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-rw-r--r--erts/emulator/beam/atom.names1
-rw-r--r--erts/emulator/beam/beam_bif_load.c62
-rw-r--r--erts/emulator/beam/beam_load.c15
-rw-r--r--erts/emulator/beam/erl_nif.c18
-rw-r--r--erts/emulator/beam/module.c3
-rw-r--r--erts/emulator/beam/module.h1
6 files changed, 76 insertions, 24 deletions
diff --git a/erts/emulator/beam/atom.names b/erts/emulator/beam/atom.names
index 9dae67cb2d..2b66bf6f4e 100644
--- a/erts/emulator/beam/atom.names
+++ b/erts/emulator/beam/atom.names
@@ -505,6 +505,7 @@ atom port_limit
atom port_op
atom positive
atom prepare
+atom prepare_on_load
atom print
atom priority
atom private
diff --git a/erts/emulator/beam/beam_bif_load.c b/erts/emulator/beam/beam_bif_load.c
index dddcfbb77d..5969197168 100644
--- a/erts/emulator/beam/beam_bif_load.c
+++ b/erts/emulator/beam/beam_bif_load.c
@@ -53,6 +53,7 @@ static struct {
ErlFunEntry *def_funs[10];
Uint fe_size;
Uint fe_ix;
+ struct erl_module_instance saved_old;
} purge_state;
Process *erts_code_purger = NULL;
@@ -105,6 +106,8 @@ init_purge_state(void)
purge_state.fe_size = sizeof(purge_state.def_funs);
purge_state.fe_size /= sizeof(purge_state.def_funs[0]);
purge_state.fe_ix = 0;
+
+ purge_state.saved_old.code_hdr = 0;
}
void
@@ -739,10 +742,13 @@ 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->old.code_hdr) {
- BIF_TRAP_CODE_PTR_0(BIF_P, modp->old.code_hdr->on_load_function_ptr);
+ if (!modp || !modp->on_load) {
+ BIF_ERROR(BIF_P, BADARG);
}
- else {
+ if (modp->on_load->code_hdr) {
+ BIF_TRAP_CODE_PTR_0(BIF_P,
+ modp->on_load->code_hdr->on_load_function_ptr);
+ } else {
BIF_ERROR(BIF_P, BADARG);
}
}
@@ -765,14 +771,14 @@ 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->old.code_hdr) {
+ if (!modp || !modp->on_load || !modp->on_load->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->old.code_hdr->on_load_function_ptr == NULL) {
+ if (modp->on_load->code_hdr->on_load_function_ptr == NULL) {
goto error;
}
if (BIF_ARG_2 != am_false && BIF_ARG_2 != am_true) {
@@ -781,14 +787,17 @@ 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.
+ * Make the code with the on_load function current.
*/
- t = modp->curr;
- modp->curr = modp->old;
- modp->old = t;
+
+ if (modp->curr.code_hdr) {
+ modp->old = modp->curr;
+ }
+ modp->curr = *modp->on_load;
+ erts_free(ERTS_ALC_T_PREPARED_CODE, modp->on_load);
+ modp->on_load = 0;
/*
* The on_load function succeded. Fix up export entries.
@@ -1731,7 +1740,8 @@ BIF_RETTYPE erts_internal_purge_module_2(BIF_ALIST_2)
switch (BIF_ARG_2) {
- case am_prepare: {
+ case am_prepare:
+ case am_prepare_on_load: {
/*
* Prepare for purge by marking all fun
* entries referring to the code to purge
@@ -1756,7 +1766,22 @@ BIF_RETTYPE erts_internal_purge_module_2(BIF_ALIST_2)
/*
* Any code to purge?
*/
- erts_rlock_old_code(code_ix);
+
+ if (BIF_ARG_2 == am_prepare_on_load) {
+ erts_rwlock_old_code(code_ix);
+ } else {
+ erts_rlock_old_code(code_ix);
+ }
+
+ if (BIF_ARG_2 == am_prepare_on_load) {
+ ASSERT(modp->on_load);
+ ASSERT(modp->on_load->code_hdr);
+ purge_state.saved_old = modp->old;
+ modp->old = *modp->on_load;
+ erts_free(ERTS_ALC_T_PREPARED_CODE, (void *) modp->on_load);
+ modp->on_load = 0;
+ }
+
if (!modp->old.code_hdr)
res = am_false;
else {
@@ -1774,7 +1799,12 @@ BIF_RETTYPE erts_internal_purge_module_2(BIF_ALIST_2)
ERTS_SET_COPY_LITERAL_AREA(modp->old.code_hdr->literal_area);
#endif
}
- erts_runlock_old_code(code_ix);
+
+ if (BIF_ARG_2 == am_prepare_on_load) {
+ erts_rwunlock_old_code(code_ix);
+ } else {
+ erts_runlock_old_code(code_ix);
+ }
}
#ifndef ERTS_SMP
@@ -1911,8 +1941,14 @@ BIF_RETTYPE erts_internal_purge_module_2(BIF_ALIST_2)
modp->old.code_length = 0;
modp->old.catches = BEAM_CATCHES_NIL;
erts_remove_from_ranges(code);
+
ERTS_BIF_PREP_RET(ret, am_true);
}
+
+ if (purge_state.saved_old.code_hdr) {
+ modp->old = purge_state.saved_old;
+ purge_state.saved_old.code_hdr = 0;
+ }
erts_rwunlock_old_code(code_ix);
}
if (is_blocking) {
diff --git a/erts/emulator/beam/beam_load.c b/erts/emulator/beam/beam_load.c
index f63addb309..0afdedf6c2 100644
--- a/erts/emulator/beam/beam_load.c
+++ b/erts/emulator/beam/beam_load.c
@@ -833,11 +833,20 @@ erts_finish_loading(Binary* magic, Process* c_p,
size = stp->loaded_size;
erts_total_code_size += size;
- if (stp->on_load) {
- inst_p = &mod_tab_p->old;
- } else {
+
+ if (!stp->on_load) {
inst_p = &mod_tab_p->curr;
+ } else {
+ mod_tab_p->on_load =
+ (struct erl_module_instance *)
+ erts_alloc(ERTS_ALC_T_PREPARED_CODE,
+ sizeof(struct erl_module_instance));
+ inst_p = mod_tab_p->on_load;
+ inst_p->nif = 0;
+ inst_p->num_breakpoints = 0;
+ inst_p->num_traced_exports = 0;
}
+
inst_p->code_hdr = stp->hdr;
inst_p->code_length = size;
diff --git a/erts/emulator/beam/erl_nif.c b/erts/emulator/beam/erl_nif.c
index 559b4017e7..3a547982da 100644
--- a/erts/emulator/beam/erl_nif.c
+++ b/erts/emulator/beam/erl_nif.c
@@ -3203,18 +3203,20 @@ BIF_RETTYPE load_nif_2(BIF_ALIST_2)
if (init_func != NULL)
handle = init_func;
+ this_mi = &module_p->curr;
+ prev_mi = &module_p->old;
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;
+ ret = load_nif_error(BIF_P, "old_code", "Calling load_nif from old "
+ "module '%T' not allowed", mod_atom);
+ goto error;
+ } else if (module_p->on_load) {
+ ASSERT(module_p->on_load->code_hdr->on_load_function_ptr);
+ if (module_p->curr.code_hdr) {
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;
+ prev_mi = &module_p->old;
}
- } else {
- this_mi = &module_p->curr;
- prev_mi = &module_p->old;
+ this_mi = module_p->on_load;
}
if (init_func == NULL &&
diff --git a/erts/emulator/beam/module.c b/erts/emulator/beam/module.c
index 3eb11f1693..4f36377450 100644
--- a/erts/emulator/beam/module.c
+++ b/erts/emulator/beam/module.c
@@ -85,6 +85,7 @@ static Module* module_alloc(Module* tmpl)
obj->old.num_breakpoints = 0;
obj->curr.num_traced_exports = 0;
obj->old.num_traced_exports = 0;
+ obj->on_load = 0;
return obj;
}
@@ -201,6 +202,7 @@ void module_start_staging(void)
dst_mod->curr = src_mod->curr;
dst_mod->old = src_mod->old;
+ dst_mod->on_load = src_mod->on_load;
}
/*
@@ -214,6 +216,7 @@ void module_start_staging(void)
dst_mod->curr = src_mod->curr;
dst_mod->old = src_mod->old;
+ dst_mod->on_load = src_mod->on_load;
}
newsz = index_table_sz(dst);
erts_smp_atomic_add_nob(&tot_module_bytes, (newsz - oldsz));
diff --git a/erts/emulator/beam/module.h b/erts/emulator/beam/module.h
index 5a60bc90d9..1c1afc8461 100644
--- a/erts/emulator/beam/module.h
+++ b/erts/emulator/beam/module.h
@@ -39,6 +39,7 @@ typedef struct erl_module {
struct erl_module_instance curr;
struct erl_module_instance old; /* protected by "old_code" rwlock */
+ struct erl_module_instance* on_load;
} Module;
Module* erts_get_module(Eterm mod, ErtsCodeIndex code_ix);
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-03 09:28:29 +0000