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| author | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-04-21 09:41:59 -0300 |
|---|---|---|
| committer | Adhemerval Zanella <adhemerval.zanella@linaro.org> | 2022-06-30 14:56:21 -0300 |
| commit | a1bdd81664aa681364da368154c48501db249df9 (patch) | |
| tree | 29f01a9ad8bcda2794869dd0555537a2de16fa38 /sysdeps/generic/internal-signals.h | |
| parent | c22d2021a9f9bdea62398976eea4f0e6ef668b7d (diff) | |
| download | glibc-a1bdd81664aa681364da368154c48501db249df9.tar.xz glibc-a1bdd81664aa681364da368154c48501db249df9.zip | |
Refactor internal-signals.h
The main drive is to optimize the internal usage and required size
when sigset_t is embedded in other data structures. On Linux, the
current supported signal set requires up to 8 bytes (16 on mips),
was lower than the user defined sigset_t (128 bytes).
A new internal type internal_sigset_t is added, along with the
functions to operate on it similar to the ones for sigset_t. The
internal-signals.h is also refactored to remove unused functions
Besides small stack usage on some functions (posix_spawn, abort)
it lower the struct pthread by about 120 bytes (112 on mips).
Checked on x86_64-linux-gnu.
Reviewed-by: Arjun Shankar <arjun@redhat.com>
Diffstat (limited to 'sysdeps/generic/internal-signals.h')
| -rw-r--r-- | sysdeps/generic/internal-signals.h | 31 |
1 files changed, 6 insertions, 25 deletions
diff --git a/sysdeps/generic/internal-signals.h b/sysdeps/generic/internal-signals.h index 6121c117ab..0c8f67f1a2 100644 --- a/sysdeps/generic/internal-signals.h +++ b/sysdeps/generic/internal-signals.h @@ -29,39 +29,20 @@ #define RESERVED_SIGRT 0 static inline bool -__is_internal_signal (int sig) +is_internal_signal (int sig) { return false; } static inline void -__clear_internal_signals (sigset_t *set) +clear_internal_signals (sigset_t *set) { } -static inline void -__libc_signal_block_all (sigset_t *set) -{ - sigset_t allset; - __sigfillset (&allset); - __sigprocmask (SIG_BLOCK, &allset, set); -} - -static inline void -__libc_signal_block_app (sigset_t *set) -{ - sigset_t allset; - __sigfillset (&allset); - __clear_internal_signals (&allset); - __sigprocmask (SIG_BLOCK, &allset, set); -} - -/* Restore current process signal mask. */ -static inline void -__libc_signal_restore_set (const sigset_t *set) -{ - __sigprocmask (SIG_SETMASK, set, NULL); -} +typedef sigset_t internal_sigset_t; +#define internal_sigemptyset(__s) sigemptyset (__s) +#define internal_sigaddset(__s, __i) sigaddset (__s, __i) +#define internal_sigprocmask(__h, __s, __o) sigprocmask (__h, __s, __o) #endif /* __INTERNAL_SIGNALS_H */ |