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ruby/vm_core.h

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/**********************************************************************
vm_core.h -
$Author$
created at: 04/01/01 19:41:38 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#ifndef RUBY_VM_CORE_H
#define RUBY_VM_CORE_H
/*
* Enable check mode.
* 1: enable local assertions.
*/
#ifndef VM_CHECK_MODE
#define VM_CHECK_MODE 0
#endif
/**
* VM Debug Level
*
* debug level:
* 0: no debug output
* 1: show instruction name
* 2: show stack frame when control stack frame is changed
* 3: show stack status
* 4: show register
* 5:
* 10: gc check
*/
#ifndef VMDEBUG
#define VMDEBUG 0
#endif
#if 0
#undef VMDEBUG
#define VMDEBUG 3
#endif
#if VM_CHECK_MODE > 0
#define VM_ASSERT(expr) ( \
LIKELY(expr) ? (void)0 : \
rb_bug("%s:%d assertion violation - %s", __FILE__, __LINE__, #expr))
#else
#define VM_ASSERT(expr) ((void)0)
#endif
#define RUBY_VM_THREAD_MODEL 2
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "node.h"
#include "vm_debug.h"
#include "vm_opts.h"
#include "id.h"
#include "method.h"
#include "ruby_atomic.h"
#include "ccan/list/list.h"
#include "ruby/thread_native.h"
#if defined(_WIN32)
#include "thread_win32.h"
#elif defined(HAVE_PTHREAD_H)
#include "thread_pthread.h"
#endif
#ifndef ENABLE_VM_OBJSPACE
#ifdef _WIN32
/*
* TODO: object space independent st_table.
* socklist and conlist will be freed exit_handler(), after object
* space destruction.
*/
#define ENABLE_VM_OBJSPACE 0
#else
#define ENABLE_VM_OBJSPACE 1
#endif
#endif
#include <setjmp.h>
#include <signal.h>
#ifndef NSIG
# define NSIG (_SIGMAX + 1) /* For QNX */
#endif
#define RUBY_NSIG NSIG
#ifdef HAVE_STDARG_PROTOTYPES
#include <stdarg.h>
#define va_init_list(a,b) va_start((a),(b))
#else
#include <varargs.h>
#define va_init_list(a,b) va_start((a))
#endif
#if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) && defined(SA_SIGINFO) && !defined(__NetBSD__)
#define USE_SIGALTSTACK
#endif
/*****************/
/* configuration */
/*****************/
/* gcc ver. check */
#if defined(__GNUC__) && __GNUC__ >= 2
#if OPT_TOKEN_THREADED_CODE
#if OPT_DIRECT_THREADED_CODE
#undef OPT_DIRECT_THREADED_CODE
#endif
#endif
#else /* defined(__GNUC__) && __GNUC__ >= 2 */
/* disable threaded code options */
#if OPT_DIRECT_THREADED_CODE
#undef OPT_DIRECT_THREADED_CODE
#endif
#if OPT_TOKEN_THREADED_CODE
#undef OPT_TOKEN_THREADED_CODE
#endif
#endif
#ifdef __native_client__
#undef OPT_DIRECT_THREADED_CODE
#endif
/* call threaded code */
#if OPT_CALL_THREADED_CODE
#if OPT_DIRECT_THREADED_CODE
#undef OPT_DIRECT_THREADED_CODE
#endif /* OPT_DIRECT_THREADED_CODE */
#if OPT_STACK_CACHING
#undef OPT_STACK_CACHING
#endif /* OPT_STACK_CACHING */
#endif /* OPT_CALL_THREADED_CODE */
typedef unsigned long rb_num_t;
enum ruby_tag_type {
RUBY_TAG_RETURN = 0x1,
RUBY_TAG_BREAK = 0x2,
RUBY_TAG_NEXT = 0x3,
RUBY_TAG_RETRY = 0x4,
RUBY_TAG_REDO = 0x5,
RUBY_TAG_RAISE = 0x6,
RUBY_TAG_THROW = 0x7,
RUBY_TAG_FATAL = 0x8,
RUBY_TAG_MASK = 0xf
};
#define TAG_RETURN RUBY_TAG_RETURN
#define TAG_BREAK RUBY_TAG_BREAK
#define TAG_NEXT RUBY_TAG_NEXT
#define TAG_RETRY RUBY_TAG_RETRY
#define TAG_REDO RUBY_TAG_REDO
#define TAG_RAISE RUBY_TAG_RAISE
#define TAG_THROW RUBY_TAG_THROW
#define TAG_FATAL RUBY_TAG_FATAL
#define TAG_MASK RUBY_TAG_MASK
enum ruby_vm_throw_flags {
VM_THROW_NO_ESCAPE_FLAG = 0x8000,
VM_THROW_LEVEL_SHIFT = 16,
VM_THROW_STATE_MASK = 0xff
};
/* forward declarations */
struct rb_thread_struct;
struct rb_control_frame_struct;
/* iseq data type */
typedef struct rb_compile_option_struct rb_compile_option_t;
struct iseq_inline_cache_entry {
rb_serial_t ic_serial;
const rb_cref_t *ic_cref;
union {
size_t index;
VALUE value;
} ic_value;
};
union iseq_inline_storage_entry {
struct {
struct rb_thread_struct *running_thread;
VALUE value;
} once;
struct iseq_inline_cache_entry cache;
};
enum method_missing_reason {
MISSING_NOENTRY = 0x00,
MISSING_PRIVATE = 0x01,
MISSING_PROTECTED = 0x02,
MISSING_VCALL = 0x04,
MISSING_SUPER = 0x08,
MISSING_MISSING = 0x10,
MISSING_NONE = 0x20
};
struct rb_call_info {
/* fixed at compile time */
ID mid;
unsigned int flag;
int orig_argc;
};
struct rb_call_info_kw_arg {
int keyword_len;
VALUE keywords[1];
};
struct rb_call_info_with_kwarg {
struct rb_call_info ci;
struct rb_call_info_kw_arg *kw_arg;
};
struct rb_calling_info {
struct rb_block_struct *blockptr;
VALUE recv;
int argc;
};
struct rb_call_cache;
typedef VALUE (*vm_call_handler)(struct rb_thread_struct *th, struct rb_control_frame_struct *cfp, struct rb_calling_info *calling, const struct rb_call_info *ci, struct rb_call_cache *cc);
struct rb_call_cache {
/* inline cache: keys */
rb_serial_t method_state;
rb_serial_t class_serial;
/* inline cache: values */
const rb_callable_method_entry_t *me;
vm_call_handler call;
union {
unsigned int index; /* used by ivar */
enum method_missing_reason method_missing_reason; /* used by method_missing */
int inc_sp; /* used by cfunc */
} aux;
};
#if 1
#define GetCoreDataFromValue(obj, type, ptr) do { \
(ptr) = (type*)DATA_PTR(obj); \
} while (0)
#else
#define GetCoreDataFromValue(obj, type, ptr) Data_Get_Struct((obj), type, (ptr))
#endif
typedef struct rb_iseq_location_struct {
const VALUE path;
const VALUE absolute_path;
const VALUE base_label;
const VALUE label;
VALUE first_lineno; /* TODO: may be unsigned short */
} rb_iseq_location_t;
struct rb_iseq_constant_body {
enum iseq_type {
ISEQ_TYPE_TOP,
ISEQ_TYPE_METHOD,
ISEQ_TYPE_BLOCK,
ISEQ_TYPE_CLASS,
ISEQ_TYPE_RESCUE,
ISEQ_TYPE_ENSURE,
ISEQ_TYPE_EVAL,
ISEQ_TYPE_MAIN,
ISEQ_TYPE_DEFINED_GUARD
} type; /* instruction sequence type */
unsigned int stack_max; /* for stack overflow check */
/* sizeof(vars) + 1 */
unsigned int local_size;
unsigned int iseq_size;
const VALUE *iseq_encoded; /* encoded iseq (insn addr and operands) */
/**
* parameter information
*
* def m(a1, a2, ..., aM, # mandatory
* b1=(...), b2=(...), ..., bN=(...), # optional
* *c, # rest
* d1, d2, ..., dO, # post
* e1:(...), e2:(...), ..., eK:(...), # keyword
* **f, # keyword_rest
* &g) # block
* =>
*
* lead_num = M
* opt_num = N
* rest_start = M+N
* post_start = M+N+(*1)
* post_num = O
* keyword_num = K
* block_start = M+N+(*1)+O+K
* keyword_bits = M+N+(*1)+O+K+(&1)
* size = M+N+O+(*1)+K+(&1)+(**1) // parameter size.
*/
struct {
struct {
unsigned int has_lead : 1;
unsigned int has_opt : 1;
unsigned int has_rest : 1;
unsigned int has_post : 1;
unsigned int has_kw : 1;
unsigned int has_kwrest : 1;
unsigned int has_block : 1;
unsigned int ambiguous_param0 : 1; /* {|a|} */
} flags;
unsigned int size;
int lead_num;
int opt_num;
int rest_start;
int post_start;
int post_num;
int block_start;
const VALUE *opt_table; /* (opt_num + 1) entries. */
/* opt_num and opt_table:
*
* def foo o1=e1, o2=e2, ..., oN=eN
* #=>
* # prologue code
* A1: e1
* A2: e2
* ...
* AN: eN
* AL: body
* opt_num = N
* opt_table = [A1, A2, ..., AN, AL]
*/
const struct rb_iseq_param_keyword {
int num;
int required_num;
int bits_start;
int rest_start;
const ID *table;
const VALUE *default_values;
} *keyword;
} param;
rb_iseq_location_t location;
/* insn info, must be freed */
const struct iseq_line_info_entry *line_info_table;
const ID *local_table; /* must free */
/* catch table */
const struct iseq_catch_table *catch_table;
/* for child iseq */
const struct rb_iseq_struct *parent_iseq;
struct rb_iseq_struct *local_iseq; /* local_iseq->flip_cnt can be modified */
union iseq_inline_storage_entry *is_entries;
struct rb_call_info *ci_entries; /* struct rb_call_info ci_entries[ci_size];
* struct rb_call_info_with_kwarg cikw_entries[ci_kw_size];
* So that:
* struct rb_call_info_with_kwarg *cikw_entries = &body->ci_entries[ci_size];
*/
struct rb_call_cache *cc_entries; /* size is ci_size = ci_kw_size */
const VALUE mark_ary; /* Array: includes operands which should be GC marked */
unsigned int local_table_size;
unsigned int is_size;
unsigned int ci_size;
unsigned int ci_kw_size;
unsigned int line_info_size;
};
struct rb_iseq_variable_body {
const VALUE coverage; /* coverage array */
rb_num_t flip_cnt;
/* original iseq, before encoding
* used for debug/dump (TODO: union with compile_data) */
VALUE *iseq;
};
/* T_IMEMO/iseq */
/* typedef rb_iseq_t is in method.h */
struct rb_iseq_struct {
VALUE flags;
struct iseq_compile_data *compile_data; /* used at compile time */
struct rb_iseq_constant_body *body;
struct rb_iseq_variable_body *variable_body;
VALUE dummy2;
};
enum ruby_special_exceptions {
ruby_error_reenter,
ruby_error_nomemory,
ruby_error_sysstack,
ruby_error_closed_stream,
ruby_special_error_count
};
enum ruby_basic_operators {
BOP_PLUS,
BOP_MINUS,
BOP_MULT,
BOP_DIV,
BOP_MOD,
BOP_EQ,
BOP_EQQ,
BOP_LT,
BOP_LE,
BOP_LTLT,
BOP_AREF,
BOP_ASET,
BOP_LENGTH,
BOP_SIZE,
BOP_EMPTY_P,
BOP_SUCC,
BOP_GT,
BOP_GE,
BOP_NOT,
BOP_NEQ,
BOP_MATCH,
BOP_FREEZE,
BOP_LAST_
};
#define GetVMPtr(obj, ptr) \
GetCoreDataFromValue((obj), rb_vm_t, (ptr))
struct rb_objspace;
struct rb_objspace *rb_objspace_alloc(void);
void rb_objspace_free(struct rb_objspace *);
typedef struct rb_hook_list_struct {
struct rb_event_hook_struct *hooks;
rb_event_flag_t events;
int need_clean;
} rb_hook_list_t;
typedef struct rb_vm_struct {
VALUE self;
rb_global_vm_lock_t gvl;
rb_nativethread_lock_t thread_destruct_lock;
struct rb_thread_struct *main_thread;
struct rb_thread_struct *running_thread;
struct list_head living_threads;
size_t living_thread_num;
VALUE thgroup_default;
int running;
int thread_abort_on_exception;
int trace_running;
volatile int sleeper;
/* object management */
VALUE mark_object_ary;
const VALUE special_exceptions[ruby_special_error_count];
/* load */
VALUE top_self;
VALUE load_path;
VALUE load_path_snapshot;
VALUE load_path_check_cache;
VALUE expanded_load_path;
VALUE loaded_features;
VALUE loaded_features_snapshot;
struct st_table *loaded_features_index;
struct st_table *loading_table;
/* signal */
struct {
VALUE cmd;
int safe;
} trap_list[RUBY_NSIG];
/* hook */
rb_hook_list_t event_hooks;
/* relation table of ensure - rollback for callcc */
struct st_table *ensure_rollback_table;
/* postponed_job */
struct rb_postponed_job_struct *postponed_job_buffer;
int postponed_job_index;
int src_encoding_index;
VALUE verbose, debug, orig_progname, progname;
VALUE coverages;
VALUE defined_module_hash;
struct rb_objspace *objspace;
/*
* @shyouhei notes that this is not for storing normal Ruby
* objects so do *NOT* mark this when you GC.
*/
struct RArray at_exit;
VALUE *defined_strings;
st_table *frozen_strings;
/* params */
struct { /* size in byte */
size_t thread_vm_stack_size;
size_t thread_machine_stack_size;
size_t fiber_vm_stack_size;
size_t fiber_machine_stack_size;
} default_params;
short redefined_flag[BOP_LAST_];
} rb_vm_t;
/* default values */
#define RUBY_VM_SIZE_ALIGN 4096
#define RUBY_VM_THREAD_VM_STACK_SIZE ( 128 * 1024 * sizeof(VALUE)) /* 512 KB or 1024 KB */
#define RUBY_VM_THREAD_VM_STACK_SIZE_MIN ( 2 * 1024 * sizeof(VALUE)) /* 8 KB or 16 KB */
#define RUBY_VM_THREAD_MACHINE_STACK_SIZE ( 128 * 1024 * sizeof(VALUE)) /* 512 KB or 1024 KB */
#define RUBY_VM_THREAD_MACHINE_STACK_SIZE_MIN ( 16 * 1024 * sizeof(VALUE)) /* 64 KB or 128 KB */
#define RUBY_VM_FIBER_VM_STACK_SIZE ( 16 * 1024 * sizeof(VALUE)) /* 64 KB or 128 KB */
#define RUBY_VM_FIBER_VM_STACK_SIZE_MIN ( 2 * 1024 * sizeof(VALUE)) /* 8 KB or 16 KB */
#define RUBY_VM_FIBER_MACHINE_STACK_SIZE ( 64 * 1024 * sizeof(VALUE)) /* 256 KB or 512 KB */
#define RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN ( 16 * 1024 * sizeof(VALUE)) /* 64 KB or 128 KB */
/* optimize insn */
#define FIXNUM_REDEFINED_OP_FLAG (1 << 0)
#define FLOAT_REDEFINED_OP_FLAG (1 << 1)
#define STRING_REDEFINED_OP_FLAG (1 << 2)
#define ARRAY_REDEFINED_OP_FLAG (1 << 3)
#define HASH_REDEFINED_OP_FLAG (1 << 4)
#define BIGNUM_REDEFINED_OP_FLAG (1 << 5)
#define SYMBOL_REDEFINED_OP_FLAG (1 << 6)
#define TIME_REDEFINED_OP_FLAG (1 << 7)
#define REGEXP_REDEFINED_OP_FLAG (1 << 8)
#define BASIC_OP_UNREDEFINED_P(op, klass) (LIKELY((GET_VM()->redefined_flag[(op)]&(klass)) == 0))
#ifndef VM_DEBUG_BP_CHECK
#define VM_DEBUG_BP_CHECK 0
#endif
#ifndef VM_DEBUG_VERIFY_METHOD_CACHE
#define VM_DEBUG_VERIFY_METHOD_CACHE (VM_DEBUG_MODE != 0)
#endif
typedef struct rb_control_frame_struct {
const VALUE *pc; /* cfp[0] */
VALUE *sp; /* cfp[1] */
const rb_iseq_t *iseq; /* cfp[2] */
VALUE flag; /* cfp[3] */
VALUE self; /* cfp[4] / block[0] */
VALUE *ep; /* cfp[5] / block[1] */
const rb_iseq_t *block_iseq;/* cfp[6] / block[2] */
VALUE proc; /* cfp[7] / block[3] */
#if VM_DEBUG_BP_CHECK
VALUE *bp_check; /* cfp[8] */
#endif
} rb_control_frame_t;
typedef struct rb_block_struct {
VALUE self; /* share with method frame if it's only block */
VALUE *ep; /* share with method frame if it's only block */
const rb_iseq_t *iseq;
VALUE proc;
} rb_block_t;
extern const rb_data_type_t ruby_threadptr_data_type;
#define GetThreadPtr(obj, ptr) \
TypedData_Get_Struct((obj), rb_thread_t, &ruby_threadptr_data_type, (ptr))
enum rb_thread_status {
THREAD_RUNNABLE,
THREAD_STOPPED,
THREAD_STOPPED_FOREVER,
THREAD_KILLED
};
typedef RUBY_JMP_BUF rb_jmpbuf_t;
/*
the members which are written in TH_PUSH_TAG() should be placed at
the beginning and the end, so that entire region is accessible.
*/
struct rb_vm_tag {
VALUE tag;
VALUE retval;
rb_jmpbuf_t buf;
struct rb_vm_tag *prev;
};
struct rb_vm_protect_tag {
struct rb_vm_protect_tag *prev;
};
struct rb_unblock_callback {
rb_unblock_function_t *func;
void *arg;
};
struct rb_mutex_struct;
typedef struct rb_thread_list_struct{
struct rb_thread_list_struct *next;
struct rb_thread_struct *th;
} rb_thread_list_t;
typedef struct rb_ensure_entry {
VALUE marker;
VALUE (*e_proc)(ANYARGS);
VALUE data2;
} rb_ensure_entry_t;
typedef struct rb_ensure_list {
struct rb_ensure_list *next;
struct rb_ensure_entry entry;
} rb_ensure_list_t;
typedef char rb_thread_id_string_t[sizeof(rb_nativethread_id_t) * 2 + 3];
typedef struct rb_fiber_struct rb_fiber_t;
typedef struct rb_thread_struct {
struct list_node vmlt_node;
VALUE self;
rb_vm_t *vm;
/* execution information */
VALUE *stack; /* must free, must mark */
size_t stack_size; /* size in word (byte size / sizeof(VALUE)) */
rb_control_frame_t *cfp;
int safe_level;
int raised_flag;
VALUE last_status; /* $? */
/* passing state */
int state;
int waiting_fd;
/* for rb_iterate */
const rb_block_t *passed_block;
/* for bmethod */
const rb_callable_method_entry_t *passed_bmethod_me;
/* for cfunc */
struct rb_calling_info *calling;
/* for load(true) */
VALUE top_self;
VALUE top_wrapper;
/* eval env */
rb_block_t *base_block;
VALUE *root_lep;
VALUE root_svar;
/* thread control */
rb_nativethread_id_t thread_id;
#ifdef NON_SCALAR_THREAD_ID
rb_thread_id_string_t thread_id_string;
#endif
enum rb_thread_status status;
int to_kill;
int priority;
native_thread_data_t native_thread_data;
void *blocking_region_buffer;
VALUE thgroup;
VALUE value;
/* temporary place of errinfo */
VALUE errinfo;
/* temporary place of retval on OPT_CALL_THREADED_CODE */
#if OPT_CALL_THREADED_CODE
VALUE retval;
#endif
/* async errinfo queue */
VALUE pending_interrupt_queue;
VALUE pending_interrupt_mask_stack;
int pending_interrupt_queue_checked;
rb_atomic_t interrupt_flag;
unsigned long interrupt_mask;
rb_nativethread_lock_t interrupt_lock;
rb_nativethread_cond_t interrupt_cond;
struct rb_unblock_callback unblock;
VALUE locking_mutex;
struct rb_mutex_struct *keeping_mutexes;
struct rb_vm_tag *tag;
struct rb_vm_protect_tag *protect_tag;
/*! Thread-local state of evaluation context.
*
* If negative, this thread is evaluating the main program.
* If positive, this thread is evaluating a program under Kernel::eval
* family.
*/
int parse_in_eval;
/*! Thread-local state of compiling context.
*
* If non-zero, the parser does not automatically print error messages to
* stderr. */
int mild_compile_error;
/* storage */
st_table *local_storage;
VALUE local_storage_recursive_hash;
VALUE local_storage_recursive_hash_for_trace;
rb_thread_list_t *join_list;
VALUE first_proc;
VALUE first_args;
VALUE (*first_func)(ANYARGS);
/* for GC */
struct {
VALUE *stack_start;
VALUE *stack_end;
size_t stack_maxsize;
#ifdef __ia64
VALUE *register_stack_start;
VALUE *register_stack_end;
size_t register_stack_maxsize;
#endif
jmp_buf regs;
} machine;
/* statistics data for profiler */
VALUE stat_insn_usage;
/* tracer */
rb_hook_list_t event_hooks;
struct rb_trace_arg_struct *trace_arg; /* trace information */
/* fiber */
rb_fiber_t *fiber;
rb_fiber_t *root_fiber;
rb_jmpbuf_t root_jmpbuf;
/* ensure & callcc */
rb_ensure_list_t *ensure_list;
/* misc */
enum method_missing_reason method_missing_reason;
int abort_on_exception;
#ifdef USE_SIGALTSTACK
void *altstack;
#endif
unsigned long running_time_us;
VALUE name;
} rb_thread_t;
typedef enum {
VM_DEFINECLASS_TYPE_CLASS = 0x00,
VM_DEFINECLASS_TYPE_SINGLETON_CLASS = 0x01,
VM_DEFINECLASS_TYPE_MODULE = 0x02,
/* 0x03..0x06 is reserved */
VM_DEFINECLASS_TYPE_MASK = 0x07
} rb_vm_defineclass_type_t;
#define VM_DEFINECLASS_TYPE(x) ((rb_vm_defineclass_type_t)(x) & VM_DEFINECLASS_TYPE_MASK)
#define VM_DEFINECLASS_FLAG_SCOPED 0x08
#define VM_DEFINECLASS_FLAG_HAS_SUPERCLASS 0x10
#define VM_DEFINECLASS_SCOPED_P(x) ((x) & VM_DEFINECLASS_FLAG_SCOPED)
#define VM_DEFINECLASS_HAS_SUPERCLASS_P(x) \
((x) & VM_DEFINECLASS_FLAG_HAS_SUPERCLASS)
/* iseq.c */
RUBY_SYMBOL_EXPORT_BEGIN
/* node -> iseq */
rb_iseq_t *rb_iseq_new(NODE*, VALUE, VALUE, VALUE, const rb_iseq_t *parent, enum iseq_type);
rb_iseq_t *rb_iseq_new_top(NODE *node, VALUE name, VALUE path, VALUE absolute_path, const rb_iseq_t *parent);
rb_iseq_t *rb_iseq_new_main(NODE *node, VALUE path, VALUE absolute_path);
rb_iseq_t *rb_iseq_new_with_bopt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE, enum iseq_type, VALUE);
rb_iseq_t *rb_iseq_new_with_opt(NODE*, VALUE, VALUE, VALUE, VALUE, const rb_iseq_t *parent, enum iseq_type, const rb_compile_option_t*);
/* src -> iseq */
rb_iseq_t *rb_iseq_compile(VALUE src, VALUE file, VALUE line);
rb_iseq_t *rb_iseq_compile_on_base(VALUE src, VALUE file, VALUE line, rb_block_t *base_block);
rb_iseq_t *rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE absolute_path, VALUE line, rb_block_t *base_block, VALUE opt);
VALUE rb_iseq_disasm(const rb_iseq_t *iseq);
int rb_iseq_disasm_insn(VALUE str, const VALUE *iseqval, size_t pos, const rb_iseq_t *iseq, VALUE child);
const char *ruby_node_name(int node);
RUBY_EXTERN VALUE rb_cISeq;
RUBY_EXTERN VALUE rb_cRubyVM;
RUBY_EXTERN VALUE rb_cEnv;
RUBY_EXTERN VALUE rb_mRubyVMFrozenCore;
RUBY_SYMBOL_EXPORT_END
#define GetProcPtr(obj, ptr) \
GetCoreDataFromValue((obj), rb_proc_t, (ptr))
typedef struct {
rb_block_t block;
int8_t safe_level; /* 0..1 */
int8_t is_from_method; /* bool */
int8_t is_lambda; /* bool */
} rb_proc_t;
#define GetEnvPtr(obj, ptr) \
GetCoreDataFromValue((obj), rb_env_t, (ptr))
typedef struct {
int env_size;
rb_block_t block;
VALUE env[1]; /* flexible array */
} rb_env_t;
extern const rb_data_type_t ruby_binding_data_type;
#define GetBindingPtr(obj, ptr) \
GetCoreDataFromValue((obj), rb_binding_t, (ptr))
typedef struct {
VALUE env;
VALUE path;
unsigned short first_lineno;
} rb_binding_t;
/* used by compile time and send insn */
enum vm_check_match_type {
VM_CHECKMATCH_TYPE_WHEN = 1,
VM_CHECKMATCH_TYPE_CASE = 2,
VM_CHECKMATCH_TYPE_RESCUE = 3
};
#define VM_CHECKMATCH_TYPE_MASK 0x03
#define VM_CHECKMATCH_ARRAY 0x04
#define VM_CALL_ARGS_SPLAT (0x01 << 0) /* m(*args) */
#define VM_CALL_ARGS_BLOCKARG (0x01 << 1) /* m(&block) */
#define VM_CALL_FCALL (0x01 << 2) /* m(...) */
#define VM_CALL_VCALL (0x01 << 3) /* m */
#define VM_CALL_ARGS_SIMPLE (0x01 << 4) /* (ci->flag & (SPLAT|BLOCKARG)) && blockiseq == NULL && ci->kw_arg == NULL */
#define VM_CALL_BLOCKISEQ (0x01 << 5) /* has blockiseq */
#define VM_CALL_KWARG (0x01 << 6) /* has kwarg */
#define VM_CALL_TAILCALL (0x01 << 7) /* located at tail position */
#define VM_CALL_SUPER (0x01 << 8) /* super */
#define VM_CALL_OPT_SEND (0x01 << 9) /* internal flag */
enum vm_special_object_type {
VM_SPECIAL_OBJECT_VMCORE = 1,
VM_SPECIAL_OBJECT_CBASE,
VM_SPECIAL_OBJECT_CONST_BASE
};
enum vm_svar_index {
VM_SVAR_LASTLINE = 0, /* $_ */
VM_SVAR_BACKREF = 1, /* $~ */
VM_SVAR_EXTRA_START = 2,
VM_SVAR_FLIPFLOP_START = 2 /* flipflop */
};
#define VM_FRAME_MAGIC_METHOD 0x11
#define VM_FRAME_MAGIC_BLOCK 0x21
#define VM_FRAME_MAGIC_CLASS 0x31
#define VM_FRAME_MAGIC_TOP 0x41
#define VM_FRAME_MAGIC_CFUNC 0x61
#define VM_FRAME_MAGIC_PROC 0x71
#define VM_FRAME_MAGIC_IFUNC 0x81
#define VM_FRAME_MAGIC_EVAL 0x91
#define VM_FRAME_MAGIC_LAMBDA 0xa1
#define VM_FRAME_MAGIC_RESCUE 0xb1
#define VM_FRAME_MAGIC_DUMMY 0xc1
#define VM_FRAME_MAGIC_MASK_BITS 8
#define VM_FRAME_MAGIC_MASK (~(~(VALUE)0<<VM_FRAME_MAGIC_MASK_BITS))
#define VM_FRAME_TYPE(cfp) ((cfp)->flag & VM_FRAME_MAGIC_MASK)
/* other frame flag */
#define VM_FRAME_FLAG_PASSED 0x0100
#define VM_FRAME_FLAG_FINISH 0x0200
#define VM_FRAME_FLAG_BMETHOD 0x0400
#define VM_FRAME_TYPE_FINISH_P(cfp) (((cfp)->flag & VM_FRAME_FLAG_FINISH) != 0)
#define VM_FRAME_TYPE_BMETHOD_P(cfp) (((cfp)->flag & VM_FRAME_FLAG_BMETHOD) != 0)
#define RUBYVM_CFUNC_FRAME_P(cfp) \
(VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC)
/* inline cache */
typedef struct iseq_inline_cache_entry *IC;
typedef struct rb_call_info *CALL_INFO;
typedef struct rb_call_cache *CALL_CACHE;
void rb_vm_change_state(void);
typedef VALUE CDHASH;
#ifndef FUNC_FASTCALL
#define FUNC_FASTCALL(x) x
#endif
typedef rb_control_frame_t *
(FUNC_FASTCALL(*rb_insn_func_t))(rb_thread_t *, rb_control_frame_t *);
#define GC_GUARDED_PTR(p) ((VALUE)((VALUE)(p) | 0x01))
#define GC_GUARDED_PTR_REF(p) ((void *)(((VALUE)(p)) & ~0x03))
#define GC_GUARDED_PTR_P(p) (((VALUE)(p)) & 0x01)
/*
* block frame:
* ep[ 0]: prev frame
* ep[-1]: CREF (for *_eval)
*
* method frame:
* ep[ 0]: block pointer (ptr | VM_ENVVAL_BLOCK_PTR_FLAG)
*/
#define VM_ENVVAL_BLOCK_PTR_FLAG 0x02
#define VM_ENVVAL_BLOCK_PTR(v) (GC_GUARDED_PTR(v) | VM_ENVVAL_BLOCK_PTR_FLAG)
#define VM_ENVVAL_BLOCK_PTR_P(v) ((v) & VM_ENVVAL_BLOCK_PTR_FLAG)
#define VM_ENVVAL_PREV_EP_PTR(v) ((VALUE)GC_GUARDED_PTR(v))
#define VM_ENVVAL_PREV_EP_PTR_P(v) (!(VM_ENVVAL_BLOCK_PTR_P(v)))
#define VM_EP_PREV_EP(ep) ((VALUE *)GC_GUARDED_PTR_REF((ep)[0]))
#define VM_EP_BLOCK_PTR(ep) ((rb_block_t *)GC_GUARDED_PTR_REF((ep)[0]))
#define VM_EP_LEP_P(ep) VM_ENVVAL_BLOCK_PTR_P((ep)[0])
VALUE *rb_vm_ep_local_ep(VALUE *ep);
rb_block_t *rb_vm_control_frame_block_ptr(const rb_control_frame_t *cfp);
#define RUBY_VM_PREVIOUS_CONTROL_FRAME(cfp) ((cfp)+1)
#define RUBY_VM_NEXT_CONTROL_FRAME(cfp) ((cfp)-1)
#define RUBY_VM_END_CONTROL_FRAME(th) \
((rb_control_frame_t *)((th)->stack + (th)->stack_size))
#define RUBY_VM_VALID_CONTROL_FRAME_P(cfp, ecfp) \
((void *)(ecfp) > (void *)(cfp))
#define RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(th, cfp) \
(!RUBY_VM_VALID_CONTROL_FRAME_P((cfp), RUBY_VM_END_CONTROL_FRAME(th)))
#define RUBY_VM_IFUNC_P(ptr) (RB_TYPE_P((VALUE)(ptr), T_IMEMO) && imemo_type((VALUE)ptr) == imemo_ifunc)
#define RUBY_VM_NORMAL_ISEQ_P(ptr) (RB_TYPE_P((VALUE)(ptr), T_IMEMO) && imemo_type((VALUE)ptr) == imemo_iseq)
#define RUBY_VM_GET_BLOCK_PTR_IN_CFP(cfp) ((rb_block_t *)(&(cfp)->self))
#define RUBY_VM_GET_CFP_FROM_BLOCK_PTR(b) \
((rb_control_frame_t *)((VALUE *)(b) - 4))
/* magic number `4' is depend on rb_control_frame_t layout. */
/* VM related object allocate functions */
VALUE rb_thread_alloc(VALUE klass);
VALUE rb_proc_alloc(VALUE klass);
VALUE rb_binding_alloc(VALUE klass);
/* for debug */
extern void rb_vmdebug_stack_dump_raw(rb_thread_t *, rb_control_frame_t *);
extern void rb_vmdebug_debug_print_pre(rb_thread_t *th, rb_control_frame_t *cfp, VALUE *_pc);
extern void rb_vmdebug_debug_print_post(rb_thread_t *th, rb_control_frame_t *cfp);
#define SDR() rb_vmdebug_stack_dump_raw(GET_THREAD(), GET_THREAD()->cfp)
#define SDR2(cfp) rb_vmdebug_stack_dump_raw(GET_THREAD(), (cfp))
void rb_vm_bugreport(const void *);
NORETURN(void rb_bug_context(const void *, const char *fmt, ...));
/* functions about thread/vm execution */
RUBY_SYMBOL_EXPORT_BEGIN
VALUE rb_iseq_eval(const rb_iseq_t *iseq);
VALUE rb_iseq_eval_main(const rb_iseq_t *iseq);
RUBY_SYMBOL_EXPORT_END
int rb_thread_method_id_and_class(rb_thread_t *th, ID *idp, VALUE *klassp);
VALUE rb_vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc,
int argc, const VALUE *argv, const rb_block_t *blockptr);
VALUE rb_vm_make_proc_lambda(rb_thread_t *th, const rb_block_t *block, VALUE klass, int8_t is_lambda);
VALUE rb_vm_make_proc(rb_thread_t *th, const rb_block_t *block, VALUE klass);
VALUE rb_vm_make_binding(rb_thread_t *th, const rb_control_frame_t *src_cfp);
VALUE rb_vm_env_local_variables(const rb_env_t *env);
VALUE rb_vm_env_prev_envval(const rb_env_t *env);
VALUE rb_vm_proc_envval(const rb_proc_t *proc);
VALUE *rb_binding_add_dynavars(rb_binding_t *bind, int dyncount, const ID *dynvars);
void rb_vm_inc_const_missing_count(void);
void rb_vm_gvl_destroy(rb_vm_t *vm);
VALUE rb_vm_call(rb_thread_t *th, VALUE recv, VALUE id, int argc,
const VALUE *argv, const rb_callable_method_entry_t *me);
void rb_thread_start_timer_thread(void);
void rb_thread_stop_timer_thread(void);
void rb_thread_reset_timer_thread(void);
void rb_thread_wakeup_timer_thread(void);
static inline void
rb_vm_living_threads_init(rb_vm_t *vm)
{
list_head_init(&vm->living_threads);
vm->living_thread_num = 0;
}
static inline void
rb_vm_living_threads_insert(rb_vm_t *vm, rb_thread_t *th)
{
list_add_tail(&vm->living_threads, &th->vmlt_node);
vm->living_thread_num++;
}
static inline void
rb_vm_living_threads_remove(rb_vm_t *vm, rb_thread_t *th)
{
list_del(&th->vmlt_node);
vm->living_thread_num--;
}
typedef int rb_backtrace_iter_func(void *, VALUE, int, VALUE);
rb_control_frame_t *rb_vm_get_ruby_level_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp);
rb_control_frame_t *rb_vm_get_binding_creatable_next_cfp(const rb_thread_t *th, const rb_control_frame_t *cfp);
int rb_vm_get_sourceline(const rb_control_frame_t *);
VALUE rb_name_err_mesg_new(VALUE mesg, VALUE recv, VALUE method);
void rb_vm_stack_to_heap(rb_thread_t *th);
void ruby_thread_init_stack(rb_thread_t *th);
int rb_vm_control_frame_id_and_class(const rb_control_frame_t *cfp, ID *idp, VALUE *klassp);
void rb_vm_rewind_cfp(rb_thread_t *th, rb_control_frame_t *cfp);
void rb_vm_register_special_exception(enum ruby_special_exceptions sp, VALUE exception_class, const char *mesg);
void rb_gc_mark_machine_stack(rb_thread_t *th);
int rb_autoloading_value(VALUE mod, ID id, VALUE* value);
void rb_vm_rewrite_cref(rb_cref_t *node, VALUE old_klass, VALUE new_klass, rb_cref_t **new_cref_ptr);
const rb_callable_method_entry_t *rb_vm_frame_method_entry(const rb_control_frame_t *cfp);
#define sysstack_error GET_VM()->special_exceptions[ruby_error_sysstack]
#define RUBY_CONST_ASSERT(expr) (1/!!(expr)) /* expr must be a compile-time constant */
#define VM_STACK_OVERFLOWED_P(cfp, sp, margin) \
(!RUBY_CONST_ASSERT(sizeof(*(sp)) == sizeof(VALUE)) || \
!RUBY_CONST_ASSERT(sizeof(*(cfp)) == sizeof(rb_control_frame_t)) || \
((rb_control_frame_t *)((sp) + (margin)) + 1) >= (cfp))
#define WHEN_VM_STACK_OVERFLOWED(cfp, sp, margin) \
if (LIKELY(!VM_STACK_OVERFLOWED_P(cfp, sp, margin))) {(void)0;} else /* overflowed */
#define CHECK_VM_STACK_OVERFLOW0(cfp, sp, margin) \
WHEN_VM_STACK_OVERFLOWED(cfp, sp, margin) vm_stackoverflow()
#define CHECK_VM_STACK_OVERFLOW(cfp, margin) \
WHEN_VM_STACK_OVERFLOWED(cfp, (cfp)->sp, margin) vm_stackoverflow()
/* for thread */
#if RUBY_VM_THREAD_MODEL == 2
extern rb_thread_t *ruby_current_thread;
extern rb_vm_t *ruby_current_vm;
extern rb_event_flag_t ruby_vm_event_flags;
#define GET_VM() ruby_current_vm
#ifndef OPT_CALL_CFUNC_WITHOUT_FRAME
#define OPT_CALL_CFUNC_WITHOUT_FRAME 0
#endif
#define GET_THREAD() vm_thread_with_frame(ruby_current_thread)
#if OPT_CALL_CFUNC_WITHOUT_FRAME
static inline rb_thread_t *
vm_thread_with_frame(rb_thread_t *th)
{
if (UNLIKELY(th->passed_ci != 0)) {
void rb_vm_call_cfunc_push_frame(rb_thread_t *th);
rb_vm_call_cfunc_push_frame(th);
}
return th;
}
#else
#define vm_thread_with_frame(th) (th)
#endif
#define rb_thread_set_current_raw(th) (void)(ruby_current_thread = (th))
#define rb_thread_set_current(th) do { \
if ((th)->vm->running_thread != (th)) { \
(th)->running_time_us = 0; \
} \
rb_thread_set_current_raw(th); \
(th)->vm->running_thread = (th); \
} while (0)
#else
#error "unsupported thread model"
#endif
enum {
TIMER_INTERRUPT_MASK = 0x01,
PENDING_INTERRUPT_MASK = 0x02,
POSTPONED_JOB_INTERRUPT_MASK = 0x04,
TRAP_INTERRUPT_MASK = 0x08
};
#define RUBY_VM_SET_TIMER_INTERRUPT(th) ATOMIC_OR((th)->interrupt_flag, TIMER_INTERRUPT_MASK)
#define RUBY_VM_SET_INTERRUPT(th) ATOMIC_OR((th)->interrupt_flag, PENDING_INTERRUPT_MASK)
#define RUBY_VM_SET_POSTPONED_JOB_INTERRUPT(th) ATOMIC_OR((th)->interrupt_flag, POSTPONED_JOB_INTERRUPT_MASK)
#define RUBY_VM_SET_TRAP_INTERRUPT(th) ATOMIC_OR((th)->interrupt_flag, TRAP_INTERRUPT_MASK)
#define RUBY_VM_INTERRUPTED(th) ((th)->interrupt_flag & ~(th)->interrupt_mask & (PENDING_INTERRUPT_MASK|TRAP_INTERRUPT_MASK))
#define RUBY_VM_INTERRUPTED_ANY(th) ((th)->interrupt_flag & ~(th)->interrupt_mask)
int rb_signal_buff_size(void);
void rb_signal_exec(rb_thread_t *th, int sig);
void rb_threadptr_check_signal(rb_thread_t *mth);
void rb_threadptr_signal_raise(rb_thread_t *th, int sig);
void rb_threadptr_signal_exit(rb_thread_t *th);
void rb_threadptr_execute_interrupts(rb_thread_t *, int);
void rb_threadptr_interrupt(rb_thread_t *th);
void rb_threadptr_unlock_all_locking_mutexes(rb_thread_t *th);
void rb_threadptr_pending_interrupt_clear(rb_thread_t *th);
void rb_threadptr_pending_interrupt_enque(rb_thread_t *th, VALUE v);
int rb_threadptr_pending_interrupt_active_p(rb_thread_t *th);
#define RUBY_VM_CHECK_INTS(th) ruby_vm_check_ints(th)
static inline void
ruby_vm_check_ints(rb_thread_t *th)
{
if (UNLIKELY(RUBY_VM_INTERRUPTED_ANY(th))) {
rb_threadptr_execute_interrupts(th, 0);
}
}
/* tracer */
struct rb_trace_arg_struct {
rb_event_flag_t event;
rb_thread_t *th;
rb_control_frame_t *cfp;
VALUE self;
ID id;
VALUE klass;
VALUE data;
int klass_solved;
/* calc from cfp */
int lineno;
VALUE path;
};
void rb_threadptr_exec_event_hooks(struct rb_trace_arg_struct *trace_arg);
void rb_threadptr_exec_event_hooks_and_pop_frame(struct rb_trace_arg_struct *trace_arg);
#define EXEC_EVENT_HOOK_ORIG(th_, flag_, self_, id_, klass_, data_, pop_p_) do { \
const rb_event_flag_t flag_arg_ = (flag_); \
if (UNLIKELY(ruby_vm_event_flags & (flag_arg_))) { \
/* defer evaluating the other arguments */ \
ruby_exec_event_hook_orig(th_, flag_arg_, self_, id_, klass_, data_, pop_p_); \
} \
} while (0)
static inline void
ruby_exec_event_hook_orig(rb_thread_t *const th, const rb_event_flag_t flag,
VALUE self, ID id, VALUE klass, VALUE data, int pop_p)
{
if ((th->event_hooks.events | th->vm->event_hooks.events) & flag) {
struct rb_trace_arg_struct trace_arg;
trace_arg.event = flag;
trace_arg.th = th;
trace_arg.cfp = th->cfp;
trace_arg.self = self;
trace_arg.id = id;
trace_arg.klass = klass;
trace_arg.data = data;
trace_arg.path = Qundef;
trace_arg.klass_solved = 0;
if (pop_p) rb_threadptr_exec_event_hooks_and_pop_frame(&trace_arg);
else rb_threadptr_exec_event_hooks(&trace_arg);
}
}
#define EXEC_EVENT_HOOK(th_, flag_, self_, id_, klass_, data_) \
EXEC_EVENT_HOOK_ORIG(th_, flag_, self_, id_, klass_, data_, 0)
#define EXEC_EVENT_HOOK_AND_POP_FRAME(th_, flag_, self_, id_, klass_, data_) \
EXEC_EVENT_HOOK_ORIG(th_, flag_, self_, id_, klass_, data_, 1)
RUBY_SYMBOL_EXPORT_BEGIN
int rb_thread_check_trap_pending(void);
extern VALUE rb_get_coverages(void);
extern void rb_set_coverages(VALUE);
extern void rb_reset_coverages(void);
void rb_postponed_job_flush(rb_vm_t *vm);
RUBY_SYMBOL_EXPORT_END
#endif /* RUBY_VM_CORE_H */
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