diff options
Diffstat (limited to 'internal/gc.h')
| -rw-r--r-- | internal/gc.h | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/internal/gc.h b/internal/gc.h index 8fb219a0c4..dc55de1c03 100644 --- a/internal/gc.h +++ b/internal/gc.h @@ -15,6 +15,124 @@ #include "internal/compilers.h" /* for __has_attribute */ #include "ruby/ruby.h" /* for rb_event_flag_t */ +#if defined(__x86_64__) && !defined(_ILP32) && defined(__GNUC__) +#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("movq\t%%rsp, %0" : "=r" (*(p))) +#elif defined(__i386) && defined(__GNUC__) +#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("movl\t%%esp, %0" : "=r" (*(p))) +#elif (defined(__powerpc__) || defined(__powerpc64__)) && defined(__GNUC__) && !defined(_AIX) && !defined(__APPLE__) // Not Apple is NEEDED to unbreak ppc64 build on Darwin. Don't ask. +#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("mr\t%0, %%r1" : "=r" (*(p))) +#elif (defined(__powerpc__) || defined(__powerpc64__)) && defined(__GNUC__) && defined(_AIX) +#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("mr %0,1" : "=r" (*(p))) +#elif defined(__POWERPC__) && defined(__APPLE__) // Darwin ppc and ppc64 +#define SET_MACHINE_STACK_END(p) __asm__ volatile("mr %0, r1" : "=r" (*(p))) +#elif defined(__aarch64__) && defined(__GNUC__) +#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("mov\t%0, sp" : "=r" (*(p))) +#else +NOINLINE(void rb_gc_set_stack_end(VALUE **stack_end_p)); +#define SET_MACHINE_STACK_END(p) rb_gc_set_stack_end(p) +#define USE_CONSERVATIVE_STACK_END +#endif + +#define RB_GC_SAVE_MACHINE_CONTEXT(th) \ + do { \ + FLUSH_REGISTER_WINDOWS; \ + setjmp((th)->ec->machine.regs); \ + SET_MACHINE_STACK_END(&(th)->ec->machine.stack_end); \ + } while (0) + +/* for GC debug */ + +#ifndef RUBY_MARK_FREE_DEBUG +#define RUBY_MARK_FREE_DEBUG 0 +#endif + +#if RUBY_MARK_FREE_DEBUG +extern int ruby_gc_debug_indent; + +static inline void +rb_gc_debug_indent(void) +{ + ruby_debug_printf("%*s", ruby_gc_debug_indent, ""); +} + +static inline void +rb_gc_debug_body(const char *mode, const char *msg, int st, void *ptr) +{ + if (st == 0) { + ruby_gc_debug_indent--; + } + rb_gc_debug_indent(); + ruby_debug_printf("%s: %s %s (%p)\n", mode, st ? "->" : "<-", msg, ptr); + + if (st) { + ruby_gc_debug_indent++; + } + + fflush(stdout); +} + +#define RUBY_MARK_ENTER(msg) rb_gc_debug_body("mark", (msg), 1, ptr) +#define RUBY_MARK_LEAVE(msg) rb_gc_debug_body("mark", (msg), 0, ptr) +#define RUBY_FREE_ENTER(msg) rb_gc_debug_body("free", (msg), 1, ptr) +#define RUBY_FREE_LEAVE(msg) rb_gc_debug_body("free", (msg), 0, ptr) +#define RUBY_GC_INFO rb_gc_debug_indent(), ruby_debug_printf + +#else +#define RUBY_MARK_ENTER(msg) +#define RUBY_MARK_LEAVE(msg) +#define RUBY_FREE_ENTER(msg) +#define RUBY_FREE_LEAVE(msg) +#define RUBY_GC_INFO if(0)printf +#endif + +#define RUBY_MARK_MOVABLE_UNLESS_NULL(ptr) do { \ + VALUE markobj = (ptr); \ + if (RTEST(markobj)) {rb_gc_mark_movable(markobj);} \ +} while (0) +#define RUBY_MARK_UNLESS_NULL(ptr) do { \ + VALUE markobj = (ptr); \ + if (RTEST(markobj)) {rb_gc_mark(markobj);} \ +} while (0) +#define RUBY_FREE_UNLESS_NULL(ptr) if(ptr){ruby_xfree(ptr);(ptr)=NULL;} + +#if STACK_GROW_DIRECTION > 0 +# define STACK_UPPER(x, a, b) (a) +#elif STACK_GROW_DIRECTION < 0 +# define STACK_UPPER(x, a, b) (b) +#else +RUBY_EXTERN int ruby_stack_grow_direction; +int ruby_get_stack_grow_direction(volatile VALUE *addr); +# define stack_growup_p(x) ( \ + (ruby_stack_grow_direction ? \ + ruby_stack_grow_direction : \ + ruby_get_stack_grow_direction(x)) > 0) +# define STACK_UPPER(x, a, b) (stack_growup_p(x) ? (a) : (b)) +#endif + +/* + STACK_GROW_DIR_DETECTION is used with STACK_DIR_UPPER. + + On most normal systems, stacks grow from high address to lower address. In + this case, STACK_DIR_UPPER(a, b) will return (b), but on exotic systems where + the stack grows UP (from low address to high address), it will return (a). +*/ + +#if STACK_GROW_DIRECTION +#define STACK_GROW_DIR_DETECTION +#define STACK_DIR_UPPER(a,b) STACK_UPPER(0, (a), (b)) +#else +#define STACK_GROW_DIR_DETECTION VALUE stack_grow_dir_detection +#define STACK_DIR_UPPER(a,b) STACK_UPPER(&stack_grow_dir_detection, (a), (b)) +#endif +#define IS_STACK_DIR_UPPER() STACK_DIR_UPPER(1,0) + +const char *rb_obj_info(VALUE obj); +const char *rb_raw_obj_info(char *const buff, const size_t buff_size, VALUE obj); + + +struct rb_thread_struct; +size_t rb_size_pool_slot_size(unsigned char pool_id); + struct rb_execution_context_struct; /* in vm_core.h */ struct rb_objspace; /* in vm_core.h */ @@ -137,6 +255,27 @@ void rb_gc_mark_and_move(VALUE *ptr); } while (0) RUBY_SYMBOL_EXPORT_BEGIN +/* exports for objspace module */ +size_t rb_objspace_data_type_memsize(VALUE obj); +void rb_objspace_reachable_objects_from(VALUE obj, void (func)(VALUE, void *), void *data); +void rb_objspace_reachable_objects_from_root(void (func)(const char *category, VALUE, void *), void *data); +int rb_objspace_markable_object_p(VALUE obj); +int rb_objspace_internal_object_p(VALUE obj); +int rb_objspace_marked_object_p(VALUE obj); + +void rb_objspace_each_objects( + int (*callback)(void *start, void *end, size_t stride, void *data), + void *data); + +void rb_objspace_each_objects_without_setup( + int (*callback)(void *, void *, size_t, void *), + void *data); + +size_t rb_gc_obj_slot_size(VALUE obj); + +VALUE rb_gc_disable_no_rest(void); + + /* gc.c (export) */ const char *rb_objspace_data_type_name(VALUE obj); VALUE rb_wb_protected_newobj_of(VALUE, VALUE, size_t); |