This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
Skip the scope name checks if PL_scopestack_name is NULL.
[perl5.git] / scope.h
CommitLineData
d6376244
JH
1/* scope.h
2 *
1129b882
NC
3 * Copyright (C) 1993, 1994, 1996, 1997, 1998, 1999, 2000, 2001,
4 * 2002, 2004, 2005, 2006, 2007, 2008 by Larry Wall and others
d6376244
JH
5 *
6 * You may distribute under the terms of either the GNU General Public
7 * License or the Artistic License, as specified in the README file.
8 *
9 */
10
b9d12d37
GS
11#define SAVEt_ITEM 0
12#define SAVEt_SV 1
13#define SAVEt_AV 2
14#define SAVEt_HV 3
15#define SAVEt_INT 4
16#define SAVEt_LONG 5
17#define SAVEt_I32 6
18#define SAVEt_IV 7
19#define SAVEt_SPTR 8
20#define SAVEt_APTR 9
21#define SAVEt_HPTR 10
22#define SAVEt_PPTR 11
23#define SAVEt_NSTAB 12
24#define SAVEt_SVREF 13
25#define SAVEt_GP 14
26#define SAVEt_FREESV 15
27#define SAVEt_FREEOP 16
28#define SAVEt_FREEPV 17
29#define SAVEt_CLEARSV 18
30#define SAVEt_DELETE 19
31#define SAVEt_DESTRUCTOR 20
32#define SAVEt_REGCONTEXT 21
33#define SAVEt_STACK_POS 22
34#define SAVEt_I16 23
35#define SAVEt_AELEM 24
36#define SAVEt_HELEM 25
37#define SAVEt_OP 26
38#define SAVEt_HINTS 27
39#define SAVEt_ALLOC 28
40#define SAVEt_GENERIC_SVREF 29
c76ac1ee 41#define SAVEt_DESTRUCTOR_X 30
7766f137 42#define SAVEt_VPTR 31
e8347627 43#define SAVEt_I8 32
354992b1 44#define SAVEt_COMPPAD 33
f4dd75d9 45#define SAVEt_GENERIC_PVREF 34
09edbca0 46#define SAVEt_PADSV_AND_MORTALIZE 35
26d9b02f 47#define SAVEt_MORTALIZESV 36
05ec9bb3 48#define SAVEt_SHARED_PVREF 37
9febdf04 49#define SAVEt_BOOL 38
14f338dc 50#define SAVEt_SET_SVFLAGS 39
8b7059b1 51#define SAVEt_SAVESWITCHSTACK 40
fc15ae8f 52#define SAVEt_COP_ARYBASE 41
1ade1aa1 53#define SAVEt_RE_STATE 42
68da3b2f 54#define SAVEt_COMPILE_WARNINGS 43
ea8d6ae1 55#define SAVEt_STACK_CXPOS 44
7c197c94 56#define SAVEt_PARSER 45
c68ec7a9 57#define SAVEt_ADELETE 46
79072805 58
af7df257 59#define SAVEf_SETMAGIC 1
75d34a09 60#define SAVEf_KEEPOLDELEM 2
af7df257 61
91d1c79f 62#define save_aelem(av,idx,sptr) save_aelem_flags(av,idx,sptr,SAVEf_SETMAGIC)
af7df257
CS
63#define save_helem(hv,key,sptr) save_helem_flags(hv,key,sptr,SAVEf_SETMAGIC)
64
b03c0a3a 65#ifndef SCOPE_SAVES_SIGNAL_MASK
1b266415 66#define SCOPE_SAVES_SIGNAL_MASK 0
b03c0a3a
NIS
67#endif
68
bb7a0f54
MHM
69#define SSCHECK(need) if (PL_savestack_ix + (I32)(need) > PL_savestack_max) savestack_grow()
70#define SSGROW(need) if (PL_savestack_ix + (I32)(need) > PL_savestack_max) savestack_grow_cnt(need)
3280af22
NIS
71#define SSPUSHINT(i) (PL_savestack[PL_savestack_ix++].any_i32 = (I32)(i))
72#define SSPUSHLONG(i) (PL_savestack[PL_savestack_ix++].any_long = (long)(i))
9febdf04 73#define SSPUSHBOOL(p) (PL_savestack[PL_savestack_ix++].any_bool = (p))
3280af22
NIS
74#define SSPUSHIV(i) (PL_savestack[PL_savestack_ix++].any_iv = (IV)(i))
75#define SSPUSHPTR(p) (PL_savestack[PL_savestack_ix++].any_ptr = (void*)(p))
76#define SSPUSHDPTR(p) (PL_savestack[PL_savestack_ix++].any_dptr = (p))
c76ac1ee 77#define SSPUSHDXPTR(p) (PL_savestack[PL_savestack_ix++].any_dxptr = (p))
3280af22
NIS
78#define SSPOPINT (PL_savestack[--PL_savestack_ix].any_i32)
79#define SSPOPLONG (PL_savestack[--PL_savestack_ix].any_long)
9febdf04 80#define SSPOPBOOL (PL_savestack[--PL_savestack_ix].any_bool)
3280af22
NIS
81#define SSPOPIV (PL_savestack[--PL_savestack_ix].any_iv)
82#define SSPOPPTR (PL_savestack[--PL_savestack_ix].any_ptr)
83#define SSPOPDPTR (PL_savestack[--PL_savestack_ix].any_dptr)
c76ac1ee 84#define SSPOPDXPTR (PL_savestack[--PL_savestack_ix].any_dxptr)
8990e307 85
954c1994 86/*
ccfc67b7
JH
87=head1 Callback Functions
88
954c1994
GS
89=for apidoc Ams||SAVETMPS
90Opening bracket for temporaries on a callback. See C<FREETMPS> and
91L<perlcall>.
92
93=for apidoc Ams||FREETMPS
94Closing bracket for temporaries on a callback. See C<SAVETMPS> and
95L<perlcall>.
96
97=for apidoc Ams||ENTER
98Opening bracket on a callback. See C<LEAVE> and L<perlcall>.
99
100=for apidoc Ams||LEAVE
101Closing bracket on a callback. See C<ENTER> and L<perlcall>.
102
d343c3ef
GG
103=over
104
105=item ENTER_with_name(name)
106
107Same as C<ENTER>, but when debugging is enabled it also associates the
108given literal string with the new scope.
109
110=item LEAVE_with_name(name)
111
112Same as C<LEAVE>, but when debugging is enabled it first checks that the
113scope has the given name. Name must be a literal string.
114
115=back
116
954c1994
GS
117=cut
118*/
119
3280af22
NIS
120#define SAVETMPS save_int((int*)&PL_tmps_floor), PL_tmps_floor = PL_tmps_ix
121#define FREETMPS if (PL_tmps_ix > PL_tmps_floor) free_tmps()
a0d0e21e 122
f46d017c
GS
123#ifdef DEBUGGING
124#define ENTER \
125 STMT_START { \
126 push_scope(); \
b4ab917c 127 DEBUG_SCOPE("ENTER") \
f46d017c
GS
128 } STMT_END
129#define LEAVE \
130 STMT_START { \
b4ab917c 131 DEBUG_SCOPE("LEAVE") \
f46d017c
GS
132 pop_scope(); \
133 } STMT_END
d343c3ef
GG
134#define ENTER_with_name(name) \
135 STMT_START { \
136 push_scope(); \
a09dc31d
NC
137 if (PL_scopestack_name) \
138 PL_scopestack_name[PL_scopestack_ix-1] = name; \
d343c3ef
GG
139 DEBUG_SCOPE("ENTER \"" name "\"") \
140 } STMT_END
141#define LEAVE_with_name(name) \
142 STMT_START { \
143 DEBUG_SCOPE("LEAVE \"" name "\"") \
a09dc31d
NC
144 if (PL_scopestack_name) { \
145 assert(((char*)PL_scopestack_name[PL_scopestack_ix-1] \
146 == (char*)name) \
147 || strEQ(PL_scopestack_name[PL_scopestack_ix-1], name)); \
148 } \
d343c3ef
GG
149 pop_scope(); \
150 } STMT_END
f46d017c 151#else
a0d0e21e
LW
152#define ENTER push_scope()
153#define LEAVE pop_scope()
d343c3ef
GG
154#define ENTER_with_name(name) ENTER
155#define LEAVE_with_name(name) LEAVE
f46d017c 156#endif
3280af22 157#define LEAVE_SCOPE(old) if (PL_savestack_ix > old) leave_scope(old)
a0d0e21e 158
3f26ef39
NC
159#define SAVEI8(i) save_I8((I8*)&(i))
160#define SAVEI16(i) save_I16((I16*)&(i))
161#define SAVEI32(i) save_I32((I32*)&(i))
162#define SAVEINT(i) save_int((int*)&(i))
163#define SAVEIV(i) save_iv((IV*)&(i))
164#define SAVELONG(l) save_long((long*)&(l))
165#define SAVEBOOL(b) save_bool((bool*)&(b))
55497cff 166#define SAVESPTR(s) save_sptr((SV**)&(s))
3f26ef39 167#define SAVEPPTR(s) save_pptr((char**)&(s))
57b2e452 168#define SAVEVPTR(s) save_vptr((void*)&(s))
09edbca0 169#define SAVEPADSVANDMORTALIZE(s) save_padsv_and_mortalize(s)
b1bc3f34
NC
170#define SAVEFREESV(s) save_freesv(MUTABLE_SV(s))
171#define SAVEMORTALIZESV(s) save_mortalizesv(MUTABLE_SV(s))
3f26ef39
NC
172#define SAVEFREEOP(o) save_freeop((OP*)(o))
173#define SAVEFREEPV(p) save_freepv((char*)(p))
174#define SAVECLEARSV(sv) save_clearsv((SV**)&(sv))
b9d12d37 175#define SAVEGENERICSV(s) save_generic_svref((SV**)&(s))
f4dd75d9 176#define SAVEGENERICPV(s) save_generic_pvref((char**)&(s))
05ec9bb3 177#define SAVESHAREDPV(s) save_shared_pvref((char**)&(s))
14f338dc 178#define SAVESETSVFLAGS(sv,mask,val) save_set_svflags(sv,mask,val)
55497cff 179#define SAVEDELETE(h,k,l) \
dbebbdb4 180 save_delete(MUTABLE_HV(h), (char*)(k), (I32)(l))
af097752
VP
181#define SAVEHDELETE(h,s) \
182 save_hdelete(MUTABLE_HV(h), (s))
c68ec7a9
VP
183#define SAVEADELETE(a,k) \
184 save_adelete(MUTABLE_AV(a), (I32)(k))
55497cff 185#define SAVEDESTRUCTOR(f,p) \
3f26ef39 186 save_destructor((DESTRUCTORFUNC_NOCONTEXT_t)(f), (void*)(p))
c76ac1ee
GS
187
188#define SAVEDESTRUCTOR_X(f,p) \
3f26ef39 189 save_destructor_x((DESTRUCTORFUNC_t)(f), (void*)(p))
25eaa213
GS
190
191#define SAVESTACK_POS() \
192 STMT_START { \
193 SSCHECK(2); \
3280af22 194 SSPUSHINT(PL_stack_sp - PL_stack_base); \
25eaa213
GS
195 SSPUSHINT(SAVEt_STACK_POS); \
196 } STMT_END
197
462e5cf6 198#define SAVEOP() save_op()
25eaa213 199
da8315f8 200#define SAVEHINTS() save_hints()
354992b1 201
747e2fae 202#define SAVECOMPPAD() save_pushptr(MUTABLE_SV(PL_comppad), SAVEt_COMPPAD)
a9332b4a 203
8b7059b1
DM
204#define SAVESWITCHSTACK(f,t) \
205 STMT_START { \
dfcd3de5 206 save_pushptrptr(MUTABLE_SV(f), MUTABLE_SV(t), SAVEt_SAVESWITCHSTACK); \
8b7059b1
DM
207 SWITCHSTACK((f),(t)); \
208 PL_curstackinfo->si_stack = (t); \
209 } STMT_END
210
7623d426 211#define SAVECOPARYBASE(c) save_pushi32ptr(CopARYBASE_get(c), c, SAVEt_COP_ARYBASE);
fc15ae8f 212
c88c823b 213/* Need to do the cop warnings like this, rather than a "SAVEFREESHAREDPV",
72dc9ed5
NC
214 because realloc() means that the value can actually change. Possibly
215 could have done savefreesharedpvREF, but this way actually seems cleaner,
216 as it simplifies the code that does the saves, and reduces the load on the
217 save stack. */
747e2fae 218#define SAVECOMPILEWARNINGS() save_pushptr(PL_compiling.cop_warnings, SAVEt_COMPILE_WARNINGS)
fc15ae8f 219
ea8d6ae1
DB
220#define SAVESTACK_CXPOS() \
221 STMT_START { \
222 SSCHECK(3); \
223 SSPUSHINT(cxstack[cxstack_ix].blk_oldsp); \
224 SSPUSHINT(cxstack_ix); \
225 SSPUSHINT(SAVEt_STACK_CXPOS); \
226 } STMT_END
227
747e2fae 228#define SAVEPARSER(p) save_pushptr((p), SAVEt_PARSER)
7c197c94 229
57843af0 230#ifdef USE_ITHREADS
f4dd75d9 231# define SAVECOPSTASH(c) SAVEPPTR(CopSTASHPV(c))
05ec9bb3 232# define SAVECOPSTASH_FREE(c) SAVESHAREDPV(CopSTASHPV(c))
f4dd75d9 233# define SAVECOPFILE(c) SAVEPPTR(CopFILE(c))
05ec9bb3 234# define SAVECOPFILE_FREE(c) SAVESHAREDPV(CopFILE(c))
57843af0 235#else
f4dd75d9
GS
236# define SAVECOPSTASH(c) SAVESPTR(CopSTASH(c))
237# define SAVECOPSTASH_FREE(c) SAVECOPSTASH(c) /* XXX not refcounted */
238# define SAVECOPFILE(c) SAVESPTR(CopFILEGV(c))
239# define SAVECOPFILE_FREE(c) SAVEGENERICSV(CopFILEGV(c))
57843af0
GS
240#endif
241
dea28490 242#define SAVECOPLINE(c) SAVEI32(CopLINE(c))
57843af0 243
455ece5e
AD
244/* SSNEW() temporarily allocates a specified number of bytes of data on the
245 * savestack. It returns an integer index into the savestack, because a
246 * pointer would get broken if the savestack is moved on reallocation.
247 * SSNEWa() works like SSNEW(), but also aligns the data to the specified
248 * number of bytes. MEM_ALIGNBYTES is perhaps the most useful. The
249 * alignment will be preserved therough savestack reallocation *only* if
a0288114 250 * realloc returns data aligned to a size divisible by "align"!
455ece5e
AD
251 *
252 * SSPTR() converts the index returned by SSNEW/SSNEWa() into a pointer.
253 */
254
f2b2c1a7 255#define SSNEW(size) Perl_save_alloc(aTHX_ (size), 0)
02db2b7b 256#define SSNEWt(n,t) SSNEW((n)*sizeof(t))
f2b2c1a7 257#define SSNEWa(size,align) Perl_save_alloc(aTHX_ (size), \
6b99f28a 258 (I32)(align - ((size_t)((caddr_t)&PL_savestack[PL_savestack_ix]) % align)) % align)
02db2b7b 259#define SSNEWat(n,t,align) SSNEWa((n)*sizeof(t), align)
455ece5e 260
02db2b7b
IZ
261#define SSPTR(off,type) ((type) ((char*)PL_savestack + off))
262#define SSPTRt(off,type) ((type*) ((char*)PL_savestack + off))
455ece5e 263
2fd8beea
NC
264#define save_freesv(op) save_pushptr((void *)(op), SAVEt_FREESV)
265#define save_mortalizesv(op) save_pushptr((void *)(op), SAVEt_MORTALIZESV)
266#define save_freeop(op) save_pushptr((void *)(op), SAVEt_FREEOP)
267#define save_freepv(pv) save_pushptr((void *)(pv), SAVEt_FREEPV)
268#define save_op() save_pushptr((void *)(PL_op), SAVEt_OP)
269
e9a8c099
MHM
270/*
271 * Local variables:
272 * c-indentation-style: bsd
273 * c-basic-offset: 4
274 * indent-tabs-mode: t
275 * End:
276 *
277 * ex: set ts=8 sts=4 sw=4 noet:
278 */