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ruby--ruby/vm_core.h
normal 475b4aa40b simplify altstack and enable reuse with thread cache 
Instead of allocating and registering the altstack in different
places, do it together to reduce code and improve readability.
When thread cache is enabled, storing altstack in rb_thread_t
is wasteful and we may reuse altstack in the same pthread.

This also lets us clearly allow use of xmalloc to allow GC to
recover from ENOMEM.

[ruby-core:85621] [Feature #14487]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63213 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2018-04-20 21:38:27 +00:00

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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
#include "ruby_assert.h"
#if VM_CHECK_MODE > 0
#define VM_ASSERT(expr) RUBY_ASSERT_MESG_WHEN(VM_CHECK_MODE > 0, expr, #expr)
#define VM_UNREACHABLE(func) rb_bug(#func ": unreachable")
#else
#define VM_ASSERT(expr) ((void)0)
#define VM_UNREACHABLE(func) UNREACHABLE
#endif
#define RUBY_VM_THREAD_MODEL 2
/*
* implementation selector of get_insn_info algorithm
* 0: linear search
* 1: binary search
* 2: succinct bitvector
*/
#ifndef VM_INSN_INFO_TABLE_IMPL
# define VM_INSN_INFO_TABLE_IMPL 2
#endif
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "node.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
#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
void *rb_register_sigaltstack(void);
# define RB_ALTSTACK_INIT(var) var = rb_register_sigaltstack()
# define RB_ALTSTACK_FREE(var) xfree(var)
#else /* noop */
# define RB_ALTSTACK_INIT(var)
# define RB_ALTSTACK_FREE(var)
#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
/* 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;
typedef signed long rb_snum_t;
enum ruby_tag_type {
RUBY_TAG_NONE = 0x0,
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_NONE RUBY_TAG_NONE
#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_FCALL = 0x04,
MISSING_VCALL = 0x08,
MISSING_SUPER = 0x10,
MISSING_MISSING = 0x20,
MISSING_NONE = 0x40
};
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 {
VALUE block_handler;
VALUE recv;
int argc;
};
struct rb_call_cache;
struct rb_execution_context_struct;
typedef VALUE (*vm_call_handler)(struct rb_execution_context_struct *ec, 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 CoreDataFromValue(obj, type) (type*)DATA_PTR(obj)
#else
#define CoreDataFromValue(obj, type) (type*)rb_data_object_get(obj)
#endif
#define GetCoreDataFromValue(obj, type, ptr) ((ptr) = CoreDataFromValue((obj), type))
typedef struct rb_iseq_location_struct {
VALUE pathobj; /* String (path) or Array [path, realpath]. Frozen. */
VALUE base_label; /* String */
VALUE label; /* String */
VALUE first_lineno; /* TODO: may be unsigned short */
rb_code_location_t code_location;
} rb_iseq_location_t;
#define PATHOBJ_PATH 0
#define PATHOBJ_REALPATH 1
static inline VALUE
pathobj_path(VALUE pathobj)
{
if (RB_TYPE_P(pathobj, T_STRING)) {
return pathobj;
}
else {
VM_ASSERT(RB_TYPE_P(pathobj, T_ARRAY));
return RARRAY_AREF(pathobj, PATHOBJ_PATH);
}
}
static inline VALUE
pathobj_realpath(VALUE pathobj)
{
if (RB_TYPE_P(pathobj, T_STRING)) {
return pathobj;
}
else {
VM_ASSERT(RB_TYPE_P(pathobj, T_ARRAY));
return RARRAY_AREF(pathobj, PATHOBJ_REALPATH);
}
}
/* Forward declarations */
struct rb_mjit_unit;
struct rb_execution_context_struct;
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_PLAIN
} type; /* instruction sequence type */
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 */
struct iseq_insn_info {
const struct iseq_insn_info_entry *body;
unsigned int *positions;
unsigned int size;
#if VM_INSN_INFO_TABLE_IMPL == 2
struct succ_index_table *succ_index_table;
#endif
} insns_info;
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 */
struct {
rb_snum_t flip_count;
VALUE coverage;
VALUE original_iseq;
} variable;
unsigned int local_table_size;
unsigned int is_size;
unsigned int ci_size;
unsigned int ci_kw_size;
unsigned int stack_max; /* for stack overflow check */
/* The following fields are MJIT related info. */
VALUE (*jit_func)(struct rb_execution_context_struct *,
struct rb_control_frame_struct *); /* function pointer for loaded native code */
long unsigned total_calls; /* number of total calls with `mjit_exec()` */
struct rb_mjit_unit *jit_unit;
char catch_except_p; /* If a frame of this ISeq may catch exception, set TRUE */
};
/* T_IMEMO/iseq */
/* typedef rb_iseq_t is in method.h */
struct rb_iseq_struct {
VALUE flags;
VALUE reserved1;
struct rb_iseq_constant_body *body;
union { /* 4, 5 words */
struct iseq_compile_data *compile_data; /* used at compile time */
struct {
VALUE obj;
int index;
} loader;
rb_event_flag_t trace_events;
} aux;
};
#ifndef USE_LAZY_LOAD
#define USE_LAZY_LOAD 0
#endif
#if USE_LAZY_LOAD
const rb_iseq_t *rb_iseq_complete(const rb_iseq_t *iseq);
#endif
static inline const rb_iseq_t *
rb_iseq_check(const rb_iseq_t *iseq)
{
#if USE_LAZY_LOAD
if (iseq->body == NULL) {
rb_iseq_complete((rb_iseq_t *)iseq);
}
#endif
return iseq;
}
enum ruby_special_exceptions {
ruby_error_reenter,
ruby_error_nomemory,
ruby_error_sysstack,
ruby_error_stackfatal,
ruby_error_stream_closed,
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_UMINUS,
BOP_MAX,
BOP_MIN,
BOP_CALL,
BOP_LAST_
};
#define GetVMPtr(obj, ptr) \
GetCoreDataFromValue((obj), rb_vm_t, (ptr))
struct rb_vm_struct;
typedef void rb_vm_at_exit_func(struct rb_vm_struct*);
typedef struct rb_at_exit_list {
rb_vm_at_exit_func *func;
struct rb_at_exit_list *next;
} rb_at_exit_list;
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;
#ifdef USE_SIGALTSTACK
void *main_altstack;
#endif
rb_serial_t fork_gen;
struct list_head waiting_fds; /* <=> struct waiting_fd */
struct list_head living_threads;
VALUE thgroup_default;
int living_thread_num;
unsigned int running: 1;
unsigned int thread_abort_on_exception: 1;
unsigned int thread_report_on_exception: 1;
unsigned int safe_level_: 1;
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[RUBY_NSIG];
unsigned char safe[RUBY_NSIG];
} trap_list;
/* 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;
int coverage_mode;
VALUE defined_module_hash;
struct rb_objspace *objspace;
rb_at_exit_list *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 */
#if defined(__powerpc64__)
#define RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN ( 32 * 1024 * sizeof(VALUE)) /* 128 KB or 256 KB */
#else
#define RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN ( 16 * 1024 * sizeof(VALUE)) /* 64 KB or 128 KB */
#endif
/* optimize insn */
#define INTEGER_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 NIL_REDEFINED_OP_FLAG (1 << 9)
#define TRUE_REDEFINED_OP_FLAG (1 << 10)
#define FALSE_REDEFINED_OP_FLAG (1 << 11)
#define PROC_REDEFINED_OP_FLAG (1 << 12)
#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
struct rb_captured_block {
VALUE self;
const VALUE *ep;
union {
const rb_iseq_t *iseq;
const struct vm_ifunc *ifunc;
VALUE val;
} code;
};
enum rb_block_handler_type {
block_handler_type_iseq,
block_handler_type_ifunc,
block_handler_type_symbol,
block_handler_type_proc
};
enum rb_block_type {
block_type_iseq,
block_type_ifunc,
block_type_symbol,
block_type_proc
};
struct rb_block {
union {
struct rb_captured_block captured;
VALUE symbol;
VALUE proc;
} as;
enum rb_block_type type;
};
typedef struct rb_control_frame_struct {
const VALUE *pc; /* cfp[0] */
VALUE *sp; /* cfp[1] */
const rb_iseq_t *iseq; /* cfp[2] */
VALUE self; /* cfp[3] / block[0] */
const VALUE *ep; /* cfp[4] / block[1] */
const void *block_code; /* cfp[5] / block[2] */ /* iseq or ifunc */
const VALUE *bp; /* cfp[6] */
#if VM_DEBUG_BP_CHECK
VALUE *bp_check; /* cfp[7] */
#endif
} rb_control_frame_t;
extern const rb_data_type_t ruby_threadptr_data_type;
static inline struct rb_thread_struct *
rb_thread_ptr(VALUE thval)
{
return (struct rb_thread_struct *)rb_check_typeddata(thval, &ruby_threadptr_data_type);
}
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 EC_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;
enum ruby_tag_type state;
};
STATIC_ASSERT(rb_vm_tag_buf_offset, offsetof(struct rb_vm_tag, buf) > 0);
STATIC_ASSERT(rb_vm_tag_buf_end,
offsetof(struct rb_vm_tag, buf) + sizeof(rb_jmpbuf_t) <
sizeof(struct rb_vm_tag));
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_execution_context_struct {
/* execution information */
VALUE *vm_stack; /* must free, must mark */
size_t vm_stack_size; /* size in word (byte size / sizeof(VALUE)) */
rb_control_frame_t *cfp;
struct rb_vm_tag *tag;
struct rb_vm_protect_tag *protect_tag;
int raised_flag;
/* interrupt flags */
rb_atomic_t interrupt_flag;
unsigned long interrupt_mask;
rb_fiber_t *fiber_ptr;
struct rb_thread_struct *thread_ptr;
/* storage (ec (fiber) local) */
st_table *local_storage;
VALUE local_storage_recursive_hash;
VALUE local_storage_recursive_hash_for_trace;
/* eval env */
const VALUE *root_lep;
VALUE root_svar;
/* ensure & callcc */
rb_ensure_list_t *ensure_list;
/* trace information */
struct rb_trace_arg_struct *trace_arg;
/* temporary places */
VALUE errinfo;
VALUE passed_block_handler; /* for rb_iterate */
const rb_callable_method_entry_t *passed_bmethod_me; /* for bmethod */
enum method_missing_reason method_missing_reason;
/* 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;
} rb_execution_context_t;
void ec_set_vm_stack(rb_execution_context_t *ec, VALUE *stack, size_t size);
typedef struct rb_thread_struct {
struct list_node vmlt_node;
VALUE self;
rb_vm_t *vm;
rb_execution_context_t *ec;
VALUE last_status; /* $? */
/* for cfunc */
struct rb_calling_info *calling;
/* for load(true) */
VALUE top_self;
VALUE top_wrapper;
/* 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 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;
/* interrupt management */
rb_nativethread_lock_t interrupt_lock;
struct rb_unblock_callback unblock;
VALUE locking_mutex;
struct rb_mutex_struct *keeping_mutexes;
rb_thread_list_t *join_list;
VALUE first_proc;
VALUE first_args;
VALUE (*first_func)(ANYARGS);
/* statistics data for profiler */
VALUE stat_insn_usage;
/* fiber */
rb_fiber_t *root_fiber;
rb_jmpbuf_t root_jmpbuf;
/* misc */
unsigned int abort_on_exception: 1;
unsigned int report_on_exception: 1;
uint32_t running_time_us; /* 12500..800000 */
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 (const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent, enum iseq_type);
rb_iseq_t *rb_iseq_new_top (const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath, const rb_iseq_t *parent);
rb_iseq_t *rb_iseq_new_main (const rb_ast_body_t *ast, VALUE path, VALUE realpath, const rb_iseq_t *parent);
rb_iseq_t *rb_iseq_new_with_opt(const rb_ast_body_t *ast, VALUE name, VALUE path, VALUE realpath, VALUE first_lineno,
const rb_iseq_t *parent, enum iseq_type, const rb_compile_option_t*);
rb_iseq_t *rb_iseq_new_ifunc(const struct vm_ifunc *ifunc, VALUE name, VALUE path, VALUE realpath, VALUE first_lineno,
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, const struct rb_block *base_block);
rb_iseq_t *rb_iseq_compile_with_option(VALUE src, VALUE file, VALUE realpath, VALUE line, const struct rb_block *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);
VALUE rb_iseq_coverage(const rb_iseq_t *iseq);
RUBY_EXTERN VALUE rb_cISeq;
RUBY_EXTERN VALUE rb_cRubyVM;
RUBY_EXTERN VALUE rb_mRubyVMFrozenCore;
RUBY_SYMBOL_EXPORT_END
#define GetProcPtr(obj, ptr) \
GetCoreDataFromValue((obj), rb_proc_t, (ptr))
typedef struct {
const struct rb_block block;
unsigned int is_from_method: 1; /* bool */
unsigned int is_lambda: 1; /* bool */
} rb_proc_t;
typedef struct {
VALUE flags; /* imemo header */
const rb_iseq_t *iseq;
const VALUE *ep;
const VALUE *env;
unsigned int env_size;
} 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 {
const struct rb_block block;
const VALUE pathobj;
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
enum vm_call_flag_bits {
VM_CALL_ARGS_SPLAT_bit, /* m(*args) */
VM_CALL_ARGS_BLOCKARG_bit, /* m(&block) */
VM_CALL_FCALL_bit, /* m(...) */
VM_CALL_VCALL_bit, /* m */
VM_CALL_ARGS_SIMPLE_bit, /* (ci->flag & (SPLAT|BLOCKARG)) && blockiseq == NULL && ci->kw_arg == NULL */
VM_CALL_BLOCKISEQ_bit, /* has blockiseq */
VM_CALL_KWARG_bit, /* has kwarg */
VM_CALL_KW_SPLAT_bit, /* m(**opts) */
VM_CALL_TAILCALL_bit, /* located at tail position */
VM_CALL_SUPER_bit, /* super */
VM_CALL_OPT_SEND_bit, /* internal flag */
VM_CALL__END
};
#define VM_CALL_ARGS_SPLAT (0x01 << VM_CALL_ARGS_SPLAT_bit)
#define VM_CALL_ARGS_BLOCKARG (0x01 << VM_CALL_ARGS_BLOCKARG_bit)
#define VM_CALL_FCALL (0x01 << VM_CALL_FCALL_bit)
#define VM_CALL_VCALL (0x01 << VM_CALL_VCALL_bit)
#define VM_CALL_ARGS_SIMPLE (0x01 << VM_CALL_ARGS_SIMPLE_bit)
#define VM_CALL_BLOCKISEQ (0x01 << VM_CALL_BLOCKISEQ_bit)
#define VM_CALL_KWARG (0x01 << VM_CALL_KWARG_bit)
#define VM_CALL_KW_SPLAT (0x01 << VM_CALL_KW_SPLAT_bit)
#define VM_CALL_TAILCALL (0x01 << VM_CALL_TAILCALL_bit)
#define VM_CALL_SUPER (0x01 << VM_CALL_SUPER_bit)
#define VM_CALL_OPT_SEND (0x01 << VM_CALL_OPT_SEND_bit)
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 */
};
/* inline cache */
typedef struct iseq_inline_cache_entry *IC;
typedef union iseq_inline_storage_entry *ISE;
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_execution_context_t *, rb_control_frame_t *);
#define VM_TAGGED_PTR_SET(p, tag) ((VALUE)(p) | (tag))
#define VM_TAGGED_PTR_REF(v, mask) ((void *)((v) & ~mask))
#define GC_GUARDED_PTR(p) VM_TAGGED_PTR_SET((p), 0x01)
#define GC_GUARDED_PTR_REF(p) VM_TAGGED_PTR_REF((p), 0x03)
#define GC_GUARDED_PTR_P(p) (((VALUE)(p)) & 0x01)
enum {
/* Frame/Environment flag bits:
* MMMM MMMM MMMM MMMM ____ __FF FFFF EEEX (LSB)
*
* X : tag for GC marking (It seems as Fixnum)
* EEE : 3 bits Env flags
* FF..: 6 bits Frame flags
* MM..: 15 bits frame magic (to check frame corruption)
*/
/* frame types */
VM_FRAME_MAGIC_METHOD = 0x11110001,
VM_FRAME_MAGIC_BLOCK = 0x22220001,
VM_FRAME_MAGIC_CLASS = 0x33330001,
VM_FRAME_MAGIC_TOP = 0x44440001,
VM_FRAME_MAGIC_CFUNC = 0x55550001,
VM_FRAME_MAGIC_IFUNC = 0x66660001,
VM_FRAME_MAGIC_EVAL = 0x77770001,
VM_FRAME_MAGIC_RESCUE = 0x78880001,
VM_FRAME_MAGIC_DUMMY = 0x79990001,
VM_FRAME_MAGIC_MASK = 0x7fff0001,
/* frame flag */
VM_FRAME_FLAG_PASSED = 0x0010,
VM_FRAME_FLAG_FINISH = 0x0020,
VM_FRAME_FLAG_BMETHOD = 0x0040,
VM_FRAME_FLAG_CFRAME = 0x0080,
VM_FRAME_FLAG_LAMBDA = 0x0100,
VM_FRAME_FLAG_MODIFIED_BLOCK_PARAM = 0x0200,
/* env flag */
VM_ENV_FLAG_LOCAL = 0x0002,
VM_ENV_FLAG_ESCAPED = 0x0004,
VM_ENV_FLAG_WB_REQUIRED = 0x0008
};
#define VM_ENV_DATA_SIZE ( 3)
#define VM_ENV_DATA_INDEX_ME_CREF (-2) /* ep[-2] */
#define VM_ENV_DATA_INDEX_SPECVAL (-1) /* ep[-1] */
#define VM_ENV_DATA_INDEX_FLAGS ( 0) /* ep[ 0] */
#define VM_ENV_DATA_INDEX_ENV ( 1) /* ep[ 1] */
#define VM_ENV_DATA_INDEX_ENV_PROC ( 2) /* ep[ 2] */
#define VM_ENV_INDEX_LAST_LVAR (-VM_ENV_DATA_SIZE)
static inline void VM_FORCE_WRITE_SPECIAL_CONST(const VALUE *ptr, VALUE special_const_value);
static inline void
VM_ENV_FLAGS_SET(const VALUE *ep, VALUE flag)
{
VALUE flags = ep[VM_ENV_DATA_INDEX_FLAGS];
VM_ASSERT(FIXNUM_P(flags));
VM_FORCE_WRITE_SPECIAL_CONST(&ep[VM_ENV_DATA_INDEX_FLAGS], flags | flag);
}
static inline void
VM_ENV_FLAGS_UNSET(const VALUE *ep, VALUE flag)
{
VALUE flags = ep[VM_ENV_DATA_INDEX_FLAGS];
VM_ASSERT(FIXNUM_P(flags));
VM_FORCE_WRITE_SPECIAL_CONST(&ep[VM_ENV_DATA_INDEX_FLAGS], flags & ~flag);
}
static inline unsigned long
VM_ENV_FLAGS(const VALUE *ep, long flag)
{
VALUE flags = ep[VM_ENV_DATA_INDEX_FLAGS];
VM_ASSERT(FIXNUM_P(flags));
return flags & flag;
}
static inline unsigned long
VM_FRAME_TYPE(const rb_control_frame_t *cfp)
{
return VM_ENV_FLAGS(cfp->ep, VM_FRAME_MAGIC_MASK);
}
static inline int
VM_FRAME_LAMBDA_P(const rb_control_frame_t *cfp)
{
return VM_ENV_FLAGS(cfp->ep, VM_FRAME_FLAG_LAMBDA) != 0;
}
static inline int
VM_FRAME_FINISHED_P(const rb_control_frame_t *cfp)
{
return VM_ENV_FLAGS(cfp->ep, VM_FRAME_FLAG_FINISH) != 0;
}
static inline int
VM_FRAME_BMETHOD_P(const rb_control_frame_t *cfp)
{
return VM_ENV_FLAGS(cfp->ep, VM_FRAME_FLAG_BMETHOD) != 0;
}
static inline int
rb_obj_is_iseq(VALUE iseq)
{
return imemo_type_p(iseq, imemo_iseq);
}
#if VM_CHECK_MODE > 0
#define RUBY_VM_NORMAL_ISEQ_P(iseq) rb_obj_is_iseq((VALUE)iseq)
#endif
static inline int
VM_FRAME_CFRAME_P(const rb_control_frame_t *cfp)
{
int cframe_p = VM_ENV_FLAGS(cfp->ep, VM_FRAME_FLAG_CFRAME) != 0;
VM_ASSERT(RUBY_VM_NORMAL_ISEQ_P(cfp->iseq) != cframe_p);
return cframe_p;
}
static inline int
VM_FRAME_RUBYFRAME_P(const rb_control_frame_t *cfp)
{
return !VM_FRAME_CFRAME_P(cfp);
}
#define RUBYVM_CFUNC_FRAME_P(cfp) \
(VM_FRAME_TYPE(cfp) == VM_FRAME_MAGIC_CFUNC)
#define VM_GUARDED_PREV_EP(ep) GC_GUARDED_PTR(ep)
#define VM_BLOCK_HANDLER_NONE 0
static inline int
VM_ENV_LOCAL_P(const VALUE *ep)
{
return VM_ENV_FLAGS(ep, VM_ENV_FLAG_LOCAL) ? 1 : 0;
}
static inline const VALUE *
VM_ENV_PREV_EP(const VALUE *ep)
{
VM_ASSERT(VM_ENV_LOCAL_P(ep) == 0);
return GC_GUARDED_PTR_REF(ep[VM_ENV_DATA_INDEX_SPECVAL]);
}
static inline VALUE
VM_ENV_BLOCK_HANDLER(const VALUE *ep)
{
VM_ASSERT(VM_ENV_LOCAL_P(ep));
return ep[VM_ENV_DATA_INDEX_SPECVAL];
}
#if VM_CHECK_MODE > 0
int rb_vm_ep_in_heap_p(const VALUE *ep);
#endif
static inline int
VM_ENV_ESCAPED_P(const VALUE *ep)
{
VM_ASSERT(rb_vm_ep_in_heap_p(ep) == !!VM_ENV_FLAGS(ep, VM_ENV_FLAG_ESCAPED));
return VM_ENV_FLAGS(ep, VM_ENV_FLAG_ESCAPED) ? 1 : 0;
}
#if VM_CHECK_MODE > 0
static inline int
vm_assert_env(VALUE obj)
{
VM_ASSERT(imemo_type_p(obj, imemo_env));
return 1;
}
#endif
static inline VALUE
VM_ENV_ENVVAL(const VALUE *ep)
{
VALUE envval = ep[VM_ENV_DATA_INDEX_ENV];
VM_ASSERT(VM_ENV_ESCAPED_P(ep));
VM_ASSERT(vm_assert_env(envval));
return envval;
}
static inline const rb_env_t *
VM_ENV_ENVVAL_PTR(const VALUE *ep)
{
return (const rb_env_t *)VM_ENV_ENVVAL(ep);
}
static inline VALUE
VM_ENV_PROCVAL(const VALUE *ep)
{
VM_ASSERT(VM_ENV_ESCAPED_P(ep));
VM_ASSERT(VM_ENV_LOCAL_P(ep));
VM_ASSERT(VM_ENV_BLOCK_HANDLER(ep) != VM_BLOCK_HANDLER_NONE);
return ep[VM_ENV_DATA_INDEX_ENV_PROC];
}
static inline const rb_env_t *
vm_env_new(VALUE *env_ep, VALUE *env_body, unsigned int env_size, const rb_iseq_t *iseq)
{
rb_env_t *env = (rb_env_t *)rb_imemo_new(imemo_env, (VALUE)env_ep, (VALUE)env_body, 0, (VALUE)iseq);
env->env_size = env_size;
env_ep[VM_ENV_DATA_INDEX_ENV] = (VALUE)env;
return env;
}
static inline void
VM_FORCE_WRITE(const VALUE *ptr, VALUE v)
{
*((VALUE *)ptr) = v;
}
static inline void
VM_FORCE_WRITE_SPECIAL_CONST(const VALUE *ptr, VALUE special_const_value)
{
VM_ASSERT(RB_SPECIAL_CONST_P(special_const_value));
VM_FORCE_WRITE(ptr, special_const_value);
}
static inline void
VM_STACK_ENV_WRITE(const VALUE *ep, int index, VALUE v)
{
VM_ASSERT(VM_ENV_FLAGS(ep, VM_ENV_FLAG_WB_REQUIRED) == 0);
VM_FORCE_WRITE(&ep[index], v);
}
const VALUE *rb_vm_ep_local_ep(const VALUE *ep);
const VALUE *rb_vm_proc_local_ep(VALUE proc);
void rb_vm_block_ep_update(VALUE obj, const struct rb_block *dst, const VALUE *ep);
void rb_vm_block_copy(VALUE obj, const struct rb_block *dst, const struct rb_block *src);
VALUE rb_vm_frame_block_handler(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_VALID_CONTROL_FRAME_P(cfp, ecfp) \
((void *)(ecfp) > (void *)(cfp))
static inline const rb_control_frame_t *
RUBY_VM_END_CONTROL_FRAME(const rb_execution_context_t *ec)
{
return (rb_control_frame_t *)(ec->vm_stack + ec->vm_stack_size);
}
static inline int
RUBY_VM_CONTROL_FRAME_STACK_OVERFLOW_P(const rb_execution_context_t *ec, const rb_control_frame_t *cfp)
{
return !RUBY_VM_VALID_CONTROL_FRAME_P(cfp, RUBY_VM_END_CONTROL_FRAME(ec));
}
static inline int
VM_BH_ISEQ_BLOCK_P(VALUE block_handler)
{
if ((block_handler & 0x03) == 0x01) {
#if VM_CHECK_MODE > 0
struct rb_captured_block *captured = VM_TAGGED_PTR_REF(block_handler, 0x03);
VM_ASSERT(imemo_type_p(captured->code.val, imemo_iseq));
#endif
return 1;
}
else {
return 0;
}
}
static inline VALUE
VM_BH_FROM_ISEQ_BLOCK(const struct rb_captured_block *captured)
{
VALUE block_handler = VM_TAGGED_PTR_SET(captured, 0x01);
VM_ASSERT(VM_BH_ISEQ_BLOCK_P(block_handler));
return block_handler;
}
static inline const struct rb_captured_block *
VM_BH_TO_ISEQ_BLOCK(VALUE block_handler)
{
struct rb_captured_block *captured = VM_TAGGED_PTR_REF(block_handler, 0x03);
VM_ASSERT(VM_BH_ISEQ_BLOCK_P(block_handler));
return captured;
}
static inline int
VM_BH_IFUNC_P(VALUE block_handler)
{
if ((block_handler & 0x03) == 0x03) {
#if VM_CHECK_MODE > 0
struct rb_captured_block *captured = (void *)(block_handler & ~0x03);
VM_ASSERT(imemo_type_p(captured->code.val, imemo_ifunc));
#endif
return 1;
}
else {
return 0;
}
}
static inline VALUE
VM_BH_FROM_IFUNC_BLOCK(const struct rb_captured_block *captured)
{
VALUE block_handler = VM_TAGGED_PTR_SET(captured, 0x03);
VM_ASSERT(VM_BH_IFUNC_P(block_handler));
return block_handler;
}
static inline const struct rb_captured_block *
VM_BH_TO_IFUNC_BLOCK(VALUE block_handler)
{
struct rb_captured_block *captured = VM_TAGGED_PTR_REF(block_handler, 0x03);
VM_ASSERT(VM_BH_IFUNC_P(block_handler));
return captured;
}
static inline const struct rb_captured_block *
VM_BH_TO_CAPT_BLOCK(VALUE block_handler)
{
struct rb_captured_block *captured = VM_TAGGED_PTR_REF(block_handler, 0x03);
VM_ASSERT(VM_BH_IFUNC_P(block_handler) || VM_BH_ISEQ_BLOCK_P(block_handler));
return captured;
}
static inline enum rb_block_handler_type
vm_block_handler_type(VALUE block_handler)
{
if (VM_BH_ISEQ_BLOCK_P(block_handler)) {
return block_handler_type_iseq;
}
else if (VM_BH_IFUNC_P(block_handler)) {
return block_handler_type_ifunc;
}
else if (SYMBOL_P(block_handler)) {
return block_handler_type_symbol;
}
else {
VM_ASSERT(rb_obj_is_proc(block_handler));
return block_handler_type_proc;
}
}
static inline void
vm_block_handler_verify(MAYBE_UNUSED(VALUE block_handler))
{
VM_ASSERT(block_handler == VM_BLOCK_HANDLER_NONE ||
(vm_block_handler_type(block_handler), 1));
}
static inline enum rb_block_type
vm_block_type(const struct rb_block *block)
{
#if VM_CHECK_MODE > 0
switch (block->type) {
case block_type_iseq:
VM_ASSERT(imemo_type_p(block->as.captured.code.val, imemo_iseq));
break;
case block_type_ifunc:
VM_ASSERT(imemo_type_p(block->as.captured.code.val, imemo_ifunc));
break;
case block_type_symbol:
VM_ASSERT(SYMBOL_P(block->as.symbol));
break;
case block_type_proc:
VM_ASSERT(rb_obj_is_proc(block->as.proc));
break;
}
#endif
return block->type;
}
static inline void
vm_block_type_set(const struct rb_block *block, enum rb_block_type type)
{
struct rb_block *mb = (struct rb_block *)block;
mb->type = type;
}
static inline const struct rb_block *
vm_proc_block(VALUE procval)
{
VM_ASSERT(rb_obj_is_proc(procval));
return &((rb_proc_t *)RTYPEDDATA_DATA(procval))->block;
}
static inline const rb_iseq_t *vm_block_iseq(const struct rb_block *block);
static inline const VALUE *vm_block_ep(const struct rb_block *block);
static inline const rb_iseq_t *
vm_proc_iseq(VALUE procval)
{
return vm_block_iseq(vm_proc_block(procval));
}
static inline const VALUE *
vm_proc_ep(VALUE procval)
{
return vm_block_ep(vm_proc_block(procval));
}
static inline const rb_iseq_t *
vm_block_iseq(const struct rb_block *block)
{
switch (vm_block_type(block)) {
case block_type_iseq: return rb_iseq_check(block->as.captured.code.iseq);
case block_type_proc: return vm_proc_iseq(block->as.proc);
case block_type_ifunc:
case block_type_symbol: return NULL;
}
VM_UNREACHABLE(vm_block_iseq);
return NULL;
}
static inline const VALUE *
vm_block_ep(const struct rb_block *block)
{
switch (vm_block_type(block)) {
case block_type_iseq:
case block_type_ifunc: return block->as.captured.ep;
case block_type_proc: return vm_proc_ep(block->as.proc);
case block_type_symbol: return NULL;
}
VM_UNREACHABLE(vm_block_ep);
return NULL;
}
static inline VALUE
vm_block_self(const struct rb_block *block)
{
switch (vm_block_type(block)) {
case block_type_iseq:
case block_type_ifunc:
return block->as.captured.self;
case block_type_proc:
return vm_block_self(vm_proc_block(block->as.proc));
case block_type_symbol:
return Qundef;
}
VM_UNREACHABLE(vm_block_self);
return Qundef;
}
static inline VALUE
VM_BH_TO_SYMBOL(VALUE block_handler)
{
VM_ASSERT(SYMBOL_P(block_handler));
return block_handler;
}
static inline VALUE
VM_BH_FROM_SYMBOL(VALUE symbol)
{
VM_ASSERT(SYMBOL_P(symbol));
return symbol;
}
static inline VALUE
VM_BH_TO_PROC(VALUE block_handler)
{
VM_ASSERT(rb_obj_is_proc(block_handler));
return block_handler;
}
static inline VALUE
VM_BH_FROM_PROC(VALUE procval)
{
VM_ASSERT(rb_obj_is_proc(procval));
return procval;
}
/* VM related object allocate functions */
VALUE rb_thread_alloc(VALUE klass);
VALUE rb_binding_alloc(VALUE klass);
VALUE rb_proc_alloc(VALUE klass);
VALUE rb_proc_dup(VALUE self);
/* for debug */
extern void rb_vmdebug_stack_dump_raw(const rb_execution_context_t *ec, const rb_control_frame_t *cfp);
extern void rb_vmdebug_debug_print_pre(const rb_execution_context_t *ec, const rb_control_frame_t *cfp, const VALUE *_pc);
extern void rb_vmdebug_debug_print_post(const rb_execution_context_t *ec, const rb_control_frame_t *cfp);
#define SDR() rb_vmdebug_stack_dump_raw(GET_EC(), GET_EC()->cfp)
#define SDR2(cfp) rb_vmdebug_stack_dump_raw(GET_EC(), (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);
VALUE rb_iseq_path(const rb_iseq_t *iseq);
VALUE rb_iseq_realpath(const rb_iseq_t *iseq);
RUBY_SYMBOL_EXPORT_END
VALUE rb_iseq_pathobj_new(VALUE path, VALUE realpath);
void rb_iseq_pathobj_set(const rb_iseq_t *iseq, VALUE path, VALUE realpath);
int rb_ec_frame_method_id_and_class(const rb_execution_context_t *ec, ID *idp, ID *called_idp, VALUE *klassp);
void rb_ec_setup_exception(const rb_execution_context_t *ec, VALUE mesg, VALUE cause);
VALUE rb_vm_invoke_proc(rb_execution_context_t *ec, rb_proc_t *proc, int argc, const VALUE *argv, VALUE block_handler);
VALUE rb_vm_make_proc_lambda(const rb_execution_context_t *ec, const struct rb_captured_block *captured, VALUE klass, int8_t is_lambda);
static inline VALUE
rb_vm_make_proc(const rb_execution_context_t *ec, const struct rb_captured_block *captured, VALUE klass)
{
return rb_vm_make_proc_lambda(ec, captured, klass, 0);
}
static inline VALUE
rb_vm_make_lambda(const rb_execution_context_t *ec, const struct rb_captured_block *captured, VALUE klass)
{
return rb_vm_make_proc_lambda(ec, captured, klass, 1);
}
VALUE rb_vm_make_binding(const rb_execution_context_t *ec, const rb_control_frame_t *src_cfp);
VALUE rb_vm_env_local_variables(const rb_env_t *env);
const rb_env_t *rb_vm_env_prev_env(const rb_env_t *env);
const VALUE *rb_binding_add_dynavars(VALUE bindval, 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_execution_context_t *ec, VALUE recv, VALUE id, int argc,
const VALUE *argv, const rb_callable_method_entry_t *me);
void rb_vm_pop_frame(rb_execution_context_t *ec);
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->waiting_fds);
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_execution_context_t *ec, const rb_control_frame_t *cfp);
rb_control_frame_t *rb_vm_get_binding_creatable_next_cfp(const rb_execution_context_t *ec, 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_execution_context_t *ec);
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, ID *called_idp, VALUE *klassp);
void rb_vm_rewind_cfp(rb_execution_context_t *ec, rb_control_frame_t *cfp);
VALUE rb_vm_bh_to_procval(const rb_execution_context_t *ec, VALUE block_handler);
void rb_vm_register_special_exception_str(enum ruby_special_exceptions sp, VALUE exception_class, VALUE mesg);
#define rb_vm_register_special_exception(sp, e, m) \
rb_vm_register_special_exception_str(sp, e, rb_usascii_str_new_static((m), (long)rb_strlen_lit(m)))
void rb_gc_mark_machine_stack(const rb_execution_context_t *ec);
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()
VALUE rb_catch_protect(VALUE t, rb_block_call_func *func, VALUE data, enum ruby_tag_type *stateptr);
/* for thread */
#if RUBY_VM_THREAD_MODEL == 2
RUBY_SYMBOL_EXPORT_BEGIN
extern rb_vm_t *ruby_current_vm_ptr;
extern rb_execution_context_t *ruby_current_execution_context_ptr;
extern rb_event_flag_t ruby_vm_event_flags;
extern rb_event_flag_t ruby_vm_event_enabled_flags;
RUBY_SYMBOL_EXPORT_END
#define GET_VM() rb_current_vm()
#define GET_THREAD() rb_current_thread()
#define GET_EC() rb_current_execution_context()
static inline rb_thread_t *
rb_ec_thread_ptr(const rb_execution_context_t *ec)
{
return ec->thread_ptr;
}
static inline rb_vm_t *
rb_ec_vm_ptr(const rb_execution_context_t *ec)
{
const rb_thread_t *th = rb_ec_thread_ptr(ec);
if (th) {
return th->vm;
}
else {
return NULL;
}
}
static inline rb_execution_context_t *
rb_current_execution_context(void)
{
return ruby_current_execution_context_ptr;
}
static inline rb_thread_t *
rb_current_thread(void)
{
const rb_execution_context_t *ec = GET_EC();
return rb_ec_thread_ptr(ec);
}
static inline rb_vm_t *
rb_current_vm(void)
{
VM_ASSERT(ruby_current_vm_ptr == NULL ||
ruby_current_execution_context_ptr == NULL ||
rb_ec_thread_ptr(GET_EC()) == NULL ||
rb_ec_vm_ptr(GET_EC()) == ruby_current_vm_ptr);
return ruby_current_vm_ptr;
}
#define rb_thread_set_current_raw(th) (void)(ruby_current_execution_context_ptr = (th)->ec)
#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(ec) ATOMIC_OR((ec)->interrupt_flag, TIMER_INTERRUPT_MASK)
#define RUBY_VM_SET_INTERRUPT(ec) ATOMIC_OR((ec)->interrupt_flag, PENDING_INTERRUPT_MASK)
#define RUBY_VM_SET_POSTPONED_JOB_INTERRUPT(ec) ATOMIC_OR((ec)->interrupt_flag, POSTPONED_JOB_INTERRUPT_MASK)
#define RUBY_VM_SET_TRAP_INTERRUPT(ec) ATOMIC_OR((ec)->interrupt_flag, TRAP_INTERRUPT_MASK)
#define RUBY_VM_INTERRUPTED(ec) ((ec)->interrupt_flag & ~(ec)->interrupt_mask & \
(PENDING_INTERRUPT_MASK|TRAP_INTERRUPT_MASK))
#define RUBY_VM_INTERRUPTED_ANY(ec) ((ec)->interrupt_flag & ~(ec)->interrupt_mask)
VALUE rb_exc_set_backtrace(VALUE exc, VALUE bt);
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);
void rb_ec_error_print(rb_execution_context_t * volatile ec, volatile VALUE errinfo);
void rb_execution_context_mark(const rb_execution_context_t *ec);
void rb_fiber_close(rb_fiber_t *fib);
void Init_native_thread(rb_thread_t *th);
#define RUBY_VM_CHECK_INTS(ec) rb_vm_check_ints(ec)
static inline void
rb_vm_check_ints(rb_execution_context_t *ec)
{
VM_ASSERT(ec == GET_EC());
if (UNLIKELY(RUBY_VM_INTERRUPTED_ANY(ec))) {
rb_threadptr_execute_interrupts(rb_ec_thread_ptr(ec), 0);
}
}
/* tracer */
struct rb_trace_arg_struct {
rb_event_flag_t event;
rb_execution_context_t *ec;
const rb_control_frame_t *cfp;
VALUE self;
ID id;
ID called_id;
VALUE klass;
VALUE data;
int klass_solved;
/* calc from cfp */
int lineno;
VALUE path;
};
void rb_exec_event_hooks(struct rb_trace_arg_struct *trace_arg, int pop_p);
#define EXEC_EVENT_HOOK_ORIG(ec_, flag_, vm_flags_, self_, id_, called_id_, klass_, data_, pop_p_) do { \
const rb_event_flag_t flag_arg_ = (flag_); \
if (UNLIKELY(vm_flags_ & (flag_arg_))) { \
/* defer evaluating the other arguments */ \
rb_exec_event_hook_orig(ec_, flag_arg_, self_, id_, called_id_, klass_, data_, pop_p_); \
} \
} while (0)
static inline void
rb_exec_event_hook_orig(rb_execution_context_t *ec, const rb_event_flag_t flag,
VALUE self, ID id, ID called_id, VALUE klass, VALUE data, int pop_p)
{
struct rb_trace_arg_struct trace_arg;
VM_ASSERT(rb_ec_vm_ptr(ec)->event_hooks.events == ruby_vm_event_flags);
VM_ASSERT(rb_ec_vm_ptr(ec)->event_hooks.events & flag);
trace_arg.event = flag;
trace_arg.ec = ec;
trace_arg.cfp = ec->cfp;
trace_arg.self = self;
trace_arg.id = id;
trace_arg.called_id = called_id;
trace_arg.klass = klass;
trace_arg.data = data;
trace_arg.path = Qundef;
trace_arg.klass_solved = 0;
rb_exec_event_hooks(&trace_arg, pop_p);
}
#define EXEC_EVENT_HOOK(ec_, flag_, self_, id_, called_id_, klass_, data_) \
EXEC_EVENT_HOOK_ORIG(ec_, flag_, ruby_vm_event_flags, self_, id_, called_id_, klass_, data_, 0)
#define EXEC_EVENT_HOOK_AND_POP_FRAME(ec_, flag_, self_, id_, called_id_, klass_, data_) \
EXEC_EVENT_HOOK_ORIG(ec_, flag_, ruby_vm_event_flags, self_, id_, called_id_, klass_, data_, 1)
RUBY_SYMBOL_EXPORT_BEGIN
int rb_thread_check_trap_pending(void);
/* #define RUBY_EVENT_RESERVED_FOR_INTERNAL_USE 0x030000 */ /* from vm_core.h */
#define RUBY_EVENT_COVERAGE_LINE 0x010000
#define RUBY_EVENT_COVERAGE_BRANCH 0x020000
extern VALUE rb_get_coverages(void);
extern void rb_set_coverages(VALUE, int, 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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