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ruby/vm_core.h

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C
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/**********************************************************************
vm_core.h -
$Author$
$Date$
created at: 04/01/01 19:41:38 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#ifndef RUBY_CORE_H
#define RUBY_CORE_H
#define RUBY_VM_THREAD_MODEL 2
#include <setjmp.h>
#include "ruby/ruby.h"
#include "ruby/signal.h"
#include "ruby/st.h"
#include "ruby/node.h"
#include "debug.h"
#include "vm_opts.h"
#include "id.h"
#if defined(_WIN32)
#include "thread_win32.h"
#elif defined(HAVE_PTHREAD_H)
#include "thread_pthread.h"
#else
#error "unsupported thread type"
#endif
#include <signal.h>
#ifndef NSIG
# ifdef DJGPP
# define NSIG SIGMAX
# else
# define NSIG (_SIGMAX + 1) /* For QNX */
# endif
#endif
#define RUBY_NSIG NSIG
/*****************/
/* 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
/* 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 */
/* likely */
#if __GNUC__ >= 3
#define LIKELY(x) (__builtin_expect((x), 1))
#define UNLIKELY(x) (__builtin_expect((x), 0))
#else /* __GNUC__ >= 3 */
#define LIKELY(x) (x)
#define UNLIKELY(x) (x)
#endif /* __GNUC__ >= 3 */
#define ISEQ_TYPE_TOP INT2FIX(1)
#define ISEQ_TYPE_METHOD INT2FIX(2)
#define ISEQ_TYPE_BLOCK INT2FIX(3)
#define ISEQ_TYPE_CLASS INT2FIX(4)
#define ISEQ_TYPE_RESCUE INT2FIX(5)
#define ISEQ_TYPE_ENSURE INT2FIX(6)
#define ISEQ_TYPE_EVAL INT2FIX(7)
#define ISEQ_TYPE_DEFINED_GUARD INT2FIX(8)
#define CATCH_TYPE_RESCUE INT2FIX(1)
#define CATCH_TYPE_ENSURE INT2FIX(2)
#define CATCH_TYPE_RETRY INT2FIX(3)
#define CATCH_TYPE_BREAK INT2FIX(4)
#define CATCH_TYPE_REDO INT2FIX(5)
#define CATCH_TYPE_NEXT INT2FIX(6)
struct iseq_insn_info_entry {
unsigned short position;
unsigned short line_no;
};
struct iseq_catch_table_entry {
VALUE type;
VALUE iseq;
unsigned long start;
unsigned long end;
unsigned long cont;
unsigned long sp;
};
#define INITIAL_ISEQ_COMPILE_DATA_STORAGE_BUFF_SIZE (512)
struct iseq_compile_data_storage {
struct iseq_compile_data_storage *next;
unsigned long pos;
unsigned long size;
char *buff;
};
struct iseq_compile_data_ensure_node_stack;
typedef struct rb_compile_option_struct {
int inline_const_cache;
int peephole_optimization;
int tailcall_optimization;
int specialized_instruction;
int operands_unification;
int instructions_unification;
int stack_caching;
int trace_instruction;
} rb_compile_option_t;
struct iseq_compile_data {
/* GC is needed */
VALUE err_info;
VALUE mark_ary;
VALUE catch_table_ary; /* Array */
/* GC is not needed */
struct iseq_label_data *start_label;
struct iseq_label_data *end_label;
struct iseq_label_data *redo_label;
VALUE current_block;
VALUE loopval_popped; /* used by NODE_BREAK */
VALUE ensure_node;
VALUE for_iseq;
struct iseq_compile_data_ensure_node_stack *ensure_node_stack;
int cached_const;
struct iseq_compile_data_storage *storage_head;
struct iseq_compile_data_storage *storage_current;
int last_line;
int flip_cnt;
const rb_compile_option_t *option;
};
#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
#define GetISeqPtr(obj, ptr) \
GetCoreDataFromValue(obj, rb_iseq_t, ptr)
typedef struct rb_iseq_profile_struct {
VALUE count;
VALUE time_self;
VALUE time_cumu; /* cumulative */
} rb_iseq_profile_t;
struct rb_iseq_struct;
struct rb_iseq_struct {
/***************/
/* static data */
/***************/
VALUE type; /* instruction sequence type */
VALUE name; /* String: iseq name */
VALUE filename; /* file information where this sequence from */
VALUE *iseq; /* iseq (insn number and openrads) */
VALUE *iseq_encoded; /* encoded iseq */
unsigned long iseq_size;
VALUE mark_ary; /* Array: includes operands which should be GC marked */
/* insn info, must be freed */
struct iseq_insn_info_entry *insn_info_table;
unsigned long insn_info_size;
ID *local_table; /* must free */
int local_table_size;
/* method, class frame: sizeof(vars) + 1, block frame: sizeof(vars) */
int local_size;
/**
* argument information
*
* def m(a1, a2, ..., aM, # mandatory
* b1=(...), b2=(...), ..., bN=(...), # optinal
* *c, # rest
* d1, d2, ..., dO, # post
* &e) # block
* =>
*
* argc = M
* arg_rest = M+N+1 // or -1 if no rest arg
* arg_opts = N
* arg_opts_tbl = [ (N entries) ]
* arg_post_len = O // 0 if no post arguments
* arg_post_start = M+N+2
* arg_block = M+N + 1 + O + 1 // -1 if no block arg
* arg_simple = 0 if not simple arguments.
* = 1 if no opt, rest, post, block.
* = 2 if ambiguos block parameter ({|a|}).
* arg_size = argument size.
*/
int argc;
int arg_simple;
int arg_rest;
int arg_block;
int arg_opts;
int arg_post_len;
int arg_post_start;
int arg_size;
VALUE *arg_opt_table;
int stack_max; /* for stack overflow check */
/* catch table */
struct iseq_catch_table_entry *catch_table;
int catch_table_size;
/* for child iseq */
struct rb_iseq_struct *parent_iseq;
struct rb_iseq_struct *local_iseq;
/****************/
/* dynamic data */
/****************/
VALUE self;
/* block inlining */
NODE *node;
void *special_block_builder;
void *cached_special_block_builder;
VALUE cached_special_block;
/* klass/module nest information stack (cref) */
NODE *cref_stack;
VALUE klass;
/* misc */
ID defined_method_id; /* for define_method */
rb_iseq_profile_t profile;
/* used at compile time */
struct iseq_compile_data *compile_data;
};
typedef struct rb_iseq_struct rb_iseq_t;
#define RUBY_EVENT_NONE 0x00
#define RUBY_EVENT_LINE 0x01
#define RUBY_EVENT_CLASS 0x02
#define RUBY_EVENT_END 0x04
#define RUBY_EVENT_CALL 0x08
#define RUBY_EVENT_RETURN 0x10
#define RUBY_EVENT_C_CALL 0x20
#define RUBY_EVENT_C_RETURN 0x40
#define RUBY_EVENT_RAISE 0x80
#define RUBY_EVENT_ALL 0xff
#define RUBY_EVENT_VM 0x100
#define RUBY_EVENT_SWITCH 0x200
typedef unsigned int rb_event_flag_t;
typedef void (*rb_event_hook_func_t)(rb_event_flag_t, VALUE data, VALUE, ID, VALUE klass);
typedef struct rb_event_hook_struct {
rb_event_flag_t flag;
rb_event_hook_func_t func;
VALUE data;
struct rb_event_hook_struct *next;
} rb_event_hook_t;
#define GetVMPtr(obj, ptr) \
GetCoreDataFromValue(obj, rb_vm_t, ptr)
typedef struct rb_vm_struct {
VALUE self;
rb_thread_lock_t global_interpreter_lock;
struct rb_thread_struct *main_thread;
struct rb_thread_struct *running_thread;
st_table *living_threads;
VALUE thgroup_default;
VALUE last_status; /* $? */
int thread_abort_on_exception;
unsigned long trace_flag;
/* object management */
VALUE mark_object_ary;
/* load */
VALUE top_self;
VALUE loaded_features;
struct st_table *loading_table;
/* signal */
rb_atomic_t signal_buff[RUBY_NSIG];
rb_atomic_t bufferd_signal_size;
/* hook */
rb_event_hook_t *event_hooks;
} rb_vm_t;
typedef struct {
VALUE *pc; /* cfp[0] */
VALUE *sp; /* cfp[1] */
VALUE *bp; /* cfp[2] */
rb_iseq_t *iseq; /* cfp[3] */
VALUE flag; /* cfp[4] */
VALUE self; /* cfp[5] / block[0] */
VALUE *lfp; /* cfp[6] / block[1] */
VALUE *dfp; /* cfp[7] / block[2] */
rb_iseq_t *block_iseq; /* cfp[8] / block[3] */
VALUE proc; /* cfp[9] / block[4] */
ID method_id; /* cfp[10] saved in special case */
VALUE method_klass; /* cfp[11] saved in special case */
VALUE prof_time_self; /* cfp[12] */
VALUE prof_time_chld; /* cfp[13] */
} rb_control_frame_t;
typedef struct {
VALUE self; /* share with method frame if it's only block */
VALUE *lfp; /* share with method frame if it's only block */
VALUE *dfp; /* share with method frame if it's only block */
rb_iseq_t *iseq;
VALUE proc;
} rb_block_t;
#define GetThreadPtr(obj, ptr) \
GetCoreDataFromValue(obj, rb_thread_t, ptr)
enum rb_thread_status {
THREAD_TO_KILL,
THREAD_RUNNABLE,
THREAD_STOPPED,
THREAD_KILLED,
};
typedef jmp_buf rb_jmpbuf_t;
struct rb_vm_tag {
rb_jmpbuf_t buf;
VALUE tag;
VALUE retval;
struct rb_vm_tag *prev;
};
struct rb_vm_trap_tag {
struct rb_vm_trap_tag *prev;
};
#define RUBY_VM_VALUE_CACHE_SIZE 0x1000
#define USE_VALUE_CACHE 0
struct rb_thread_struct
{
VALUE self;
rb_vm_t *vm;
/* execution information */
VALUE *stack; /* must free, must mark */
unsigned long stack_size;
rb_control_frame_t *cfp;
int safe_level;
int raised_flag;
/* passing state */
int state;
/* for rb_iterate */
rb_block_t *passed_block;
/* for load(true) */
VALUE top_self;
VALUE top_wrapper;
/* eval env */
rb_block_t *base_block;
VALUE *local_lfp;
VALUE local_svar;
/* thread control */
rb_thread_id_t thread_id;
enum rb_thread_status status;
int priority;
native_thread_data_t native_thread_data;
VALUE thgroup;
VALUE value;
VALUE errinfo;
VALUE thrown_errinfo;
int exec_signal;
int interrupt_flag;
rb_unblock_function_t *unblock_function;
rb_thread_lock_t interrupt_lock;
struct rb_vm_tag *tag;
struct rb_vm_trap_tag *trap_tag;
int parse_in_eval;
/* storage */
st_table *local_storage;
#if USE_VALUE_CACHE
VALUE value_cache[RUBY_VM_VALUE_CACHE_SIZE + 1];
VALUE *value_cache_ptr;
#endif
struct rb_thread_struct *join_list_next;
struct rb_thread_struct *join_list_head;
VALUE first_proc;
VALUE first_args;
VALUE (*first_func)(ANYARGS);
void *first_func_arg;
/* for GC */
VALUE *machine_stack_start;
VALUE *machine_stack_end;
#ifdef __ia64
VALUE *machine_register_stack_start;
VALUE *machine_register_stack_end;
#endif
jmp_buf machine_regs;
int mark_stack_len;
/* statistics data for profiler */
VALUE stat_insn_usage;
/* tracer */
rb_event_hook_t *event_hooks;
rb_event_flag_t event_flags;
int tracing;
/* fiber */
VALUE fiber;
VALUE root_fiber;
rb_jmpbuf_t root_jmpbuf;
/* misc */
int method_missing_reason;
int abort_on_exception;
};
/* iseq.c */
VALUE rb_iseq_new(NODE*, VALUE, VALUE, VALUE, VALUE);
VALUE rb_iseq_new_with_bopt(NODE*, VALUE, VALUE, VALUE, VALUE, VALUE);
VALUE rb_iseq_new_with_opt(NODE*, VALUE, VALUE, VALUE, VALUE, const rb_compile_option_t*);
VALUE rb_iseq_compile(VALUE src, VALUE file, VALUE line);
VALUE ruby_iseq_disasm(VALUE self);
VALUE ruby_iseq_disasm_insn(VALUE str, VALUE *iseqval, int pos, rb_iseq_t *iseq, VALUE child);
const char *ruby_node_name(int node);
/* each thread has this size stack : 128KB */
#define RUBY_VM_THREAD_STACK_SIZE (128 * 1024)
struct global_entry {
struct global_variable *var;
ID id;
};
#define GetProcPtr(obj, ptr) \
GetCoreDataFromValue(obj, rb_proc_t, ptr)
typedef struct {
rb_block_t block;
VALUE envval; /* for GC mark */
VALUE blockprocval;
int safe_level;
int is_lambda;
NODE *special_cref_stack;
} rb_proc_t;
#define GetEnvPtr(obj, ptr) \
GetCoreDataFromValue(obj, rb_env_t, ptr)
typedef struct {
VALUE *env;
int env_size;
int local_size;
VALUE prev_envval; /* for GC mark */
rb_block_t block;
} rb_env_t;
#define GetBindingPtr(obj, ptr) \
GetCoreDataFromValue(obj, rb_binding_t, ptr)
typedef struct {
VALUE env;
NODE *cref_stack;
} rb_binding_t;
/* used by compile time and send insn */
#define VM_CALL_ARGS_SPLAT_BIT (0x01 << 1)
#define VM_CALL_ARGS_BLOCKARG_BIT (0x01 << 2)
#define VM_CALL_FCALL_BIT (0x01 << 3)
#define VM_CALL_VCALL_BIT (0x01 << 4)
#define VM_CALL_TAILCALL_BIT (0x01 << 5)
#define VM_CALL_TAILRECURSION_BIT (0x01 << 6)
#define VM_CALL_SUPER_BIT (0x01 << 7)
#define VM_CALL_SEND_BIT (0x01 << 8)
/* inline (method|const) cache */
#define NEW_INLINE_CACHE_ENTRY() NEW_WHILE(Qundef, 0, 0)
#define ic_klass u1.value
#define ic_method u2.node
#define ic_value u2.value
#define ic_vmstat u3.cnt
typedef NODE *IC;
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)
#define RUBY_VM_METHOD_NODE NODE_METHOD
#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) (BUILTIN_TYPE(ptr) == T_NODE)
#define RUBY_VM_NORMAL_ISEQ_P(ptr) \
(ptr && !RUBY_VM_IFUNC_P(ptr))
#define RUBY_VM_CLASS_SPECIAL_P(ptr) (((VALUE)(ptr)) & 0x02)
#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) - 5))
/* defined? */
#define DEFINED_IVAR INT2FIX(1)
#define DEFINED_IVAR2 INT2FIX(2)
#define DEFINED_GVAR INT2FIX(3)
#define DEFINED_CVAR INT2FIX(4)
#define DEFINED_CONST INT2FIX(5)
#define DEFINED_METHOD INT2FIX(6)
#define DEFINED_YIELD INT2FIX(7)
#define DEFINED_REF INT2FIX(8)
#define DEFINED_ZSUPER INT2FIX(9)
#define DEFINED_FUNC INT2FIX(10)
/* VM related object allocate functions */
/* TODO: should be static functions */
VALUE rb_thread_alloc(VALUE klass);
VALUE rb_proc_alloc(VALUE klass);
/* for debug */
extern void vm_stack_dump_raw(rb_thread_t *, rb_control_frame_t *);
#define SDR() vm_stack_dump_raw(GET_THREAD(), GET_THREAD()->cfp)
#define SDR2(cfp) vm_stack_dump_raw(GET_THREAD(), (cfp))
void rb_vm_bugreport(void);
/* functions about thread/vm execution */
VALUE rb_iseq_eval(VALUE iseqval);
void rb_enable_interrupt(void);
void rb_disable_interrupt(void);
int rb_thread_method_id_and_klass(rb_thread_t *th, ID *idp, VALUE *klassp);
VALUE vm_eval_body(rb_thread_t *th);
VALUE vm_invoke_proc(rb_thread_t *th, rb_proc_t *proc, VALUE self, int argc, VALUE *argv);
VALUE vm_make_proc(rb_thread_t *th, rb_control_frame_t *cfp, rb_block_t *block);
VALUE vm_make_env_object(rb_thread_t *th, rb_control_frame_t *cfp);
VALUE vm_backtrace(rb_thread_t *, int);
VALUE vm_yield(rb_thread_t *th, int argc, VALUE *argv);
VALUE vm_call0(rb_thread_t *th, VALUE klass, VALUE recv, VALUE id, ID oid,
int argc, const VALUE *argv, NODE *body, int nosuper);
int vm_get_sourceline(rb_control_frame_t *);
RUBY_EXTERN VALUE sysstack_error;
/* for thread */
#if RUBY_VM_THREAD_MODEL == 2
extern rb_thread_t *ruby_current_thread;
extern rb_vm_t *ruby_current_vm;
#define GET_VM() ruby_current_vm
#define GET_THREAD() ruby_current_thread
#define rb_thread_set_current_raw(th) (ruby_current_thread = th)
#define rb_thread_set_current(th) do { \
rb_thread_set_current_raw(th); \
th->vm->running_thread = th; \
} while (0)
#else
#error "unsupported thread model"
#endif
void rb_thread_execute_interrupts(rb_thread_t *);
#define RUBY_VM_CHECK_INTS_TH(th) do { \
if(th->interrupt_flag){ \
/* TODO: trap something event */ \
rb_thread_execute_interrupts(th); \
} \
} while (0)
#define RUBY_VM_CHECK_INTS() \
RUBY_VM_CHECK_INTS_TH(GET_THREAD())
/* tracer */
static void inline
exec_event_hooks(rb_event_hook_t *hook, rb_event_flag_t flag, VALUE self, ID id, VALUE klass)
{
while (hook) {
if (flag & hook->flag) {
(*hook->func)(flag, hook->data, self, id, klass);
}
hook = hook->next;
}
}
#define EXEC_EVENT_HOOK(th, flag, self, id, klass) do { \
rb_event_flag_t wait_event__ = th->event_flags; \
if (UNLIKELY(wait_event__)) { \
if (wait_event__ & (flag | RUBY_EVENT_VM)) { \
VALUE self__ = (self), klass__ = (klass); \
ID id__ = (id); \
if (wait_event__ & flag) { \
exec_event_hooks(th->event_hooks, flag, self__, id__, klass__); \
} \
if (wait_event__ & RUBY_EVENT_VM) { \
exec_event_hooks(th->vm->event_hooks, flag, self__, id__, klass__); \
} \
} \
} \
} while (0)
#endif /* RUBY_CORE_H */
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