ->
odd_even(N, R) when is_integer(N), N > 1 ->
odd_even(N-1,
[if (N rem 2) == 0 ->
- {?MODULE,even,1,[]};
+ {?MODULE,even,1,[{file,"odd_even.erl"},{line,3}]};
true ->
- {?MODULE,odd,1,[]}
+ {?MODULE,odd,1,[{file,"odd_even.erl"},{line,6}]}
end|R]);
odd_even(1, R) ->
- [{?MODULE,odd,[1],[]}|R].
-
-even(N) when is_integer(N), N > 1, (N rem 2) == 0 ->
- odd(N-1)++[N].
-
-odd(N) when is_integer(N), N > 1, (N rem 2) == 1 ->
- even(N-1)++[N].
-
+ [{?MODULE,odd,[1],[{file,"odd_even.erl"},{line,5}]}|R].
foo({value,Value}) -> Value;
foo({'div',{A,B}}) ->
@@ -533,3 +526,10 @@ do_exception_with_heap_frag(Bin, [Sz|Sizes]) ->
do_exception_with_heap_frag(_, []) -> ok.
id(I) -> I.
+
+-file("odd_even.erl", 1). %Line 1
+even(N) when is_integer(N), N > 1, (N rem 2) == 0 ->
+ odd(N-1)++[N]. %Line 3
+
+odd(N) when is_integer(N), N > 1, (N rem 2) == 1 ->
+ even(N-1)++[N]. %Line 6
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-12 12:55:32 +0000