[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) || defined(__SYMBIAN32__)
#  define PERL_FILE_IS_ABSOLUTE(f) \
	(*(f) == '/'							\
	 || ((f)[0] && (f)[1] == ':'))		/* drive name */
#else	/* NEITHER DOSISH NOR SYMBIANISH */
#  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())>>

=cut
*/
#define ibcmp(s1, s2, len)         cBOOL(! foldEQ(s1, s2, len))
#define ibcmp_locale(s1, s2, len)  cBOOL(! foldEQ_locale(s1, s2, len))

/* 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 */
d1f9b933 AC	31	#elif defined(DOSISH) \|\| defined(__SYMBIAN32__)
d1f9b933 AC	32	# define PERL_FILE_IS_ABSOLUTE(f) \
57843af0 GS	33	(*(f) == '/' \
57843af0 GS	34	\|\| ((f)[0] && (f)[1] == ':')) /* drive name */
d1f9b933 AC	35	#else /* NEITHER DOSISH NOR SYMBIANISH */
	36	# define PERL_FILE_IS_ABSOLUTE(f) (*(f) == '/')
	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 KW	49
	50	=cut
	51	*/
	52	#define ibcmp(s1, s2, len) cBOOL(! foldEQ(s1, s2, len))
	53	#define ibcmp_locale(s1, s2, len) cBOOL(! foldEQ_locale(s1, s2, len))
	54
cb4d37a7 NC	55	/* outside the core, perl.h undefs HAS_QUAD if IV isn't 64-bit
	56	We can't swap this to HAS_QUAD, because the logic here affects the type of
	57	perl_drand48_t below, and that is visible outside of the core. */
7adf2470 SH	58	#if defined(U64TYPE)
7adf2470 SH	59	/* use a faster implementation when quads are available */
63835f79	60	# define PERL_DRAND48_QUAD
3be8f094 TC	61	#endif
	62
	63	#ifdef PERL_DRAND48_QUAD
	64
	65	/* U64 is only defined under PERL_CORE, but this needs to be visible
	66	* elsewhere so the definition of PerlInterpreter is complete.
	67	*/
	68	typedef U64TYPE perl_drand48_t;
	69
	70	#else
	71
	72	struct PERL_DRAND48_T {
	73	U16 seed[3];
	74	};
	75
	76	typedef struct PERL_DRAND48_T perl_drand48_t;
	77
	78	#endif
	79
	80	#define PL_RANDOM_STATE_TYPE perl_drand48_t
	81
	82	#define Perl_drand48_init(seed) (Perl_drand48_init_r(&PL_random_state, (seed)))
	83	#define Perl_drand48() (Perl_drand48_r(&PL_random_state))
e6226b18	84
f26b33bd TC	85	#ifdef PERL_CORE
	86	/* uses a different source of randomness to avoid interfering with the results
	87	* of rand() */
	88	#define Perl_internal_drand48() (Perl_drand48_r(&PL_internal_random_state))
	89	#endif
	90
470dd224 JH	91	#ifdef USE_C_BACKTRACE
	92
	93	typedef struct {
	94	/* The number of frames returned. */
	95	UV frame_count;
	96	/* The total size of the Perl_c_backtrace, including this header,
	97	* the frames, and the name strings. */
	98	UV total_bytes;
	99	} Perl_c_backtrace_header;
	100
	101	typedef struct {
	102	void* addr; /* the program counter at this frame */
	103
	104	/* We could use Dl_info (as used by dladdr()) for many of these but
	105	* that would be naughty towards non-dlfcn systems (hi there, Win32). */
	106
	107	void* symbol_addr; /* symbol address (hint: try symbol_addr - addr) */
	108	void* object_base_addr; /* base address of the shared object */
	109
	110	/* The offsets are from the beginning of the whole backtrace,
	111	* which makes the backtrace relocatable. */
	112	STRLEN object_name_offset; /* pathname of the shared object */
	113	STRLEN object_name_size; /* length of the pathname */
	114	STRLEN symbol_name_offset; /* symbol name */
	115	STRLEN symbol_name_size; /* length of the symbol name */
	116	STRLEN source_name_offset; /* source code file name */
	117	STRLEN source_name_size; /* length of the source code file name */
	118	STRLEN source_line_number; /* source code line number */
	119
	120	/* OS X notes: atos(1) (more recently, "xcrun atos"), but the C
	121	* API atos() uses is unknown (private "Symbolicator" framework,
	122	* might require Objective-C even if the API would be known).
	123	* Currently we open read pipe to "xcrun atos" and parse the
	124	* output - quite disgusting. And that won't work if the
	125	* Developer Tools isn't installed. */
	126
0762e42f JH	127	/* FreeBSD notes: execinfo.h exists, but probably would need also
	128	* the library -lexecinfo. BFD exists if the pkg devel/binutils
	129	* has been installed, but there seems to be a known problem that
	130	* the "bfd.h" getting installed refers to "ansidecl.h", which
	131	* doesn't get installed. */
	132
470dd224 JH	133	/* Win32 notes: as moral equivalents of backtrace() + dladdr(),
	134	* one could possibly first use GetCurrentProcess() +
	135	* SymInitialize(), and then CaptureStackBackTrace() +
	136	* SymFromAddr(). */
	137
	138	/* Note that using the compiler optimizer easily leads into much
	139	* of this information, like the symbol names (think inlining),
	140	* and source code locations getting lost or confused. In many
	141	* cases keeping the debug information (-g) is necessary.
	142	*
	143	* Note that for example with gcc you can do both -O and -g.
	144	*
	145	* Note, however, that on some platforms (e.g. OSX + clang (cc))
	146	* backtrace() + dladdr() works fine without -g. */
	147
	148	/* For example: the mere presence of <bfd.h> is no guarantee: e.g.
	149	* OS X has that, but BFD does not seem to work on the OSX executables.
	150	*
	151	* Another niceness would be to able to see something about
	152	* the function arguments, however gdb/lldb manage to do that. */
	153	} Perl_c_backtrace_frame;
	154
	155	typedef struct {
	156	Perl_c_backtrace_header header;
	157	Perl_c_backtrace_frame frame_info[1];
	158	/* After the header come:
	159	* (1) header.frame_count frames
	160	* (2) frame_count times the \0-terminated strings (object_name
	161	* and so forth). The frames contain the pointers to the starts
	162	* of these strings, and the lengths of these strings. */
	163	} Perl_c_backtrace;
	164
	165	#define Perl_free_c_backtrace(bt) Safefree(bt)
	166
	167	#endif /* USE_C_BACKTRACE */
	168
db6e00bd DD	169	/* Use a packed 32 bit constant "key" to start the handshake. The key defines
	170	ABI compatibility, and how to process the vararg list.
	171
	172	Note, some bits may be taken from INTRPSIZE (but then a simple x86 AX register
	173	can't be used to read it) and 4 bits from API version len can also be taken,
	174	since v00.00.00 is 9 bytes long. XS version length should not have any bits
	175	taken since XS_VERSION lengths can get quite long since they are user
	176	selectable. These spare bits allow for additional features for the varargs
	177	stuff or ABI compat test flags in the future.
	178	*/
9a189793	179	#define HSm_APIVERLEN 0x0000001F /* perl version string won't be more than 31 chars */
db6e00bd DD	180	#define HS_APIVERLEN_MAX HSm_APIVERLEN
	181	#define HSm_XSVERLEN 0x0000FF00 /* if 0, not present, dont check, die if over 255*/
	182	#define HS_XSVERLEN_MAX 0xFF
9a189793 DD	183	/* uses var file to set default filename for newXS_deffile to use for CvFILE */
9a189793 DD	184	#define HSf_SETXSUBFN 0x00000020
db6e00bd DD	185	#define HSf_POPMARK 0x00000040 /* popmark mode or you must supply ax and items */
	186	#define HSf_IMP_CXT 0x00000080 /* ABI, threaded/PERL_IMPLICIT_CONTEXT, pTHX_ present */
	187	#define HSm_INTRPSIZE 0xFFFF0000 /* ABI, interp struct size */
9a189793 DD	188	/* A mask of bits in the key which must always match between a XS mod and interp.
	189	Also if all ABI bits in a key are true, skip all ABI checks, it is very
	190	the unlikely interp size will all 1 bits */
	191	/* Maybe HSm_APIVERLEN one day if Perl_xs_apiversion_bootcheck is changed to a memcmp */
db6e00bd	192	#define HSm_KEY_MATCH (HSm_INTRPSIZE\|HSf_IMP_CXT)
9a189793	193	#define HSf_NOCHK HSm_KEY_MATCH /* if all ABI bits are 1 in the key, dont chk */
db6e00bd DD	194
	195
	196	#define HS_GETINTERPSIZE(key) ((key) >> 16)
	197	/* if in the future "" and NULL must be separated, XSVERLEN would be 0
	198	means arg not present, 1 is empty string/null byte */
	199	/* (((key) & 0x0000FF00) >> 8) is less efficient on Visual C */
	200	#define HS_GETXSVERLEN(key) ((key) >> 8 & 0xFF)
	201	#define HS_GETAPIVERLEN(key) ((key) & HSm_APIVERLEN)
	202
	203	/* internal to util.h macro to create a packed handshake key, all args must be constants */
9a189793 DD	204	/* U32 return = (U16 interpsize, bool cxt, bool setxsubfn, bool popmark,
	205	U5 (FIVE!) apiverlen, U8 xsverlen) */
	206	#define HS_KEYp(interpsize, cxt, setxsubfn, popmark, apiverlen, xsverlen) \
db6e00bd DD	207	(((interpsize) << 16) \
	208	\| ((xsverlen) > HS_XSVERLEN_MAX \
	209	? (Perl_croak_nocontext("panic: handshake overflow"), HS_XSVERLEN_MAX) \
	210	: (xsverlen) << 8) \
9a189793	211	\| (cBOOL(setxsubfn) ? HSf_SETXSUBFN : 0) \
db6e00bd DD	212	\| (cBOOL(cxt) ? HSf_IMP_CXT : 0) \
	213	\| (cBOOL(popmark) ? HSf_POPMARK : 0) \
	214	\| ((apiverlen) > HS_APIVERLEN_MAX \
	215	? (Perl_croak_nocontext("panic: handshake overflow"), HS_APIVERLEN_MAX) \
	216	: (apiverlen)))
	217	/* overflows above will optimize away unless they will execute */
	218
	219	/* public macro for core usage to create a packed handshake key but this is
	220	not public API. This more friendly version already collected all ABI info */
9a189793 DD	221	/* U32 return = (bool setxsubfn, bool popmark, "litteral_string_api_ver",
9a189793 DD	222	"litteral_string_xs_ver") */
db6e00bd	223	#ifdef PERL_IMPLICIT_CONTEXT
9a189793 DD	224	# define HS_KEY(setxsubfn, popmark, apiver, xsver) \
9a189793 DD	225	HS_KEYp(sizeof(PerlInterpreter), TRUE, setxsubfn, popmark, \
db6e00bd DD	226	sizeof("" apiver "")-1, sizeof("" xsver "")-1)
	227	# define HS_CXT aTHX
	228	#else
9a189793 DD	229	# define HS_KEY(setxsubfn, popmark, apiver, xsver) \
9a189793 DD	230	HS_KEYp(sizeof(struct PerlHandShakeInterpreter), FALSE, setxsubfn, popmark, \
db6e00bd DD	231	sizeof("" apiver "")-1, sizeof("" xsver "")-1)
	232	# define HS_CXT cv
	233	#endif
	234
fa39cb42 KW	235	/*
	236	=for apidoc instr
	237	Same as L<strstr(3)>, which finds and returns a pointer to the first occurrence
	238	of the NUL-terminated substring C<little> in the NUL-terminated string C<big>,
	239	returning NULL if not found. The terminating NUL bytes are not compared.
	240
	241	=cut
	242	*/
	243
	244
4ee010a8 KW	245	#define instr(haystack, needle) strstr(haystack, needle)
4ee010a8 KW	246
b8070b07 KW	247	#ifdef HAS_MEMMEM
b8070b07 KW	248	# define ninstr(big, bigend, little, lend) \
45d67106 KW	249	((char *) memmem((big), (bigend) - (big), \
45d67106 KW	250	(little), (lend) - (little)))
54c193ae KW	251	#else
54c193ae KW	252	# define ninstr(a,b,c,d) Perl_ninstr(a,b,c,d)
b8070b07 KW	253	#endif
b8070b07 KW	254
d333cbeb Z	255	#ifdef __Lynx__
	256	/* Missing proto on LynxOS */
	257	int mkstemp(char*);
	258	#endif
	259
74b421cc TC	260	#ifdef PERL_CORE
	261	# if defined(VMS)
	262	/* only useful for calls to our mkostemp() emulation */
	263	# define O_VMS_DELETEONCLOSE 0x40000000
	264	# ifdef HAS_MKOSTEMP
	265	# error 134221 will need a new solution for VMS
	266	# endif
	267	# else
	268	# define O_VMS_DELETEONCLOSE 0
	269	# endif
	270	#endif
2517ba99 Z	271	#if defined(HAS_MKOSTEMP) && defined(PERL_CORE)
	272	# define Perl_my_mkostemp(templte, flags) mkostemp(templte, flags)
	273	#endif
e48855bd TC	274	#if defined(HAS_MKSTEMP) && defined(PERL_CORE)
	275	# define Perl_my_mkstemp(templte) mkstemp(templte)
	276	#endif
	277
28922db9 DM	278	#endif /* PERL_UTIL_H_ */
28922db9 DM	279
e6226b18	280	/*
14d04a33	281	* ex: set ts=8 sts=4 sw=4 et:
e9a8c099	282	*/