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-rw-r--r--erts/doc/src/erl.xml5
-rw-r--r--erts/emulator/beam/atom.c12
-rw-r--r--erts/emulator/beam/atom.h21
-rw-r--r--erts/emulator/beam/erl_init.c22
-rw-r--r--erts/emulator/beam/erl_vm.h2
-rw-r--r--erts/emulator/beam/external.c7
-rw-r--r--erts/etc/common/erlexec.c1
7 files changed, 54 insertions, 16 deletions
diff --git a/erts/doc/src/erl.xml b/erts/doc/src/erl.xml
index b01d187b01..73d15c33d7 100644
--- a/erts/doc/src/erl.xml
+++ b/erts/doc/src/erl.xml
@@ -798,6 +798,11 @@
Valid range is 4-8192 kilowords. The default stack size
is OS dependent.</p>
</item>
+ <tag><c><![CDATA[+t size]]></c></tag>
+ <item>
+ <marker id="+t"></marker>
+ <p>Set the maximum number of atoms the VM can handle. Default is 1048576.</p>
+ </item>
<tag><c><![CDATA[+T Level]]></c></tag>
<item>
<marker id="+T"></marker>
diff --git a/erts/emulator/beam/atom.c b/erts/emulator/beam/atom.c
index dfc3cde6a7..e2a79d6e4f 100644
--- a/erts/emulator/beam/atom.c
+++ b/erts/emulator/beam/atom.c
@@ -1,19 +1,19 @@
/*
* %CopyrightBegin%
- *
- * Copyright Ericsson AB 1996-2009. All Rights Reserved.
- *
+ *
+ * Copyright Ericsson AB 1996-2010. All Rights Reserved.
+ *
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
- *
+ *
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
- *
+ *
* %CopyrightEnd%
*/
@@ -322,7 +322,7 @@ init_atom_table(void)
text_list = NULL;
erts_index_init(ERTS_ALC_T_ATOM_TABLE, &erts_atom_table,
- "atom_tab", ATOM_SIZE, ATOM_LIMIT, f);
+ "atom_tab", ATOM_SIZE, erts_atom_table_size, f);
more_atom_space();
/* Ordinary atoms */
diff --git a/erts/emulator/beam/atom.h b/erts/emulator/beam/atom.h
index e7e0dc440d..cb245a87b1 100644
--- a/erts/emulator/beam/atom.h
+++ b/erts/emulator/beam/atom.h
@@ -1,19 +1,19 @@
/*
* %CopyrightBegin%
- *
- * Copyright Ericsson AB 1996-2009. All Rights Reserved.
- *
+ *
+ * Copyright Ericsson AB 1996-2010. All Rights Reserved.
+ *
* The contents of this file are subject to the Erlang Public License,
* Version 1.1, (the "License"); you may not use this file except in
* compliance with the License. You should have received a copy of the
* Erlang Public License along with this software. If not, it can be
* retrieved online at http://www.erlang.org/.
- *
+ *
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
- *
+ *
* %CopyrightEnd%
*/
@@ -28,6 +28,17 @@
#define MAX_ATOM_LENGTH 255
#define ATOM_LIMIT (1024*1024)
+#define MIN_ATOM_TABLE_SIZE 8192
+
+#ifndef ARCH_32
+/* Internal atom cache needs MAX_ATOM_TABLE_SIZE to be less than an
+ unsigned 32 bit integer. See external.c(erts_encode_ext_dist_header_setup)
+ for more details. */
+#define MAX_ATOM_TABLE_SIZE ((MAX_ATOM_INDEX + 1 < (1UL << 32)) ? MAX_ATOM_INDEX + 1 : (1UL << 32))
+#else
+#define MAX_ATOM_TABLE_SIZE (MAX_ATOM_INDEX + 1)
+#endif
+
/*
* Atom entry.
diff --git a/erts/emulator/beam/erl_init.c b/erts/emulator/beam/erl_init.c
index bdf888eaff..17cf3b9597 100644
--- a/erts/emulator/beam/erl_init.c
+++ b/erts/emulator/beam/erl_init.c
@@ -119,6 +119,8 @@ int erts_disable_tolerant_timeofday; /* Time correction can be disabled it is
* not and/or it is too slow.
*/
+int erts_atom_table_size = ATOM_LIMIT; /* Maximum number of atoms */
+
int erts_modified_timing_level;
int erts_no_crash_dump = 0; /* Use -d to suppress crash dump. */
@@ -569,6 +571,10 @@ void erts_usage(void)
erts_fprintf(stderr, " schedulers online (n2), valid range for both\n");
erts_fprintf(stderr, " numbers are [1-%d]\n",
ERTS_MAX_NO_OF_SCHEDULERS);
+ erts_fprintf(stderr, "-t size set the maximum number of atoms the "
+ "emulator can handle\n");
+ erts_fprintf(stderr, " valid range is [%d-%d]\n",
+ MIN_ATOM_TABLE_SIZE, MAX_ATOM_TABLE_SIZE);
erts_fprintf(stderr, "-T number set modified timing level,\n");
erts_fprintf(stderr, " valid range is [0-%d]\n",
ERTS_MODIFIED_TIMING_LEVELS-1);
@@ -1140,6 +1146,22 @@ erl_start(int argc, char **argv)
}
break;
}
+ case 't':
+ /* set atom table size */
+ arg = get_arg(argv[i]+2, argv[i+1], &i);
+ errno = 0;
+ erts_atom_table_size = strtol(arg, NULL, 10);
+ if (errno != 0 ||
+ erts_atom_table_size < MIN_ATOM_TABLE_SIZE ||
+ erts_atom_table_size > MAX_ATOM_TABLE_SIZE) {
+ erts_fprintf(stderr, "bad atom table size %s\n", arg);
+ erts_usage();
+ }
+ VERBOSE(DEBUG_SYSTEM,
+ ("setting maximum number of atoms to %d\n",
+ erts_atom_table_size));
+ break;
+
case 'T' :
arg = get_arg(argv[i]+2, argv[i+1], &i);
errno = 0;
diff --git a/erts/emulator/beam/erl_vm.h b/erts/emulator/beam/erl_vm.h
index 5b0d3c2bfa..50b3e5b61c 100644
--- a/erts/emulator/beam/erl_vm.h
+++ b/erts/emulator/beam/erl_vm.h
@@ -181,6 +181,8 @@ extern int num_instructions; /* Number of instruction in opc[]. */
extern int H_MIN_SIZE; /* minimum (heap + stack) */
extern int BIN_VH_MIN_SIZE; /* minimum virtual (bin) heap */
+extern int erts_atom_table_size;/* Atom table size */
+
#define ORIG_CREATION 0
/* macros for extracting bytes from uint16's */
diff --git a/erts/emulator/beam/external.c b/erts/emulator/beam/external.c
index 24887b3dea..b011d4c0de 100644
--- a/erts/emulator/beam/external.c
+++ b/erts/emulator/beam/external.c
@@ -271,11 +271,8 @@ erts_encode_ext_dist_header_size(ErtsAtomCacheMap *acmp)
byte *erts_encode_ext_dist_header_setup(byte *ctl_ext, ErtsAtomCacheMap *acmp)
{
-#ifndef ARCH_32
-#if ATOM_LIMIT >= (1UL << 32)
-#error "ATOM_LIMIT too large for interal atom cache update instructions. New instructions needed."
-#endif
-#endif
+ /* Maximum number of atom must be less than the maximum of a 32 bits
+ unsigned integer. Check is done in erl_init.c, erl_start function. */
if (!acmp)
return ctl_ext;
else {
diff --git a/erts/etc/common/erlexec.c b/erts/etc/common/erlexec.c
index 0ad26aeea7..f79f5cc978 100644
--- a/erts/etc/common/erlexec.c
+++ b/erts/etc/common/erlexec.c
@@ -794,6 +794,7 @@ int main(int argc, char **argv)
case 'i':
case 'P':
case 'S':
+ case 't':
case 'T':
case 'R':
case 'W':
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 21:29:26 +0000