ruby/eval_intern.h at trunk · keeprubyweird/ruby · GitHub

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#ifndefRUBY_EVAL_INTERN_H
#defineRUBY_EVAL_INTERN_H

#include"ruby/ruby.h"
#include"vm_core.h"

#definePASS_PASSED_BLOCK_TH(th) do { \
 (th)->passed_block = rb_vm_control_frame_block_ptr(th->cfp); \
 (th)->cfp->flag |= VM_FRAME_FLAG_PASSED; \
} while (0)

#definePASS_PASSED_BLOCK() do { \
 rb_thread_t * const __th__ = GET_THREAD(); \
 PASS_PASSED_BLOCK_TH(__th__); \
} while (0)

#ifdefHAVE_STDLIB_H
#include<stdlib.h>
#endif
#ifndefEXIT_SUCCESS
#defineEXIT_SUCCESS 0
#endif
#ifndefEXIT_FAILURE
#defineEXIT_FAILURE 1
#endif

#include<stdio.h>
#include<setjmp.h>

#ifdef__APPLE__
# ifdefHAVE_CRT_EXTERNS_H
# include<crt_externs.h>
# else
# include"missing/crt_externs.h"
# endif
#endif

#ifndefHAVE_STRING_H
char*strrchr(constchar*, constchar);
#endif

#ifdefHAVE_UNISTD_H
#include<unistd.h>
#endif

#ifdefHAVE_NET_SOCKET_H
#include<net/socket.h>
#endif

#defineruby_setjmp(env) RUBY_SETJMP(env)
#defineruby_longjmp(env,val) RUBY_LONGJMP((env),(val))
#ifdef__CYGWIN__
# ifndef_setjmp
int_setjmp(jmp_buf);
# endif
# ifndef_longjmp
NORETURN(void_longjmp(jmp_buf, int));
# endif
#endif

#include<sys/types.h>
#include<signal.h>
#include<errno.h>

#ifdefHAVE_SYS_SELECT_H
#include<sys/select.h>
#endif

/*
 Solaris sys/select.h switches select to select_large_fdset to support larger
 file descriptors if FD_SETSIZE is larger than 1024 on 32bit environment.
 But Ruby doesn't change FD_SETSIZE because fd_set is allocated dynamically.
 So following definition is required to use select_large_fdset.
*/
#ifdefHAVE_SELECT_LARGE_FDSET
#defineselect(n, r, w, e, t) select_large_fdset((n), (r), (w), (e), (t))
externintselect_large_fdset(int, fd_set*, fd_set*, fd_set*, structtimeval*);
#endif

#ifdefHAVE_SYS_PARAM_H
#include<sys/param.h>
#endif

#include<sys/stat.h>

#ifdef_MSC_VER
#defineSAVE_ROOT_JMPBUF_BEFORE_STMT \
 __try {
#defineSAVE_ROOT_JMPBUF_AFTER_STMT \
 } \
 __except (GetExceptionCode() == EXCEPTION_STACK_OVERFLOW ? \
 (rb_thread_raised_set(GET_THREAD(), RAISED_STACKOVERFLOW), \
 raise(SIGSEGV), \
 EXCEPTION_EXECUTE_HANDLER) : \
 EXCEPTION_CONTINUE_SEARCH) { \
/* never reaches here */ \
 }
#elif defined(__MINGW32__)
LONGWINAPIrb_w32_stack_overflow_handler(struct_EXCEPTION_POINTERS *);
#defineSAVE_ROOT_JMPBUF_BEFORE_STMT \
 do { \
	PVOID _handler = AddVectoredExceptionHandler(1, rb_w32_stack_overflow_handler);

#defineSAVE_ROOT_JMPBUF_AFTER_STMT \
	RemoveVectoredExceptionHandler(_handler); \
 } while (0);
#else
#defineSAVE_ROOT_JMPBUF_BEFORE_STMT
#defineSAVE_ROOT_JMPBUF_AFTER_STMT
#endif

#defineSAVE_ROOT_JMPBUF(th, stmt) do \
 if (ruby_setjmp((th)->root_jmpbuf) == 0) { \
 SAVE_ROOT_JMPBUF_BEFORE_STMT \
 stmt; \
 SAVE_ROOT_JMPBUF_AFTER_STMT \
 } \
 else { \
 rb_fiber_start(); \
 } while (0)

#defineTH_PUSH_TAG(th) do { \
 rb_thread_t * const _th = (th); \
 struct rb_vm_tag _tag; \
 _tag.tag = 0; \
 _tag.prev = _th->tag;

#defineTH_POP_TAG() \
 _th->tag = _tag.prev; \
} while (0)

#defineTH_TMPPOP_TAG() \
 _th->tag = _tag.prev

#defineTH_REPUSH_TAG() (void)(_th->tag = &_tag)

#definePUSH_TAG() TH_PUSH_TAG(GET_THREAD())
#definePOP_TAG() TH_POP_TAG()

#if defined __GNUC__&&__GNUC__==4&& (__GNUC_MINOR__ >= 6&&__GNUC_MINOR__ <= 8)
# defineVAR_FROM_MEMORY(var) __extension__(*(__typeof__(var) volatile *)&(var))
# defineVAR_INITIALIZED(var) ((var) = VAR_FROM_MEMORY(var))
#else
# defineVAR_FROM_MEMORY(var) (var)
# defineVAR_INITIALIZED(var) ((void)&(var))
#endif

/* clear th->state, and return the value */
staticinlineint
rb_threadptr_tag_state(rb_thread_t*th)
{
intstate=th->state;
th->state=0;
returnstate;
}

NORETURN(staticinlinevoidrb_threadptr_tag_jump(rb_thread_t*, int));
staticinlinevoid
rb_threadptr_tag_jump(rb_thread_t*th, intst)
{
th->state=st;
ruby_longjmp(th->tag->buf, 1);
}

/*
 setjmp() in assignment expression rhs is undefined behavior
 [ISO/IEC 9899:1999] 7.13.1.1
*/
#defineTH_EXEC_TAG() \
 (ruby_setjmp(_tag.buf) ? rb_threadptr_tag_state(VAR_FROM_MEMORY(_th)) : (TH_REPUSH_TAG(), 0))

#defineEXEC_TAG() \
 TH_EXEC_TAG()

#defineTH_JUMP_TAG(th, st) rb_threadptr_tag_jump(th, st)

#defineJUMP_TAG(st) TH_JUMP_TAG(GET_THREAD(), (st))

#defineINTERNAL_EXCEPTION_P(exc) FIXNUM_P(exc)

enumruby_tag_type {
RUBY_TAG_RETURN=0x1,
RUBY_TAG_BREAK=0x2,
RUBY_TAG_NEXT=0x3,
RUBY_TAG_RETRY=0x4,
RUBY_TAG_REDO=0x5,
RUBY_TAG_RAISE=0x6,
RUBY_TAG_THROW=0x7,
RUBY_TAG_FATAL=0x8,
RUBY_TAG_MASK=0xf
};
#defineTAG_RETURN	RUBY_TAG_RETURN
#defineTAG_BREAK	RUBY_TAG_BREAK
#defineTAG_NEXT	RUBY_TAG_NEXT
#defineTAG_RETRY	RUBY_TAG_RETRY
#defineTAG_REDO	RUBY_TAG_REDO
#defineTAG_RAISE	RUBY_TAG_RAISE
#defineTAG_THROW	RUBY_TAG_THROW
#defineTAG_FATAL	RUBY_TAG_FATAL
#defineTAG_MASK	RUBY_TAG_MASK

#defineNEW_THROW_OBJECT(val, pt, st) \
 ((VALUE)rb_node_newnode(NODE_LIT, (VALUE)(val), (VALUE)(pt), (VALUE)(st)))
#defineSET_THROWOBJ_CATCH_POINT(obj, val) \
 (RNODE((obj))->u2.value = (val))
#defineSET_THROWOBJ_STATE(obj, val) \
 (RNODE((obj))->u3.value = (val))

#defineGET_THROWOBJ_VAL(obj) ((VALUE)RNODE((obj))->u1.value)
#defineGET_THROWOBJ_CATCH_POINT(obj) ((VALUE*)RNODE((obj))->u2.value)
#defineGET_THROWOBJ_STATE(obj) ((int)RNODE((obj))->u3.value)

#defineSCOPE_TEST(f) (rb_vm_cref()->nd_visi & (f))
#defineSCOPE_CHECK(f) (rb_vm_cref()->nd_visi == (f))
#defineSCOPE_SET(f) (rb_vm_cref()->nd_visi = (f))

voidrb_thread_cleanup(void);
voidrb_thread_wait_other_threads(void);

enum {
RAISED_EXCEPTION=1,
RAISED_STACKOVERFLOW=2,
RAISED_NOMEMORY=4
};
intrb_threadptr_set_raised(rb_thread_t*th);
intrb_threadptr_reset_raised(rb_thread_t*th);
#definerb_thread_raised_set(th, f) ((th)->raised_flag |= (f))
#definerb_thread_raised_reset(th, f) ((th)->raised_flag &= ~(f))
#definerb_thread_raised_p(th, f) (((th)->raised_flag & (f)) != 0)
#definerb_thread_raised_clear(th) ((th)->raised_flag = 0)

VALUErb_f_eval(intargc, constVALUE*argv, VALUEself);
VALUErb_make_exception(intargc, constVALUE*argv);

NORETURN(voidrb_method_name_error(VALUE, VALUE));

NORETURN(voidrb_fiber_start(void));

NORETURN(voidrb_print_undef(VALUE, ID, int));
NORETURN(voidrb_print_undef_str(VALUE, VALUE));
NORETURN(voidrb_print_inaccessible(VALUE, ID, int));
NORETURN(voidrb_vm_localjump_error(constchar*,VALUE, int));
NORETURN(voidrb_vm_jump_tag_but_local_jump(int));
NORETURN(voidrb_raise_method_missing(rb_thread_t*th, intargc, constVALUE*argv,
VALUEobj, intcall_status));

VALUErb_vm_make_jump_tag_but_local_jump(intstate, VALUEval);
NODE*rb_vm_cref(void);
VALUErb_vm_call_cfunc(VALUErecv, VALUE (*func)(VALUE), VALUEarg, constrb_block_t*blockptr, VALUEfilename);
voidrb_vm_set_progname(VALUEfilename);
voidrb_thread_terminate_all(void);
VALUErb_vm_top_self();
VALUErb_vm_cbase(void);

#ifndefCharNext/* defined as CharNext[AW] on Windows. */
# ifdefHAVE_MBLEN
# defineCharNext(p) ((p) + mblen((p), RUBY_MBCHAR_MAXSIZE))
# else
# defineCharNext(p) ((p) + 1)
# endif
#endif

#if defined DOSISH|| defined __CYGWIN__
staticinlinevoid
translit_char(char*p, intfrom, intto)
{
while (*p) {
if ((unsigned char)*p==from)
*p=to;
p=CharNext(p);
 }
}
#endif

#endif/* RUBY_EVAL_INTERN_H */