dTHX;
#endif
Malloc_t ptr;
+ dSAVEDERRNO;
#ifdef USE_MDH
if (size + PERL_MEMORY_DEBUG_HEADER_SIZE < size)
Perl_croak_nocontext("panic: malloc, size=%" UVuf, (UV) size);
#endif
if (!size) size = 1; /* malloc(0) is NASTY on our system */
+ SAVE_ERRNO;
#ifdef PERL_DEBUG_READONLY_COW
if ((ptr = mmap(0, size, PROT_READ|PROT_WRITE,
MAP_ANON|MAP_PRIVATE, -1, 0)) == MAP_FAILED) {
abort();
}
#else
- ptr = (Malloc_t)PerlMem_malloc(size?size:1);
+ ptr = (Malloc_t)PerlMem_malloc(size);
#endif
PERL_ALLOC_CHECK(ptr);
if (ptr != NULL) {
ptr = (Malloc_t)((char*)ptr+PERL_MEMORY_DEBUG_HEADER_SIZE);
DEBUG_m(PerlIO_printf(Perl_debug_log, "0x%" UVxf ": (%05ld) malloc %ld bytes\n",PTR2UV(ptr),(long)PL_an++,(long)size));
+ /* malloc() can modify errno() even on success, but since someone
+ writing perl code doesn't have any control over when perl calls
+ malloc() we need to hide that.
+ */
+ RESTORE_ERRNO;
}
else {
#ifdef USE_MDH
ptr = safesysmalloc(size);
}
else {
+ dSAVE_ERRNO;
#ifdef USE_MDH
where = (Malloc_t)((char*)where-PERL_MEMORY_DEBUG_HEADER_SIZE);
if (size + PERL_MEMORY_DEBUG_HEADER_SIZE < size)
maybe_protect_ro(header->prev);
#endif
ptr = (Malloc_t)((char*)ptr+PERL_MEMORY_DEBUG_HEADER_SIZE);
+
+ /* realloc() can modify errno() even on success, but since someone
+ writing perl code doesn't have any control over when perl calls
+ realloc() we need to hide that.
+ */
+ RESTORE_ERRNO;
}
/* In particular, must do that fixup above before logging anything via
return (char *)from;
}
-char *
-Perl_delimcpy(char *to, const char *toend, const char *from, const char *fromend, int delim, I32 *retlen)
-{
- PERL_ARGS_ASSERT_DELIMCPY;
- return S_delimcpy_intern(to, toend, from, fromend, delim, retlen, 1);
-}
+/*
+=for apidoc delimcpy_no_escape
+
+Copy a source buffer to a destination buffer, stopping at (but not including)
+the first occurrence of the delimiter byte C<delim>, in the source. The source
+is the bytes between C<from> and C<fromend> inclusive. The dest is C<to>
+through C<toend>.
+
+Nothing is copied beyond what fits between C<to> through C<toend>. If C<delim>
+doesn't occur in the source buffer, as much of the source as will fit is copied
+to the destination.
+The actual number of bytes copied is written to C<*retlen>.
+
+If there is room in the destination available after the copy, an extra
+terminating safety NUL byte is written (not included in the returned length).
+
+=cut
+*/
char *
Perl_delimcpy_no_escape(char *to, const char *toend, const char *from,
const char *fromend, int delim, I32 *retlen)
{
+ const char * delim_pos;
+ Ptrdiff_t to_len = toend - to;
+
+ /* Only use the minimum of the available source/dest */
+ Ptrdiff_t copy_len = MIN(fromend - from, to_len);
+
PERL_ARGS_ASSERT_DELIMCPY_NO_ESCAPE;
- return S_delimcpy_intern(to, toend, from, fromend, delim, retlen, 0);
+ assert(copy_len >= 0);
+
+ /* Look for the first delimiter in the portion of the source we are allowed
+ * to look at (determined by the input bounds). */
+ delim_pos = (const char *) memchr(from, delim, copy_len);
+ if (delim_pos) {
+ copy_len = delim_pos - from;
+ } /* else didn't find it: copy all of the source permitted */
+
+ Copy(from, to, copy_len, char);
+
+ if (retlen) {
+ *retlen = copy_len;
+ }
+
+ /* If there is extra space available, add a trailing NUL */
+ if (copy_len < to_len) {
+ to[copy_len] = '\0';
+ }
+
+ return (char *) from + copy_len;
+}
+
+char *
+Perl_delimcpy(char *to, const char *toend, const char *from, const char *fromend, int delim, I32 *retlen)
+{
+ PERL_ARGS_ASSERT_DELIMCPY;
+
+ return S_delimcpy_intern(to, toend, from, fromend, delim, retlen, 1);
}
/*
=head1 Miscellaneous Functions
-=for apidoc Am|char *|ninstr|char * big|char * bigend|char * little|char * little_end
+=for apidoc ninstr
Find the first (leftmost) occurrence of a sequence of bytes within another
sequence. This is the Perl version of C<strstr()>, extended to handle
return ninstr(big, bigend, little, lend);
#else
- if (little >= lend)
- return (char*)big;
- {
- const char first = *little;
- bigend -= lend - little++;
- OUTER:
+ if (little >= lend) {
+ return (char*) big;
+ }
+ else {
+ const U8 first = *little;
+ Size_t lsize;
+
+ /* No match can start closer to the end of the haystack than the length
+ * of the needle. */
+ bigend -= lend - little;
+ little++; /* Look for 'first', then the remainder is in here */
+ lsize = lend - little;
+
while (big <= bigend) {
- if (*big++ == first) {
- const char *s, *x;
- for (x=big,s=little; s < lend; x++,s++) {
- if (*s != *x)
- goto OUTER;
- }
- return (char*)(big-1);
+ big = (char *) memchr((U8 *) big, first, bigend - big + 1);
+ if (big == NULL || big > bigend) {
+ return NULL;
}
+
+ if (memEQ(big + 1, little, lsize)) {
+ return (char*) big;
+ }
+ big++;
}
}
+
return NULL;
#endif
/*
=head1 Miscellaneous Functions
-=for apidoc Am|char *|rninstr|char * big|char * bigend|char * little|char * little_end
+=for apidoc rninstr
Like C<L</ninstr>>, but instead finds the final (rightmost) occurrence of a
sequence of bytes within another sequence, returning C<NULL> if there is no
char *
Perl_rninstr(const char *big, const char *bigend, const char *little, const char *lend)
{
- const char *bigbeg;
- const I32 first = *little;
- const char * const littleend = lend;
+ const Ptrdiff_t little_len = lend - little;
+ const Ptrdiff_t big_len = bigend - big;
PERL_ARGS_ASSERT_RNINSTR;
- if (little >= littleend)
+ /* A non-existent needle trivially matches the rightmost possible position
+ * in the haystack */
+ if (UNLIKELY(little_len <= 0)) {
return (char*)bigend;
- bigbeg = big;
- big = bigend - (littleend - little++);
- while (big >= bigbeg) {
- const char *s, *x;
- if (*big-- != first)
- continue;
- for (x=big+2,s=little; s < littleend; /**/ ) {
- if (*s != *x)
- break;
- else {
- x++;
- s++;
- }
- }
- if (s >= littleend)
- return (char*)(big+1);
}
- return NULL;
+
+ /* If the needle is larger than the haystack, the needle can't possibly fit
+ * inside the haystack. */
+ if (UNLIKELY(little_len > big_len)) {
+ return NULL;
+ }
+
+ /* Special case length 1 needles. It's trivial if we have memrchr();
+ * and otherwise we just do a per-byte search backwards.
+ *
+ * XXX When we don't have memrchr, we could use something like
+ * S_find_next_masked( or S_find_span_end() to do per-word searches */
+ if (little_len == 1) {
+ const char final = *little;
+
+#ifdef HAS_MEMRCHR
+
+ return (char *) memrchr(big, final, big_len);
+#else
+ const char * cur = bigend - 1;
+
+ do {
+ if (*cur == final) {
+ return (char *) cur;
+ }
+ } while (--cur >= big);
+
+ return NULL;
+#endif
+
+ }
+ else { /* Below, the needle is longer than a single byte */
+
+ /* We search backwards in the haystack for the final character of the
+ * needle. Each time one is found, we see if the characters just
+ * before it in the haystack match the rest of the needle. */
+ const char final = *(lend - 1);
+
+ /* What matches consists of 'little_len'-1 characters, then the final
+ * one */
+ const Size_t prefix_len = little_len - 1;
+
+ /* If the final character in the needle is any closer than this to the
+ * left edge, there wouldn't be enough room for all of it to fit in the
+ * haystack */
+ const char * const left_fence = big + prefix_len;
+
+ /* Start at the right edge */
+ char * cur = (char *) bigend;
+
+ /* memrchr() makes the search easy (and fast); otherwise, look
+ * backwards byte-by-byte. */
+ do {
+
+#ifdef HAS_MEMRCHR
+
+ cur = (char *) memrchr(left_fence, final, cur - left_fence);
+ if (cur == NULL) {
+ return NULL;
+ }
+#else
+ do {
+ cur--;
+ if (cur < left_fence) {
+ return NULL;
+ }
+ }
+ while (*cur != final);
+#endif
+
+ /* Here, we know that *cur is 'final'; see if the preceding bytes
+ * of the needle also match the corresponding haystack bytes */
+ if memEQ(cur - prefix_len, little, prefix_len) {
+ return cur - prefix_len;
+ }
+ } while (cur > left_fence);
+
+ return NULL;
+ }
}
/* As a space optimization, we do not compile tables for strings of length
const U8 *s;
STRLEN i;
STRLEN len;
- U32 frequency = 256;
MAGIC *mg;
- PERL_DEB( STRLEN rarest = 0 );
PERL_ARGS_ASSERT_FBM_COMPILE;
}
}
- s = (const unsigned char*)(SvPVX_const(sv)); /* deeper magic */
- for (i = 0; i < len; i++) {
- if (PL_freq[s[i]] < frequency) {
- PERL_DEB( rarest = i );
- frequency = PL_freq[s[i]];
- }
- }
BmUSEFUL(sv) = 100; /* Initial value */
((XPVNV*)SvANY(sv))->xnv_u.xnv_bm_tail = cBOOL(flags & FBMcf_TAIL);
- DEBUG_r(PerlIO_printf(Perl_debug_log, "rarest char %c at %" UVuf "\n",
- s[rarest], (UV)rarest));
}
=cut
-If SvTAIL(littlestr) is true, a fake "\n" was appended to to the string
+If SvTAIL(littlestr) is true, a fake "\n" was appended to the string
during FBM compilation due to FBMcf_TAIL in flags. It indicates that
the littlestr must be anchored to the end of bigstr (or to any \n if
FBMrf_MULTILINE).
}
}
+const char *
+Perl_cntrl_to_mnemonic(const U8 c)
+{
+ /* Returns the mnemonic string that represents character 'c', if one
+ * exists; NULL otherwise. The only ones that exist for the purposes of
+ * this routine are a few control characters */
+
+ switch (c) {
+ case '\a': return "\\a";
+ case '\b': return "\\b";
+ case ESC_NATIVE: return "\\e";
+ case '\f': return "\\f";
+ case '\n': return "\\n";
+ case '\r': return "\\r";
+ case '\t': return "\\t";
+ }
+
+ return NULL;
+}
+
/* copy a string to a safe spot */
/*
Perl's version of C<strdup()>. Returns a pointer to a newly allocated
string which is a duplicate of C<pv>. The size of the string is
determined by C<strlen()>, which means it may not contain embedded C<NUL>
-characters and must have a trailing C<NUL>. The memory allocated for the new
-string can be freed with the C<Safefree()> function.
+characters and must have a trailing C<NUL>. To prevent memory leaks, the
+memory allocated for the new string needs to be freed when no longer needed.
+This can be done with the C<L</Safefree>> function, or
+L<C<SAVEFREEPV>|perlguts/SAVEFREEPV(p)>.
On some platforms, Windows for example, all allocated memory owned by a thread
is deallocated when that thread ends. So if you need that not to happen, you
*/
char *
-Perl_savepvn(pTHX_ const char *pv, I32 len)
+Perl_savepvn(pTHX_ const char *pv, Size_t len)
{
char *newaddr;
PERL_UNUSED_CONTEXT;
- assert(len >= 0);
-
Newx(newaddr,len+1,char);
/* Give a meaning to NULL pointer mainly for the use in sv_magic() */
if (pv) {
must explicitly copy the earlier strings away (and free the copies when you
are done).
+=for apidoc form_nocontext
+Like C<L</form>> but does not take a thread context (C<aTHX>) parameter,
+so is used in situations where the caller doesn't already have the thread
+context.
+
=cut
*/
}
/*
-=for apidoc Am|SV *|mess|const char *pat|...
+=for apidoc mess
Take a sprintf-style format pattern and argument list. These are used to
generate a string message. If the message does not end with a newline,
During global destruction a single SV may be shared between uses of
this function.
+=for apidoc mess_nocontext
+Like C<L</mess>> but does not take a thread context (C<aTHX>) parameter,
+so is used in situations where the caller doesn't already have the thread
+context.
+
=cut
*/
}
/*
-=for apidoc Am|SV *|mess_sv|SV *basemsg|bool consume
+=for apidoc mess_sv
Expands a message, intended for the user, to include an indication of
the current location in the code, if the message does not already appear
}
/*
-=for apidoc Am|SV *|vmess|const char *pat|va_list *args
+=for apidoc vmess
C<pat> and C<args> are a sprintf-style format pattern and encapsulated
argument list, respectively. These are used to generate a string message. If
STATIC bool
S_invoke_exception_hook(pTHX_ SV *ex, bool warn)
{
- dVAR;
HV *stash;
GV *gv;
CV *cv;
}
/*
-=for apidoc Am|OP *|die_sv|SV *baseex
+=for apidoc die_sv
Behaves the same as L</croak_sv>, except for the return type.
It should be used only where the C<OP *> return type is required.
The function never actually returns.
+=for apidoc die_nocontext
+Like C<L</die>> but does not take a thread context (C<aTHX>) parameter,
+so is used in situations where the caller doesn't already have the thread
+context.
+
=cut
*/
-#ifdef _MSC_VER
-# pragma warning( push )
-# pragma warning( disable : 4646 ) /* warning C4646: function declared with
- __declspec(noreturn) has non-void return type */
-# pragma warning( disable : 4645 ) /* warning C4645: function declared with
-__declspec(noreturn) has a return statement */
-#endif
+/* silence __declspec(noreturn) warnings */
+MSVC_DIAG_IGNORE(4646 4645)
OP *
Perl_die_sv(pTHX_ SV *baseex)
{
/* NOTREACHED */
NORETURN_FUNCTION_END;
}
-#ifdef _MSC_VER
-# pragma warning( pop )
-#endif
+MSVC_DIAG_RESTORE
/*
-=for apidoc Am|OP *|die|const char *pat|...
+=for apidoc die
Behaves the same as L</croak>, except for the return type.
It should be used only where the C<OP *> return type is required.
*/
#if defined(PERL_IMPLICIT_CONTEXT)
-#ifdef _MSC_VER
-# pragma warning( push )
-# pragma warning( disable : 4646 ) /* warning C4646: function declared with
- __declspec(noreturn) has non-void return type */
-# pragma warning( disable : 4645 ) /* warning C4645: function declared with
-__declspec(noreturn) has a return statement */
-#endif
+
+/* silence __declspec(noreturn) warnings */
+MSVC_DIAG_IGNORE(4646 4645)
OP *
Perl_die_nocontext(const char* pat, ...)
{
va_end(args);
NORETURN_FUNCTION_END;
}
-#ifdef _MSC_VER
-# pragma warning( pop )
-#endif
+MSVC_DIAG_RESTORE
+
#endif /* PERL_IMPLICIT_CONTEXT */
-#ifdef _MSC_VER
-# pragma warning( push )
-# pragma warning( disable : 4646 ) /* warning C4646: function declared with
- __declspec(noreturn) has non-void return type */
-# pragma warning( disable : 4645 ) /* warning C4645: function declared with
-__declspec(noreturn) has a return statement */
-#endif
+/* silence __declspec(noreturn) warnings */
+MSVC_DIAG_IGNORE(4646 4645)
OP *
Perl_die(pTHX_ const char* pat, ...)
{
va_end(args);
NORETURN_FUNCTION_END;
}
-#ifdef _MSC_VER
-# pragma warning( pop )
-#endif
+MSVC_DIAG_RESTORE
/*
-=for apidoc Am|void|croak_sv|SV *baseex
+=for apidoc croak_sv
This is an XS interface to Perl's C<die> function.
}
/*
-=for apidoc Am|void|vcroak|const char *pat|va_list *args
+=for apidoc vcroak
This is an XS interface to Perl's C<die> function.
or build an error message in an SV yourself, it is preferable to use
the L</croak_sv> function, which does not involve clobbering C<ERRSV>.
+=for apidoc croak_nocontext
+Like C<L</croak>> but does not take a thread context (C<aTHX>) parameter,
+so is used in situations where the caller doesn't already have the thread
+context.
+
=cut
*/
}
/*
-=for apidoc Am|void|croak|const char *pat|...
+=for apidoc croak
This is an XS interface to Perl's C<die> function.
}
#endif /* PERL_IMPLICIT_CONTEXT */
+/* saves machine code for a common noreturn idiom typically used in Newx*() */
+GCC_DIAG_IGNORE_DECL(-Wunused-function);
+void
+Perl_croak_memory_wrap(void)
+{
+ Perl_croak_nocontext("%s",PL_memory_wrap);
+}
+GCC_DIAG_RESTORE_DECL;
+
void
Perl_croak(pTHX_ const char *pat, ...)
{
}
/*
-=for apidoc Am|void|croak_no_modify
+=for apidoc croak_no_modify
Exactly equivalent to C<Perl_croak(aTHX_ "%s", PL_no_modify)>, but generates
terser object code than using C<Perl_croak>. Less code used on exception code
}
/*
-=for apidoc Am|void|warn_sv|SV *baseex
+=for apidoc warn_sv
This is an XS interface to Perl's C<warn> function.
}
/*
-=for apidoc Am|void|vwarn|const char *pat|va_list *args
+=for apidoc vwarn
This is an XS interface to Perl's C<warn> function.
-C<pat> and C<args> are a sprintf-style format pattern and encapsulated
-argument list. These are used to generate a string message. If the
-message does not end with a newline, then it will be extended with
-some indication of the current location in the code, as described for
-L</mess_sv>.
-
-The error message or object will by default be written to standard error,
-but this is subject to modification by a C<$SIG{__WARN__}> handler.
+This is like C<L</warn>>, but C<args> are an encapsulated
+argument list.
Unlike with L</vcroak>, C<pat> is not permitted to be null.
}
/*
-=for apidoc Am|void|warn|const char *pat|...
+=for apidoc warn
This is an XS interface to Perl's C<warn> function.
Unlike with L</croak>, C<pat> is not permitted to be null.
+=for apidoc warn_nocontext
+Like C<L</warn>> but does not take a thread context (C<aTHX>) parameter,
+so is used in situations where the caller doesn't already have the thread
+context.
+
=cut
*/
void
Perl_vwarner(pTHX_ U32 err, const char* pat, va_list* args)
{
- dVAR;
PERL_ARGS_ASSERT_VWARNER;
if (
(PL_warnhook == PERL_WARNHOOK_FATAL || ckDEAD(err)) &&
* For Solaris, setenv() and unsetenv() were introduced in Solaris 9, so
* testing for HAS UNSETENV is sufficient.
*/
-# if defined(__CYGWIN__)|| defined(__SYMBIAN32__) || defined(__riscos__) || (defined(__sun) && defined(HAS_UNSETENV)) || defined(PERL_DARWIN)
+# if defined(__CYGWIN__)|| defined(__riscos__) || (defined(__sun) && defined(HAS_UNSETENV)) || defined(PERL_DARWIN)
# define MY_HAS_SETENV
# endif
# if !defined(WIN32) && !defined(NETWARE)
+/*
+=for apidoc my_setenv
+
+A wrapper for the C library L<setenv(3)>. Don't use the latter, as the perl
+version has desirable safeguards
+
+=cut
+*/
+
void
Perl_my_setenv(pTHX_ const char *nam, const char *val)
{
- dVAR;
# ifdef __amigaos4__
amigaos4_obtain_environ(__FUNCTION__);
# endif
# ifdef USE_ITHREADS
- /* only parent thread can modify process environment */
+ /* only parent thread can modify process environment, so no need to use a
+ * mutex */
if (PL_curinterp == aTHX)
# endif
{
void
Perl_my_setenv(pTHX_ const char *nam, const char *val)
{
- dVAR;
char *envstr;
const Size_t nlen = strlen(nam);
Size_t vlen;
envstr = S_env_alloc(NULL, nlen, vlen, 2, 1);
my_setenv_format(envstr, nam, nlen, val, vlen);
(void)PerlEnv_putenv(envstr);
- Safefree(envstr);
+ safesysfree(envstr);
}
# endif /* WIN32 || NETWARE */
/* If we managed to get status pipe check for exec fail */
if (did_pipes && pid > 0) {
int errkid;
- unsigned n = 0;
+ unsigned read_total = 0;
- while (n < sizeof(int)) {
+ while (read_total < sizeof(int)) {
const SSize_t n1 = PerlLIO_read(pp[0],
- (void*)(((char*)&errkid)+n),
- (sizeof(int)) - n);
+ (void*)(((char*)&errkid)+read_total),
+ (sizeof(int)) - read_total);
if (n1 <= 0)
break;
- n += n1;
+ read_total += n1;
}
PerlLIO_close(pp[0]);
did_pipes = 0;
- if (n) { /* Error */
+ if (read_total) { /* Error */
int pid2, status;
PerlLIO_close(p[This]);
- if (n != sizeof(int))
- Perl_croak(aTHX_ "panic: kid popen errno read, n=%u", n);
+ if (read_total != sizeof(int))
+ Perl_croak(aTHX_ "panic: kid popen errno read, n=%u", read_total);
do {
pid2 = wait4pid(pid, &status, 0);
} while (pid2 == -1 && errno == EINTR);
#endif
{
#if defined(USE_ITHREADS)
- dVAR;
/* locks must be held in locking order (if any) */
# ifdef USE_PERLIO
MUTEX_LOCK(&PL_perlio_mutex);
#endif
{
#if defined(USE_ITHREADS)
- dVAR;
/* locks must be released in same order as in atfork_lock() */
# ifdef USE_PERLIO
MUTEX_UNLOCK(&PL_perlio_mutex);
#ifndef PERL_MICRO
#ifdef HAS_SIGACTION
+/*
+=for apidoc rsignal
+
+A wrapper for the C library L<signal(2)>. Don't use the latter, as the Perl
+version knows things that interact with the rest of the perl interpreter.
+
+=cut
+*/
+
Sighandler_t
Perl_rsignal(pTHX_ int signo, Sighandler_t handler)
{
struct sigaction act, oact;
#ifdef USE_ITHREADS
- dVAR;
/* only "parent" interpreter can diddle signals */
if (PL_curinterp != aTHX)
return (Sighandler_t) SIG_ERR;
#endif
- act.sa_handler = (void(*)(int))handler;
+ act.sa_handler = handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
#ifdef SA_RESTART
Perl_rsignal_save(pTHX_ int signo, Sighandler_t handler, Sigsave_t *save)
{
#ifdef USE_ITHREADS
- dVAR;
#endif
struct sigaction act;
return -1;
#endif
- act.sa_handler = (void(*)(int))handler;
+ act.sa_handler = handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
#ifdef SA_RESTART
Perl_rsignal_restore(pTHX_ int signo, Sigsave_t *save)
{
#ifdef USE_ITHREADS
- dVAR;
#endif
PERL_UNUSED_CONTEXT;
#ifdef USE_ITHREADS
static Signal_t
sig_trap(int signo)
{
- dVAR;
PL_sig_trapped++;
}
Sighandler_t
Perl_rsignal_state(pTHX_ int signo)
{
- dVAR;
Sighandler_t oldsig;
#if defined(USE_ITHREADS) && !defined(WIN32)
Perl_get_context(void)
{
#if defined(USE_ITHREADS)
- dVAR;
# ifdef OLD_PTHREADS_API
pthread_addr_t t;
- int error = pthread_getspecific(PL_thr_key, &t)
+ int error = pthread_getspecific(PL_thr_key, &t);
if (error)
Perl_croak_nocontext("panic: pthread_getspecific, error=%d", error);
return (void*)t;
Perl_set_context(void *t)
{
#if defined(USE_ITHREADS)
- dVAR;
#endif
PERL_ARGS_ASSERT_SET_CONTEXT;
#if defined(USE_ITHREADS)
#endif /* !PERL_GET_CONTEXT_DEFINED */
-#if defined(PERL_GLOBAL_STRUCT) && !defined(PERL_GLOBAL_STRUCT_PRIVATE)
-struct perl_vars *
-Perl_GetVars(pTHX)
-{
- PERL_UNUSED_CONTEXT;
- return &PL_Vars;
-}
-#endif
-
char **
Perl_get_op_names(pTHX)
{
PPADDR_t*
Perl_get_ppaddr(pTHX)
{
- dVAR;
PERL_UNUSED_CONTEXT;
return (PPADDR_t*)PL_ppaddr;
}
PERL_UNUSED_CONTEXT;
PERL_ARGS_ASSERT_INIT_TM;
(void)time(&now);
+ ENV_LOCALE_READ_LOCK;
my_tm = localtime(&now);
if (my_tm)
Copy(my_tm, ptm, 1, struct tm);
+ ENV_LOCALE_READ_UNLOCK;
#else
PERL_UNUSED_CONTEXT;
PERL_ARGS_ASSERT_INIT_TM;
{
#ifdef HAS_STRFTIME
- /* strftime(), but with a different API so that the return value is a pointer
- * to the formatted result (which MUST be arranged to be FREED BY THE
- * CALLER). This allows this function to increase the buffer size as needed,
- * so that the caller doesn't have to worry about that.
- *
- * Note that yday and wday effectively are ignored by this function, as
- * mini_mktime() overwrites them */
+/*
+=for apidoc my_strftime
+strftime(), but with a different API so that the return value is a pointer
+to the formatted result (which MUST be arranged to be FREED BY THE
+CALLER). This allows this function to increase the buffer size as needed,
+so that the caller doesn't have to worry about that.
+
+Note that yday and wday effectively are ignored by this function, as
+mini_mktime() overwrites them
+
+=cut
+ */
char *buf;
int buflen;
** If there is a better way to make it portable, go ahead by
** all means.
*/
- if ((len > 0 && len < buflen) || (len == 0 && *fmt == '\0'))
+ if (inRANGE(len, 1, buflen - 1) || (len == 0 && *fmt == '\0'))
return buf;
else {
/* Possibly buf overflowed - try again with a bigger buf */
buflen = strftime(buf, bufsize, fmt, &mytm);
GCC_DIAG_RESTORE_STMT;
- if (buflen > 0 && buflen < bufsize)
+ if (inRANGE(buflen, 1, bufsize - 1))
break;
/* heuristic to prevent out-of-memory errors */
if (bufsize > 100*fmtlen) {
#ifdef ECONNABORTED
errno = ECONNABORTED; /* This would be the standard thing to do. */
#elif defined(ECONNREFUSED)
- errno = ECONNREFUSED; /* E.g. Symbian does not have ECONNABORTED. */
+ errno = ECONNREFUSED; /* some OSes might not have ECONNABORTED. */
#else
errno = ETIMEDOUT; /* Desperation time. */
#endif
#endif
}
-#ifdef PERL_GLOBAL_STRUCT
-
-#define PERL_GLOBAL_STRUCT_INIT
-#include "opcode.h" /* the ppaddr and check */
-
-struct perl_vars *
-Perl_init_global_struct(pTHX)
-{
- struct perl_vars *plvarsp = NULL;
-# ifdef PERL_GLOBAL_STRUCT
- const IV nppaddr = C_ARRAY_LENGTH(Gppaddr);
- const IV ncheck = C_ARRAY_LENGTH(Gcheck);
- PERL_UNUSED_CONTEXT;
-# ifdef PERL_GLOBAL_STRUCT_PRIVATE
- /* PerlMem_malloc() because can't use even safesysmalloc() this early. */
- plvarsp = (struct perl_vars*)PerlMem_malloc(sizeof(struct perl_vars));
- if (!plvarsp)
- exit(1);
-# else
- plvarsp = PL_VarsPtr;
-# endif /* PERL_GLOBAL_STRUCT_PRIVATE */
-# undef PERLVAR
-# undef PERLVARA
-# undef PERLVARI
-# undef PERLVARIC
-# define PERLVAR(prefix,var,type) /**/
-# define PERLVARA(prefix,var,n,type) /**/
-# define PERLVARI(prefix,var,type,init) plvarsp->prefix##var = init;
-# define PERLVARIC(prefix,var,type,init) plvarsp->prefix##var = init;
-# include "perlvars.h"
-# undef PERLVAR
-# undef PERLVARA
-# undef PERLVARI
-# undef PERLVARIC
-# ifdef PERL_GLOBAL_STRUCT
- plvarsp->Gppaddr =
- (Perl_ppaddr_t*)
- PerlMem_malloc(nppaddr * sizeof(Perl_ppaddr_t));
- if (!plvarsp->Gppaddr)
- exit(1);
- plvarsp->Gcheck =
- (Perl_check_t*)
- PerlMem_malloc(ncheck * sizeof(Perl_check_t));
- if (!plvarsp->Gcheck)
- exit(1);
- Copy(Gppaddr, plvarsp->Gppaddr, nppaddr, Perl_ppaddr_t);
- Copy(Gcheck, plvarsp->Gcheck, ncheck, Perl_check_t);
-# endif
-# ifdef PERL_SET_VARS
- PERL_SET_VARS(plvarsp);
-# endif
-# ifdef PERL_GLOBAL_STRUCT_PRIVATE
- plvarsp->Gsv_placeholder.sv_flags = 0;
- memset(plvarsp->Ghash_seed, 0, sizeof(plvarsp->Ghash_seed));
-# endif
-# undef PERL_GLOBAL_STRUCT_INIT
-# endif
- return plvarsp;
-}
-
-#endif /* PERL_GLOBAL_STRUCT */
-
-#ifdef PERL_GLOBAL_STRUCT
-
-void
-Perl_free_global_struct(pTHX_ struct perl_vars *plvarsp)
-{
- int veto = plvarsp->Gveto_cleanup;
-
- PERL_ARGS_ASSERT_FREE_GLOBAL_STRUCT;
- PERL_UNUSED_CONTEXT;
-# ifdef PERL_GLOBAL_STRUCT
-# ifdef PERL_UNSET_VARS
- PERL_UNSET_VARS(plvarsp);
-# endif
- if (veto)
- return;
- free(plvarsp->Gppaddr);
- free(plvarsp->Gcheck);
-# ifdef PERL_GLOBAL_STRUCT_PRIVATE
- free(plvarsp);
-# endif
-# endif
-}
-
-#endif /* PERL_GLOBAL_STRUCT */
-
#ifdef PERL_MEM_LOG
/* -DPERL_MEM_LOG: the Perl_mem_log_..() is compiled, including
#endif /* PERL_MEM_LOG */
/*
-=for apidoc quadmath_format_single
+=for apidoc quadmath_format_valid
C<quadmath_snprintf()> is very strict about its C<format> string and will
fail, returning -1, if the format is invalid. It accepts exactly
one format spec.
-C<quadmath_format_single()> checks that the intended single spec looks
+C<quadmath_format_valid()> checks that the intended single spec looks
sane: begins with C<%>, has only one C<%>, ends with C<[efgaEFGA]>,
and has C<Q> before it. This is not a full "printf syntax check",
just the basics.
-Returns the format if it is valid, NULL if not.
-
-C<quadmath_format_single()> can and will actually patch in the missing
-C<Q>, if necessary. In this case it will return the modified copy of
-the format, B<which the caller will need to free.>
+Returns true if it is valid, false if not.
See also L</quadmath_format_needed>.
=cut
*/
#ifdef USE_QUADMATH
-const char*
-Perl_quadmath_format_single(const char* format)
+bool
+Perl_quadmath_format_valid(const char* format)
{
STRLEN len;
- PERL_ARGS_ASSERT_QUADMATH_FORMAT_SINGLE;
+ PERL_ARGS_ASSERT_QUADMATH_FORMAT_VALID;
if (format[0] != '%' || strchr(format + 1, '%'))
- return NULL;
+ return FALSE;
len = strlen(format);
/* minimum length three: %Qg */
- if (len < 3 || strchr("efgaEFGA", format[len - 1]) == NULL)
- return NULL;
- if (format[len - 2] != 'Q') {
- char* fixed;
- Newx(fixed, len + 1, char);
- memcpy(fixed, format, len - 1);
- fixed[len - 1] = 'Q';
- fixed[len ] = format[len - 1];
- fixed[len + 1] = 0;
- return (const char*)fixed;
- }
- return format;
+ if (len < 3 || memCHRs("efgaEFGA", format[len - 1]) == NULL)
+ return FALSE;
+ if (format[len - 2] != 'Q')
+ return FALSE;
+ return TRUE;
}
#endif
If true is returned, those arguments B<should> in theory be processed
with C<quadmath_snprintf()>, but in case there is more than one such
-format specifier (see L</quadmath_format_single>), and if there is
+format specifier (see L</quadmath_format_valid>), and if there is
anything else beyond that one (even just a single byte), they
B<cannot> be processed because C<quadmath_snprintf()> is very strict,
accepting only one format spec, and nothing else.
else
while (isDIGIT(*q)) q++;
}
- if (strchr("efgaEFGA", *q)) /* Would have needed 'Q' in front. */
+ if (memCHRs("efgaEFGA", *q)) /* Would have needed 'Q' in front. */
return TRUE;
p = q + 1;
}
va_start(ap, format);
#ifdef USE_QUADMATH
{
- const char* qfmt = quadmath_format_single(format);
bool quadmath_valid = FALSE;
- if (qfmt) {
+ if (quadmath_format_valid(format)) {
/* If the format looked promising, use it as quadmath. */
- retval = quadmath_snprintf(buffer, len, qfmt, va_arg(ap, NV));
+ retval = quadmath_snprintf(buffer, len, format, va_arg(ap, NV));
if (retval == -1) {
- if (qfmt != format) {
- dTHX;
- SAVEFREEPV(qfmt);
- }
- Perl_croak_nocontext("panic: quadmath_snprintf failed, format \"%s\"", qfmt);
+ Perl_croak_nocontext("panic: quadmath_snprintf failed, format \"%s\"", format);
}
quadmath_valid = TRUE;
- if (qfmt != format)
- Safefree(qfmt);
- qfmt = NULL;
}
- assert(qfmt == NULL);
/* quadmath_format_single() will return false for example for
* "foo = %g", or simply "%g". We could handle the %g by
* using quadmath for the NV args. More complex cases of
=for apidoc my_vsnprintf
The C library C<vsnprintf> if available and standards-compliant.
-However, if if the C<vsnprintf> is not available, will unfortunately
+However, if the C<vsnprintf> is not available, will unfortunately
use the unsafe C<vsprintf> which can overrun the buffer (there is an
overrun check, but that may be too late). Consider using
C<sv_vcatpvf> instead, or getting C<vsnprintf>.
void
Perl_my_clearenv(pTHX)
{
- dVAR;
#if ! defined(PERL_MICRO)
# if defined(PERL_IMPLICIT_SYS) || defined(WIN32)
PerlEnv_clearenv();
# else /* ! (PERL_IMPLICIT_SYS || WIN32) */
# if defined(USE_ENVIRON_ARRAY)
# if defined(USE_ITHREADS)
- /* only the parent thread can clobber the process environment */
+ /* only the parent thread can clobber the process environment, so no need
+ * to use a mutex */
if (PL_curinterp == aTHX)
# endif /* USE_ITHREADS */
{
#ifdef PERL_IMPLICIT_CONTEXT
+
/* Implements the MY_CXT_INIT macro. The first time a module is loaded,
the global PL_my_cxt_index is incremented, and that value is assigned to
that module's static my_cxt_index (who's address is passed as an arg).
void* slot is available to hang the static data off, by allocating or
extending the interpreter's PL_my_cxt_list array */
-#ifndef PERL_GLOBAL_STRUCT_PRIVATE
void *
-Perl_my_cxt_init(pTHX_ int *index, size_t size)
+Perl_my_cxt_init(pTHX_ int *indexp, size_t size)
{
- dVAR;
- void *p;
- PERL_ARGS_ASSERT_MY_CXT_INIT;
- if (*index == -1) {
- /* this module hasn't been allocated an index yet */
- MUTEX_LOCK(&PL_my_ctx_mutex);
- *index = PL_my_cxt_index++;
- MUTEX_UNLOCK(&PL_my_ctx_mutex);
- }
-
- /* make sure the array is big enough */
- if (PL_my_cxt_size <= *index) {
- if (PL_my_cxt_size) {
- IV new_size = PL_my_cxt_size;
- while (new_size <= *index)
- new_size *= 2;
- Renew(PL_my_cxt_list, new_size, void *);
- PL_my_cxt_size = new_size;
- }
- else {
- PL_my_cxt_size = 16;
- Newx(PL_my_cxt_list, PL_my_cxt_size, void *);
- }
- }
- /* newSV() allocates one more than needed */
- p = (void*)SvPVX(newSV(size-1));
- PL_my_cxt_list[*index] = p;
- Zero(p, size, char);
- return p;
-}
-
-#else /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */
-
-int
-Perl_my_cxt_index(pTHX_ const char *my_cxt_key)
-{
- dVAR;
- int index;
-
- PERL_ARGS_ASSERT_MY_CXT_INDEX;
-
- for (index = 0; index < PL_my_cxt_index; index++) {
- const char *key = PL_my_cxt_keys[index];
- /* try direct pointer compare first - there are chances to success,
- * and it's much faster.
- */
- if ((key == my_cxt_key) || strEQ(key, my_cxt_key))
- return index;
- }
- return -1;
-}
-
-void *
-Perl_my_cxt_init(pTHX_ const char *my_cxt_key, size_t size)
-{
- dVAR;
void *p;
int index;
PERL_ARGS_ASSERT_MY_CXT_INIT;
- index = Perl_my_cxt_index(aTHX_ my_cxt_key);
+ index = *indexp;
+ /* do initial check without locking.
+ * -1: not allocated or another thread currently allocating
+ * other: already allocated by another thread
+ */
if (index == -1) {
- /* this module hasn't been allocated an index yet */
MUTEX_LOCK(&PL_my_ctx_mutex);
- index = PL_my_cxt_index++;
+ /*now a stricter check with locking */
+ index = *indexp;
+ if (index == -1)
+ /* this module hasn't been allocated an index yet */
+ *indexp = PL_my_cxt_index++;
+ index = *indexp;
MUTEX_UNLOCK(&PL_my_ctx_mutex);
}
/* make sure the array is big enough */
if (PL_my_cxt_size <= index) {
- int old_size = PL_my_cxt_size;
- int i;
if (PL_my_cxt_size) {
IV new_size = PL_my_cxt_size;
while (new_size <= index)
new_size *= 2;
Renew(PL_my_cxt_list, new_size, void *);
- Renew(PL_my_cxt_keys, new_size, const char *);
PL_my_cxt_size = new_size;
}
else {
PL_my_cxt_size = 16;
Newx(PL_my_cxt_list, PL_my_cxt_size, void *);
- Newx(PL_my_cxt_keys, PL_my_cxt_size, const char *);
- }
- for (i = old_size; i < PL_my_cxt_size; i++) {
- PL_my_cxt_keys[i] = 0;
- PL_my_cxt_list[i] = 0;
}
}
- PL_my_cxt_keys[index] = my_cxt_key;
/* newSV() allocates one more than needed */
p = (void*)SvPVX(newSV(size-1));
PL_my_cxt_list[index] = p;
Zero(p, size, char);
return p;
}
-#endif /* #ifndef PERL_GLOBAL_STRUCT_PRIVATE */
+
#endif /* PERL_IMPLICIT_CONTEXT */
}
#endif
-/*
-=for apidoc my_strnlen
-
-The C library C<strnlen> if available, or a Perl implementation of it.
-
-C<my_strnlen()> computes the length of the string, up to C<maxlen>
-characters. It will will never attempt to address more than C<maxlen>
-characters, making it suitable for use with strings that are not
-guaranteed to be NUL-terminated.
-
-=cut
-
-Description stolen from http://man.openbsd.org/strnlen.3,
-implementation stolen from PostgreSQL.
-*/
-#ifndef HAS_STRNLEN
-Size_t
-Perl_my_strnlen(const char *str, Size_t maxlen)
-{
- const char *p = str;
-
- PERL_ARGS_ASSERT_MY_STRNLEN;
-
- while(maxlen-- && *p)
- p++;
-
- return p - str;
-}
-#endif
-
#if defined(_MSC_VER) && (_MSC_VER >= 1300) && (_MSC_VER < 1400) && (WINVER < 0x0500)
/* VC7 or 7.1, building with pre-VC7 runtime libraries. */
long _ftol( double ); /* Defined by VC6 C libs. */
STRLEN len = strlen(templte);
int fd;
int attempts = 0;
+#ifdef VMS
+ int delete_on_close = flags & O_VMS_DELETEONCLOSE;
+
+ flags &= ~O_VMS_DELETEONCLOSE;
+#endif
if (len < 6 ||
templte[len-1] != 'X' || templte[len-2] != 'X' || templte[len-3] != 'X' ||
for (i = 1; i <= 6; ++i) {
templte[len-i] = TEMP_FILE_CH[(int)(Perl_internal_drand48() * TEMP_FILE_CH_COUNT)];
}
- fd = PerlLIO_open3(templte, O_RDWR | O_CREAT | O_EXCL | flags, 0600);
+#ifdef VMS
+ if (delete_on_close) {
+ fd = open(templte, O_RDWR | O_CREAT | O_EXCL | flags, 0600, "fop=dlt");
+ }
+ else
+#endif
+ {
+ fd = PerlLIO_open3(templte, O_RDWR | O_CREAT | O_EXCL | flags, 0600);
+ }
} while (fd == -1 && errno == EEXIST && ++attempts <= 100);
return fd;
Safefree(raw_frames);
return bt;
#else
- PERL_UNUSED_ARGV(depth);
- PERL_UNUSED_ARGV(skip);
+ PERL_UNUSED_ARG(depth);
+ PERL_UNUSED_ARG(skip);
return NULL;
#endif
}
#endif /* #ifdef USE_C_BACKTRACE */
-#ifdef PERL_TSA_ACTIVE
+#if defined(USE_ITHREADS) && defined(I_PTHREAD)
/* pthread_mutex_t and perl_mutex are typedef equivalent
* so casting the pointers is fine. */
#endif
-
#ifdef USE_DTRACE
/* log a sub call or return */
https://perl5.git.perl.org / perl5.git / blobdiff