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authorNiclas Axelsson <[email protected]>2011-03-11 12:12:40 +0100
committerNiclas Axelsson <[email protected]>2011-03-11 12:15:31 +0100
commitb9a94fef63f79f5a5a476b284104039336113d5b (patch)
treeb2e45f7c024abae3477a708ecdd2b989897fee8f /erts/emulator/hipe
parentcdc5de779b4d1007a961d8f99c9280c460142777 (diff)
parent0c16b0931feb67641b91d973dbf8f5756384c19a (diff)
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Merge branch 'pg/hipe-remove-constants-pool' into dev
* pg/hipe-remove-constants-pool: Remove hipe constants pool OTP-9128
Diffstat (limited to 'erts/emulator/hipe')
-rw-r--r--erts/emulator/hipe/hipe_bif0.c50
-rw-r--r--erts/emulator/hipe/hipe_bif0.h4
-rw-r--r--erts/emulator/hipe/hipe_bif2.c13
-rw-r--r--erts/emulator/hipe/hipe_bif2.tab1
-rw-r--r--erts/emulator/hipe/hipe_gc.c1
5 files changed, 7 insertions, 62 deletions
diff --git a/erts/emulator/hipe/hipe_bif0.c b/erts/emulator/hipe/hipe_bif0.c
index 2a877d8ace..4205b05831 100644
--- a/erts/emulator/hipe/hipe_bif0.c
+++ b/erts/emulator/hipe/hipe_bif0.c
@@ -450,52 +450,13 @@ BIF_RETTYPE hipe_bifs_alloc_data_2(BIF_ALIST_2)
}
/*
- * Memory area for constant Erlang terms.
- *
- * These constants must not be forwarded by the gc.
- * Therefore, the gc needs to be able to distinguish between
- * collectible objects and constants. Unfortunately, an Erlang
- * process' collectible objects are scattered around in two
- * heaps and a list of message buffers, so testing "is X a
- * collectible object?" can be expensive.
- *
- * Instead, constants are placed in a single contiguous area,
- * which allows for an inexpensive "is X a constant?" test.
- *
- * XXX: Allow this area to be grown.
+ * Statistics on hipe constants: size of HiPE constants, in words.
*/
-
-/* not static, needed by garbage collector */
-Eterm *hipe_constants_start = NULL;
-Eterm *hipe_constants_next = NULL;
-static unsigned constants_avail_words = 0;
-#define CONSTANTS_BYTES (1536*1024*sizeof(Eterm)) /* 1.5 M words */
-
-static Eterm *constants_alloc(unsigned nwords)
-{
- Eterm *next;
-
- /* initialise at the first call */
- if ((next = hipe_constants_next) == NULL) {
- next = (Eterm*)erts_alloc(ERTS_ALC_T_HIPE, CONSTANTS_BYTES);
- hipe_constants_start = next;
- hipe_constants_next = next;
- constants_avail_words = CONSTANTS_BYTES / sizeof(Eterm);
- }
- if (nwords > constants_avail_words) {
- fprintf(stderr, "Native code constants pool depleted!\r\n");
- /* Must terminate immediately. erl_exit() seems to
- continue running some code which then SIGSEGVs. */
- exit(1);
- }
- constants_avail_words -= nwords;
- hipe_constants_next = next + nwords;
- return next;
-}
+unsigned int hipe_constants_size = 0;
BIF_RETTYPE hipe_bifs_constants_size_0(BIF_ALIST_0)
{
- BIF_RET(make_small(hipe_constants_next - hipe_constants_start));
+ BIF_RET(make_small(hipe_constants_size));
}
/*
@@ -526,14 +487,17 @@ static void *const_term_alloc(void *tmpl)
{
Eterm obj;
Uint size;
+ Uint alloc_size;
Eterm *hp;
struct const_term *p;
obj = (Eterm)tmpl;
ASSERT(is_not_immed(obj));
size = size_object(obj);
+ alloc_size = size + (offsetof(struct const_term, mem)/sizeof(Eterm));
+ hipe_constants_size += alloc_size;
- p = (struct const_term*)constants_alloc(size + (offsetof(struct const_term, mem)/sizeof(Eterm)));
+ p = (struct const_term*)erts_alloc(ERTS_ALC_T_HIPE, alloc_size * sizeof(Eterm));
/* I have absolutely no idea if having a private 'off_heap'
works or not. _Some_ off_heap object is required for
diff --git a/erts/emulator/hipe/hipe_bif0.h b/erts/emulator/hipe/hipe_bif0.h
index ed27d5616a..a283ffe803 100644
--- a/erts/emulator/hipe/hipe_bif0.h
+++ b/erts/emulator/hipe/hipe_bif0.h
@@ -26,10 +26,6 @@
extern Uint *hipe_bifs_find_pc_from_mfa(Eterm mfa);
-/* shared with ggc.c -- NOT an official API */
-extern Eterm *hipe_constants_start;
-extern Eterm *hipe_constants_next;
-
extern void hipe_mfa_info_table_init(void);
extern void *hipe_get_remote_na(Eterm m, Eterm f, unsigned int a);
extern Eterm hipe_find_na_or_make_stub(Process*, Eterm, Eterm, Eterm);
diff --git a/erts/emulator/hipe/hipe_bif2.c b/erts/emulator/hipe/hipe_bif2.c
index f992b758be..e5a236ce69 100644
--- a/erts/emulator/hipe/hipe_bif2.c
+++ b/erts/emulator/hipe/hipe_bif2.c
@@ -33,7 +33,6 @@
#include "big.h"
#include "hipe_debug.h"
#include "hipe_mode_switch.h"
-#include "hipe_bif0.h" /* hipe_constants_{start,next} */
#include "hipe_arch.h"
#include "hipe_stack.h"
@@ -124,18 +123,6 @@ BIF_RETTYPE hipe_bifs_show_term_1(BIF_ALIST_1)
BIF_RET(am_true);
}
-BIF_RETTYPE hipe_bifs_show_literals_0(BIF_ALIST_0)
-{
- Eterm *p;
-
- p = hipe_constants_start;
- for (; p < hipe_constants_next; ++p)
- printf("0x%0*lx: 0x%0*lx\r\n",
- 2*(int)sizeof(long), (unsigned long)p,
- 2*(int)sizeof(long), *p);
- BIF_RET(am_true);
-}
-
BIF_RETTYPE hipe_bifs_in_native_0(BIF_ALIST_0)
{
BIF_RET(am_false);
diff --git a/erts/emulator/hipe/hipe_bif2.tab b/erts/emulator/hipe/hipe_bif2.tab
index d8d627e370..9578b69e27 100644
--- a/erts/emulator/hipe/hipe_bif2.tab
+++ b/erts/emulator/hipe/hipe_bif2.tab
@@ -26,7 +26,6 @@ bif hipe_bifs:show_nstack/1
bif hipe_bifs:nstack_used_size/0
bif hipe_bifs:show_pcb/1
bif hipe_bifs:show_term/1
-bif hipe_bifs:show_literals/0
bif hipe_bifs:in_native/0
bif hipe_bifs:modeswitch_debug_on/0
bif hipe_bifs:modeswitch_debug_off/0
diff --git a/erts/emulator/hipe/hipe_gc.c b/erts/emulator/hipe/hipe_gc.c
index 6c9e1d9ba7..6dd296d027 100644
--- a/erts/emulator/hipe/hipe_gc.c
+++ b/erts/emulator/hipe/hipe_gc.c
@@ -28,7 +28,6 @@
#include "hipe_stack.h"
#include "hipe_gc.h"
-#include "hipe_bif0.h" /* for hipe_constants_{start,next} */
Eterm *fullsweep_nstack(Process *p, Eterm *n_htop)
{