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Diffstat (limited to 'erts/emulator/beam/atom.c')
-rw-r--r--erts/emulator/beam/atom.c91
1 files changed, 50 insertions, 41 deletions
diff --git a/erts/emulator/beam/atom.c b/erts/emulator/beam/atom.c
index 2052afe52b..e5b7616a0d 100644
--- a/erts/emulator/beam/atom.c
+++ b/erts/emulator/beam/atom.c
@@ -34,20 +34,18 @@
IndexTable erts_atom_table; /* The index table */
-#include "erl_smp.h"
+static erts_rwmtx_t atom_table_lock;
-static erts_smp_rwmtx_t atom_table_lock;
-
-#define atom_read_lock() erts_smp_rwmtx_rlock(&atom_table_lock)
-#define atom_read_unlock() erts_smp_rwmtx_runlock(&atom_table_lock)
-#define atom_write_lock() erts_smp_rwmtx_rwlock(&atom_table_lock)
-#define atom_write_unlock() erts_smp_rwmtx_rwunlock(&atom_table_lock)
+#define atom_read_lock() erts_rwmtx_rlock(&atom_table_lock)
+#define atom_read_unlock() erts_rwmtx_runlock(&atom_table_lock)
+#define atom_write_lock() erts_rwmtx_rwlock(&atom_table_lock)
+#define atom_write_unlock() erts_rwmtx_rwunlock(&atom_table_lock)
#if 0
#define ERTS_ATOM_PUT_OPS_STAT
#endif
#ifdef ERTS_ATOM_PUT_OPS_STAT
-static erts_smp_atomic_t atom_put_ops;
+static erts_atomic_t atom_put_ops;
#endif
/* Functions for allocating space for the ext of atoms. We do not
@@ -76,7 +74,7 @@ void atom_info(fmtfn_t to, void *to_arg)
index_info(to, to_arg, &erts_atom_table);
#ifdef ERTS_ATOM_PUT_OPS_STAT
erts_print(to, to_arg, "atom_put_ops: %ld\n",
- erts_smp_atomic_read_nob(&atom_put_ops));
+ erts_atomic_read_nob(&atom_put_ops));
#endif
if (lock)
@@ -138,7 +136,7 @@ atom_hash(Atom* obj)
while(len--) {
v = *p++;
/* latin1 clutch for r16 */
- if ((v & 0xFE) == 0xC2 && (*p & 0xC0) == 0x80) {
+ if (len && (v & 0xFE) == 0xC2 && (*p & 0xC0) == 0x80) {
v = (v << 6) | (*p & 0x3F);
p++; len--;
}
@@ -199,7 +197,7 @@ atom_alloc(Atom* tmpl)
static void
atom_free(Atom* obj)
{
- erts_free(ERTS_ALC_T_ATOM, (void*) obj);
+ ASSERT(obj->slot.index == atom_val(am_ErtsSecretAtom));
}
static void latin1_to_utf8(byte* conv_buf, const byte** srcp, int* lenp)
@@ -233,10 +231,10 @@ need_convertion:
}
/*
- * erts_atom_put() may fail. If it fails THE_NON_VALUE is returned!
+ * erts_atom_put_index() may fail. Returns negative indexes for errors.
*/
-Eterm
-erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
+int
+erts_atom_put_index(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
{
byte utf8_copy[MAX_ATOM_SZ_FROM_LATIN1];
const byte *text = name;
@@ -246,14 +244,14 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
int aix;
#ifdef ERTS_ATOM_PUT_OPS_STAT
- erts_smp_atomic_inc_nob(&atom_put_ops);
+ erts_atomic_inc_nob(&atom_put_ops);
#endif
if (tlen < 0) {
if (trunc)
tlen = 0;
else
- return THE_NON_VALUE;
+ return ATOM_MAX_CHARS_ERROR;
}
switch (enc) {
@@ -262,7 +260,7 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
if (trunc)
tlen = MAX_ATOM_CHARACTERS;
else
- return THE_NON_VALUE;
+ return ATOM_MAX_CHARS_ERROR;
}
#ifdef DEBUG
for (aix = 0; aix < len; aix++) {
@@ -276,7 +274,7 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
if (trunc)
tlen = MAX_ATOM_CHARACTERS;
else
- return THE_NON_VALUE;
+ return ATOM_MAX_CHARS_ERROR;
}
no_latin1_chars = tlen;
latin1_to_utf8(utf8_copy, &text, &tlen);
@@ -284,7 +282,7 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
case ERTS_ATOM_ENC_UTF8:
/* First sanity check; need to verify later */
if (tlen > MAX_ATOM_SZ_LIMIT && !trunc)
- return THE_NON_VALUE;
+ return ATOM_MAX_CHARS_ERROR;
break;
}
@@ -295,7 +293,7 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
atom_read_unlock();
if (aix >= 0) {
/* Already in table no need to verify it */
- return make_atom(aix);
+ return aix;
}
if (enc == ERTS_ATOM_ENC_UTF8) {
@@ -314,13 +312,13 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
case ERTS_UTF8_OK_MAX_CHARS:
/* Truncated... */
if (!trunc)
- return THE_NON_VALUE;
+ return ATOM_MAX_CHARS_ERROR;
ASSERT(no_chars == MAX_ATOM_CHARACTERS);
tlen = err_pos - text;
break;
default:
/* Bad utf8... */
- return THE_NON_VALUE;
+ return ATOM_BAD_ENCODING_ERROR;
}
}
@@ -333,7 +331,20 @@ erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
atom_write_lock();
aix = index_put(&erts_atom_table, (void*) &a);
atom_write_unlock();
- return make_atom(aix);
+ return aix;
+}
+
+/*
+ * erts_atom_put() may fail. If it fails THE_NON_VALUE is returned!
+ */
+Eterm
+erts_atom_put(const byte *name, int len, ErtsAtomEncoding enc, int trunc)
+{
+ int aix = erts_atom_put_index(name, len, enc, trunc);
+ if (aix >= 0)
+ return make_atom(aix);
+ else
+ return THE_NON_VALUE;
}
Eterm
@@ -346,32 +357,24 @@ am_atom_put(const char* name, int len)
int atom_table_size(void)
{
int ret;
-#ifdef ERTS_SMP
int lock = !ERTS_IS_CRASH_DUMPING;
if (lock)
atom_read_lock();
-#endif
ret = erts_atom_table.entries;
-#ifdef ERTS_SMP
if (lock)
atom_read_unlock();
-#endif
return ret;
}
int atom_table_sz(void)
{
int ret;
-#ifdef ERTS_SMP
int lock = !ERTS_IS_CRASH_DUMPING;
if (lock)
atom_read_lock();
-#endif
ret = index_table_sz(&erts_atom_table);
-#ifdef ERTS_SMP
if (lock)
atom_read_unlock();
-#endif
return ret;
}
@@ -399,19 +402,15 @@ erts_atom_get(const char *name, int len, Eterm* ap, ErtsAtomEncoding enc)
void
erts_atom_get_text_space_sizes(Uint *reserved, Uint *used)
{
-#ifdef ERTS_SMP
int lock = !ERTS_IS_CRASH_DUMPING;
if (lock)
atom_read_lock();
-#endif
if (reserved)
*reserved = reserved_atom_space;
if (used)
*used = atom_space;
-#ifdef ERTS_SMP
if (lock)
atom_read_unlock();
-#endif
}
void
@@ -420,16 +419,17 @@ init_atom_table(void)
HashFunctions f;
int i;
Atom a;
- erts_smp_rwmtx_opt_t rwmtx_opt = ERTS_SMP_RWMTX_OPT_DEFAULT_INITER;
+ erts_rwmtx_opt_t rwmtx_opt = ERTS_RWMTX_OPT_DEFAULT_INITER;
- rwmtx_opt.type = ERTS_SMP_RWMTX_TYPE_FREQUENT_READ;
- rwmtx_opt.lived = ERTS_SMP_RWMTX_LONG_LIVED;
+ rwmtx_opt.type = ERTS_RWMTX_TYPE_FREQUENT_READ;
+ rwmtx_opt.lived = ERTS_RWMTX_LONG_LIVED;
#ifdef ERTS_ATOM_PUT_OPS_STAT
- erts_smp_atomic_init_nob(&atom_put_ops, 0);
+ erts_atomic_init_nob(&atom_put_ops, 0);
#endif
- erts_smp_rwmtx_init_opt(&atom_table_lock, &rwmtx_opt, "atom_tab");
+ erts_rwmtx_init_opt(&atom_table_lock, &rwmtx_opt, "atom_tab", NIL,
+ ERTS_LOCK_FLAGS_PROPERTY_STATIC | ERTS_LOCK_FLAGS_CATEGORY_GENERIC);
f.hash = (H_FUN) atom_hash;
f.cmp = (HCMP_FUN) atom_cmp;
@@ -452,7 +452,7 @@ init_atom_table(void)
/* Ordinary atoms */
for (i = 0; erl_atom_names[i] != 0; i++) {
int ix;
- a.len = strlen(erl_atom_names[i]);
+ a.len = sys_strlen(erl_atom_names[i]);
a.latin1_chars = a.len;
a.name = (byte*)erl_atom_names[i];
a.slot.index = i;
@@ -467,6 +467,9 @@ init_atom_table(void)
atom_space -= a.len;
atom_tab(ix)->name = (byte*)erl_atom_names[i];
}
+
+ /* Hide am_ErtsSecretAtom */
+ hash_erase(&erts_atom_table.htable, atom_tab(atom_val(am_ErtsSecretAtom)));
}
void
@@ -483,3 +486,9 @@ dump_atoms(fmtfn_t to, void *to_arg)
}
}
}
+
+Uint
+erts_get_atom_limit(void)
+{
+ return erts_atom_table.limit;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 09:02:32 +0000