/*
* For any scalar type load the handler which is bundled with perl
*/
- if (SvTYPE(sv) < SVt_PVAV)
- return PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1);
+ if (SvTYPE(sv) < SVt_PVAV) {
+ PerlIO_funcs *f = PerlIO_find_layer(aTHX_ STR_WITH_LEN("scalar"), 1);
+ /* This isn't supposed to happen, since PerlIO::scalar is core,
+ * but could happen anyway in smaller installs or with PAR */
+ if (!f && ckWARN(WARN_LAYER))
+ Perl_warner(aTHX_ packWARN(WARN_LAYER), "Unknown PerlIO layer \"scalar\"");
+ return f;
+ }
/*
* For other types allow if layer is known but don't try and load it
/* PL_perlio_fd_refcnt[] is in intrpvar.h */
-/* Must be called with PL_perlio_mutex locked (if under 5.005 threads). */
+/* Must be called with PL_perlio_mutex locked. */
static void
S_more_refcounted_fds(pTHX_ const int new_fd) {
dVAR;
assert (new_max > new_fd);
- new_array =
- (int*) PerlMemShared_realloc(PL_perlio_fd_refcnt, new_max * sizeof(int));
+ /* Use plain realloc() since we need this memory to be really
+ * global and visible to all the interpreters and/or threads. */
+ new_array = (int*) realloc(PL_perlio_fd_refcnt, new_max * sizeof(int));
if (!new_array) {
-#ifdef USE_THREADS
+#ifdef USE_ITHREADS
MUTEX_UNLOCK(&PL_perlio_mutex);
#endif
/* Can't use PerlIO to write as it allocates memory */
void
PerlIO_init(pTHX)
{
- /* Place holder for stdstreams call ??? */
-#ifdef USE_THREADS
- MUTEX_INIT(&PL_perlio_mutex);
-#else
+ /* MUTEX_INIT(&PL_perlio_mutex) is done in PERL_SYS_INIT3(). */
PERL_UNUSED_CONTEXT;
-#endif
}
void
if (fd >= 0) {
dVAR;
-#ifdef USE_THREADS
+#ifdef USE_ITHREADS
MUTEX_LOCK(&PL_perlio_mutex);
#endif
if (fd >= PL_perlio_fd_refcnt_size)
S_more_refcounted_fds(aTHX_ fd);
PL_perlio_fd_refcnt[fd]++;
- PerlIO_debug("fd %d refcnt=%d\n",fd,PL_perlio_fd_refcnt[fd]);
+ if (PL_perlio_fd_refcnt[fd] <= 0) {
+ Perl_croak(aTHX_ "refcnt_inc: fd %d: %d <= 0\n",
+ fd, PL_perlio_fd_refcnt[fd]);
+ }
+ PerlIO_debug("refcnt_inc: fd %d refcnt=%d\n",
+ fd, PL_perlio_fd_refcnt[fd]);
-#ifdef USE_THREADS
+#ifdef USE_ITHREADS
MUTEX_UNLOCK(&PL_perlio_mutex);
#endif
+ } else {
+ Perl_croak(aTHX_ "refcnt_inc: fd %d < 0\n", fd);
}
}
int cnt = 0;
if (fd >= 0) {
dVAR;
-#ifdef USE_THREADS
+#ifdef USE_ITHREADS
MUTEX_LOCK(&PL_perlio_mutex);
#endif
- /* XXX should this be a panic? */
- if (fd >= PL_perlio_fd_refcnt_size)
- S_more_refcounted_fds(aTHX_ fd);
-
- /* XXX should this be a panic if it drops below 0? */
+ if (fd >= PL_perlio_fd_refcnt_size) {
+ Perl_croak(aTHX_ "refcnt_dec: fd %d >= refcnt_size %d\n",
+ fd, PL_perlio_fd_refcnt_size);
+ }
+ if (PL_perlio_fd_refcnt[fd] <= 0) {
+ Perl_croak(aTHX_ "refcnt_dec: fd %d: %d <= 0\n",
+ fd, PL_perlio_fd_refcnt[fd]);
+ }
cnt = --PL_perlio_fd_refcnt[fd];
- PerlIO_debug("fd %d refcnt=%d\n",fd,cnt);
-#ifdef USE_THREADS
+ PerlIO_debug("refcnt_dec: fd %d refcnt=%d\n", fd, cnt);
+#ifdef USE_ITHREADS
MUTEX_UNLOCK(&PL_perlio_mutex);
#endif
+ } else {
+ Perl_croak(aTHX_ "refcnt_dec: fd %d < 0\n", fd);
}
return cnt;
}
void PerlIO_teardown(pTHX) /* Call only from PERL_SYS_TERM(). */
{
+
#ifdef DEBUGGING
{
/* By now all filehandles should have been closed, so any
}
}
#endif
-#ifdef USE_THREADS
- MUTEX_LOCK(&PL_perlio_mutex);
-#endif
+ /* Not bothering with PL_perlio_mutex since by now
+ * all the interpreters are gone. */
if (PL_perlio_fd_refcnt_size /* Assuming initial size of zero. */
&& PL_perlio_fd_refcnt) {
-#ifdef PERL_TRACK_MEMPOOL
- Malloc_t ptr = (Malloc_t)((char*)PL_perlio_fd_refcnt-sTHX);
- struct perl_memory_debug_header *const header
- = (struct perl_memory_debug_header *)ptr;
- /* Only the thread that allocated us can free us. */
- if (header->interpreter == aTHX)
-#endif
- {
- PerlMemShared_free(PL_perlio_fd_refcnt); /* Not Safefree() because was allocated with PerlMemShared_realloc(). */
- PL_perlio_fd_refcnt = NULL;
- PL_perlio_fd_refcnt_size = 0;
- }
+ free(PL_perlio_fd_refcnt); /* To match realloc() in S_more_refcounted_fds(). */
+ PL_perlio_fd_refcnt = NULL;
+ PL_perlio_fd_refcnt_size = 0;
}
-#ifdef USE_THREADS
- MUTEX_UNLOCK(&PL_perlio_mutex);
-#endif
}
FILE * const stdio = PerlIOSelf(f, PerlIOStdio)->stdio;
if (ptr != NULL) {
#ifdef STDIO_PTR_LVALUE
- PerlSIO_set_ptr(stdio, (void*)ptr); /* LHS STDCHAR* cast non-portable */
+ PerlSIO_set_ptr(stdio, ptr); /* LHS STDCHAR* cast non-portable */
#ifdef STDIO_PTR_LVAL_SETS_CNT
if (PerlSIO_get_cnt(stdio) != (cnt)) {
assert(PerlSIO_get_cnt(stdio) == (cnt));
}
posn = (b->posn / PL_mmap_page_size) * PL_mmap_page_size;
len = st.st_size - posn;
- m->mptr = mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn);
+ m->mptr = (Mmap_t)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, posn);
if (m->mptr && m->mptr != (Mmap_t) - 1) {
#if 0 && defined(HAS_MADVISE) && defined(MADV_SEQUENTIAL)
madvise(m->mptr, len, MADV_SEQUENTIAL);
# else /* !HAS_MKSTEMP, fallback to stdio tmpfile(). */
FILE * const stdio = PerlSIO_tmpfile();
- if (stdio) {
- if ((f = PerlIO_push(aTHX_(PerlIO_allocate(aTHX)),
- PERLIO_FUNCS_CAST(&PerlIO_stdio),
- "w+", NULL))) {
- PerlIOStdio * const s = PerlIOSelf(f, PerlIOStdio);
+ if (stdio)
+ f = PerlIO_fdopen(fileno(stdio), "w+");
- if (s)
- s->stdio = stdio;
- }
- }
# endif /* else HAS_MKSTEMP */
#endif /* else WIN32 */
return f;