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| author | Ulrich Drepper <drepper@redhat.com> | 2000-06-07 22:50:32 +0000 |
|---|---|---|
| committer | Ulrich Drepper <drepper@redhat.com> | 2000-06-07 22:50:32 +0000 |
| commit | 3fc9ca4e389ff1606a4883d50401eaa1a777a07e (patch) | |
| tree | 70a6a54e2bf0415e3622475f1a0613a7cfef3b40 /libio | |
| parent | ce177a8416e21b074d1d3382d81939897ff86fa8 (diff) | |
| download | glibc-3fc9ca4e389ff1606a4883d50401eaa1a777a07e.tar.gz | |
Update.
2000-06-04 Kaz Kylheku <kaz@ashi.footprints.net>
Lock for stdio stream list becomes global, for use in LinuxThreads.
* libio/genops.c (_IO_iter_begin, _IO_iter_end,
_IO_iter_next, _IO_iter_file, _IO_list_lock, _IO_list_unlock,
_IO_list_resetlock): New interface for iterating global list of
streams without accessing the _IO_list_all global variable,
and for manipulating the lock which protects this list.
* libio/libioP.h: Likewise.
* libio/Version: Add entries for the new functions.
* libio/libioP.h (_IO_ITER): New typedef, just an alias for
pointer to _IO_FILE.
Diffstat (limited to 'libio')
| -rw-r--r-- | libio/Versions | 4 | ||||
| -rw-r--r-- | libio/genops.c | 44 | ||||
| -rw-r--r-- | libio/libioP.h | 15 |
3 files changed, 63 insertions, 0 deletions
diff --git a/libio/Versions b/libio/Versions index 654ca29a89..1fbc313cb9 100644 --- a/libio/Versions +++ b/libio/Versions @@ -104,6 +104,10 @@ libc { # functions used in libstdc++ _IO_fgetpos; _IO_fgetpos64; _IO_fsetpos; _IO_fsetpos64; + # LinuxThreads uses this protected interface + _IO_iter_begin; _IO_iter_end; _IO_iter_next; _IO_iter_file; + _IO_list_lock; _IO_list_unlock; _IO_list_resetlock; + # f* fgetpos; fgetpos64; fgetwc; fgetwc_unlocked; fgetws; fgetws_unlocked; fputwc; fputwc_unlocked; fputws; fputws_unlocked; fsetpos; fsetpos64; diff --git a/libio/genops.c b/libio/genops.c index c59518143f..fb4f08bd3f 100644 --- a/libio/genops.c +++ b/libio/genops.c @@ -1028,6 +1028,50 @@ _IO_default_imbue (fp, locale) { } +_IO_ITER +_IO_iter_begin() +{ + return _IO_list_all; +} + +_IO_ITER +_IO_iter_end() +{ + return NULL; +} + +_IO_ITER +_IO_iter_next(iter) + _IO_ITER iter; +{ + return iter->_chain; +} + +_IO_FILE * +_IO_iter_file(iter) + _IO_ITER iter; +{ + return iter; +} + +void +_IO_list_lock() +{ + _IO_lock_lock (list_all_lock); +} + +void +_IO_list_unlock() +{ + _IO_lock_unlock (list_all_lock); +} + +void +_IO_list_resetlock() +{ + _IO_lock_init (list_all_lock); +} + #ifdef TODO #if defined(linux) diff --git a/libio/libioP.h b/libio/libioP.h index 59d20cd4be..090f98a02d 100644 --- a/libio/libioP.h +++ b/libio/libioP.h @@ -313,6 +313,10 @@ struct _IO_FILE_plus const struct _IO_jump_t *vtable; }; +/* Iterator type for walking global linked list of _IO_FILE objects. */ + +typedef _IO_FILE *_IO_ITER; + /* Generic functions */ extern void _IO_switch_to_main_get_area __P ((_IO_FILE *)); @@ -351,6 +355,17 @@ extern int _IO_wmarker_delta __P ((struct _IO_marker *)); extern int _IO_seekmark __P ((_IO_FILE *, struct _IO_marker *, int)); extern int _IO_seekwmark __P ((_IO_FILE *, struct _IO_marker *, int)); +/* Functions for iterating global list and dealing with + its lock */ + +extern _IO_ITER _IO_iter_begin __P ((void)); +extern _IO_ITER _IO_iter_end __P ((void)); +extern _IO_ITER _IO_iter_next __P ((_IO_ITER)); +extern _IO_FILE *_IO_iter_file __P ((_IO_ITER)); +extern void _IO_list_lock __P ((void)); +extern void _IO_list_unlock __P ((void)); +extern void _IO_list_resetlock __P ((void)); + /* Default jumptable functions. */ extern int _IO_default_underflow __P ((_IO_FILE *)); |