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-rw-r--r--erts/emulator/sys/common/erl_mmap.c29
1 files changed, 16 insertions, 13 deletions
diff --git a/erts/emulator/sys/common/erl_mmap.c b/erts/emulator/sys/common/erl_mmap.c
index 60b32e8115..52041fd03e 100644
--- a/erts/emulator/sys/common/erl_mmap.c
+++ b/erts/emulator/sys/common/erl_mmap.c
@@ -1394,15 +1394,17 @@ alloc_desc_insert_free_seg(ErtsFreeSegMap *map, char* start, char* end)
*/
#if ERTS_HAVE_OS_MMAP
- ptr = os_mmap(mmap_state.desc.new_area_hint, ERTS_PAGEALIGNED_SIZE, 0);
- if (ptr) {
- mmap_state.desc.new_area_hint = ptr+ERTS_PAGEALIGNED_SIZE;
- ERTS_MMAP_SIZE_OS_INC(ERTS_PAGEALIGNED_SIZE);
- add_free_desc_area(ptr, ptr+ERTS_PAGEALIGNED_SIZE);
- desc = alloc_desc();
- ERTS_MMAP_ASSERT(desc);
- insert_free_seg(map, desc, start, end);
- return 0;
+ if (!mmap_state.no_os_mmap) {
+ ptr = os_mmap(mmap_state.desc.new_area_hint, ERTS_PAGEALIGNED_SIZE, 0);
+ if (ptr) {
+ mmap_state.desc.new_area_hint = ptr+ERTS_PAGEALIGNED_SIZE;
+ ERTS_MMAP_SIZE_OS_INC(ERTS_PAGEALIGNED_SIZE);
+ add_free_desc_area(ptr, ptr+ERTS_PAGEALIGNED_SIZE);
+ desc = alloc_desc();
+ ERTS_MMAP_ASSERT(desc);
+ insert_free_seg(map, desc, start, end);
+ return 0;
+ }
}
#endif
@@ -2166,6 +2168,7 @@ erts_mmap_init(ErtsMMapInit *init)
mmap_state.sa.bot = NULL;
mmap_state.sua.top = NULL;
mmap_state.no_os_mmap = 0;
+ mmap_state.supercarrier = 0;
}
else {
size_t desc_size;
@@ -2185,10 +2188,10 @@ erts_mmap_init(ErtsMMapInit *init)
mmap_state.sa.bot += desc_size;
mmap_state.sa.bot = (char *) ERTS_SUPERALIGNED_CEILING(mmap_state.sa.bot);
mmap_state.sa.top = mmap_state.sa.bot;
- mmap_state.sua.top = (char *) ERTS_SUPERALIGNED_FLOOR(end);
+ mmap_state.sua.top = end;
mmap_state.sua.bot = mmap_state.sua.top;
- mmap_state.size.os.used += (UWord) (mmap_state.sa.bot - start);
+ mmap_state.size.supercarrier.used.total += (UWord) (mmap_state.sa.bot - start);
mmap_state.desc.free_list = NULL;
mmap_state.desc.reserved = 0;
@@ -2201,7 +2204,7 @@ erts_mmap_init(ErtsMMapInit *init)
* into the super carrier...
*/
mmap_state.sua.top -= ERTS_PAGEALIGNED_SIZE;
- mmap_state.size.os.used += ERTS_PAGEALIGNED_SIZE;
+ mmap_state.size.supercarrier.used.total += ERTS_PAGEALIGNED_SIZE;
#ifdef ERTS_HAVE_OS_PHYSICAL_MEMORY_RESERVATION
if (!virtual_map || os_reserve_physical(mmap_state.sua.top, ERTS_PAGEALIGNED_SIZE))
#endif
@@ -2209,7 +2212,7 @@ erts_mmap_init(ErtsMMapInit *init)
mmap_state.desc.reserved += (end - mmap_state.sua.top) / sizeof(ErtsFreeSegDesc);
}
- mmap_state.size.supercarrier.total = (UWord) (mmap_state.sua.top - mmap_state.sa.bot);
+ mmap_state.size.supercarrier.total = (UWord) (mmap_state.sua.top - start);
/*
* Area before (and after) super carrier