зеркало из https://github.com/github/ruby.git
325 строки
8.3 KiB
C
325 строки
8.3 KiB
C
#ifndef RUBY_EVAL_INTERN_H
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#define RUBY_EVAL_INTERN_H
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#include "ruby/ruby.h"
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#include "vm_core.h"
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static inline void
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vm_passed_block_handler_set(rb_execution_context_t *ec, VALUE block_handler)
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{
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vm_block_handler_verify(block_handler);
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ec->passed_block_handler = block_handler;
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}
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static inline void
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pass_passed_block_handler(rb_execution_context_t *ec)
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{
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VALUE block_handler = rb_vm_frame_block_handler(ec->cfp);
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vm_passed_block_handler_set(ec, block_handler);
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VM_ENV_FLAGS_SET(ec->cfp->ep, VM_FRAME_FLAG_PASSED);
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}
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#define PASS_PASSED_BLOCK_HANDLER_EC(ec) pass_passed_block_handler(ec)
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#define PASS_PASSED_BLOCK_HANDLER() pass_passed_block_handler(GET_EC())
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifndef EXIT_SUCCESS
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#define EXIT_SUCCESS 0
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#endif
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#ifndef EXIT_FAILURE
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#define EXIT_FAILURE 1
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#endif
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#include <stdio.h>
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#include <setjmp.h>
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#ifdef __APPLE__
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# ifdef HAVE_CRT_EXTERNS_H
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# include <crt_externs.h>
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# else
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# include "missing/crt_externs.h"
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# endif
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#endif
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#ifndef HAVE_STRING_H
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char *strrchr(const char *, const char);
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_NET_SOCKET_H
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#include <net/socket.h>
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#endif
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#define ruby_setjmp(env) RUBY_SETJMP(env)
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#define ruby_longjmp(env,val) RUBY_LONGJMP((env),(val))
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#ifdef __CYGWIN__
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# ifndef _setjmp
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int _setjmp(jmp_buf);
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# endif
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# ifndef _longjmp
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NORETURN(void _longjmp(jmp_buf, int));
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# endif
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#endif
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#include <sys/types.h>
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#include <signal.h>
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#include <errno.h>
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#ifdef HAVE_SYS_SELECT_H
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#include <sys/select.h>
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#endif
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/*
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Solaris sys/select.h switches select to select_large_fdset to support larger
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file descriptors if FD_SETSIZE is larger than 1024 on 32bit environment.
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But Ruby doesn't change FD_SETSIZE because fd_set is allocated dynamically.
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So following definition is required to use select_large_fdset.
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*/
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#ifdef HAVE_SELECT_LARGE_FDSET
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#define select(n, r, w, e, t) select_large_fdset((n), (r), (w), (e), (t))
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extern int select_large_fdset(int, fd_set *, fd_set *, fd_set *, struct timeval *);
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#endif
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#ifdef HAVE_SYS_PARAM_H
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#include <sys/param.h>
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#endif
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#include <sys/stat.h>
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#ifdef _MSC_VER
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#define SAVE_ROOT_JMPBUF_BEFORE_STMT \
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__try {
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#define SAVE_ROOT_JMPBUF_AFTER_STMT \
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} \
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__except (GetExceptionCode() == EXCEPTION_STACK_OVERFLOW ? \
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(rb_ec_raised_set(GET_EC(), RAISED_STACKOVERFLOW), \
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raise(SIGSEGV), \
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EXCEPTION_EXECUTE_HANDLER) : \
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EXCEPTION_CONTINUE_SEARCH) { \
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/* never reaches here */ \
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}
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#elif defined(__MINGW32__)
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LONG WINAPI rb_w32_stack_overflow_handler(struct _EXCEPTION_POINTERS *);
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#define SAVE_ROOT_JMPBUF_BEFORE_STMT \
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do { \
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PVOID _handler = AddVectoredExceptionHandler(1, rb_w32_stack_overflow_handler);
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#define SAVE_ROOT_JMPBUF_AFTER_STMT \
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RemoveVectoredExceptionHandler(_handler); \
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} while (0);
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#else
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#define SAVE_ROOT_JMPBUF_BEFORE_STMT
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#define SAVE_ROOT_JMPBUF_AFTER_STMT
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#endif
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#define SAVE_ROOT_JMPBUF(th, stmt) do \
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if (ruby_setjmp((th)->root_jmpbuf) == 0) { \
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SAVE_ROOT_JMPBUF_BEFORE_STMT \
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stmt; \
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SAVE_ROOT_JMPBUF_AFTER_STMT \
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} \
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else { \
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rb_fiber_start(); \
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} while (0)
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#define EC_PUSH_TAG(ec) do { \
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rb_execution_context_t * const _ec = (ec); \
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struct rb_vm_tag _tag; \
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_tag.state = TAG_NONE; \
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_tag.tag = Qundef; \
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_tag.prev = _ec->tag; \
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_tag.lock_rec = rb_ec_vm_lock_rec(_ec); \
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#define EC_POP_TAG() \
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_ec->tag = _tag.prev; \
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} while (0)
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#define EC_TMPPOP_TAG() \
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_ec->tag = _tag.prev
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#define EC_REPUSH_TAG() (void)(_ec->tag = &_tag)
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#if defined __GNUC__ && __GNUC__ == 4 && (__GNUC_MINOR__ >= 6 && __GNUC_MINOR__ <= 8) || __clang__
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/* This macro prevents GCC 4.6--4.8 from emitting maybe-uninitialized warnings.
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* This macro also prevents Clang from dumping core in EC_EXEC_TAG().
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* (I confirmed Clang 4.0.1 and 5.0.0.)
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*/
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# define VAR_FROM_MEMORY(var) __extension__(*(__typeof__(var) volatile *)&(var))
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# define VAR_INITIALIZED(var) ((var) = VAR_FROM_MEMORY(var))
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# define VAR_NOCLOBBERED(var) volatile var
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#else
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# define VAR_FROM_MEMORY(var) (var)
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# define VAR_INITIALIZED(var) ((void)&(var))
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# define VAR_NOCLOBBERED(var) var
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#endif
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static inline void
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rb_ec_vm_lock_rec_check(const rb_execution_context_t *ec, unsigned int recorded_lock_rec)
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{
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unsigned int current_lock_rec = rb_ec_vm_lock_rec(ec);
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if (current_lock_rec != recorded_lock_rec) {
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rb_ec_vm_lock_rec_release(ec, recorded_lock_rec, current_lock_rec);
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}
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}
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/* clear ec->tag->state, and return the value */
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static inline int
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rb_ec_tag_state(const rb_execution_context_t *ec)
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{
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struct rb_vm_tag *tag = ec->tag;
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enum ruby_tag_type state = tag->state;
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tag->state = TAG_NONE;
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rb_ec_vm_lock_rec_check(ec, tag->lock_rec);
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return state;
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}
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NORETURN(static inline void rb_ec_tag_jump(const rb_execution_context_t *ec, enum ruby_tag_type st));
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static inline void
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rb_ec_tag_jump(const rb_execution_context_t *ec, enum ruby_tag_type st)
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{
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ec->tag->state = st;
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ruby_longjmp(ec->tag->buf, 1);
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}
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/*
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setjmp() in assignment expression rhs is undefined behavior
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[ISO/IEC 9899:1999] 7.13.1.1
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*/
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#define EC_EXEC_TAG() \
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(ruby_setjmp(_tag.buf) ? rb_ec_tag_state(VAR_FROM_MEMORY(_ec)) : (EC_REPUSH_TAG(), 0))
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#define EC_JUMP_TAG(ec, st) rb_ec_tag_jump(ec, st)
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#define INTERNAL_EXCEPTION_P(exc) FIXNUM_P(exc)
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/* CREF operators */
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#define CREF_FL_PUSHED_BY_EVAL IMEMO_FL_USER1
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#define CREF_FL_OMOD_SHARED IMEMO_FL_USER2
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static inline VALUE
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CREF_CLASS(const rb_cref_t *cref)
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{
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return cref->klass;
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}
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static inline rb_cref_t *
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CREF_NEXT(const rb_cref_t *cref)
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{
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return cref->next;
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}
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static inline const rb_scope_visibility_t *
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CREF_SCOPE_VISI(const rb_cref_t *cref)
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{
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return &cref->scope_visi;
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}
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static inline VALUE
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CREF_REFINEMENTS(const rb_cref_t *cref)
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{
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return cref->refinements;
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}
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static inline void
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CREF_REFINEMENTS_SET(rb_cref_t *cref, VALUE refs)
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{
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RB_OBJ_WRITE(cref, &cref->refinements, refs);
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}
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static inline int
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CREF_PUSHED_BY_EVAL(const rb_cref_t *cref)
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{
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return cref->flags & CREF_FL_PUSHED_BY_EVAL;
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}
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static inline void
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CREF_PUSHED_BY_EVAL_SET(rb_cref_t *cref)
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{
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cref->flags |= CREF_FL_PUSHED_BY_EVAL;
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}
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static inline int
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CREF_OMOD_SHARED(const rb_cref_t *cref)
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{
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return cref->flags & CREF_FL_OMOD_SHARED;
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}
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static inline void
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CREF_OMOD_SHARED_SET(rb_cref_t *cref)
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{
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cref->flags |= CREF_FL_OMOD_SHARED;
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}
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static inline void
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CREF_OMOD_SHARED_UNSET(rb_cref_t *cref)
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{
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cref->flags &= ~CREF_FL_OMOD_SHARED;
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}
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enum {
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RAISED_EXCEPTION = 1,
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RAISED_STACKOVERFLOW = 2,
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RAISED_NOMEMORY = 4
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};
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#define rb_ec_raised_set(ec, f) ((ec)->raised_flag |= (f))
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#define rb_ec_raised_reset(ec, f) ((ec)->raised_flag &= ~(f))
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#define rb_ec_raised_p(ec, f) (((ec)->raised_flag & (f)) != 0)
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#define rb_ec_raised_clear(ec) ((ec)->raised_flag = 0)
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int rb_ec_set_raised(rb_execution_context_t *ec);
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int rb_ec_reset_raised(rb_execution_context_t *ec);
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int rb_ec_stack_check(rb_execution_context_t *ec);
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VALUE rb_f_eval(int argc, const VALUE *argv, VALUE self);
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VALUE rb_make_exception(int argc, const VALUE *argv);
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NORETURN(void rb_method_name_error(VALUE, VALUE));
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NORETURN(void rb_fiber_start(void));
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NORETURN(void rb_print_undef(VALUE, ID, rb_method_visibility_t));
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NORETURN(void rb_print_undef_str(VALUE, VALUE));
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NORETURN(void rb_print_inaccessible(VALUE, ID, rb_method_visibility_t));
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NORETURN(void rb_vm_localjump_error(const char *,VALUE, int));
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NORETURN(void rb_vm_jump_tag_but_local_jump(int));
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VALUE rb_vm_make_jump_tag_but_local_jump(int state, VALUE val);
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rb_cref_t *rb_vm_cref(void);
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rb_cref_t *rb_vm_cref_replace_with_duplicated_cref(void);
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VALUE rb_vm_call_cfunc(VALUE recv, VALUE (*func)(VALUE), VALUE arg, VALUE block_handler, VALUE filename);
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void rb_vm_set_progname(VALUE filename);
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void rb_thread_terminate_all(void);
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VALUE rb_vm_cbase(void);
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/* vm_backtrace.c */
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VALUE rb_ec_backtrace_object(const rb_execution_context_t *ec);
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VALUE rb_ec_backtrace_str_ary(const rb_execution_context_t *ec, long lev, long n);
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VALUE rb_ec_backtrace_location_ary(const rb_execution_context_t *ec, long lev, long n, bool skip_internal);
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#ifndef CharNext /* defined as CharNext[AW] on Windows. */
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# ifdef HAVE_MBLEN
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# define CharNext(p) ((p) + mblen((p), RUBY_MBCHAR_MAXSIZE))
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# else
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# define CharNext(p) ((p) + 1)
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# endif
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#endif
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#if defined DOSISH || defined __CYGWIN__
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static inline void
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translit_char(char *p, int from, int to)
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{
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while (*p) {
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if ((unsigned char)*p == from)
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*p = to;
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p = CharNext(p);
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}
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}
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#endif
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#endif /* RUBY_EVAL_INTERN_H */
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