aboutsummaryrefslogtreecommitdiffstats
path: root/erts/emulator/beam/export.c
diff options
context:
space:
mode:
Diffstat (limited to 'erts/emulator/beam/export.c')
-rw-r--r--erts/emulator/beam/export.c106
1 files changed, 68 insertions, 38 deletions
diff --git a/erts/emulator/beam/export.c b/erts/emulator/beam/export.c
index fb0ee99119..82636526bf 100644
--- a/erts/emulator/beam/export.c
+++ b/erts/emulator/beam/export.c
@@ -47,6 +47,20 @@ static erts_smp_rwmtx_t export_table_lock; /* Locks the secondary export table.
extern BeamInstr* em_call_error_handler;
extern BeamInstr* em_call_traced_function;
+struct export_entry
+{
+ IndexSlot slot; /* MUST BE LOCATED AT TOP OF STRUCT!!! */
+ Export* ep;
+};
+
+/* Helper struct that brings things together in one allocation
+*/
+struct export_blob
+{
+ Export exp;
+ struct export_entry entry;
+};
+
void
export_info(int to, void *to_arg)
{
@@ -65,45 +79,54 @@ export_info(int to, void *to_arg)
static HashValue
-export_hash(Export* x)
+export_hash(struct export_entry* ee)
{
+ Export* x = ee->ep;
return EXPORT_HASH(x->code[0], x->code[1], x->code[2]);
}
static int
-export_cmp(Export* tmpl, Export* obj)
+export_cmp(struct export_entry* tmpl_e, struct export_entry* obj_e)
{
+ Export* tmpl = tmpl_e->ep;
+ Export* obj = obj_e->ep;
return !(tmpl->code[0] == obj->code[0] &&
tmpl->code[1] == obj->code[1] &&
tmpl->code[2] == obj->code[2]);
}
-static Export*
-export_alloc(Export* tmpl)
+static struct export_entry*
+export_alloc(struct export_entry* tmpl_e)
{
- Export* obj = (Export*) erts_alloc(ERTS_ALC_T_EXPORT, sizeof(Export));
+
+ Export* tmpl = tmpl_e->ep;
+ struct export_blob* blob =
+ (struct export_blob*) erts_alloc(ERTS_ALC_T_EXPORT, sizeof(*blob));
+ Export* obj = &blob->exp;
obj->fake_op_func_info_for_hipe[0] = 0;
obj->fake_op_func_info_for_hipe[1] = 0;
obj->code[0] = tmpl->code[0];
obj->code[1] = tmpl->code[1];
obj->code[2] = tmpl->code[2];
- obj->slot.index = -1;
+ blob->entry.slot.index = -1;
obj->address = obj->code+3;
obj->code[3] = (BeamInstr) em_call_error_handler;
obj->code[4] = 0;
obj->match_prog_set = NULL;
- return obj;
-}
+ blob->entry.ep = &blob->exp;
+ return &blob->entry;
+}
+/*SVERK
static void
-export_free(Export* obj)
+export_free(struct export_entry* obj)
{
erts_free(ERTS_ALC_T_EXPORT, (void*) obj);
}
-
+*/
void
init_export_table(void)
@@ -118,7 +141,7 @@ init_export_table(void)
f.hash = (H_FUN) export_hash;
f.cmp = (HCMP_FUN) export_cmp;
f.alloc = (HALLOC_FUN) export_alloc;
- f.free = (HFREE_FUN) export_free;
+ f.free = (HFREE_FUN) NULL; /*SVERK export_free;*/
erts_index_init(ERTS_ALC_T_EXPORT_TABLE, &export_table, "export_list",
EXPORT_INITIAL_SIZE, EXPORT_LIMIT, f);
@@ -154,13 +177,23 @@ erts_find_export_entry(Eterm m, Eterm f, unsigned int a)
*/
while (b != (HashBucket*) 0) {
- Export* ep = (Export *) b;
+ Export* ep = ((struct export_entry*) b)->ep;
if (ep->code[0] == m && ep->code[1] == f && ep->code[2] == a) {
- break;
+ return ep;
}
b = b->next;
}
- return (Export*)b;
+ return NULL;
+}
+
+static struct export_entry* init_template(struct export_blob* blob,
+ Eterm m, Eterm f, unsigned a)
+{
+ blob->entry.ep = &blob->exp;
+ blob->exp.code[0] = m;
+ blob->exp.code[1] = f;
+ blob->exp.code[2] = a;
+ return &blob->entry;
}
@@ -178,19 +211,15 @@ erts_find_export_entry(Eterm m, Eterm f, unsigned int a)
Export*
erts_find_function(Eterm m, Eterm f, unsigned int a)
{
- Export e;
- Export* ep;
-
- e.code[0] = m;
- e.code[1] = f;
- e.code[2] = a;
+ struct export_blob blob;
+ struct export_entry* ee;
- ep = hash_get(&export_table.htable, (void*) &e);
- if (ep != NULL && ep->address == ep->code+3 &&
- ep->code[3] != (BeamInstr) em_call_traced_function) {
- ep = NULL;
+ ee = hash_get(&export_table.htable, init_template(&blob, m, f, a));
+ if (ee == NULL || (ee->ep->address == ee->ep->code+3 &&
+ ee->ep->code[3] != (BeamInstr) em_call_traced_function)) {
+ return NULL;
}
- return ep;
+ return ee->ep;
}
/*
@@ -205,18 +234,15 @@ erts_find_function(Eterm m, Eterm f, unsigned int a)
Export*
erts_export_put(Eterm mod, Eterm func, unsigned int arity)
{
- Export e;
+ struct export_blob blob;
int ix;
ERTS_SMP_LC_ASSERT(erts_initialized == 0
|| erts_smp_thr_progress_is_blocking());
ASSERT(is_atom(mod));
ASSERT(is_atom(func));
- e.code[0] = mod;
- e.code[1] = func;
- e.code[2] = arity;
- ix = index_put(&export_table, (void*) &e);
- return (Export*) erts_index_lookup(&export_table, ix);
+ ix = index_put(&export_table, init_template(&blob, mod, func, arity));
+ return ((struct export_entry*) erts_index_lookup(&export_table, ix))->ep;
}
/*
@@ -232,24 +258,24 @@ erts_export_put(Eterm mod, Eterm func, unsigned int arity)
Export*
erts_export_get_or_make_stub(Eterm mod, Eterm func, unsigned int arity)
{
- Export e;
+ struct export_blob blob;
Export* ep;
ASSERT(is_atom(mod));
ASSERT(is_atom(func));
- e.code[0] = mod;
- e.code[1] = func;
- e.code[2] = arity;
ep = erts_find_export_entry(mod, func, arity);
if (ep == 0) {
+ struct export_entry* entry;
/*
* The code is not loaded (yet). Put the export in the secondary
* export table, to avoid having to lock the main export table.
*/
export_write_lock();
- ep = (Export *) hash_put(&secondary_export_table, (void*) &e);
+ entry = (struct export_entry *) hash_put(&secondary_export_table,
+ init_template(&blob, mod, func, arity));
export_write_unlock();
+ ep = entry->ep;
}
return ep;
}
@@ -281,7 +307,7 @@ erts_export_consolidate(void)
Export *export_list(int i)
{
- return (Export*) erts_index_lookup(&export_table, i);
+ return ((struct export_entry*) erts_index_lookup(&export_table, i))->ep;
}
int export_list_size(void)
@@ -296,5 +322,9 @@ int export_table_sz(void)
Export *export_get(Export *e)
{
- return hash_get(&export_table.htable, e);
+ struct export_entry ee;
+ struct export_entry* entry;
+ ee.ep = e;
+ entry = (struct export_entry*)hash_get(&export_table.htable, &ee);
+ return entry ? entry->ep : NULL;
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-30 11:26:18 +0000