mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
140 lines
4.3 KiB
C
140 lines
4.3 KiB
C
#ifndef RUBY_GC_H
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#define RUBY_GC_H 1
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#include "ruby/ruby.h"
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#if defined(__x86_64__) && !defined(_ILP32) && defined(__GNUC__)
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#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("movq\t%%rsp, %0" : "=r" (*(p)))
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#elif defined(__i386) && defined(__GNUC__)
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#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("movl\t%%esp, %0" : "=r" (*(p)))
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#elif defined(__powerpc64__) && defined(__GNUC__)
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#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("mr\t%0, %%r1" : "=r" (*(p)))
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#elif defined(__aarch64__) && defined(__GNUC__)
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#define SET_MACHINE_STACK_END(p) __asm__ __volatile__ ("mov\t%0, sp" : "=r" (*(p)))
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#else
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NOINLINE(void rb_gc_set_stack_end(VALUE **stack_end_p));
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#define SET_MACHINE_STACK_END(p) rb_gc_set_stack_end(p)
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#define USE_CONSERVATIVE_STACK_END
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#endif
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#define RB_GC_SAVE_MACHINE_CONTEXT(th) \
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do { \
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FLUSH_REGISTER_WINDOWS; \
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setjmp((th)->ec->machine.regs); \
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SET_MACHINE_STACK_END(&(th)->ec->machine.stack_end); \
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} while (0)
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/* for GC debug */
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#ifndef RUBY_MARK_FREE_DEBUG
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#define RUBY_MARK_FREE_DEBUG 0
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#endif
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#if RUBY_MARK_FREE_DEBUG
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extern int ruby_gc_debug_indent;
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static inline void
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rb_gc_debug_indent(void)
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{
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ruby_debug_printf("%*s", ruby_gc_debug_indent, "");
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}
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static inline void
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rb_gc_debug_body(const char *mode, const char *msg, int st, void *ptr)
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{
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if (st == 0) {
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ruby_gc_debug_indent--;
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}
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rb_gc_debug_indent();
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ruby_debug_printf("%s: %s %s (%p)\n", mode, st ? "->" : "<-", msg, ptr);
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if (st) {
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ruby_gc_debug_indent++;
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}
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fflush(stdout);
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}
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#define RUBY_MARK_ENTER(msg) rb_gc_debug_body("mark", (msg), 1, ptr)
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#define RUBY_MARK_LEAVE(msg) rb_gc_debug_body("mark", (msg), 0, ptr)
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#define RUBY_FREE_ENTER(msg) rb_gc_debug_body("free", (msg), 1, ptr)
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#define RUBY_FREE_LEAVE(msg) rb_gc_debug_body("free", (msg), 0, ptr)
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#define RUBY_GC_INFO rb_gc_debug_indent(), ruby_debug_printf
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#else
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#define RUBY_MARK_ENTER(msg)
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#define RUBY_MARK_LEAVE(msg)
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#define RUBY_FREE_ENTER(msg)
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#define RUBY_FREE_LEAVE(msg)
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#define RUBY_GC_INFO if(0)printf
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#endif
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#define RUBY_MARK_MOVABLE_UNLESS_NULL(ptr) do { \
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VALUE markobj = (ptr); \
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if (RTEST(markobj)) {rb_gc_mark_movable(markobj);} \
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} while (0)
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#define RUBY_MARK_UNLESS_NULL(ptr) do { \
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VALUE markobj = (ptr); \
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if (RTEST(markobj)) {rb_gc_mark(markobj);} \
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} while (0)
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#define RUBY_FREE_UNLESS_NULL(ptr) if(ptr){ruby_xfree(ptr);(ptr)=NULL;}
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#if STACK_GROW_DIRECTION > 0
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# define STACK_UPPER(x, a, b) (a)
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#elif STACK_GROW_DIRECTION < 0
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# define STACK_UPPER(x, a, b) (b)
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#else
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RUBY_EXTERN int ruby_stack_grow_direction;
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int ruby_get_stack_grow_direction(volatile VALUE *addr);
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# define stack_growup_p(x) ( \
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(ruby_stack_grow_direction ? \
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ruby_stack_grow_direction : \
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ruby_get_stack_grow_direction(x)) > 0)
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# define STACK_UPPER(x, a, b) (stack_growup_p(x) ? (a) : (b))
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#endif
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/*
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STACK_GROW_DIR_DETECTION is used with STACK_DIR_UPPER.
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On most normal systems, stacks grow from high address to lower address. In
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this case, STACK_DIR_UPPER(a, b) will return (b), but on exotic systems where
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the stack grows UP (from low address to high address), it will return (a).
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*/
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#if STACK_GROW_DIRECTION
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#define STACK_GROW_DIR_DETECTION
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#define STACK_DIR_UPPER(a,b) STACK_UPPER(0, (a), (b))
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#else
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#define STACK_GROW_DIR_DETECTION VALUE stack_grow_dir_detection
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#define STACK_DIR_UPPER(a,b) STACK_UPPER(&stack_grow_dir_detection, (a), (b))
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#endif
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#define IS_STACK_DIR_UPPER() STACK_DIR_UPPER(1,0)
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const char *rb_obj_info(VALUE obj);
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const char *rb_raw_obj_info(char *buff, const int buff_size, VALUE obj);
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VALUE rb_gc_disable_no_rest(void);
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struct rb_thread_struct;
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RUBY_SYMBOL_EXPORT_BEGIN
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/* exports for objspace module */
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size_t rb_objspace_data_type_memsize(VALUE obj);
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void rb_objspace_reachable_objects_from(VALUE obj, void (func)(VALUE, void *), void *data);
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void rb_objspace_reachable_objects_from_root(void (func)(const char *category, VALUE, void *), void *data);
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int rb_objspace_markable_object_p(VALUE obj);
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int rb_objspace_internal_object_p(VALUE obj);
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int rb_objspace_marked_object_p(VALUE obj);
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int rb_objspace_garbage_object_p(VALUE obj);
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void rb_objspace_each_objects(
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int (*callback)(void *start, void *end, size_t stride, void *data),
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void *data);
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void rb_objspace_each_objects_without_setup(
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int (*callback)(void *, void *, size_t, void *),
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void *data);
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RUBY_SYMBOL_EXPORT_END
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#endif /* RUBY_GC_H */
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