зеркало из https://github.com/github/ruby.git
730 строки
19 KiB
C
730 строки
19 KiB
C
/**********************************************************************
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vm_core.h -
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$Author$
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created at: 04/01/01 19:41:38 JST
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Copyright (C) 2004-2007 Koichi Sasada
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**********************************************************************/
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#ifndef RUBY_VM_CORE_H
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#define RUBY_VM_CORE_H
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#define RUBY_VM_THREAD_MODEL 2
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#include "ruby/ruby.h"
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#include "ruby/st.h"
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#include "node.h"
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#include "debug.h"
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#include "vm_opts.h"
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#include "id.h"
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#include "method.h"
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#if defined(_WIN32)
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#include "thread_win32.h"
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#elif defined(HAVE_PTHREAD_H)
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#include "thread_pthread.h"
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#else
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#error "unsupported thread type"
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#endif
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#ifndef ENABLE_VM_OBJSPACE
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#ifdef _WIN32
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/*
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* TODO: object space independent st_table.
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* socklist needs st_table in rb_w32_sysinit(), before object space
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* initialization.
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* It is too early now to change st_hash_type, since it breaks binary
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* compatibility.
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*/
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#define ENABLE_VM_OBJSPACE 0
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#else
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#define ENABLE_VM_OBJSPACE 1
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#endif
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#endif
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#include <setjmp.h>
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#include <signal.h>
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#ifndef NSIG
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# define NSIG (_SIGMAX + 1) /* For QNX */
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#endif
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#define RUBY_NSIG NSIG
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#ifdef HAVE_STDARG_PROTOTYPES
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#include <stdarg.h>
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#define va_init_list(a,b) va_start(a,b)
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#else
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#include <varargs.h>
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#define va_init_list(a,b) va_start(a)
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#endif
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#if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) && defined(SA_SIGINFO) && !defined(__NetBSD__)
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#define USE_SIGALTSTACK
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#endif
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/*****************/
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/* configuration */
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/*****************/
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/* gcc ver. check */
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#if defined(__GNUC__) && __GNUC__ >= 2
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#if OPT_TOKEN_THREADED_CODE
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#if OPT_DIRECT_THREADED_CODE
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#undef OPT_DIRECT_THREADED_CODE
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#endif
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#endif
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#else /* defined(__GNUC__) && __GNUC__ >= 2 */
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/* disable threaded code options */
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#if OPT_DIRECT_THREADED_CODE
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#undef OPT_DIRECT_THREADED_CODE
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#endif
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#if OPT_TOKEN_THREADED_CODE
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#undef OPT_TOKEN_THREADED_CODE
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#endif
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#endif
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/* call threaded code */
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#if OPT_CALL_THREADED_CODE
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#if OPT_DIRECT_THREADED_CODE
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#undef OPT_DIRECT_THREADED_CODE
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#endif /* OPT_DIRECT_THREADED_CODE */
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#if OPT_STACK_CACHING
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#undef OPT_STACK_CACHING
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#endif /* OPT_STACK_CACHING */
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#endif /* OPT_CALL_THREADED_CODE */
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/* likely */
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#if __GNUC__ >= 3
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#define LIKELY(x) (__builtin_expect((x), 1))
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#define UNLIKELY(x) (__builtin_expect((x), 0))
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#else /* __GNUC__ >= 3 */
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#define LIKELY(x) (x)
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#define UNLIKELY(x) (x)
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#endif /* __GNUC__ >= 3 */
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#if __GNUC__ >= 3
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#define UNINITIALIZED_VAR(x) x = x
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#else
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#define UNINITIALIZED_VAR(x) x
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#endif
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typedef unsigned long rb_num_t;
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/* iseq data type */
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struct iseq_compile_data_ensure_node_stack;
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typedef struct rb_compile_option_struct rb_compile_option_t;
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struct iseq_inline_cache_entry {
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VALUE ic_vmstat;
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VALUE ic_class;
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union {
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VALUE value;
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rb_method_entry_t *method;
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long index;
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} ic_value;
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};
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#if 1
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#define GetCoreDataFromValue(obj, type, ptr) do { \
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ptr = (type*)DATA_PTR(obj); \
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} while (0)
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#else
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#define GetCoreDataFromValue(obj, type, ptr) Data_Get_Struct(obj, type, ptr)
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#endif
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#define GetISeqPtr(obj, ptr) \
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GetCoreDataFromValue(obj, rb_iseq_t, ptr)
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struct rb_iseq_struct;
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struct rb_iseq_struct {
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/***************/
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/* static data */
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/***************/
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enum iseq_type {
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ISEQ_TYPE_TOP,
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ISEQ_TYPE_METHOD,
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ISEQ_TYPE_BLOCK,
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ISEQ_TYPE_CLASS,
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ISEQ_TYPE_RESCUE,
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ISEQ_TYPE_ENSURE,
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ISEQ_TYPE_EVAL,
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ISEQ_TYPE_MAIN,
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ISEQ_TYPE_DEFINED_GUARD,
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} type; /* instruction sequence type */
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VALUE name; /* String: iseq name */
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VALUE filename; /* file information where this sequence from */
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VALUE filepath; /* real file path or nil */
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VALUE *iseq; /* iseq (insn number and operands) */
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VALUE *iseq_encoded; /* encoded iseq */
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unsigned long iseq_size;
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VALUE mark_ary; /* Array: includes operands which should be GC marked */
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VALUE coverage; /* coverage array */
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unsigned short line_no;
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/* insn info, must be freed */
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struct iseq_insn_info_entry *insn_info_table;
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size_t insn_info_size;
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ID *local_table; /* must free */
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int local_table_size;
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/* method, class frame: sizeof(vars) + 1, block frame: sizeof(vars) */
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int local_size;
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struct iseq_inline_cache_entry *ic_entries;
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int ic_size;
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/**
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* argument information
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*
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* def m(a1, a2, ..., aM, # mandatory
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* b1=(...), b2=(...), ..., bN=(...), # optional
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* *c, # rest
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* d1, d2, ..., dO, # post
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* &e) # block
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* =>
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*
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* argc = M
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* arg_rest = M+N+1 // or -1 if no rest arg
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* arg_opts = N
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* arg_opts_tbl = [ (N entries) ]
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* arg_post_len = O // 0 if no post arguments
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* arg_post_start = M+N+2
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* arg_block = M+N + 1 + O + 1 // -1 if no block arg
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* arg_simple = 0 if not simple arguments.
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* = 1 if no opt, rest, post, block.
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* = 2 if ambiguos block parameter ({|a|}).
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* arg_size = argument size.
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*/
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int argc;
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int arg_simple;
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int arg_rest;
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int arg_block;
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int arg_opts;
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int arg_post_len;
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int arg_post_start;
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int arg_size;
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VALUE *arg_opt_table;
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size_t stack_max; /* for stack overflow check */
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/* catch table */
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struct iseq_catch_table_entry *catch_table;
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int catch_table_size;
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/* for child iseq */
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struct rb_iseq_struct *parent_iseq;
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struct rb_iseq_struct *local_iseq;
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/****************/
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/* dynamic data */
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/****************/
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VALUE self;
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VALUE orig; /* non-NULL if its data have origin */
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/* block inlining */
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/*
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* NODE *node;
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* void *special_block_builder;
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* void *cached_special_block_builder;
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* VALUE cached_special_block;
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*/
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/* klass/module nest information stack (cref) */
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NODE *cref_stack;
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VALUE klass;
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/* misc */
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ID defined_method_id; /* for define_method */
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/* used at compile time */
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struct iseq_compile_data *compile_data;
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};
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enum ruby_special_exceptions {
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ruby_error_reenter,
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ruby_error_nomemory,
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ruby_error_sysstack,
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ruby_special_error_count
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};
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#define GetVMPtr(obj, ptr) \
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GetCoreDataFromValue(obj, rb_vm_t, ptr)
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#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
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struct rb_objspace;
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void rb_objspace_free(struct rb_objspace *);
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#endif
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typedef struct rb_vm_struct {
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VALUE self;
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rb_global_vm_lock_t gvl;
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struct rb_thread_struct *main_thread;
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struct rb_thread_struct *running_thread;
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st_table *living_threads;
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VALUE thgroup_default;
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int running;
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int thread_abort_on_exception;
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unsigned long trace_flag;
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volatile int sleeper;
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/* object management */
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VALUE mark_object_ary;
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VALUE special_exceptions[ruby_special_error_count];
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/* load */
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VALUE top_self;
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VALUE load_path;
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VALUE loaded_features;
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struct st_table *loading_table;
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/* signal */
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struct {
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VALUE cmd;
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int safe;
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} trap_list[RUBY_NSIG];
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/* hook */
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rb_event_hook_t *event_hooks;
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int src_encoding_index;
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VALUE verbose, debug, progname;
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VALUE coverages;
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struct unlinked_method_entry_list_entry *unlinked_method_entry_list;
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#if defined(ENABLE_VM_OBJSPACE) && ENABLE_VM_OBJSPACE
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struct rb_objspace *objspace;
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#endif
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} rb_vm_t;
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typedef struct {
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VALUE *pc; /* cfp[0] */
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VALUE *sp; /* cfp[1] */
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VALUE *bp; /* cfp[2] */
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rb_iseq_t *iseq; /* cfp[3] */
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VALUE flag; /* cfp[4] */
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VALUE self; /* cfp[5] / block[0] */
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VALUE *lfp; /* cfp[6] / block[1] */
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VALUE *dfp; /* cfp[7] / block[2] */
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rb_iseq_t *block_iseq; /* cfp[8] / block[3] */
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VALUE proc; /* cfp[9] / block[4] */
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const rb_method_entry_t *me;/* cfp[10] */
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} rb_control_frame_t;
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typedef struct rb_block_struct {
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VALUE self; /* share with method frame if it's only block */
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VALUE *lfp; /* share with method frame if it's only block */
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VALUE *dfp; /* share with method frame if it's only block */
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rb_iseq_t *iseq;
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VALUE proc;
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} rb_block_t;
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#define GetThreadPtr(obj, ptr) \
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GetCoreDataFromValue(obj, rb_thread_t, ptr)
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enum rb_thread_status {
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THREAD_TO_KILL,
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THREAD_RUNNABLE,
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THREAD_STOPPED,
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THREAD_STOPPED_FOREVER,
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THREAD_KILLED
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};
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typedef RUBY_JMP_BUF rb_jmpbuf_t;
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struct rb_vm_tag {
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rb_jmpbuf_t buf;
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VALUE tag;
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VALUE retval;
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struct rb_vm_tag *prev;
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};
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struct rb_vm_protect_tag {
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struct rb_vm_protect_tag *prev;
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};
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struct rb_unblock_callback {
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rb_unblock_function_t *func;
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void *arg;
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};
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struct rb_mutex_struct;
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typedef struct rb_thread_struct {
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VALUE self;
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rb_vm_t *vm;
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/* execution information */
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VALUE *stack; /* must free, must mark */
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unsigned long stack_size;
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rb_control_frame_t *cfp;
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int safe_level;
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int raised_flag;
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VALUE last_status; /* $? */
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/* passing state */
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int state;
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/* for rb_iterate */
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const rb_block_t *passed_block;
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/* for bmethod */
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const rb_method_entry_t *passed_me;
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/* for load(true) */
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VALUE top_self;
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VALUE top_wrapper;
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/* eval env */
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rb_block_t *base_block;
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VALUE *local_lfp;
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VALUE local_svar;
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/* thread control */
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rb_thread_id_t thread_id;
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enum rb_thread_status status;
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int priority;
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int slice;
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native_thread_data_t native_thread_data;
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void *blocking_region_buffer;
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VALUE thgroup;
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VALUE value;
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VALUE errinfo;
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VALUE thrown_errinfo;
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int exec_signal;
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int interrupt_flag;
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rb_thread_lock_t interrupt_lock;
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struct rb_unblock_callback unblock;
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VALUE locking_mutex;
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struct rb_mutex_struct *keeping_mutexes;
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int transition_for_lock;
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struct rb_vm_tag *tag;
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struct rb_vm_protect_tag *protect_tag;
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int parse_in_eval;
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int mild_compile_error;
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/* storage */
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st_table *local_storage;
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struct rb_thread_struct *join_list_next;
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struct rb_thread_struct *join_list_head;
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VALUE first_proc;
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VALUE first_args;
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VALUE (*first_func)(ANYARGS);
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/* for GC */
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VALUE *machine_stack_start;
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VALUE *machine_stack_end;
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size_t machine_stack_maxsize;
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#ifdef __ia64
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VALUE *machine_register_stack_start;
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VALUE *machine_register_stack_end;
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size_t machine_register_stack_maxsize;
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#endif
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jmp_buf machine_regs;
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int mark_stack_len;
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/* statistics data for profiler */
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VALUE stat_insn_usage;
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/* tracer */
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rb_event_hook_t *event_hooks;
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rb_event_flag_t event_flags;
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int tracing;
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/* fiber */
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VALUE fiber;
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VALUE root_fiber;
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rb_jmpbuf_t root_jmpbuf;
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/* misc */
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int method_missing_reason;
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int abort_on_exception;
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#ifdef USE_SIGALTSTACK
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void *altstack;
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#endif
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} rb_thread_t;
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/* iseq.c */
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#if defined __GNUC__ && __GNUC__ >= 4
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#pragma GCC visibility push(default)
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#endif
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VALUE rb_iseq_new(NODE*, VALUE, VALUE, VALUE, VALUE, enum iseq_type);
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VALUE rb_iseq_new_top(NODE *node, VALUE name, VALUE filename, VALUE filepath, VALUE parent);
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VALUE rb_iseq_new_main(NODE *node, VALUE filename, VALUE filepath);
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VALUE rb_iseq_new_with_bopt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE, enum iseq_type, VALUE);
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VALUE rb_iseq_new_with_opt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE, enum iseq_type, const rb_compile_option_t*);
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VALUE rb_iseq_compile(VALUE src, VALUE file, VALUE line);
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VALUE rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE filepath, VALUE line, VALUE opt);
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VALUE rb_iseq_disasm(VALUE self);
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int rb_iseq_disasm_insn(VALUE str, VALUE *iseqval, size_t pos, rb_iseq_t *iseq, VALUE child);
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const char *ruby_node_name(int node);
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int rb_iseq_first_lineno(rb_iseq_t *iseq);
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RUBY_EXTERN VALUE rb_cISeq;
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RUBY_EXTERN VALUE rb_cRubyVM;
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RUBY_EXTERN VALUE rb_cEnv;
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RUBY_EXTERN VALUE rb_mRubyVMFrozenCore;
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#if defined __GNUC__ && __GNUC__ >= 4
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#pragma GCC visibility pop
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#endif
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/* each thread has this size stack : 128KB */
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#define RUBY_VM_THREAD_STACK_SIZE (128 * 1024)
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#define GetProcPtr(obj, ptr) \
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GetCoreDataFromValue(obj, rb_proc_t, ptr)
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typedef struct {
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rb_block_t block;
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VALUE envval; /* for GC mark */
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VALUE blockprocval;
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int safe_level;
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int is_from_method;
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int is_lambda;
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} rb_proc_t;
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#define GetEnvPtr(obj, ptr) \
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GetCoreDataFromValue(obj, rb_env_t, ptr)
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typedef struct {
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VALUE *env;
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int env_size;
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int local_size;
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VALUE prev_envval; /* for GC mark */
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rb_block_t block;
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} rb_env_t;
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#define GetBindingPtr(obj, ptr) \
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GetCoreDataFromValue(obj, rb_binding_t, ptr)
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typedef struct {
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VALUE env;
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VALUE filename;
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unsigned short line_no;
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} rb_binding_t;
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/* used by compile time and send insn */
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#define VM_CALL_ARGS_SPLAT_BIT (0x01 << 1)
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#define VM_CALL_ARGS_BLOCKARG_BIT (0x01 << 2)
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#define VM_CALL_FCALL_BIT (0x01 << 3)
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#define VM_CALL_VCALL_BIT (0x01 << 4)
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#define VM_CALL_TAILCALL_BIT (0x01 << 5)
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#define VM_CALL_TAILRECURSION_BIT (0x01 << 6)
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#define VM_CALL_SUPER_BIT (0x01 << 7)
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#define VM_CALL_OPT_SEND_BIT (0x01 << 8)
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enum vm_special_object_type {
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VM_SPECIAL_OBJECT_VMCORE = 1,
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VM_SPECIAL_OBJECT_CBASE,
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VM_SPECIAL_OBJECT_CONST_BASE,
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};
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#define VM_FRAME_MAGIC_METHOD 0x11
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#define VM_FRAME_MAGIC_BLOCK 0x21
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#define VM_FRAME_MAGIC_CLASS 0x31
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#define VM_FRAME_MAGIC_TOP 0x41
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#define VM_FRAME_MAGIC_FINISH 0x51
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#define VM_FRAME_MAGIC_CFUNC 0x61
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#define VM_FRAME_MAGIC_PROC 0x71
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#define VM_FRAME_MAGIC_IFUNC 0x81
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#define VM_FRAME_MAGIC_EVAL 0x91
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#define VM_FRAME_MAGIC_LAMBDA 0xa1
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#define VM_FRAME_MAGIC_MASK_BITS 8
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#define VM_FRAME_MAGIC_MASK (~(~0<<VM_FRAME_MAGIC_MASK_BITS))
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#define VM_FRAME_TYPE(cfp) ((cfp)->flag & VM_FRAME_MAGIC_MASK)
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/* other frame flag */
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#define VM_FRAME_FLAG_PASSED 0x0100
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#define RUBYVM_CFUNC_FRAME_P(cfp) \
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(VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC)
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/* inline cache */
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typedef struct iseq_inline_cache_entry *IC;
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extern VALUE ruby_vm_global_state_version;
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#define GET_VM_STATE_VERSION() (ruby_vm_global_state_version)
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#define INC_VM_STATE_VERSION() \
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(ruby_vm_global_state_version = (ruby_vm_global_state_version+1) & 0x8fffffff)
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void rb_vm_change_state(void);
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typedef VALUE CDHASH;
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#ifndef FUNC_FASTCALL
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#define FUNC_FASTCALL(x) x
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#endif
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typedef rb_control_frame_t *
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(FUNC_FASTCALL(*rb_insn_func_t))(rb_thread_t *, rb_control_frame_t *);
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#define GC_GUARDED_PTR(p) ((VALUE)((VALUE)(p) | 0x01))
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#define GC_GUARDED_PTR_REF(p) ((void *)(((VALUE)p) & ~0x03))
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#define GC_GUARDED_PTR_P(p) (((VALUE)p) & 0x01)
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#define RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp) (cfp+1)
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#define RUBY_VM_NEXT_CONTROL_FRAME(cfp) (cfp-1)
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#define RUBY_VM_END_CONTROL_FRAME(th) \
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((rb_control_frame_t *)((th)->stack + (th)->stack_size))
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#define RUBY_VM_VALID_CONTROL_FRAME_P(cfp, ecfp) \
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((void *)(ecfp) > (void *)(cfp))
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#define RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp) \
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(!RUBY_VM_VALID_CONTROL_FRAME_P((cfp), RUBY_VM_END_CONTROL_FRAME(th)))
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#define RUBY_VM_IFUNC_P(ptr) (BUILTIN_TYPE(ptr) == T_NODE)
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#define RUBY_VM_NORMAL_ISEQ_P(ptr) \
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(ptr && !RUBY_VM_IFUNC_P(ptr))
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#define RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp) ((rb_block_t *)(&(cfp)->self))
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#define RUBY_VM_GET_CFP_FROM_BLOCK_PTR(b) \
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((rb_control_frame_t *)((VALUE *)(b) - 5))
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/* VM related object allocate functions */
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VALUE rb_thread_alloc(VALUE klass);
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VALUE rb_proc_alloc(VALUE klass);
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/* for debug */
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extern void rb_vmdebug_stack_dump_raw(rb_thread_t *, rb_control_frame_t *);
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#define SDR() rb_vmdebug_stack_dump_raw(GET_THREAD(), GET_THREAD()->cfp)
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#define SDR2(cfp) rb_vmdebug_stack_dump_raw(GET_THREAD(), (cfp))
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void rb_vm_bugreport(void);
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/* functions about thread/vm execution */
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#if defined __GNUC__ && __GNUC__ >= 4
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#pragma GCC visibility push(default)
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#endif
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VALUE rb_iseq_eval(VALUE iseqval);
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VALUE rb_iseq_eval_main(VALUE iseqval);
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void rb_enable_interrupt(void);
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void rb_disable_interrupt(void);
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#if defined __GNUC__ && __GNUC__ >= 4
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#pragma GCC visibility pop
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#endif
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int rb_thread_method_id_and_class(rb_thread_t *th, ID *idp, VALUE *klassp);
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VALUE rb_vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self,
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int argc, const VALUE *argv, const rb_block_t *blockptr);
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VALUE rb_vm_make_proc(rb_thread_t *th, const rb_block_t *block, VALUE klass);
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VALUE rb_vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp);
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void rb_vm_gvl_destroy(rb_vm_t *vm);
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void rb_thread_start_timer_thread(void);
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void rb_thread_stop_timer_thread(void);
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void rb_thread_reset_timer_thread(void);
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void *rb_thread_call_with_gvl(void *(*func)(void *), void *data1);
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int ruby_thread_has_gvl_p(void);
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VALUE rb_make_backtrace(void);
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typedef int rb_backtrace_iter_func(void *, VALUE, int, VALUE);
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int rb_backtrace_each(rb_backtrace_iter_func *iter, void *arg);
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rb_control_frame_t *rb_vm_get_ruby_level_next_cfp(rb_thread_t *th, rb_control_frame_t *cfp);
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int rb_vm_get_sourceline(const rb_control_frame_t *);
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VALUE rb_name_err_mesg_new(VALUE obj, VALUE mesg, VALUE recv, VALUE method);
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NOINLINE(void rb_gc_save_machine_context(rb_thread_t *));
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#define sysstack_error GET_VM()->special_exceptions[ruby_error_sysstack]
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/* for thread */
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#if RUBY_VM_THREAD_MODEL == 2
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RUBY_EXTERN rb_thread_t *ruby_current_thread;
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extern rb_vm_t *ruby_current_vm;
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#define GET_VM() ruby_current_vm
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#define GET_THREAD() ruby_current_thread
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#define rb_thread_set_current_raw(th) (void)(ruby_current_thread = (th))
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#define rb_thread_set_current(th) do { \
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rb_thread_set_current_raw(th); \
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th->vm->running_thread = th; \
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} while (0)
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#else
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#error "unsupported thread model"
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#endif
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#define RUBY_VM_SET_INTERRUPT(th) ((th)->interrupt_flag |= 0x02)
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#define RUBY_VM_SET_TIMER_INTERRUPT(th) ((th)->interrupt_flag |= 0x01)
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#define RUBY_VM_SET_FINALIZER_INTERRUPT(th) ((th)->interrupt_flag |= 0x04)
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#define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & 0x02)
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int rb_signal_buff_size(void);
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void rb_signal_exec(rb_thread_t *th, int sig);
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void rb_threadptr_check_signal(rb_thread_t *mth);
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void rb_threadptr_signal_raise(rb_thread_t *th, int sig);
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void rb_threadptr_signal_exit(rb_thread_t *th);
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void rb_threadptr_execute_interrupts(rb_thread_t *);
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void rb_thread_lock_unlock(rb_thread_lock_t *);
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void rb_thread_lock_destroy(rb_thread_lock_t *);
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#define RUBY_VM_CHECK_INTS_TH(th) do { \
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if (UNLIKELY(th->interrupt_flag)) { \
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rb_threadptr_execute_interrupts(th); \
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} \
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} while (0)
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#define RUBY_VM_CHECK_INTS() \
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RUBY_VM_CHECK_INTS_TH(GET_THREAD())
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/* tracer */
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void
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rb_threadptr_exec_event_hooks(rb_thread_t *th, rb_event_flag_t flag, VALUE self, ID id, VALUE klass);
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#define EXEC_EVENT_HOOK(th, flag, self, id, klass) do { \
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rb_event_flag_t wait_event__ = th->event_flags; \
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if (UNLIKELY(wait_event__)) { \
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if (wait_event__ & (flag | RUBY_EVENT_VM)) { \
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rb_threadptr_exec_event_hooks(th, flag, self, id, klass); \
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} \
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} \
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} while (0)
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#if defined __GNUC__ && __GNUC__ >= 4
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#pragma GCC visibility push(default)
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#endif
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int rb_thread_check_trap_pending(void);
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extern VALUE rb_get_coverages(void);
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extern void rb_set_coverages(VALUE);
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extern void rb_reset_coverages(void);
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#if defined __GNUC__ && __GNUC__ >= 4
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#pragma GCC visibility pop
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#endif
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#endif /* RUBY_VM_CORE_H */
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