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/* scope.h
*
* Copyright (C) 1993, 1994, 1996, 1997, 1998, 1999,
* 2000, 2001, 2002, 2004, 2005 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_ITEM 0
#define SAVEt_SV 1
#define SAVEt_AV 2
#define SAVEt_HV 3
#define SAVEt_INT 4
#define SAVEt_LONG 5
#define SAVEt_I32 6
#define SAVEt_IV 7
#define SAVEt_SPTR 8
#define SAVEt_APTR 9
#define SAVEt_HPTR 10
#define SAVEt_PPTR 11
#define SAVEt_NSTAB 12
#define SAVEt_SVREF 13
#define SAVEt_GP 14
#define SAVEt_FREESV 15
#define SAVEt_FREEOP 16
#define SAVEt_FREEPV 17
#define SAVEt_CLEARSV 18
#define SAVEt_DELETE 19
#define SAVEt_DESTRUCTOR 20
#define SAVEt_REGCONTEXT 21
#define SAVEt_STACK_POS 22
#define SAVEt_I16 23
#define SAVEt_AELEM 24
#define SAVEt_HELEM 25
#define SAVEt_OP 26
#define SAVEt_HINTS 27
#define SAVEt_ALLOC 28
#define SAVEt_GENERIC_SVREF 29
#define SAVEt_DESTRUCTOR_X 30
#define SAVEt_VPTR 31
#define SAVEt_I8 32
#define SAVEt_COMPPAD 33
#define SAVEt_GENERIC_PVREF 34
#define SAVEt_PADSV 35
#define SAVEt_MORTALIZESV 36
#define SAVEt_SHARED_PVREF 37
#define SAVEt_BOOL 38
#define SAVEt_SET_SVFLAGS 39
#define SAVEt_SAVESWITCHSTACK 40
#define SAVEt_COP_ARYBASE 41
#define SAVEt_RE_STATE 42
#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 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))
#define SSPUSHIV(i) (PL_savestack[PL_savestack_ix++].any_iv = (IV)(i))
#define SSPUSHPTR(p) (PL_savestack[PL_savestack_ix++].any_ptr = (void*)(p))
#define SSPUSHDPTR(p) (PL_savestack[PL_savestack_ix++].any_dptr = (p))
#define SSPUSHDXPTR(p) (PL_savestack[PL_savestack_ix++].any_dxptr = (p))
#define SSPOPINT (PL_savestack[--PL_savestack_ix].any_i32)
#define SSPOPLONG (PL_savestack[--PL_savestack_ix].any_long)
#define SSPOPBOOL (PL_savestack[--PL_savestack_ix].any_bool)
#define SSPOPIV (PL_savestack[--PL_savestack_ix].any_iv)
#define SSPOPPTR (PL_savestack[--PL_savestack_ix].any_ptr)
#define SSPOPDPTR (PL_savestack[--PL_savestack_ix].any_dptr)
#define SSPOPDXPTR (PL_savestack[--PL_savestack_ix].any_dxptr)
/*
=head1 Callback Functions
=for apidoc Ams||SAVETMPS
Opening bracket for temporaries on a callback. See C<FREETMPS> and
L<perlcall>.
=for apidoc Ams||FREETMPS
Closing bracket for temporaries on a callback. See C<SAVETMPS> and
L<perlcall>.
=for apidoc Ams||ENTER
Opening bracket on a callback. See C<LEAVE> and L<perlcall>.
=for apidoc Ams||LEAVE
Closing bracket on a callback. See C<ENTER> and L<perlcall>.
=cut
*/
#define SAVETMPS save_int((int*)&PL_tmps_floor), PL_tmps_floor = PL_tmps_ix
#define FREETMPS if (PL_tmps_ix > PL_tmps_floor) free_tmps()
#ifdef DEBUGGING
#define ENTER \
STMT_START { \
push_scope(); \
DEBUG_SCOPE("ENTER") \
} STMT_END
#define LEAVE \
STMT_START { \
DEBUG_SCOPE("LEAVE") \
pop_scope(); \
} STMT_END
#else
#define ENTER push_scope()
#define LEAVE pop_scope()
#endif
#define LEAVE_SCOPE(old) if (PL_savestack_ix > old) leave_scope(old)
#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((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((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((HV*)(h), (char*)(k), (I32)(l))
#define SAVEDESTRUCTOR(f,p) \
save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), (void*)(p))
#define SAVEDESTRUCTOR_X(f,p) \
save_destructor_x((DESTRUCTORFUNC_t)(f), (void*)(p))
#define SAVESTACK_POS() \
STMT_START { \
SSCHECK(2); \
SSPUSHINT(PL_stack_sp - PL_stack_base); \
SSPUSHINT(SAVEt_STACK_POS); \
} STMT_END
#define SAVEOP() save_op()
#define SAVEHINTS() \
STMT_START { \
SSCHECK(4); \
if (PL_hints & HINT_LOCALIZE_HH) { \
SSPUSHPTR(GvHV(PL_hintgv)); \
GvHV(PL_hintgv) = Perl_hv_copy_hints_hv(aTHX_ GvHV(PL_hintgv)); \
} \
if (PL_compiling.cop_hints) { \
HINTS_REFCNT_LOCK; \
PL_compiling.cop_hints->refcounted_he_refcnt++; \
HINTS_REFCNT_UNLOCK; \
} \
SSPUSHPTR(PL_compiling.cop_hints); \
SSPUSHINT(PL_hints); \
SSPUSHINT(SAVEt_HINTS); \
} STMT_END
#define SAVECOMPPAD() \
STMT_START { \
SSCHECK(2); \
SSPUSHPTR((SV*)PL_comppad); \
SSPUSHINT(SAVEt_COMPPAD); \
} STMT_END
#define SAVESWITCHSTACK(f,t) \
STMT_START { \
SSCHECK(3); \
SSPUSHPTR((SV*)(f)); \
SSPUSHPTR((SV*)(t)); \
SSPUSHINT(SAVEt_SAVESWITCHSTACK); \
SWITCHSTACK((f),(t)); \
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
#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))
#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))
#endif
#define SAVECOPLINE(c) SAVEI32(CopLINE(c))
/* SSNEW() temporarily allocates a specified number of bytes of data on the
* savestack. It returns an integer index into the savestack, because a
* pointer would get broken if the savestack is moved on reallocation.
* 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"!
*
* SSPTR() converts the index returned by SSNEW/SSNEWa() into a pointer.
*/
#define SSNEW(size) Perl_save_alloc(aTHX_ (size), 0)
#define SSNEWt(n,t) SSNEW((n)*sizeof(t))
#define SSNEWa(size,align) Perl_save_alloc(aTHX_ (size), \
(align - ((int)((caddr_t)&PL_savestack[PL_savestack_ix]) % align)) % align)
#define SSNEWat(n,t,align) SSNEWa((n)*sizeof(t), align)
#define SSPTR(off,type) ((type) ((char*)PL_savestack + off))
#define SSPTRt(off,type) ((type*) ((char*)PL_savestack + off))
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