[perl5.git] / util.h

/*    util.h
 *
 *    Copyright (C) 1991, 1992, 1993, 1999, 2001, 2002, 2003, 2004, 2005,
 *    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.
 *
 */

#ifndef PERL_UTIL_H_
#define PERL_UTIL_H_


#ifdef VMS
#  define PERL_FILE_IS_ABSOLUTE(f) \
	(*(f) == '/'							\
	 || (strchr(f,':')						\
	     || ((*(f) == '[' || *(f) == '<')				\
		 && (isWORDCHAR((f)[1]) || memCHRs("$-_]>",(f)[1])))))

#elif defined(WIN32) || defined(__CYGWIN__)
#  define PERL_FILE_IS_ABSOLUTE(f) \
	(*(f) == '/' || *(f) == '\\'		/* UNC/rooted path */	\
	 || ((f)[0] && (f)[1] == ':'))		/* drive name */
#elif defined(NETWARE)
#  define PERL_FILE_IS_ABSOLUTE(f) \
	(((f)[0] && (f)[1] == ':')		/* drive name */	\
	 || ((f)[0] == '\\' && (f)[1] == '\\')	/* UNC path */	\
	 ||	((f)[3] == ':'))				/* volume name, currently only sys */
#elif defined(DOSISH)
#  define PERL_FILE_IS_ABSOLUTE(f) \
	(*(f) == '/'							\
	 || ((f)[0] && (f)[1] == ':'))		/* drive name */
#else	/* NOT DOSISH */
#  define PERL_FILE_IS_ABSOLUTE(f)	(*(f) == '/')
#endif

/*
=head1 Miscellaneous Functions

=for apidoc ibcmp

This is a synonym for S<C<(! foldEQ())>>

=for apidoc ibcmp_locale

This is a synonym for S<C<(! foldEQ_locale())>>

=for apidoc ibcmp_utf8

This is a synonym for S<C<(! foldEQ_utf8())>>

=cut
*/
#define ibcmp(s1, s2, len)         cBOOL(! foldEQ(s1, s2, len))
#define ibcmp_locale(s1, s2, len)  cBOOL(! foldEQ_locale(s1, s2, len))
#define ibcmp_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2) \
		    cBOOL(! foldEQ_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2))

/* outside the core, perl.h undefs HAS_QUAD if IV isn't 64-bit
   We can't swap this to HAS_QUAD, because the logic here affects the type of
   perl_drand48_t below, and that is visible outside of the core.  */
#if defined(U64TYPE)
/* use a faster implementation when quads are available */
#    define PERL_DRAND48_QUAD
#endif

#ifdef PERL_DRAND48_QUAD

/* U64 is only defined under PERL_CORE, but this needs to be visible
 * elsewhere so the definition of PerlInterpreter is complete.
 */
typedef U64TYPE perl_drand48_t;

#else

struct PERL_DRAND48_T {
    U16 seed[3];
};

typedef struct PERL_DRAND48_T perl_drand48_t;

#endif

#define PL_RANDOM_STATE_TYPE perl_drand48_t

#define Perl_drand48_init(seed) (Perl_drand48_init_r(&PL_random_state, (seed)))
#define Perl_drand48() (Perl_drand48_r(&PL_random_state))

#ifdef PERL_CORE
/* uses a different source of randomness to avoid interfering with the results
 * of rand() */
#define Perl_internal_drand48() (Perl_drand48_r(&PL_internal_random_state))
#endif

#ifdef USE_C_BACKTRACE

typedef struct {
    /* The number of frames returned. */
    UV frame_count;
    /* The total size of the Perl_c_backtrace, including this header,
     * the frames, and the name strings. */
    UV total_bytes;
} Perl_c_backtrace_header;

typedef struct {
    void*  addr;  /* the program counter at this frame */

    /* We could use Dl_info (as used by dladdr()) for many of these but
     * that would be naughty towards non-dlfcn systems (hi there, Win32). */

    void*  symbol_addr; /* symbol address (hint: try symbol_addr - addr) */
    void*  object_base_addr;   /* base address of the shared object */

    /* The offsets are from the beginning of the whole backtrace,
     * which makes the backtrace relocatable. */
    STRLEN object_name_offset; /* pathname of the shared object */
    STRLEN object_name_size;   /* length of the pathname */
    STRLEN symbol_name_offset; /* symbol name */
    STRLEN symbol_name_size;   /* length of the symbol name */
    STRLEN source_name_offset; /* source code file name */
    STRLEN source_name_size;   /* length of the source code file name */
    STRLEN source_line_number; /* source code line number */

    /* OS X notes: atos(1) (more recently, "xcrun atos"), but the C
     * API atos() uses is unknown (private "Symbolicator" framework,
     * might require Objective-C even if the API would be known).
     * Currently we open read pipe to "xcrun atos" and parse the
     * output - quite disgusting.  And that won't work if the
     * Developer Tools isn't installed. */

    /* FreeBSD notes: execinfo.h exists, but probably would need also
     * the library -lexecinfo.  BFD exists if the pkg devel/binutils
     * has been installed, but there seems to be a known problem that
     * the "bfd.h" getting installed refers to "ansidecl.h", which
     * doesn't get installed. */

    /* Win32 notes: as moral equivalents of backtrace() + dladdr(),
     * one could possibly first use GetCurrentProcess() +
     * SymInitialize(), and then CaptureStackBackTrace() +
     * SymFromAddr(). */

    /* Note that using the compiler optimizer easily leads into much
     * of this information, like the symbol names (think inlining),
     * and source code locations getting lost or confused.  In many
     * cases keeping the debug information (-g) is necessary.
     *
     * Note that for example with gcc you can do both -O and -g.
     *
     * Note, however, that on some platforms (e.g. OSX + clang (cc))
     * backtrace() + dladdr() works fine without -g. */

    /* For example: the mere presence of <bfd.h> is no guarantee: e.g.
     * OS X has that, but BFD does not seem to work on the OSX executables.
     *
     * Another niceness would be to able to see something about
     * the function arguments, however gdb/lldb manage to do that. */
} Perl_c_backtrace_frame;

typedef struct {
    Perl_c_backtrace_header header;
    Perl_c_backtrace_frame  frame_info[1];
    /* After the header come:
     * (1) header.frame_count frames
     * (2) frame_count times the \0-terminated strings (object_name
     * and so forth).  The frames contain the pointers to the starts
     * of these strings, and the lengths of these strings. */
} Perl_c_backtrace;

#define Perl_free_c_backtrace(bt) Safefree(bt)

#endif /* USE_C_BACKTRACE */

/* Use a packed 32 bit constant "key" to start the handshake. The key defines
   ABI compatibility, and how to process the vararg list.

   Note, some bits may be taken from INTRPSIZE (but then a simple x86 AX register
   can't be used to read it) and 4 bits from API version len can also be taken,
   since v00.00.00 is 9 bytes long. XS version length should not have any bits
   taken since XS_VERSION lengths can get quite long since they are user
   selectable. These spare bits allow for additional features for the varargs
   stuff or ABI compat test flags in the future.
*/
#define HSm_APIVERLEN 0x0000001F /* perl version string won't be more than 31 chars */
#define HS_APIVERLEN_MAX HSm_APIVERLEN
#define HSm_XSVERLEN 0x0000FF00 /* if 0, not present, dont check, die if over 255*/
#define HS_XSVERLEN_MAX 0xFF
/* uses var file to set default filename for newXS_deffile to use for CvFILE */
#define HSf_SETXSUBFN 0x00000020
#define HSf_POPMARK 0x00000040 /* popmark mode or you must supply ax and items */
#define HSf_IMP_CXT 0x00000080 /* ABI, threaded/PERL_IMPLICIT_CONTEXT, pTHX_ present */
#define HSm_INTRPSIZE 0xFFFF0000 /* ABI, interp struct size */
/* A mask of bits in the key which must always match between a XS mod and interp.
   Also if all ABI bits in a key are true, skip all ABI checks, it is very
   the unlikely interp size will all 1 bits */
/* Maybe HSm_APIVERLEN one day if Perl_xs_apiversion_bootcheck is changed to a memcmp */
#define HSm_KEY_MATCH (HSm_INTRPSIZE|HSf_IMP_CXT)
#define HSf_NOCHK HSm_KEY_MATCH  /* if all ABI bits are 1 in the key, dont chk */


#define HS_GETINTERPSIZE(key) ((key) >> 16)
/* if in the future "" and NULL must be separated, XSVERLEN would be 0
means arg not present, 1 is empty string/null byte */
/* (((key) & 0x0000FF00) >> 8) is less efficient on Visual C */
#define HS_GETXSVERLEN(key) ((key) >> 8 & 0xFF)
#define HS_GETAPIVERLEN(key) ((key) & HSm_APIVERLEN)

/* internal to util.h macro to create a packed handshake key, all args must be constants */
/* U32 return = (U16 interpsize, bool cxt, bool setxsubfn, bool popmark,
   U5 (FIVE!) apiverlen, U8 xsverlen) */
#define HS_KEYp(interpsize, cxt, setxsubfn, popmark, apiverlen, xsverlen) \
    (((interpsize)  << 16) \
    | ((xsverlen) > HS_XSVERLEN_MAX \
        ? (Perl_croak_nocontext("panic: handshake overflow"), HS_XSVERLEN_MAX) \
        : (xsverlen) << 8) \
    | (cBOOL(setxsubfn) ? HSf_SETXSUBFN : 0) \
    | (cBOOL(cxt) ? HSf_IMP_CXT : 0) \
    | (cBOOL(popmark) ? HSf_POPMARK : 0) \
    | ((apiverlen) > HS_APIVERLEN_MAX \
        ? (Perl_croak_nocontext("panic: handshake overflow"), HS_APIVERLEN_MAX) \
        : (apiverlen)))
/* overflows above will optimize away unless they will execute */

/* public macro for core usage to create a packed handshake key but this is
   not public API. This more friendly version already collected all ABI info */
/* U32 return = (bool setxsubfn, bool popmark, "litteral_string_api_ver",
   "litteral_string_xs_ver") */
#ifdef PERL_IMPLICIT_CONTEXT
#  define HS_KEY(setxsubfn, popmark, apiver, xsver) \
    HS_KEYp(sizeof(PerlInterpreter), TRUE, setxsubfn, popmark, \
    sizeof("" apiver "")-1, sizeof("" xsver "")-1)
#  define HS_CXT aTHX
#else
#  define HS_KEY(setxsubfn, popmark, apiver, xsver) \
    HS_KEYp(sizeof(struct PerlHandShakeInterpreter), FALSE, setxsubfn, popmark, \
    sizeof("" apiver "")-1, sizeof("" xsver "")-1)
#  define HS_CXT cv
#endif

/*
=for apidoc instr
Same as L<strstr(3)>, which finds and returns a pointer to the first occurrence
of the NUL-terminated substring C<little> in the NUL-terminated string C<big>,
returning NULL if not found.  The terminating NUL bytes are not compared.

=cut
*/


#define instr(haystack, needle) strstr(haystack, needle)

#ifdef HAS_MEMMEM
#   define ninstr(big, bigend, little, lend)                                \
            ((char *) memmem((big), (bigend) - (big),                       \
                             (little), (lend) - (little)))
#else
#   define ninstr(a,b,c,d) Perl_ninstr(a,b,c,d)
#endif

#ifdef __Lynx__
/* Missing proto on LynxOS */
int mkstemp(char*);
#endif

#ifdef PERL_CORE
#   if defined(VMS)
/* only useful for calls to our mkostemp() emulation */
#       define O_VMS_DELETEONCLOSE 0x40000000
#       ifdef HAS_MKOSTEMP
#           error 134221 will need a new solution for VMS
#       endif
#   else
#       define O_VMS_DELETEONCLOSE 0
#   endif
#endif
#if defined(HAS_MKOSTEMP) && defined(PERL_CORE)
#   define Perl_my_mkostemp(templte, flags) mkostemp(templte, flags)
#endif
#if defined(HAS_MKSTEMP) && defined(PERL_CORE)
#   define Perl_my_mkstemp(templte) mkstemp(templte)
#endif

#endif /* PERL_UTIL_H_ */

/*
 * ex: set ts=8 sts=4 sw=4 et:
 */
Commit	Line	Data
a0d0e21e	1	/* util.h
a687059c	2	*
663f364b NC	3	* Copyright (C) 1991, 1992, 1993, 1999, 2001, 2002, 2003, 2004, 2005,
663f364b NC	4	* 2007, by Larry Wall and others
a687059c	5	*
d48672a2 LW	6	* You may distribute under the terms of either the GNU General Public
d48672a2 LW	7	* License or the Artistic License, as specified in the README file.
8d063cd8	8	*
8d063cd8	9	*/
57843af0	10
28922db9 DM	11	#ifndef PERL_UTIL_H_
	12	#define PERL_UTIL_H_
	13
	14
57843af0 GS	15	#ifdef VMS
	16	# define PERL_FILE_IS_ABSOLUTE(f) \
	17	(*(f) == '/' \
	18	\|\| (strchr(f,':') \
	19	\|\| (((f) == '[' \|\| (f) == '<') \
4aada8b9	20	&& (isWORDCHAR((f)[1]) \|\| memCHRs("$-_]>",(f)[1])))))
57843af0	21
d1f9b933 AC	22	#elif defined(WIN32) \|\| defined(__CYGWIN__)
d1f9b933 AC	23	# define PERL_FILE_IS_ABSOLUTE(f) \
f2ed23b0 GS	24	((f) == '/' \|\| (f) == '\\' /* UNC/rooted path */ \
f2ed23b0 GS	25	\|\| ((f)[0] && (f)[1] == ':')) /* drive name */
d1f9b933 AC	26	#elif defined(NETWARE)
d1f9b933 AC	27	# define PERL_FILE_IS_ABSOLUTE(f) \
2986a63f JH	28	(((f)[0] && (f)[1] == ':') /* drive name */ \
	29	\|\| ((f)[0] == '\\' && (f)[1] == '\\') /* UNC path */ \
	30	\|\| ((f)[3] == ':')) /* volume name, currently only sys */
822c8b4d	31	#elif defined(DOSISH)
d1f9b933	32	# define PERL_FILE_IS_ABSOLUTE(f) \
57843af0 GS	33	(*(f) == '/' \
57843af0 GS	34	\|\| ((f)[0] && (f)[1] == ':')) /* drive name */
822c8b4d	35	#else /* NOT DOSISH */
d1f9b933 AC	36	# define PERL_FILE_IS_ABSOLUTE(f) (*(f) == '/')
d1f9b933 AC	37	#endif
e9a8c099 MHM	38
e9a8c099 MHM	39	/*
dcccc8ff KW	40	=head1 Miscellaneous Functions
dcccc8ff KW	41
e6226b18 KW	42	=for apidoc ibcmp
e6226b18 KW	43
61b16eb9	44	This is a synonym for S<C<(! foldEQ())>>
e6226b18 KW	45
	46	=for apidoc ibcmp_locale
	47
61b16eb9	48	This is a synonym for S<C<(! foldEQ_locale())>>
e6226b18	49
1c4bbd05 KW	50	=for apidoc ibcmp_utf8
	51
	52	This is a synonym for S<C<(! foldEQ_utf8())>>
	53
e6226b18 KW	54	=cut
	55	*/
	56	#define ibcmp(s1, s2, len) cBOOL(! foldEQ(s1, s2, len))
	57	#define ibcmp_locale(s1, s2, len) cBOOL(! foldEQ_locale(s1, s2, len))
1c4bbd05 KW	58	#define ibcmp_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2) \
1c4bbd05 KW	59	cBOOL(! foldEQ_utf8(s1, pe1, l1, u1, s2, pe2, l2, u2))
e6226b18	60
cb4d37a7 NC	61	/* outside the core, perl.h undefs HAS_QUAD if IV isn't 64-bit
	62	We can't swap this to HAS_QUAD, because the logic here affects the type of
	63	perl_drand48_t below, and that is visible outside of the core. */
7adf2470 SH	64	#if defined(U64TYPE)
7adf2470 SH	65	/* use a faster implementation when quads are available */
63835f79	66	# define PERL_DRAND48_QUAD
3be8f094 TC	67	#endif
	68
	69	#ifdef PERL_DRAND48_QUAD
	70
	71	/* U64 is only defined under PERL_CORE, but this needs to be visible
	72	* elsewhere so the definition of PerlInterpreter is complete.
	73	*/
	74	typedef U64TYPE perl_drand48_t;
	75
	76	#else
	77
	78	struct PERL_DRAND48_T {
	79	U16 seed[3];
	80	};
	81
	82	typedef struct PERL_DRAND48_T perl_drand48_t;
	83
	84	#endif
	85
	86	#define PL_RANDOM_STATE_TYPE perl_drand48_t
	87
	88	#define Perl_drand48_init(seed) (Perl_drand48_init_r(&PL_random_state, (seed)))
	89	#define Perl_drand48() (Perl_drand48_r(&PL_random_state))
e6226b18	90
f26b33bd TC	91	#ifdef PERL_CORE
	92	/* uses a different source of randomness to avoid interfering with the results
	93	* of rand() */
	94	#define Perl_internal_drand48() (Perl_drand48_r(&PL_internal_random_state))
	95	#endif
	96
470dd224 JH	97	#ifdef USE_C_BACKTRACE
	98
	99	typedef struct {
	100	/* The number of frames returned. */
	101	UV frame_count;
	102	/* The total size of the Perl_c_backtrace, including this header,
	103	* the frames, and the name strings. */
	104	UV total_bytes;
	105	} Perl_c_backtrace_header;
	106
	107	typedef struct {
	108	void* addr; /* the program counter at this frame */
	109
	110	/* We could use Dl_info (as used by dladdr()) for many of these but
	111	* that would be naughty towards non-dlfcn systems (hi there, Win32). */
	112
	113	void* symbol_addr; /* symbol address (hint: try symbol_addr - addr) */
	114	void* object_base_addr; /* base address of the shared object */
	115
	116	/* The offsets are from the beginning of the whole backtrace,
	117	* which makes the backtrace relocatable. */
	118	STRLEN object_name_offset; /* pathname of the shared object */
	119	STRLEN object_name_size; /* length of the pathname */
	120	STRLEN symbol_name_offset; /* symbol name */
	121	STRLEN symbol_name_size; /* length of the symbol name */
	122	STRLEN source_name_offset; /* source code file name */
	123	STRLEN source_name_size; /* length of the source code file name */
	124	STRLEN source_line_number; /* source code line number */
	125
	126	/* OS X notes: atos(1) (more recently, "xcrun atos"), but the C
	127	* API atos() uses is unknown (private "Symbolicator" framework,
	128	* might require Objective-C even if the API would be known).
	129	* Currently we open read pipe to "xcrun atos" and parse the
	130	* output - quite disgusting. And that won't work if the
	131	* Developer Tools isn't installed. */
	132
0762e42f JH	133	/* FreeBSD notes: execinfo.h exists, but probably would need also
	134	* the library -lexecinfo. BFD exists if the pkg devel/binutils
	135	* has been installed, but there seems to be a known problem that
	136	* the "bfd.h" getting installed refers to "ansidecl.h", which
	137	* doesn't get installed. */
	138
470dd224 JH	139	/* Win32 notes: as moral equivalents of backtrace() + dladdr(),
	140	* one could possibly first use GetCurrentProcess() +
	141	* SymInitialize(), and then CaptureStackBackTrace() +
	142	* SymFromAddr(). */
	143
	144	/* Note that using the compiler optimizer easily leads into much
	145	* of this information, like the symbol names (think inlining),
	146	* and source code locations getting lost or confused. In many
	147	* cases keeping the debug information (-g) is necessary.
	148	*
	149	* Note that for example with gcc you can do both -O and -g.
	150	*
	151	* Note, however, that on some platforms (e.g. OSX + clang (cc))
	152	* backtrace() + dladdr() works fine without -g. */
	153
	154	/* For example: the mere presence of <bfd.h> is no guarantee: e.g.
	155	* OS X has that, but BFD does not seem to work on the OSX executables.
	156	*
	157	* Another niceness would be to able to see something about
	158	* the function arguments, however gdb/lldb manage to do that. */
	159	} Perl_c_backtrace_frame;
	160
	161	typedef struct {
	162	Perl_c_backtrace_header header;
	163	Perl_c_backtrace_frame frame_info[1];
	164	/* After the header come:
	165	* (1) header.frame_count frames
	166	* (2) frame_count times the \0-terminated strings (object_name
	167	* and so forth). The frames contain the pointers to the starts
	168	* of these strings, and the lengths of these strings. */
	169	} Perl_c_backtrace;
	170
	171	#define Perl_free_c_backtrace(bt) Safefree(bt)
	172
	173	#endif /* USE_C_BACKTRACE */
	174
db6e00bd DD	175	/* Use a packed 32 bit constant "key" to start the handshake. The key defines
	176	ABI compatibility, and how to process the vararg list.
	177
	178	Note, some bits may be taken from INTRPSIZE (but then a simple x86 AX register
	179	can't be used to read it) and 4 bits from API version len can also be taken,
	180	since v00.00.00 is 9 bytes long. XS version length should not have any bits
	181	taken since XS_VERSION lengths can get quite long since they are user
	182	selectable. These spare bits allow for additional features for the varargs
	183	stuff or ABI compat test flags in the future.
	184	*/
9a189793	185	#define HSm_APIVERLEN 0x0000001F /* perl version string won't be more than 31 chars */
db6e00bd DD	186	#define HS_APIVERLEN_MAX HSm_APIVERLEN
	187	#define HSm_XSVERLEN 0x0000FF00 /* if 0, not present, dont check, die if over 255*/
	188	#define HS_XSVERLEN_MAX 0xFF
9a189793 DD	189	/* uses var file to set default filename for newXS_deffile to use for CvFILE */
9a189793 DD	190	#define HSf_SETXSUBFN 0x00000020
db6e00bd DD	191	#define HSf_POPMARK 0x00000040 /* popmark mode or you must supply ax and items */
	192	#define HSf_IMP_CXT 0x00000080 /* ABI, threaded/PERL_IMPLICIT_CONTEXT, pTHX_ present */
	193	#define HSm_INTRPSIZE 0xFFFF0000 /* ABI, interp struct size */
9a189793 DD	194	/* A mask of bits in the key which must always match between a XS mod and interp.
	195	Also if all ABI bits in a key are true, skip all ABI checks, it is very
	196	the unlikely interp size will all 1 bits */
	197	/* Maybe HSm_APIVERLEN one day if Perl_xs_apiversion_bootcheck is changed to a memcmp */
db6e00bd	198	#define HSm_KEY_MATCH (HSm_INTRPSIZE\|HSf_IMP_CXT)
9a189793	199	#define HSf_NOCHK HSm_KEY_MATCH /* if all ABI bits are 1 in the key, dont chk */
db6e00bd DD	200
	201
	202	#define HS_GETINTERPSIZE(key) ((key) >> 16)
	203	/* if in the future "" and NULL must be separated, XSVERLEN would be 0
	204	means arg not present, 1 is empty string/null byte */
	205	/* (((key) & 0x0000FF00) >> 8) is less efficient on Visual C */
	206	#define HS_GETXSVERLEN(key) ((key) >> 8 & 0xFF)
	207	#define HS_GETAPIVERLEN(key) ((key) & HSm_APIVERLEN)
	208
	209	/* internal to util.h macro to create a packed handshake key, all args must be constants */
9a189793 DD	210	/* U32 return = (U16 interpsize, bool cxt, bool setxsubfn, bool popmark,
	211	U5 (FIVE!) apiverlen, U8 xsverlen) */
	212	#define HS_KEYp(interpsize, cxt, setxsubfn, popmark, apiverlen, xsverlen) \
db6e00bd DD	213	(((interpsize) << 16) \
	214	\| ((xsverlen) > HS_XSVERLEN_MAX \
	215	? (Perl_croak_nocontext("panic: handshake overflow"), HS_XSVERLEN_MAX) \
	216	: (xsverlen) << 8) \
9a189793	217	\| (cBOOL(setxsubfn) ? HSf_SETXSUBFN : 0) \
db6e00bd DD	218	\| (cBOOL(cxt) ? HSf_IMP_CXT : 0) \
	219	\| (cBOOL(popmark) ? HSf_POPMARK : 0) \
	220	\| ((apiverlen) > HS_APIVERLEN_MAX \
	221	? (Perl_croak_nocontext("panic: handshake overflow"), HS_APIVERLEN_MAX) \
	222	: (apiverlen)))
	223	/* overflows above will optimize away unless they will execute */
	224
	225	/* public macro for core usage to create a packed handshake key but this is
	226	not public API. This more friendly version already collected all ABI info */
9a189793 DD	227	/* U32 return = (bool setxsubfn, bool popmark, "litteral_string_api_ver",
9a189793 DD	228	"litteral_string_xs_ver") */
db6e00bd	229	#ifdef PERL_IMPLICIT_CONTEXT
9a189793 DD	230	# define HS_KEY(setxsubfn, popmark, apiver, xsver) \
9a189793 DD	231	HS_KEYp(sizeof(PerlInterpreter), TRUE, setxsubfn, popmark, \
db6e00bd DD	232	sizeof("" apiver "")-1, sizeof("" xsver "")-1)
	233	# define HS_CXT aTHX
	234	#else
9a189793 DD	235	# define HS_KEY(setxsubfn, popmark, apiver, xsver) \
9a189793 DD	236	HS_KEYp(sizeof(struct PerlHandShakeInterpreter), FALSE, setxsubfn, popmark, \
db6e00bd DD	237	sizeof("" apiver "")-1, sizeof("" xsver "")-1)
	238	# define HS_CXT cv
	239	#endif
	240
fa39cb42 KW	241	/*
	242	=for apidoc instr
	243	Same as L<strstr(3)>, which finds and returns a pointer to the first occurrence
	244	of the NUL-terminated substring C<little> in the NUL-terminated string C<big>,
	245	returning NULL if not found. The terminating NUL bytes are not compared.
	246
	247	=cut
	248	*/
	249
	250
4ee010a8 KW	251	#define instr(haystack, needle) strstr(haystack, needle)
4ee010a8 KW	252
b8070b07 KW	253	#ifdef HAS_MEMMEM
b8070b07 KW	254	# define ninstr(big, bigend, little, lend) \
45d67106 KW	255	((char *) memmem((big), (bigend) - (big), \
45d67106 KW	256	(little), (lend) - (little)))
54c193ae KW	257	#else
54c193ae KW	258	# define ninstr(a,b,c,d) Perl_ninstr(a,b,c,d)
b8070b07 KW	259	#endif
b8070b07 KW	260
d333cbeb Z	261	#ifdef __Lynx__
	262	/* Missing proto on LynxOS */
	263	int mkstemp(char*);
	264	#endif
	265
74b421cc TC	266	#ifdef PERL_CORE
	267	# if defined(VMS)
	268	/* only useful for calls to our mkostemp() emulation */
	269	# define O_VMS_DELETEONCLOSE 0x40000000
	270	# ifdef HAS_MKOSTEMP
	271	# error 134221 will need a new solution for VMS
	272	# endif
	273	# else
	274	# define O_VMS_DELETEONCLOSE 0
	275	# endif
	276	#endif
2517ba99 Z	277	#if defined(HAS_MKOSTEMP) && defined(PERL_CORE)
	278	# define Perl_my_mkostemp(templte, flags) mkostemp(templte, flags)
	279	#endif
e48855bd TC	280	#if defined(HAS_MKSTEMP) && defined(PERL_CORE)
	281	# define Perl_my_mkstemp(templte) mkstemp(templte)
	282	#endif
	283
28922db9 DM	284	#endif /* PERL_UTIL_H_ */
28922db9 DM	285
e6226b18	286	/*
14d04a33	287	* ex: set ts=8 sts=4 sw=4 et:
e9a8c099	288	*/