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-rw-r--r--erts/emulator/beam/erl_alloc_util.c54
1 files changed, 49 insertions, 5 deletions
diff --git a/erts/emulator/beam/erl_alloc_util.c b/erts/emulator/beam/erl_alloc_util.c
index 2995f2f822..163244237d 100644
--- a/erts/emulator/beam/erl_alloc_util.c
+++ b/erts/emulator/beam/erl_alloc_util.c
@@ -907,7 +907,9 @@ erts_alcu_literal_32_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size,
#elif defined(ARCH_64) && defined(ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION)
-/* Used by literal allocator that has its own mmapper (super carrier) */
+/* For allocators that have their own mmapper (super carrier),
+ * like literal_alloc and exec_alloc on amd64
+ */
void*
erts_alcu_mmapper_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
{
@@ -948,6 +950,50 @@ erts_alcu_mmapper_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size,
}
#endif /* ARCH_64 && ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION */
+#if defined(ERTS_ALC_A_EXEC) && !defined(ERTS_HAVE_EXEC_MMAPPER)
+
+/*
+ * For exec_alloc on non-amd64 that just need memory with PROT_EXEC
+ */
+void*
+erts_alcu_exec_mseg_alloc(Allctr_t *allctr, Uint *size_p, Uint flags)
+{
+ void* res = erts_alcu_mseg_alloc(allctr, size_p, flags);
+
+ if (res) {
+ int r = mprotect(res, *size_p, PROT_EXEC | PROT_READ | PROT_WRITE);
+ ASSERT(r == 0); (void)r;
+ }
+ return res;
+}
+
+void*
+erts_alcu_exec_mseg_realloc(Allctr_t *allctr, void *seg,
+ Uint old_size, Uint *new_size_p)
+{
+ void *res;
+
+ if (seg && old_size) {
+ int r = mprotect(seg, old_size, PROT_READ | PROT_WRITE);
+ ASSERT(r == 0); (void)r;
+ }
+ res = erts_alcu_mseg_realloc(allctr, seg, old_size, new_size_p);
+ if (res) {
+ int r = mprotect(res, *new_size_p, PROT_EXEC | PROT_READ | PROT_WRITE);
+ ASSERT(r == 0); (void)r;
+ }
+ return res;
+}
+
+void
+erts_alcu_exec_mseg_dealloc(Allctr_t *allctr, void *seg, Uint size, Uint flags)
+{
+ int r = mprotect(seg, size, PROT_READ | PROT_WRITE);
+ ASSERT(r == 0); (void)r;
+ erts_alcu_mseg_dealloc(allctr, seg, size, flags);
+}
+#endif /* ERTS_ALC_A_EXEC && !ERTS_HAVE_EXEC_MMAPPER */
+
#endif /* HAVE_ERTS_MSEG */
void*
@@ -1361,6 +1407,7 @@ fix_cpool_alloc(Allctr_t *allctr, ErtsAlcType_t type, Uint size)
&& type <= ERTS_ALC_N_MAX_A_FIXED_SIZE);
fix = &allctr->fix[type - ERTS_ALC_N_MIN_A_FIXED_SIZE];
+ ASSERT(size == fix->type_size);
res = fix->list;
if (res) {
@@ -1372,8 +1419,6 @@ fix_cpool_alloc(Allctr_t *allctr, ErtsAlcType_t type, Uint size)
fix_cpool_check_shrink(allctr, type, fix, NULL);
return res;
}
- if (size < 2*sizeof(UWord))
- size += sizeof(UWord);
if (size >= allctr->sbc_threshold) {
Block_t *blk;
blk = create_carrier(allctr, size, CFLG_SBC);
@@ -1493,6 +1538,7 @@ fix_nocpool_alloc(Allctr_t *allctr, ErtsAlcType_t type, Uint size)
&& type <= ERTS_ALC_N_MAX_A_FIXED_SIZE);
fix = &allctr->fix[type - ERTS_ALC_N_MIN_A_FIXED_SIZE];
+ ASSERT(size == fix->type_size);
ERTS_DBG_CHK_FIX_LIST(allctr, fix, ix, 1);
fix->u.nocpool.used++;
@@ -1515,8 +1561,6 @@ fix_nocpool_alloc(Allctr_t *allctr, ErtsAlcType_t type, Uint size)
ERTS_DBG_CHK_FIX_LIST(allctr, fix, ix, 0);
return res;
}
- if (size < 2*sizeof(UWord))
- size += sizeof(UWord);
if (fix->u.nocpool.limit < fix->u.nocpool.used)
fix->u.nocpool.limit = fix->u.nocpool.used;
if (fix->u.nocpool.max_used < fix->u.nocpool.used)