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-rw-r--r--erts/emulator/beam/beam_bif_load.c63
-rw-r--r--erts/emulator/beam/beam_load.c58
-rw-r--r--erts/emulator/beam/erl_nif.c62
-rw-r--r--lib/kernel/src/code_server.erl1
-rw-r--r--lib/kernel/test/code_SUITE.erl91
5 files changed, 212 insertions, 63 deletions
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index 87508dcf5f..b6f5d66166 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -625,8 +625,8 @@ BIF_RETTYPE call_on_load_function_1(BIF_ALIST_1)
{
Module* modp = erts_get_module(BIF_ARG_1, erts_active_code_ix());
- if (modp && modp->curr.code_hdr) {
- BIF_TRAP_CODE_PTR_0(BIF_P, modp->curr.code_hdr->on_load_function_ptr);
+ if (modp && modp->old.code_hdr) {
+ BIF_TRAP_CODE_PTR_0(BIF_P, modp->old.code_hdr->on_load_function_ptr);
}
else {
BIF_ERROR(BIF_P, BADARG);
@@ -651,14 +651,14 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
code_ix = erts_active_code_ix();
modp = erts_get_module(BIF_ARG_1, code_ix);
- if (!modp || !modp->curr.code_hdr) {
+ if (!modp || !modp->old.code_hdr) {
error:
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
erts_release_code_write_permission();
BIF_ERROR(BIF_P, BADARG);
}
- if (modp->curr.code_hdr->on_load_function_ptr == NULL) {
+ if (modp->old.code_hdr->on_load_function_ptr == NULL) {
goto error;
}
if (BIF_ARG_2 != am_false && BIF_ARG_2 != am_true) {
@@ -667,44 +667,55 @@ BIF_RETTYPE finish_after_on_load_2(BIF_ALIST_2)
if (BIF_ARG_2 == am_true) {
int i;
+ struct erl_module_instance t;
+
+ /*
+ * Swap old and new code.
+ */
+ t = modp->curr;
+ modp->curr = modp->old;
+ modp->old = t;
/*
* The on_load function succeded. Fix up export entries.
*/
for (i = 0; i < export_list_size(code_ix); i++) {
Export *ep = export_list(i,code_ix);
- if (ep != NULL &&
- ep->code[0] == BIF_ARG_1 &&
- ep->code[4] != 0) {
+ if (ep == NULL || ep->code[0] != BIF_ARG_1) {
+ continue;
+ }
+ if (ep->code[4] != 0) {
ep->addressv[code_ix] = (void *) ep->code[4];
ep->code[4] = 0;
+ } else {
+ if (ep->addressv[code_ix] == ep->code+3 &&
+ ep->code[3] == (BeamInstr) em_apply_bif) {
+ continue;
+ }
+ ep->addressv[code_ix] = ep->code+3;
+ ep->code[3] = (BeamInstr) em_call_error_handler;
}
}
modp->curr.code_hdr->on_load_function_ptr = NULL;
set_default_trace_pattern(BIF_ARG_1);
} else if (BIF_ARG_2 == am_false) {
- BeamInstr* code;
- BeamInstr* end;
+ int i;
/*
- * The on_load function failed. Remove the loaded code.
- * This is an combination of delete and purge. We purge
- * the current code; the old code is not touched.
+ * The on_load function failed. Remove references to the
+ * code that is about to be purged from the export entries.
*/
- erts_total_code_size -= modp->curr.code_length;
- code = (BeamInstr*) modp->curr.code_hdr;
- end = (BeamInstr *) ((char *)code + modp->curr.code_length);
- erts_cleanup_funs_on_purge(code, end);
- beam_catches_delmod(modp->curr.catches, code, modp->curr.code_length,
- erts_active_code_ix());
- if (modp->curr.code_hdr->literals_start) {
- erts_free(ERTS_ALC_T_LITERAL, modp->curr.code_hdr->literals_start);
- }
- erts_free(ERTS_ALC_T_CODE, modp->curr.code_hdr);
- modp->curr.code_hdr = NULL;
- modp->curr.code_length = 0;
- modp->curr.catches = BEAM_CATCHES_NIL;
- erts_remove_from_ranges(code);
+
+ for (i = 0; i < export_list_size(code_ix); i++) {
+ Export *ep = export_list(i,code_ix);
+ if (ep == NULL || ep->code[0] != BIF_ARG_1) {
+ continue;
+ }
+ if (ep->code[3] == (BeamInstr) em_apply_bif) {
+ continue;
+ }
+ ep->code[4] = 0;
+ }
}
erts_smp_thr_progress_unblock();
erts_smp_proc_lock(BIF_P, ERTS_PROC_LOCK_MAIN);
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index 9bd9b4bfc0..95489d9a63 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -32,6 +32,7 @@
#include "bif.h"
#include "external.h"
#include "beam_load.h"
+#include "beam_bp.h"
#include "big.h"
#include "erl_bits.h"
#include "beam_catches.h"
@@ -766,7 +767,7 @@ Eterm
erts_finish_loading(Binary* magic, Process* c_p,
ErtsProcLocks c_p_locks, Eterm* modp)
{
- Eterm retval;
+ Eterm retval = NIL;
LoaderState* stp = ERTS_MAGIC_BIN_DATA(magic);
Module* mod_tab_p;
struct erl_module_instance* inst_p;
@@ -779,16 +780,52 @@ erts_finish_loading(Binary* magic, Process* c_p,
ERTS_SMP_LC_ASSERT(erts_initialized == 0 || erts_has_code_write_permission() ||
erts_smp_thr_progress_is_blocking());
-
/*
* Make current code for the module old and insert the new code
* as current. This will fail if there already exists old code
* for the module.
*/
+ mod_tab_p = erts_put_module(stp->module);
CHKBLK(ERTS_ALC_T_CODE,stp->code);
- retval = beam_make_current_old(c_p, c_p_locks, stp->module);
- ASSERT(retval == NIL);
+ if (!stp->on_load) {
+ /*
+ * Normal case -- no -on_load() function.
+ */
+ retval = beam_make_current_old(c_p, c_p_locks, stp->module);
+ ASSERT(retval == NIL);
+ } else {
+ ErtsCodeIndex code_ix = erts_staging_code_ix();
+ Eterm module = stp->module;
+ int i;
+
+ /*
+ * There is an -on_load() function. We will keep the current
+ * code, but we must turn off any tracing.
+ */
+
+ for (i = 0; i < export_list_size(code_ix); i++) {
+ Export *ep = export_list(i, code_ix);
+ if (ep == NULL || ep->code[0] != module) {
+ continue;
+ }
+ if (ep->addressv[code_ix] == ep->code+3) {
+ if (ep->code[3] == (BeamInstr) em_apply_bif) {
+ continue;
+ } else if (ep->code[3] ==
+ (BeamInstr) BeamOp(op_i_generic_breakpoint)) {
+ ERTS_SMP_LC_ASSERT(erts_smp_thr_progress_is_blocking());
+ ASSERT(mod_tab_p->curr.num_traced_exports > 0);
+ erts_clear_export_break(mod_tab_p, ep->code+3);
+ ep->addressv[code_ix] = (BeamInstr *) ep->code[4];
+ ep->code[4] = 0;
+ }
+ ASSERT(ep->code[4] == 0);
+ }
+ }
+ ASSERT(mod_tab_p->curr.num_breakpoints == 0);
+ ASSERT(mod_tab_p->curr.num_traced_exports == 0);
+ }
/*
* Update module table.
@@ -796,8 +833,11 @@ erts_finish_loading(Binary* magic, Process* c_p,
size = stp->loaded_size;
erts_total_code_size += size;
- mod_tab_p = erts_put_module(stp->module);
- inst_p = &mod_tab_p->curr;
+ if (stp->on_load) {
+ inst_p = &mod_tab_p->old;
+ } else {
+ inst_p = &mod_tab_p->curr;
+ }
inst_p->code_hdr = stp->hdr;
inst_p->code_length = size;
@@ -4757,10 +4797,10 @@ final_touch(LoaderState* stp, struct erl_module_instance* inst_p)
ep->addressv[erts_staging_code_ix()] = address;
} else {
/*
- * Don't make any of the exported functions
- * callable yet.
+ * on_load: Don't make any of the exported functions
+ * callable yet. Keep any function in the current
+ * code callable.
*/
- ep->addressv[erts_staging_code_ix()] = ep->code+3;
ep->code[4] = (BeamInstr) address;
}
}
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 941f44b9ec..dc83a780a2 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -2780,7 +2780,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ErlNifEntry* entry = NULL;
ErlNifEnv env;
int i, err, encoding;
- Module* mod;
+ Module* module_p;
Eterm mod_atom;
const Atom* mod_atomp;
Eterm f_atom;
@@ -2790,6 +2790,8 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
int veto;
struct erl_module_nif* lib = NULL;
int reload_warning = 0;
+ struct erl_module_instance* this_mi;
+ struct erl_module_instance* prev_mi;
encoding = erts_get_native_filename_encoding();
if (encoding == ERL_FILENAME_WIN_WCHAR) {
@@ -2823,21 +2825,29 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
ASSERT(caller != NULL);
mod_atom = caller[0];
ASSERT(is_atom(mod_atom));
- mod=erts_get_module(mod_atom, erts_active_code_ix());
- ASSERT(mod != NULL);
+ module_p = erts_get_module(mod_atom, erts_active_code_ix());
+ ASSERT(module_p != NULL);
mod_atomp = atom_tab(atom_val(mod_atom));
init_func = erts_static_nif_get_nif_init((char*)mod_atomp->name, mod_atomp->len);
if (init_func != NULL)
handle = init_func;
- if (!in_area(caller, mod->curr.code_hdr, mod->curr.code_length)) {
- ASSERT(in_area(caller, mod->old.code_hdr, mod->old.code_length));
+ if (in_area(caller, module_p->old.code_hdr, module_p->old.code_length)) {
+ if (module_p->old.code_hdr->on_load_function_ptr) {
+ this_mi = &module_p->old;
+ prev_mi = &module_p->curr;
+ } else {
+ ret = load_nif_error(BIF_P, "old_code", "Calling load_nif from old "
+ "module '%T' not allowed", mod_atom);
+ goto error;
+ }
+ } else {
+ this_mi = &module_p->curr;
+ prev_mi = &module_p->old;
+ }
- ret = load_nif_error(BIF_P, "old_code", "Calling load_nif from old "
- "module '%T' not allowed", mod_atom);
- }
- else if (init_func == NULL &&
+ if (init_func == NULL &&
(err=erts_sys_ddll_open(lib_name, &handle, &errdesc)) != ERL_DE_NO_ERROR) {
const char slogan[] = "Failed to load NIF library";
if (strstr(errdesc.str, lib_name) != NULL) {
@@ -2886,7 +2896,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
for (i=0; i < entry->num_of_funcs && ret==am_ok; i++) {
BeamInstr** code_pp;
if (!erts_atom_get(f->name, sys_strlen(f->name), &f_atom, ERTS_ATOM_ENC_LATIN1)
- || (code_pp = get_func_pp(mod->curr.code_hdr, f_atom, f->arity))==NULL) {
+ || (code_pp = get_func_pp(this_mi->code_hdr, f_atom, f->arity))==NULL) {
ret = load_nif_error(BIF_P,bad_lib,"Function not found %T:%s/%u",
mod_atom, f->name, f->arity);
}
@@ -2937,9 +2947,9 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
erts_refc_init(&lib->rt_cnt, 0);
erts_refc_init(&lib->rt_dtor_cnt, 0);
ASSERT(opened_rt_list == NULL);
- lib->mod = mod;
+ lib->mod = module_p;
env.mod_nif = lib;
- if (mod->curr.nif != NULL) { /*************** Reload ******************/
+ if (this_mi->nif != NULL) { /*************** Reload ******************/
/*
* Repeated load_nif calls from same Erlang module instance ("reload")
* is deprecated and was only ment as a development feature not to
@@ -2947,16 +2957,16 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
*/
int k, old_incr = 0;
ErlNifFunc* old_func;
- lib->priv_data = mod->curr.nif->priv_data;
+ lib->priv_data = this_mi->nif->priv_data;
- ASSERT(mod->curr.nif->entry != NULL);
+ ASSERT(this_mi->nif->entry != NULL);
if (entry->reload == NULL) {
ret = load_nif_error(BIF_P,reload,"Reload not supported by this NIF library.");
goto error;
}
/* Check that no NIF is removed */
- old_func = mod->curr.nif->entry->funcs;
- for (k=0; k < mod->curr.nif->entry->num_of_funcs; k++) {
+ old_func = this_mi->nif->entry->funcs;
+ for (k=0; k < this_mi->nif->entry->num_of_funcs; k++) {
int incr = 0;
ErlNifFunc* f = entry->funcs;
for (i=0; i < entry->num_of_funcs; i++) {
@@ -2972,7 +2982,7 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
old_func->name, old_func->arity);
goto error;
}
- old_func = next_func(mod->curr.nif->entry, &old_incr, old_func);
+ old_func = next_func(this_mi->nif->entry, &old_incr, old_func);
}
erts_pre_nif(&env, BIF_P, lib, NULL);
veto = entry->reload(&env, &lib->priv_data, BIF_ARG_2);
@@ -2982,24 +2992,24 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
}
else {
commit_opened_resource_types(lib);
- mod->curr.nif->entry = NULL; /* to prevent 'unload' callback */
- erts_unload_nif(mod->curr.nif);
+ this_mi->nif->entry = NULL; /* to prevent 'unload' callback */
+ erts_unload_nif(this_mi->nif);
reload_warning = 1;
}
}
else {
lib->priv_data = NULL;
- if (mod->old.nif != NULL) { /**************** Upgrade ***************/
- void* prev_old_data = mod->old.nif->priv_data;
+ if (prev_mi->nif != NULL) { /**************** Upgrade ***************/
+ void* prev_old_data = prev_mi->nif->priv_data;
if (entry->upgrade == NULL) {
ret = load_nif_error(BIF_P, upgrade, "Upgrade not supported by this NIF library.");
goto error;
}
- erts_pre_nif(&env, BIF_P, lib, NULL);
- veto = entry->upgrade(&env, &lib->priv_data, &mod->old.nif->priv_data, BIF_ARG_2);
+ erts_pre_nif(&env, BIF_P, lib, NULL);
+ veto = entry->upgrade(&env, &lib->priv_data, &prev_mi->nif->priv_data, BIF_ARG_2);
erts_post_nif(&env);
if (veto) {
- mod->old.nif->priv_data = prev_old_data;
+ prev_mi->nif->priv_data = prev_old_data;
ret = load_nif_error(BIF_P, upgrade, "Library upgrade-call unsuccessful.");
}
else
@@ -3024,12 +3034,12 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
int incr = 0;
ErlNifFunc* f = entry->funcs;
- mod->curr.nif = lib;
+ this_mi->nif = lib;
for (i=0; i < entry->num_of_funcs; i++)
{
BeamInstr* code_ptr;
erts_atom_get(f->name, sys_strlen(f->name), &f_atom, ERTS_ATOM_ENC_LATIN1);
- code_ptr = *get_func_pp(mod->curr.code_hdr, f_atom, f->arity);
+ code_ptr = *get_func_pp(this_mi->code_hdr, f_atom, f->arity);
if (code_ptr[1] == 0) {
code_ptr[5+0] = (BeamInstr) BeamOp(op_call_nif);
diff --git a/lib/kernel/src/code_server.erl b/lib/kernel/src/code_server.erl
index 90b2a06c46..56372f90ca 100644
--- a/lib/kernel/src/code_server.erl
+++ b/lib/kernel/src/code_server.erl
@@ -1351,6 +1351,7 @@ finish_on_load_1(Mod, File, OnLoadRes, WaitingPids, Db) ->
Res = case Keep of
false ->
_ = finish_on_load_report(Mod, OnLoadRes),
+ _ = erts_code_purger:purge(Mod),
{error,on_load_failure};
true ->
ets:insert(Db, {Mod,File}),
diff --git a/lib/kernel/test/code_SUITE.erl b/lib/kernel/test/code_SUITE.erl
index a0b72925f7..547881f3b2 100644
--- a/lib/kernel/test/code_SUITE.erl
+++ b/lib/kernel/test/code_SUITE.erl
@@ -20,6 +20,7 @@
-module(code_SUITE).
-include_lib("common_test/include/ct.hrl").
+-include_lib("syntax_tools/include/merl.hrl").
-export([all/0, suite/0,groups/0,init_per_group/2,end_per_group/2]).
-export([set_path/1, get_path/1, add_path/1, add_paths/1, del_path/1,
@@ -33,7 +34,9 @@
where_is_file/1,
purge_stacktrace/1, mult_lib_roots/1, bad_erl_libs/1,
code_archive/1, code_archive2/1, on_load/1, on_load_binary/1,
- on_load_embedded/1, on_load_errors/1, big_boot_embedded/1,
+ on_load_embedded/1, on_load_errors/1, on_load_update/1,
+ on_load_purge/1,
+ big_boot_embedded/1,
native_early_modules/1, get_mode/1,
normalized_paths/1]).
@@ -61,7 +64,8 @@ all() ->
ext_mod_dep, clash, where_is_file,
purge_stacktrace, mult_lib_roots,
bad_erl_libs, code_archive, code_archive2, on_load,
- on_load_binary, on_load_embedded, on_load_errors,
+ on_load_binary, on_load_embedded, on_load_errors, on_load_update,
+ on_load_purge,
big_boot_embedded, native_early_modules, get_mode, normalized_paths].
groups() ->
@@ -1436,6 +1440,89 @@ do_on_load_error(ReturnValue) ->
{undef,[{on_load_error,main,[],_}|_]} = Exit
end.
+on_load_update(_Config) ->
+ {Mod,Code1} = on_load_update_code(1),
+ {module,Mod} = code:load_binary(Mod, "", Code1),
+ 42 = Mod:a(),
+ 100 = Mod:b(99),
+ 4 = erlang:trace_pattern({Mod,'_','_'}, true),
+
+ {Mod,Code2} = on_load_update_code(2),
+ {error,on_load_failure} = code:load_binary(Mod, "", Code2),
+ 42 = Mod:a(),
+ 100 = Mod:b(99),
+ {'EXIT',{undef,_}} = (catch Mod:never()),
+ 4 = erlang:trace_pattern({Mod,'_','_'}, false),
+
+ {Mod,Code3} = on_load_update_code(3),
+ {module,Mod} = code:load_binary(Mod, "", Code3),
+ 100 = Mod:c(),
+ {'EXIT',{undef,_}} = (catch Mod:a()),
+ {'EXIT',{undef,_}} = (catch Mod:b(10)),
+ {'EXIT',{undef,_}} = (catch Mod:never()),
+
+ ok.
+
+on_load_update_code(Version) ->
+ Mod = ?FUNCTION_NAME,
+ Tree = on_load_update_code_1(Version, Mod),
+ io:format("Version ~p", [Version]),
+ {ok,Mod,Code} = merl:compile(Tree),
+ merl:print(Tree),
+ io:nl(),
+ {Mod,Code}.
+
+on_load_update_code_1(1, Mod) ->
+ ?Q(["-module('@Mod@').\n",
+ "-export([a/0,b/1]).\n"
+ "-on_load(f/0).\n",
+ "f() -> ok.\n",
+ "a() -> 42.\n"
+ "b(I) -> I+1.\n"]);
+on_load_update_code_1(2, Mod) ->
+ ?Q(["-module('@Mod@').\n",
+ "-export([never/0]).\n"
+ "-on_load(f/0).\n",
+ "f() -> 42 = '@Mod@':a(), 1 = '@Mod@':b(0), fail.\n",
+ "never() -> never.\n"]);
+on_load_update_code_1(3, Mod) ->
+ ?Q(["-module('@Mod@').\n",
+ "-export([c/0]).\n"
+ "-on_load(f/0).\n",
+ "f() -> ok.\n",
+ "c() -> 100.\n"]).
+
+on_load_purge(_Config) ->
+ Mod = ?FUNCTION_NAME,
+ register(Mod, self()),
+ Tree = ?Q(["-module('@Mod@').\n",
+ "-on_load(f/0).\n",
+ "loop() -> loop().\n",
+ "f() ->\n",
+ "'@Mod@' ! {self(),spawn(fun loop/0)},\n",
+ "receive Ack -> Ack end.\n"]),
+ merl:print(Tree),
+ {ok,Mod,Code} = merl:compile(Tree),
+ P = spawn(fun() ->
+ exit(code:load_binary(Mod, "", Code))
+ end),
+ monitor(process, P),
+ receive
+ {Pid1,Pid2} ->
+ monitor(process, Pid2),
+ Pid1 ! ack_and_failure,
+ receive
+ {'DOWN',_,process,P,Exit1} ->
+ {error,on_load_failure} = Exit1
+ end,
+ receive
+ {'DOWN',_,process,Pid2,Exit2} ->
+ io:format("~p\n", [Exit2])
+ after 10000 ->
+ ct:fail(no_down_message)
+ end
+ end.
+
%% Test that the native code of early loaded modules is loaded.
native_early_modules(Config) when is_list(Config) ->
case erlang:system_info(hipe_architecture) of
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-10 07:19:10 +0000