зеркало из https://github.com/github/ruby.git
86 строки
2.3 KiB
C
86 строки
2.3 KiB
C
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#ifndef RUBY_GC_H
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#define RUBY_GC_H 1
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#if defined(__x86_64__) && defined(__GNUC__)
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#define SET_MACHINE_STACK_END(p) __asm__("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__("movl\t%%esp, %0" : "=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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/* 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 void
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rb_gc_debug_indent(void)
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{
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printf("%*s", ruby_gc_debug_indent, "");
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}
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static 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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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(); 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_UNLESS_NULL(ptr) if(RTEST(ptr)){rb_gc_mark(ptr);}
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#define RUBY_FREE_UNLESS_NULL(ptr) if(ptr){ruby_xfree(ptr);}
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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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#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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#endif /* RUBY_GC_H */
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