/* scope.h
*
* Copyright (C) 1993, 1994, 1996, 1997, 1998, 1999,
- * 2000, 2001, 2002, 2004, 2005 by Larry Wall and others
+ * 2000, 2001, 2002, 2004, 2005, 2006, 2007 by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
#define SAVEt_BOOL 38
#define SAVEt_SET_SVFLAGS 39
#define SAVEt_SAVESWITCHSTACK 40
+#define SAVEt_COP_ARYBASE 41
+#define SAVEt_RE_STATE 42
+#define SAVEt_COMPILE_WARNINGS 43
+#define SAVEt_STACK_CXPOS 44
+#define SAVEt_PARSER 45
#ifndef SCOPE_SAVES_SIGNAL_MASK
#define SCOPE_SAVES_SIGNAL_MASK 0
#endif
-#define SSCHECK(need) if (PL_savestack_ix + (need) > PL_savestack_max) savestack_grow()
-#define SSGROW(need) if (PL_savestack_ix + (need) > PL_savestack_max) savestack_grow_cnt(need)
+#define SSCHECK(need) if (PL_savestack_ix + (I32)(need) > PL_savestack_max) savestack_grow()
+#define SSGROW(need) if (PL_savestack_ix + (I32)(need) > PL_savestack_max) savestack_grow_cnt(need)
#define SSPUSHINT(i) (PL_savestack[PL_savestack_ix++].any_i32 = (I32)(i))
#define SSPUSHLONG(i) (PL_savestack[PL_savestack_ix++].any_long = (long)(i))
#define SSPUSHBOOL(p) (PL_savestack[PL_savestack_ix++].any_bool = (p))
#endif
#define LEAVE_SCOPE(old) if (PL_savestack_ix > old) leave_scope(old)
-/*
- * Not using SOFT_CAST on SAVESPTR, SAVEGENERICSV and SAVEFREESV
- * because these are used for several kinds of pointer values
- */
-#define SAVEI8(i) save_I8(SOFT_CAST(I8*)&(i))
-#define SAVEI16(i) save_I16(SOFT_CAST(I16*)&(i))
-#define SAVEI32(i) save_I32(SOFT_CAST(I32*)&(i))
-#define SAVEINT(i) save_int(SOFT_CAST(int*)&(i))
-#define SAVEIV(i) save_iv(SOFT_CAST(IV*)&(i))
-#define SAVELONG(l) save_long(SOFT_CAST(long*)&(l))
-#define SAVEBOOL(b) save_bool(SOFT_CAST(bool*)&(b))
+#define SAVEI8(i) save_I8((I8*)&(i))
+#define SAVEI16(i) save_I16((I16*)&(i))
+#define SAVEI32(i) save_I32((I32*)&(i))
+#define SAVEINT(i) save_int((int*)&(i))
+#define SAVEIV(i) save_iv((IV*)&(i))
+#define SAVELONG(l) save_long((long*)&(l))
+#define SAVEBOOL(b) save_bool((bool*)&(b))
#define SAVESPTR(s) save_sptr((SV**)&(s))
-#define SAVEPPTR(s) save_pptr(SOFT_CAST(char**)&(s))
+#define SAVEPPTR(s) save_pptr((char**)&(s))
#define SAVEVPTR(s) save_vptr((void*)&(s))
#define SAVEPADSV(s) save_padsv(s)
#define SAVEFREESV(s) save_freesv((SV*)(s))
#define SAVEMORTALIZESV(s) save_mortalizesv((SV*)(s))
-#define SAVEFREEOP(o) save_freeop(SOFT_CAST(OP*)(o))
-#define SAVEFREEPV(p) save_freepv(SOFT_CAST(char*)(p))
-#define SAVECLEARSV(sv) save_clearsv(SOFT_CAST(SV**)&(sv))
+#define SAVEFREEOP(o) save_freeop((OP*)(o))
+#define SAVEFREEPV(p) save_freepv((char*)(p))
+#define SAVECLEARSV(sv) save_clearsv((SV**)&(sv))
#define SAVEGENERICSV(s) save_generic_svref((SV**)&(s))
#define SAVEGENERICPV(s) save_generic_pvref((char**)&(s))
#define SAVESHAREDPV(s) save_shared_pvref((char**)&(s))
#define SAVESETSVFLAGS(sv,mask,val) save_set_svflags(sv,mask,val)
#define SAVEDELETE(h,k,l) \
- save_delete(SOFT_CAST(HV*)(h), SOFT_CAST(char*)(k), (I32)(l))
+ save_delete((HV*)(h), (char*)(k), (I32)(l))
#define SAVEDESTRUCTOR(f,p) \
- save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), SOFT_CAST(void*)(p))
+ save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), (void*)(p))
#define SAVEDESTRUCTOR_X(f,p) \
- save_destructor_x((DESTRUCTORFUNC_t)(f), SOFT_CAST(void*)(p))
+ save_destructor_x((DESTRUCTORFUNC_t)(f), (void*)(p))
#define SAVESTACK_POS() \
STMT_START { \
#define SAVEHINTS() \
STMT_START { \
- SSCHECK(3); \
+ SSCHECK(4); \
if (PL_hints & HINT_LOCALIZE_HH) { \
SSPUSHPTR(GvHV(PL_hintgv)); \
- GvHV(PL_hintgv) = newHVhv(GvHV(PL_hintgv)); \
+ GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)); \
} \
+ if (PL_compiling.cop_hints_hash) { \
+ HINTS_REFCNT_LOCK; \
+ PL_compiling.cop_hints_hash->refcounted_he_refcnt++; \
+ HINTS_REFCNT_UNLOCK; \
+ } \
+ SSPUSHPTR(PL_compiling.cop_hints_hash); \
SSPUSHINT(PL_hints); \
SSPUSHINT(SAVEt_HINTS); \
} STMT_END
PL_curstackinfo->si_stack = (t); \
} STMT_END
+#define SAVECOPARYBASE(c) \
+ STMT_START { \
+ SSCHECK(3); \
+ SSPUSHINT(CopARYBASE_get(c)); \
+ SSPUSHPTR(c); \
+ SSPUSHINT(SAVEt_COP_ARYBASE); \
+ } STMT_END
+
+/* Need to do the cop warnings like this, rather than a "SAVEFREESHAREDPV",
+ because realloc() means that the value can actually change. Possibly
+ could have done savefreesharedpvREF, but this way actually seems cleaner,
+ as it simplifies the code that does the saves, and reduces the load on the
+ save stack. */
+#define SAVECOMPILEWARNINGS() \
+ STMT_START { \
+ SSCHECK(2); \
+ SSPUSHPTR(PL_compiling.cop_warnings); \
+ SSPUSHINT(SAVEt_COMPILE_WARNINGS); \
+ } STMT_END
+
+#define SAVESTACK_CXPOS() \
+ STMT_START { \
+ SSCHECK(3); \
+ SSPUSHINT(cxstack[cxstack_ix].blk_oldsp); \
+ SSPUSHINT(cxstack_ix); \
+ SSPUSHINT(SAVEt_STACK_CXPOS); \
+ } STMT_END
+
+#define SAVEPARSER(p) \
+ STMT_START { \
+ SSCHECK(2); \
+ SSPUSHPTR(p); \
+ SSPUSHINT(SAVEt_PARSER); \
+ } STMT_END
+
#ifdef USE_ITHREADS
# define SAVECOPSTASH(c) SAVEPPTR(CopSTASHPV(c))
# define SAVECOPSTASH_FREE(c) SAVESHAREDPV(CopSTASHPV(c))
# define SAVECOPFILE(c) SAVEPPTR(CopFILE(c))
# define SAVECOPFILE_FREE(c) SAVESHAREDPV(CopFILE(c))
+# define SAVECOPLABEL(c) SAVEPPTR(CopLABEL(c))
+# define SAVECOPLABEL_FREE(c) SAVESHAREDPV(CopLABEL(c))
#else
# define SAVECOPSTASH(c) SAVESPTR(CopSTASH(c))
# define SAVECOPSTASH_FREE(c) SAVECOPSTASH(c) /* XXX not refcounted */
# define SAVECOPFILE(c) SAVESPTR(CopFILEGV(c))
# define SAVECOPFILE_FREE(c) SAVEGENERICSV(CopFILEGV(c))
+# define SAVECOPLABEL(c) SAVEPPTR(CopLABEL(c))
+# define SAVECOPLABEL_FREE(c) SAVEPPTR(CopLABEL(c))
#endif
#define SAVECOPLINE(c) SAVEI32(CopLINE(c))
* SSNEWa() works like SSNEW(), but also aligns the data to the specified
* number of bytes. MEM_ALIGNBYTES is perhaps the most useful. The
* alignment will be preserved therough savestack reallocation *only* if
- * realloc returns data aligned to a size divisible by `align'!
+ * realloc returns data aligned to a size divisible by "align"!
*
* SSPTR() converts the index returned by SSNEW/SSNEWa() into a pointer.
*/
#define SSPTR(off,type) ((type) ((char*)PL_savestack + off))
#define SSPTRt(off,type) ((type*) ((char*)PL_savestack + off))
-/* A jmpenv packages the state required to perform a proper non-local jump.
- * Note that there is a start_env initialized when perl starts, and top_env
- * points to this initially, so top_env should always be non-null.
- *
- * Existence of a non-null top_env->je_prev implies it is valid to call
- * longjmp() at that runlevel (we make sure start_env.je_prev is always
- * null to ensure this).
- *
- * je_mustcatch, when set at any runlevel to TRUE, means eval ops must
- * establish a local jmpenv to handle exception traps. Care must be taken
- * to restore the previous value of je_mustcatch before exiting the
- * stack frame iff JMPENV_PUSH was not called in that stack frame.
- * GSAR 97-03-27
- */
-
-struct jmpenv {
- struct jmpenv * je_prev;
- Sigjmp_buf je_buf; /* only for use if !je_throw */
- int je_ret; /* last exception thrown */
- bool je_mustcatch; /* need to call longjmp()? */
-};
-
-typedef struct jmpenv JMPENV;
-
-#ifdef OP_IN_REGISTER
-#define OP_REG_TO_MEM PL_opsave = op
-#define OP_MEM_TO_REG op = PL_opsave
-#else
-#define OP_REG_TO_MEM NOOP
-#define OP_MEM_TO_REG NOOP
-#endif
-
-/*
- * How to build the first jmpenv.
- *
- * top_env needs to be non-zero. It points to an area
- * in which longjmp() stuff is stored, as C callstack
- * info there at least is thread specific this has to
- * be per-thread. Otherwise a 'die' in a thread gives
- * that thread the C stack of last thread to do an eval {}!
- */
-
-#define JMPENV_BOOTSTRAP \
- STMT_START { \
- Zero(&PL_start_env, 1, JMPENV); \
- PL_start_env.je_ret = -1; \
- PL_start_env.je_mustcatch = TRUE; \
- PL_top_env = &PL_start_env; \
- } STMT_END
-
-/*
- * PERL_FLEXIBLE_EXCEPTIONS
- *
- * All the flexible exceptions code has been removed.
- * See the following threads for details:
- *
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2004-07/msg00378.html
- *
- * Joshua's original patches (which weren't applied) and discussion:
- *
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01396.html
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01489.html
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01491.html
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg01608.html
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02144.html
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1998-02/msg02998.html
- *
- * Chip's reworked patch and discussion:
- *
- * http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/1999-03/msg00520.html
- *
- * The flaw in these patches (which went unnoticed at the time) was
- * that they moved some code that could potentially die() out of the
- * region protected by the setjmp()s. This caused exceptions within
- * END blocks and such to not be handled by the correct setjmp().
- *
- * The original patches that introduces flexible exceptions were:
- *
- * http://public.activestate.com/cgi-bin/perlbrowse?patch=3386
- * http://public.activestate.com/cgi-bin/perlbrowse?patch=5162
- */
-
-#define dJMPENV JMPENV cur_env
-
-#define JMPENV_PUSH(v) \
- STMT_START { \
- DEBUG_l(Perl_deb(aTHX_ "Setting up jumplevel %p, was %p\n", \
- &cur_env, PL_top_env)); \
- cur_env.je_prev = PL_top_env; \
- OP_REG_TO_MEM; \
- cur_env.je_ret = PerlProc_setjmp(cur_env.je_buf, SCOPE_SAVES_SIGNAL_MASK); \
- OP_MEM_TO_REG; \
- PL_top_env = &cur_env; \
- cur_env.je_mustcatch = FALSE; \
- (v) = cur_env.je_ret; \
- } STMT_END
-
-#define JMPENV_POP \
- STMT_START { \
- DEBUG_l(Perl_deb(aTHX_ "popping jumplevel was %p, now %p\n", \
- PL_top_env, cur_env.je_prev)); \
- PL_top_env = cur_env.je_prev; \
- } STMT_END
-
-#define JMPENV_JUMP(v) \
- STMT_START { \
- OP_REG_TO_MEM; \
- if (PL_top_env->je_prev) \
- PerlProc_longjmp(PL_top_env->je_buf, (v)); \
- if ((v) == 2) \
- PerlProc_exit(STATUS_NATIVE_EXPORT); \
- PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); \
- PerlProc_exit(1); \
- } STMT_END
-
-#define CATCH_GET (PL_top_env->je_mustcatch)
-#define CATCH_SET(v) (PL_top_env->je_mustcatch = (v))
-