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-rw-r--r--erts/emulator/hipe/hipe_gc.c180
1 files changed, 168 insertions, 12 deletions
diff --git a/erts/emulator/hipe/hipe_gc.c b/erts/emulator/hipe/hipe_gc.c
index d0619a0609..1a4a4c7952 100644
--- a/erts/emulator/hipe/hipe_gc.c
+++ b/erts/emulator/hipe/hipe_gc.c
@@ -1,7 +1,7 @@
/*
* %CopyrightBegin%
*
- * Copyright Ericsson AB 2004-2016. All Rights Reserved.
+ * Copyright Ericsson AB 2004-2017. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
@@ -38,7 +38,7 @@ Eterm *fullsweep_nstack(Process *p, Eterm *n_htop)
/* known nstack walk state */
Eterm *nsp;
Eterm *nsp_end;
- const struct sdesc *sdesc;
+ const struct hipe_sdesc *sdesc;
unsigned int sdesc_size;
unsigned long ra;
unsigned int i;
@@ -46,6 +46,8 @@ Eterm *fullsweep_nstack(Process *p, Eterm *n_htop)
/* arch-specific nstack walk state */
struct nstack_walk_state walk_state;
+ ASSERT(!p->hipe.gc_is_unsafe);
+
if (!p->hipe.nstack) {
ASSERT(!p->hipe.nsp && !p->hipe.nstend);
return n_htop;
@@ -89,7 +91,7 @@ Eterm *fullsweep_nstack(Process *p, Eterm *n_htop)
ASSERT(is_boxed(val));
*nsp_i = val;
} else if (!erts_is_literal(gval, ptr)) {
- MOVE_BOXED(ptr, val, n_htop, nsp_i);
+ move_boxed(&ptr, val, &n_htop, nsp_i);
}
} else if (is_list(gval)) {
Eterm *ptr = list_val(gval);
@@ -97,8 +99,8 @@ Eterm *fullsweep_nstack(Process *p, Eterm *n_htop)
if (IS_MOVED_CONS(val)) {
*nsp_i = ptr[1];
} else if (!erts_is_literal(gval, ptr)) {
- ASSERT(within(ptr, p));
- MOVE_CONS(ptr, val, n_htop, nsp_i);
+ ASSERT(erts_dbg_within_proc(ptr, p, NULL));
+ move_cons(&ptr, val, &n_htop, nsp_i);
}
}
}
@@ -121,7 +123,7 @@ void gensweep_nstack(Process *p, Eterm **ptr_old_htop, Eterm **ptr_n_htop)
/* known nstack walk state */
Eterm *nsp;
Eterm *nsp_end;
- const struct sdesc *sdesc;
+ const struct hipe_sdesc *sdesc;
unsigned int sdesc_size;
unsigned long ra;
unsigned int i;
@@ -136,6 +138,8 @@ void gensweep_nstack(Process *p, Eterm **ptr_old_htop, Eterm **ptr_n_htop)
char *mature;
Uint mature_size;
+ ASSERT(!p->hipe.gc_is_unsafe);
+
if (!p->hipe.nstack) {
ASSERT(!p->hipe.nsp && !p->hipe.nstend);
return;
@@ -202,10 +206,10 @@ void gensweep_nstack(Process *p, Eterm **ptr_old_htop, Eterm **ptr_n_htop)
ASSERT(is_boxed(val));
*nsp_i = val;
} else if (ErtsInArea(ptr, mature, mature_size)) {
- MOVE_BOXED(ptr, val, old_htop, nsp_i);
+ move_boxed(&ptr, val, &old_htop, nsp_i);
} else if (ErtsInYoungGen(gval, ptr, oh, oh_size)) {
- ASSERT(within(ptr, p));
- MOVE_BOXED(ptr, val, n_htop, nsp_i);
+ ASSERT(erts_dbg_within_proc(ptr, p, NULL));
+ move_boxed(&ptr, val, &n_htop, nsp_i);
}
} else if (is_list(gval)) {
Eterm *ptr = list_val(gval);
@@ -213,10 +217,10 @@ void gensweep_nstack(Process *p, Eterm **ptr_old_htop, Eterm **ptr_n_htop)
if (IS_MOVED_CONS(val)) {
*nsp_i = ptr[1];
} else if (ErtsInArea(ptr, mature, mature_size)) {
- MOVE_CONS(ptr, val, old_htop, nsp_i);
+ move_cons(&ptr, val, &old_htop, nsp_i);
} else if (ErtsInYoungGen(gval, ptr, oh, oh_size)) {
- ASSERT(within(ptr, p));
- MOVE_CONS(ptr, val, n_htop, nsp_i);
+ ASSERT(erts_dbg_within_proc(ptr, p, NULL));
+ move_cons(&ptr, val, &n_htop, nsp_i);
}
}
}
@@ -233,3 +237,155 @@ void gensweep_nstack(Process *p, Eterm **ptr_old_htop, Eterm **ptr_n_htop)
}
abort();
}
+
+Eterm *sweep_literals_nstack(Process *p, Eterm *old_htop, char *area,
+ Uint area_size)
+{
+ /* known nstack walk state */
+ Eterm *nsp;
+ Eterm *nsp_end;
+ const struct hipe_sdesc *sdesc;
+ /* arch-specific nstack walk state */
+ struct nstack_walk_state walk_state;
+
+ ASSERT(!p->hipe.gc_is_unsafe);
+
+ if (!p->hipe.nstack) {
+ ASSERT(!p->hipe.nsp && !p->hipe.nstend);
+ return old_htop;
+ }
+ if (!nstack_walk_init_check(p))
+ return old_htop;
+
+ ASSERT(p->hipe.nsp && p->hipe.nstend);
+ nsp = nstack_walk_nsp_begin(p);
+ nsp_end = nstack_walk_nsp_end(p);
+ sdesc = nstack_walk_init_sdesc_ignore_trap(p, &walk_state);
+
+ while (!nstack_walk_nsp_reached_end(nsp, nsp_end)) {
+ unsigned long ra;
+ unsigned sdesc_size = nstack_walk_frame_size(sdesc);
+ unsigned i = 0;
+ unsigned mask = sdesc->livebits[0];
+ for (;;) {
+ if (mask & 1) {
+ Eterm *nsp_i = nstack_walk_frame_index(nsp, i);
+ Eterm gval = *nsp_i;
+ if (is_boxed(gval)) {
+ Eterm *ptr = boxed_val(gval);
+ Eterm val = *ptr;
+ if (IS_MOVED_BOXED(val)) {
+ ASSERT(is_boxed(val));
+ *nsp_i = val;
+ } else if (ErtsInArea(ptr, area, area_size)) {
+ move_boxed(&ptr, val, &old_htop, nsp_i);
+ }
+ } else if (is_list(gval)) {
+ Eterm *ptr = list_val(gval);
+ Eterm val = *ptr;
+ if (IS_MOVED_CONS(val)) {
+ *nsp_i = ptr[1];
+ } else if (ErtsInArea(ptr, area, area_size)) {
+ move_cons(&ptr, val, &old_htop, nsp_i);
+ }
+ }
+ }
+ if (++i >= sdesc_size)
+ break;
+ if (i & 31)
+ mask >>= 1;
+ else
+ mask = sdesc->livebits[i >> 5];
+ }
+ ra = nstack_walk_frame_ra(nsp, sdesc);
+ if (ra == (unsigned long)nbif_stack_trap_ra)
+ ra = (unsigned long)p->hipe.ngra;
+ sdesc = hipe_find_sdesc(ra);
+ nsp = nstack_walk_next_frame(nsp, sdesc_size);
+ }
+ return old_htop;
+}
+
+int
+nstack_any_heap_ref_ptrs(Process *rp, char* mod_start, Uint mod_size)
+{
+ Eterm *nsp;
+ Eterm *nsp_end;
+ const struct hipe_sdesc *sdesc;
+ /* arch-specific nstack walk state */
+ struct nstack_walk_state walk_state;
+
+ ASSERT(!rp->hipe.gc_is_unsafe);
+
+ if (!rp->hipe.nstack || !nstack_walk_init_check(rp)) return 0;
+ ASSERT(rp->hipe.nsp && rp->hipe.nstend);
+ nsp = nstack_walk_nsp_begin(rp);
+ nsp_end = nstack_walk_nsp_end(rp);
+ sdesc = nstack_walk_init_sdesc_ignore_trap(rp, &walk_state);
+
+ while (!nstack_walk_nsp_reached_end(nsp, nsp_end)) {
+ unsigned long ra;
+ unsigned sdesc_size = nstack_walk_frame_size(sdesc);
+ unsigned i = 0;
+ unsigned mask = sdesc->livebits[0];
+ for (;;) {
+ if (mask & 1) {
+ Eterm *nsp_i = nstack_walk_frame_index(nsp, i);
+ Eterm val = *nsp_i;
+ switch (primary_tag(val)) {
+ case TAG_PRIMARY_BOXED:
+ case TAG_PRIMARY_LIST:
+ if (ErtsInArea(val, mod_start, mod_size)) {
+ return 1;
+ }
+ break;
+ }
+ }
+ if (++i >= sdesc_size)
+ break;
+ if (i & 31)
+ mask >>= 1;
+ else
+ mask = sdesc->livebits[i >> 5];
+ }
+ ra = nstack_walk_frame_ra(nsp, sdesc);
+ if (ra == (unsigned long)nbif_stack_trap_ra)
+ ra = (unsigned long)rp->hipe.ngra;
+ sdesc = hipe_find_sdesc(ra);
+ nsp = nstack_walk_next_frame(nsp, sdesc_size);
+ }
+ return 0;
+}
+
+int
+nstack_any_cps_in_segment(Process *p, char* seg_start, Uint seg_size)
+{
+ Eterm *nsp;
+ Eterm *nsp_end;
+ const struct hipe_sdesc *sdesc;
+ /* arch-specific nstack walk state */
+ struct nstack_walk_state walk_state;
+
+ if (!p->hipe.nstack || !nstack_walk_init_check(p))
+ return 0;
+ ASSERT(p->hipe.nsp && p->hipe.nstend);
+ nsp = nstack_walk_nsp_begin(p);
+ nsp_end = nstack_walk_nsp_end(p);
+ sdesc = nstack_walk_init_sdesc_ignore_trap(p, &walk_state);
+
+ /* Check the topmost frame */
+ if (ErtsInArea(sdesc->bucket.hvalue, seg_start, seg_size))
+ return 1;
+
+ while (!nstack_walk_nsp_reached_end(nsp, nsp_end)) {
+ unsigned sdesc_size = nstack_walk_frame_size(sdesc);
+ unsigned long ra = nstack_walk_frame_ra(nsp, sdesc);
+ if (ra == (unsigned long)nbif_stack_trap_ra)
+ ra = (unsigned long)p->hipe.ngra;
+ if (ErtsInArea(ra, seg_start, seg_size))
+ return 1;
+ sdesc = hipe_find_sdesc(ra);
+ nsp = nstack_walk_next_frame(nsp, sdesc_size);
+ }
+ return 0;
+}
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