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ruby--ruby/vm_core.h
Jeremy Evans a0273d67d0 Avoid a use after free in VM assertion 
If the thread for the current EC has been killed, don't check
the VM ptr for the EC (which gets it via the thread), as that will
have already been freed.

Fixes [Bug #16907]
2020-08-21 14:52:30 -07:00

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#ifndef RUBY_VM_CORE_H
#define RUBY_VM_CORE_H
/**********************************************************************
vm_core.h -
$Author$
created at: 04/01/01 19:41:38 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
/*
* Enable check mode.
* 1: enable local assertions.
*/
#ifndef VM_CHECK_MODE
// respect RUBY_DUBUG: if given n is 0, then use RUBY_DEBUG
#define N_OR_RUBY_DEBUG(n) (((n) > 0) ? (n) : RUBY_DEBUG)
#define VM_CHECK_MODE N_OR_RUBY_DEBUG(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/internal/config.h"
#include <stddef.h>
#include <signal.h>
#include <stdarg.h>
#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
#include <setjmp.h>
#include "ruby/internal/stdbool.h"
#include "ccan/list/list.h"
#include "id.h"
#include "internal.h"
#include "internal/array.h"
#include "internal/serial.h"
#include "internal/vm.h"
#include "method.h"
#include "node.h"
#include "ruby/ruby.h"
#include "ruby/st.h"
#include "ruby_atomic.h"
#include "vm_opts.h"
#include "ruby/thread_native.h"
#if defined(_WIN32)
#include "thread_win32.h"
#elif defined(HAVE_PTHREAD_H)
#include "thread_pthread.h"
#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
#if defined(NSIG_MAX) /* POSIX issue 8 */
# undef NSIG
# define NSIG NSIG_MAX
#elif defined(_SIG_MAXSIG) /* FreeBSD */
# undef NSIG
# define NSIG _SIG_MAXSIG
#elif defined(_SIGMAX) /* QNX */
# define NSIG (_SIGMAX + 1)
#elif defined(NSIG) /* 99% of everything else */
# /* take it */
#else /* Last resort */
# define NSIG (sizeof(sigset_t) * CHAR_BIT + 1)
#endif
#define RUBY_NSIG NSIG
#if defined(SIGCLD)
# define RUBY_SIGCHLD (SIGCLD)
#elif defined(SIGCHLD)
# define RUBY_SIGCHLD (SIGCHLD)
#else
# define RUBY_SIGCHLD (0)
#endif
/* platforms with broken or non-existent SIGCHLD work by polling */
#if defined(__APPLE__)
# define SIGCHLD_LOSSY (1)
#else
# define SIGCHLD_LOSSY (0)
#endif
/* define to 0 to test old code path */
#define WAITPID_USE_SIGCHLD (RUBY_SIGCHLD || SIGCHLD_LOSSY)
#if defined(SIGSEGV) && defined(HAVE_SIGALTSTACK) && defined(SA_SIGINFO) && !defined(__NetBSD__)
# define USE_SIGALTSTACK
void *rb_allocate_sigaltstack(void);
void *rb_register_sigaltstack(void *);
# define RB_ALTSTACK_INIT(var, altstack) var = rb_register_sigaltstack(altstack)
# define RB_ALTSTACK_FREE(var) xfree(var)
# define RB_ALTSTACK(var) var
#else /* noop */
# define RB_ALTSTACK_INIT(var, altstack)
# define RB_ALTSTACK_FREE(var)
# define RB_ALTSTACK(var) (0)
#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 */
void rb_vm_encoded_insn_data_table_init(void);
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_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;
VALUE value;
};
struct iseq_inline_iv_cache_entry {
rb_serial_t ic_serial;
size_t index;
};
union iseq_inline_storage_entry {
struct {
struct rb_thread_struct *running_thread;
VALUE value;
} once;
struct iseq_inline_cache_entry cache;
struct iseq_inline_iv_cache_entry iv_cache;
};
struct rb_calling_info {
VALUE block_handler;
VALUE recv;
int argc;
int kw_splat;
};
struct rb_execution_context_struct;
#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 */
int node_id;
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_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;
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|} */
unsigned int accepts_no_kwarg : 1;
unsigned int ruby2_keywords: 1;
} 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;
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 */
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_data *call_data; //struct rb_call_data calls[ci_size];
struct {
rb_snum_t flip_count;
VALUE coverage;
VALUE pc2branchindex;
VALUE *original_iseq;
} variable;
unsigned int local_table_size;
unsigned int is_size;
unsigned int ci_size;
unsigned int stack_max; /* for stack overflow check */
char catch_except_p; /* If a frame of this ISeq may catch exception, set TRUE */
bool builtin_inline_p; // This ISeq's builtin func is safe to be inlined by MJIT
#if USE_MJIT
/* 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;
#endif
};
/* T_IMEMO/iseq */
/* typedef rb_iseq_t is in method.h */
struct rb_iseq_struct {
VALUE flags; /* 1 */
VALUE wrapper; /* 2 */
struct rb_iseq_constant_body *body; /* 3 */
union { /* 4, 5 words */
struct iseq_compile_data *compile_data; /* used at compile time */
struct {
VALUE obj;
int index;
} loader;
struct {
struct rb_hook_list_struct *local_hooks;
rb_event_flag_t global_trace_events;
} exec;
} 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;
}
static inline const rb_iseq_t *
def_iseq_ptr(rb_method_definition_t *def)
{
//TODO: re-visit. to check the bug, enable this assertion.
#if VM_CHECK_MODE > 0
if (def->type != VM_METHOD_TYPE_ISEQ) rb_bug("def_iseq_ptr: not iseq (%d)", def->type);
#endif
return rb_iseq_check(def->body.iseq.iseqptr);
}
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_NIL_P,
BOP_SUCC,
BOP_GT,
BOP_GE,
BOP_NOT,
BOP_NEQ,
BOP_MATCH,
BOP_FREEZE,
BOP_UMINUS,
BOP_MAX,
BOP_MIN,
BOP_CALL,
BOP_AND,
BOP_OR,
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 *);
void rb_objspace_call_finalizer(struct rb_objspace *);
typedef struct rb_hook_list_struct {
struct rb_event_hook_struct *hooks;
rb_event_flag_t events;
unsigned int need_clean;
unsigned int running;
} rb_hook_list_t;
// see builtin.h for definition
typedef const struct rb_builtin_function *RB_BUILTIN;
typedef struct rb_vm_struct {
VALUE self;
rb_global_vm_lock_t gvl;
struct rb_thread_struct *main_thread;
/* persists across uncontended GVL release/acquire for time slice */
const struct rb_thread_struct *running_thread;
#ifdef USE_SIGALTSTACK
void *main_altstack;
#endif
rb_serial_t fork_gen;
rb_nativethread_lock_t waitpid_lock;
struct list_head waiting_pids; /* PID > 0: <=> struct waitpid_state */
struct list_head waiting_grps; /* PID <= 0: <=> struct waitpid_state */
struct list_head waiting_fds; /* <=> struct waiting_fd */
struct list_head living_threads;
VALUE thgroup_default;
int living_thread_num;
/* set in single-threaded processes only: */
volatile int ubf_async_safe;
unsigned int running: 1;
unsigned int thread_abort_on_exception: 1;
unsigned int thread_report_on_exception: 1;
unsigned int safe_level_: 1;
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];
} trap_list;
/* hook */
rb_hook_list_t global_hooks;
/* relation table of ensure - rollback for callcc */
struct st_table *ensure_rollback_table;
/* postponed_job (async-signal-safe, NOT thread-safe) */
struct rb_postponed_job_struct *postponed_job_buffer;
rb_atomic_t postponed_job_index;
int src_encoding_index;
/* workqueue (thread-safe, NOT async-signal-safe) */
struct list_head workqueue; /* <=> rb_workqueue_job.jnode */
rb_nativethread_lock_t workqueue_lock;
VALUE verbose, debug, orig_progname, progname;
VALUE coverages;
int coverage_mode;
st_table * defined_module_hash;
struct rb_objspace *objspace;
rb_at_exit_list *at_exit;
VALUE *defined_strings;
st_table *frozen_strings;
const struct rb_builtin_function *builtin_function_table;
int builtin_inline_index;
/* 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
#if __has_feature(memory_sanitizer) || __has_feature(address_sanitizer)
/* It seems sanitizers consume A LOT of machine stacks */
#undef RUBY_VM_THREAD_MACHINE_STACK_SIZE
#define RUBY_VM_THREAD_MACHINE_STACK_SIZE (1024 * 1024 * sizeof(VALUE))
#undef RUBY_VM_THREAD_MACHINE_STACK_SIZE_MIN
#define RUBY_VM_THREAD_MACHINE_STACK_SIZE_MIN ( 512 * 1024 * sizeof(VALUE))
#undef RUBY_VM_FIBER_MACHINE_STACK_SIZE
#define RUBY_VM_FIBER_MACHINE_STACK_SIZE ( 256 * 1024 * sizeof(VALUE))
#undef RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN
#define RUBY_VM_FIBER_MACHINE_STACK_SIZE_MIN ( 128 * 1024 * sizeof(VALUE))
#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 (VMDEBUG != 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 or forwarded block handler */
VALUE *__bp__; /* cfp[6] */ /* outside vm_push_frame, use vm_base_ptr instead. */
#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
};
#ifdef RUBY_JMP_BUF
typedef RUBY_JMP_BUF rb_jmpbuf_t;
#else
typedef void *rb_jmpbuf_t[5];
#endif
/*
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)(VALUE);
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;
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;
/* interrupt flags */
rb_atomic_t interrupt_flag;
rb_atomic_t interrupt_mask; /* size should match flag */
rb_fiber_t *fiber_ptr;
struct rb_thread_struct *thread_ptr;
/* storage (ec (fiber) local) */
struct rb_id_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 */
uint8_t raised_flag; /* only 3 bits needed */
/* n.b. only 7 bits needed, really: */
BITFIELD(enum method_missing_reason, method_missing_reason, 8);
VALUE private_const_reference;
/* for GC */
struct {
VALUE *stack_start;
VALUE *stack_end;
size_t stack_maxsize;
RUBY_ALIGNAS(SIZEOF_VALUE) jmp_buf regs;
} machine;
};
#ifndef rb_execution_context_t
typedef struct rb_execution_context_struct rb_execution_context_t;
#define rb_execution_context_t rb_execution_context_t
#endif
// for builtin.h
#define VM_CORE_H_EC_DEFINED 1
// Set the vm_stack pointer in the execution context.
void rb_ec_set_vm_stack(rb_execution_context_t *ec, VALUE *stack, size_t size);
// Initialize the vm_stack pointer in the execution context and push the initial stack frame.
// @param ec the execution context to update.
// @param stack a pointer to the stack to use.
// @param size the size of the stack, as in `VALUE stack[size]`.
void rb_ec_initialize_vm_stack(rb_execution_context_t *ec, VALUE *stack, size_t size);
// Clear (set to `NULL`) the vm_stack pointer.
// @param ec the execution context to update.
void rb_ec_clear_vm_stack(rb_execution_context_t *ec);
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
BITFIELD(enum rb_thread_status, status, 2);
/* bit flags */
unsigned int to_kill : 1;
unsigned int abort_on_exception: 1;
unsigned int report_on_exception: 1;
unsigned int pending_interrupt_queue_checked: 1;
int8_t priority; /* -3 .. 3 (RUBY_THREAD_PRIORITY_{MIN,MAX}) */
uint32_t running_time_us; /* 12500..800000 */
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;
/* 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;
union {
struct {
VALUE proc;
VALUE args;
int kw_splat;
} proc;
struct {
VALUE (*func)(void *);
void *arg;
} func;
} invoke_arg;
enum {
thread_invoke_type_none = 0,
thread_invoke_type_proc,
thread_invoke_type_func
} invoke_type;
/* statistics data for profiler */
VALUE stat_insn_usage;
/* fiber */
rb_fiber_t *root_fiber;
rb_jmpbuf_t root_jmpbuf;
VALUE scheduler;
unsigned blocking;
/* misc */
VALUE name;
#ifdef USE_SIGALTSTACK
void *altstack;
#endif
} 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*);
struct iseq_link_anchor;
struct rb_iseq_new_with_callback_callback_func {
VALUE flags;
VALUE reserved;
void (*func)(rb_iseq_t *, struct iseq_link_anchor *, const void *);
const void *data;
};
static inline struct rb_iseq_new_with_callback_callback_func *
rb_iseq_new_with_callback_new_callback(
void (*func)(rb_iseq_t *, struct iseq_link_anchor *, const void *), const void *ptr)
{
VALUE memo = rb_imemo_new(imemo_ifunc, (VALUE)func, (VALUE)ptr, Qundef, Qfalse);
return (struct rb_iseq_new_with_callback_callback_func *)memo;
}
rb_iseq_t *rb_iseq_new_with_callback(const struct rb_iseq_new_with_callback_callback_func * ifunc,
VALUE name, VALUE path, VALUE realpath, VALUE first_lineno,
const rb_iseq_t *parent, enum iseq_type, const rb_compile_option_t*);
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);
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_EXTERN VALUE rb_block_param_proxy;
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 */
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_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 struct iseq_inline_iv_cache_entry *IVC;
typedef union iseq_inline_storage_entry *ISE;
typedef const struct rb_callinfo *CALL_INFO;
typedef const struct rb_callcache *CALL_CACHE;
typedef struct rb_call_data *CALL_DATA;
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 ____ _FFF FFFF EEEX (LSB)
*
* X : tag for GC marking (It seems as Fixnum)
* EEE : 3 bits Env flags
* FF..: 7 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,
VM_FRAME_FLAG_CFRAME_KW = 0x0400,
/* 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_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_CFRAME_KW_P(const rb_control_frame_t *cfp)
{
return VM_ENV_FLAGS(cfp->ep, VM_FRAME_FLAG_CFRAME_KW) != 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 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 int
vm_cfp_forwarded_bh_p(const rb_control_frame_t *cfp, VALUE block_handler)
{
return ((VALUE) cfp->block_code) == block_handler;
}
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
#if OPT_STACK_CACHING
, VALUE reg_a, VALUE reg_b
#endif
);
#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 *);
typedef RETSIGTYPE (*ruby_sighandler_t)(int);
NORETURN(void rb_bug_for_fatal_signal(ruby_sighandler_t default_sighandler, int sig, 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, int kw_splat, 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_kw(rb_execution_context_t *ec, VALUE recv, VALUE id, int argc,
const VALUE *argv, const rb_callable_method_entry_t *me, int kw_splat);
MJIT_STATIC 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(int);
static inline void
rb_vm_living_threads_init(rb_vm_t *vm)
{
list_head_init(&vm->waiting_fds);
list_head_init(&vm->waiting_pids);
list_head_init(&vm->workqueue);
list_head_init(&vm->waiting_grps);
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 *);
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);
MJIT_STATIC 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);
MJIT_STATIC 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 CHECK_VM_STACK_OVERFLOW0(cfp, sp, margin) do { \
STATIC_ASSERT(sizeof_sp, sizeof(*(sp)) == sizeof(VALUE)); \
STATIC_ASSERT(sizeof_cfp, sizeof(*(cfp)) == sizeof(rb_control_frame_t)); \
const struct rb_control_frame_struct *bound = (void *)&(sp)[(margin)]; \
if (UNLIKELY((cfp) <= &bound[1])) { \
vm_stackoverflow(); \
} \
} while (0)
#define CHECK_VM_STACK_OVERFLOW(cfp, margin) \
CHECK_VM_STACK_OVERFLOW0((cfp), (cfp)->sp, (margin))
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
RUBY_EXTERN rb_vm_t *ruby_current_vm_ptr;
RUBY_EXTERN rb_execution_context_t *ruby_current_execution_context_ptr;
RUBY_EXTERN rb_event_flag_t ruby_vm_event_flags;
RUBY_EXTERN rb_event_flag_t ruby_vm_event_enabled_global_flags;
RUBY_EXTERN unsigned int ruby_vm_event_local_num;
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_thread_ptr(GET_EC())->status == THREAD_KILLED ||
rb_ec_vm_ptr(GET_EC()) == ruby_current_vm_ptr);
return ruby_current_vm_ptr;
}
static inline void
rb_thread_set_current_raw(const rb_thread_t *th)
{
ruby_current_execution_context_ptr = th->ec;
}
static inline void
rb_thread_set_current(rb_thread_t *th)
{
if (th->vm->running_thread != th) {
th->running_time_us = 0;
}
rb_thread_set_current_raw(th);
th->vm->running_thread = th;
}
#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);
int 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);
int 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);
VALUE rb_ec_get_errinfo(const rb_execution_context_t *ec);
void rb_ec_error_print(rb_execution_context_t * volatile ec, volatile VALUE errinfo);
void rb_execution_context_update(const rb_execution_context_t *ec);
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_hook_list_mark(rb_hook_list_t *hooks);
void rb_hook_list_free(rb_hook_list_t *hooks);
void rb_hook_list_connect_tracepoint(VALUE target, rb_hook_list_t *list, VALUE tpval, unsigned int target_line);
void rb_hook_list_remove_tracepoint(rb_hook_list_t *list, VALUE tpval);
void rb_exec_event_hooks(struct rb_trace_arg_struct *trace_arg, rb_hook_list_t *hooks, int pop_p);
#define EXEC_EVENT_HOOK_ORIG(ec_, hooks_, flag_, self_, id_, called_id_, klass_, data_, pop_p_) do { \
const rb_event_flag_t flag_arg_ = (flag_); \
rb_hook_list_t *hooks_arg_ = (hooks_); \
if (UNLIKELY((hooks_arg_)->events & (flag_arg_))) { \
/* defer evaluating the other arguments */ \
rb_exec_event_hook_orig(ec_, hooks_arg_, 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, rb_hook_list_t *hooks, 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((hooks->events & flag) != 0);
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, hooks, pop_p);
}
static inline rb_hook_list_t *
rb_vm_global_hooks(const rb_execution_context_t *ec)
{
return &rb_ec_vm_ptr(ec)->global_hooks;
}
#define EXEC_EVENT_HOOK(ec_, flag_, self_, id_, called_id_, klass_, data_) \
EXEC_EVENT_HOOK_ORIG(ec_, rb_vm_global_hooks(ec_), flag_, 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_, rb_vm_global_hooks(ec_), flag_, self_, id_, called_id_, klass_, data_, 1)
static inline void
rb_exec_event_hook_script_compiled(rb_execution_context_t *ec, const rb_iseq_t *iseq, VALUE eval_script)
{
EXEC_EVENT_HOOK(ec, RUBY_EVENT_SCRIPT_COMPILED, ec->cfp->self, 0, 0, 0,
NIL_P(eval_script) ? (VALUE)iseq :
rb_ary_new_from_args(2, eval_script, (VALUE)iseq));
}
void rb_vm_trap_exit(rb_vm_t *vm);
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_clear_coverages(void);
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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