Use MMTK VM space (mmtk#56)

Merge with mmtk/mmtk-core#802 and
mmtk/julia#12

Author: qinsoon

mmtk/Cargo.lock

@@ -10,7 +10,7 @@ edition = "2018"
 [package.metadata.julia]
 # Our CI matches the following line and extract mmtk/julia. If this line is updated, please check ci yaml files and make sure it works.
 julia_repo = "https://github.com/mmtk/julia.git"
-julia_version = "95bc54ab673fcdf11604324638f597f32158a22f"
+julia_version = "eb407eb68ea976df72c8e1cd6ec8607ff8d98fa5"
 
 [lib]
 crate-type = ["staticlib", "rlib", "dylib"]
@@ -29,7 +29,7 @@ lazy_static = "1.1"
 # - change branch
 # - change repo name
 # But other changes including adding/removing whitespaces in commented lines may break the CI.
-mmtk = { git = "https://github.com/mmtk/mmtk-core.git", rev = "ed347f19f230dfec8c05a24032f1529e9079478c" }
+mmtk = { git = "https://github.com/mmtk/mmtk-core.git", rev = "e309f9351dff9cd0c8f3f590002c6edafd158c82" }
 # Uncomment the following to build locally
 # mmtk = { path = "../repos/mmtk-core" }
 log = {version = "0.4", features = ["max_level_trace", "release_max_level_off"] }
@@ -46,7 +46,7 @@ semispace = []
 gencopy = []
 pageprotect = []
 malloc_counted_size = ["mmtk/malloc_counted_size"]
-immix = ["malloc_counted_size", "mmtk/immix_non_moving", "mmtk/immix_smaller_block", "scan_obj_c"]
+immix = ["malloc_counted_size", "mmtk/immix_non_moving", "mmtk/immix_smaller_block", "scan_obj_c", "mmtk/vm_space"]
 marksweep = ["malloc_counted_size", "scan_obj_c"]
 # FIXME update and use rust object scanner as default for immix
 scan_obj_c = []

mmtk/Cargo.toml

@@ -57,6 +57,8 @@ extern void modify_check(void* ref);
 extern int object_is_managed_by_mmtk(void* addr);
 extern void runtime_panic(void);
 
+extern void mmtk_set_vm_space(void* addr, size_t size);
+
 // Write barriers
 extern void mmtk_memory_region_copy(MMTk_Mutator mutator, void* src_obj, void* src_addr, void* dst_obj, void* dst_addr, size_t size);
 extern void mmtk_object_reference_write_post(MMTk_Mutator mutator, const void* src, const void* target);

mmtk/api/mmtk.h

@@ -447,6 +447,14 @@ pub extern "C" fn runtime_panic() {
     panic!("Panicking at runtime!")
 }
 
+#[no_mangle]
+#[allow(mutable_transmutes)]
+pub extern "C" fn mmtk_set_vm_space(start: Address, size: usize) {
+    let mmtk: &mmtk::MMTK<JuliaVM> = &SINGLETON;
+    let mmtk_mut: &mut mmtk::MMTK<JuliaVM> = unsafe { std::mem::transmute(mmtk) };
+    memory_manager::lazy_init_vm_space(mmtk_mut, start, size);
+}
+
 #[no_mangle]
 pub extern "C" fn mmtk_memory_region_copy(
     mutator: *mut Mutator<JuliaVM>,