Add C2X timespec_getres

ISO C2X adds a timespec_getres function alongside the C11
timespec_get, with functionality similar to that of POSIX clock_getres
(including allowing a NULL pointer to be passed to the function).
Implement this function for glibc, similarly to the implementation of
timespec_get.

This includes a basic test like that of timespec_get, but no
documentation in the manual, given that TIME_UTC and timespec_get
aren't documented in the manual at all.  The handling of 64-bit time
follows that in timespec_get; people maintaining patch series for
64-bit time will need to update them accordingly (to export
__timespec_getres64, redirect calls in time.h and run the test for
_TIME_BITS=64).

Tested for x86_64 and x86, and (previous version; only testcase
differs) with build-many-glibcs.py.

diff --git a/NEWS b/NEWS
index a5631af920f9da9e5884a769c2a76e3c1b14930e..266837bf2df49d530caf8b1055ad63cb0baac000 100644 (file)
--- a/NEWS
+++ b/NEWS
@@ -23,6 +23,8 @@ Major new features:
   /proc to be mounted.  However, different than fexecve, if the syscall is not
   supported by the kernel an error is returned instead of trying a fallback.
 
+* The ISO C2X function timespec_getres has been added.
+
 Deprecated and removed features, and other changes affecting compatibility:
 
 * The function pthread_mutex_consistent_np has been deprecated; programs

diff --git a/include/time.h b/include/time.h
index e0636132a6ee3fe97d6bcfaa29b6e5ff48885d59..4372bfbd967bd1054f673f620787750da969ce32 100644 (file)
--- a/include/time.h
+++ b/include/time.h
@@ -28,6 +28,9 @@ libc_hidden_proto (__clock_gettime)
 extern __typeof (clock_settime) __clock_settime;
 libc_hidden_proto (__clock_settime)
 
+extern __typeof (clock_getres) __clock_getres;
+libc_hidden_proto (__clock_getres)
+
 extern __typeof (clock_nanosleep) __clock_nanosleep;
 libc_hidden_proto (__clock_nanosleep);
 
@@ -306,6 +309,7 @@ extern double __difftime (time_t time1, time_t time0);
 # define __clock_nanosleep_time64 __clock_nanosleep
 # define __clock_gettime64 __clock_gettime
 # define __timespec_get64 __timespec_get
+# define __timespec_getres64 __timespec_getres
 #else
 extern int __clock_nanosleep_time64 (clockid_t clock_id,
                                      int flags, const struct __timespec64 *req,
@@ -315,6 +319,8 @@ extern int __clock_gettime64 (clockid_t clock_id, struct __timespec64 *tp);
 libc_hidden_proto (__clock_gettime64)
 extern int __timespec_get64 (struct __timespec64 *ts, int base);
 libc_hidden_proto (__timespec_get64)
+extern int __timespec_getres64 (struct __timespec64 *ts, int base);
+libc_hidden_proto (__timespec_getres64)
 #endif
 
 #if __TIMESIZE == 64

diff --git a/sysdeps/mach/hurd/i386/libc.abilist b/sysdeps/mach/hurd/i386/libc.abilist
index fb2683edc2181cbaf047a4448215fcaadd7efa9c..49aa809366d8b83e5400be50d98023817993aad3 100644 (file)
--- a/sysdeps/mach/hurd/i386/libc.abilist
+++ b/sysdeps/mach/hurd/i386/libc.abilist
@@ -2208,6 +2208,7 @@ GLIBC_2.34 __isnanf128 F
 GLIBC_2.34 __libc_start_main F
 GLIBC_2.34 _hurd_libc_proc_init F
 GLIBC_2.34 execveat F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.4 __confstr_chk F
 GLIBC_2.4 __fgets_chk F
 GLIBC_2.4 __fgets_unlocked_chk F

diff --git a/sysdeps/posix/clock_getres.c b/sysdeps/posix/clock_getres.c
index 0690ae8fcf49ac8b28f13cefa1be944906cd8cff..1eb26af6f73b8dcc0fca240482b79a583bd7baa8 100644 (file)
--- a/sysdeps/posix/clock_getres.c
+++ b/sysdeps/posix/clock_getres.c
@@ -62,6 +62,7 @@ __clock_getres (clockid_t clock_id, struct timespec *res)
 
   return retval;
 }
+libc_hidden_def (__clock_getres)
 
 versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
 /* clock_getres moved to libc in version 2.17;

diff --git a/sysdeps/unix/sysv/linux/aarch64/libc.abilist b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
index c8920ed79bbe39b0eb10fdacb77c20e91cf081c6..bc051ba9f5ba0b21618fdd8e9e37670e9f081790 100644 (file)
--- a/sysdeps/unix/sysv/linux/aarch64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/aarch64/libc.abilist
@@ -2445,6 +2445,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/alpha/libc.abilist b/sysdeps/unix/sysv/linux/alpha/libc.abilist
index dbc4a25aa385c27bd4109ebd6b931740ce0d0715..3bea473d009b65f39eae1337d68da3a110344fba 100644 (file)
--- a/sysdeps/unix/sysv/linux/alpha/libc.abilist
+++ b/sysdeps/unix/sysv/linux/alpha/libc.abilist
@@ -2536,6 +2536,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/arc/libc.abilist b/sysdeps/unix/sysv/linux/arc/libc.abilist
index de790e8ecff0b2f53a4aa4bc2ab842ec7c76baac..3461527c5a033e78d73974c62d5cb99aec0b042c 100644 (file)
--- a/sysdeps/unix/sysv/linux/arc/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arc/libc.abilist
@@ -2204,6 +2204,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/arm/be/libc.abilist b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
index 93ca2a5b28c22e5c92bba580fd3470ad0ab3206c..7c3029a7e5f1a783d557752c0740b783d85d4dfa 100644 (file)
--- a/sysdeps/unix/sysv/linux/arm/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/be/libc.abilist
@@ -311,6 +311,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/arm/le/libc.abilist b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
index 935b2f99bb022be6dc3aae035865965dda99852c..24f5b202e879fb5a60a04294ba00c1c902f10705 100644 (file)
--- a/sysdeps/unix/sysv/linux/arm/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/arm/le/libc.abilist
@@ -308,6 +308,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/clock_getres.c b/sysdeps/unix/sysv/linux/clock_getres.c
index 14e50fbdf2597a81a4777a04619b0248e8cd1a51..d560cd7c48639572c25425601cf2b996ecb70c32 100644 (file)
--- a/sysdeps/unix/sysv/linux/clock_getres.c
+++ b/sysdeps/unix/sysv/linux/clock_getres.c
@@ -79,6 +79,7 @@ __clock_getres (clockid_t clock_id, struct timespec *res)
   return retval;
 }
 #endif
+libc_hidden_def (__clock_getres)
 
 versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
 /* clock_getres moved to libc in version 2.17;

diff --git a/sysdeps/unix/sysv/linux/csky/libc.abilist b/sysdeps/unix/sysv/linux/csky/libc.abilist
index 32f14e48f635c0e0330be425934788938f3898c1..85851c5fca7eb39cd3f970c13d8691fdba554687 100644 (file)
--- a/sysdeps/unix/sysv/linux/csky/libc.abilist
+++ b/sysdeps/unix/sysv/linux/csky/libc.abilist
@@ -2388,6 +2388,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/hppa/libc.abilist b/sysdeps/unix/sysv/linux/hppa/libc.abilist
index 4264754c4d2dd173a5c9d6e1f54e4e402e149c5e..ede69c7ed5e9c827fb272de003b776ce13e55334 100644 (file)
--- a/sysdeps/unix/sysv/linux/hppa/libc.abilist
+++ b/sysdeps/unix/sysv/linux/hppa/libc.abilist
@@ -2341,6 +2341,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/i386/libc.abilist b/sysdeps/unix/sysv/linux/i386/libc.abilist
index 519a0606431c887da2c9cd62e8e25c1552be144b..c883dc08bcdf73ca7786cae9c184a1c94683739c 100644 (file)
--- a/sysdeps/unix/sysv/linux/i386/libc.abilist
+++ b/sysdeps/unix/sysv/linux/i386/libc.abilist
@@ -2524,6 +2524,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/ia64/libc.abilist b/sysdeps/unix/sysv/linux/ia64/libc.abilist
index 7a13ab08f601b058febafd32fabac142f11bcead..38fb02e32b4e7edba5da10f4c9347951ba08a9ec 100644 (file)
--- a/sysdeps/unix/sysv/linux/ia64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/ia64/libc.abilist
@@ -2377,6 +2377,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
index 9b378e4447a4bc2fc3b7e1a297258eb45411aaae..8ee964882860784b36b868486a4c23ca0f45a462 100644 (file)
--- a/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/coldfire/libc.abilist
@@ -312,6 +312,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
index b6d0f57e9d089a1d52719bdbb04061e61df52151..1c51cb41ec9c0bd75e18e0e59585fd21a7e050f6 100644 (file)
--- a/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
+++ b/sysdeps/unix/sysv/linux/m68k/m680x0/libc.abilist
@@ -2467,6 +2467,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
index ac5d3656c7f552f9795db8c2476c29edd6268917..f8b67cd170b109997d7dfb7285cc6a22afb631fc 100644 (file)
--- a/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/be/libc.abilist
@@ -2439,6 +2439,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
index 3c47c1c907a526fed337ddaebd8fb802a7970cdc..edac4a1bb4b96eabee138cd2a3fe2ce7098b8c6c 100644 (file)
--- a/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/microblaze/le/libc.abilist
@@ -2436,6 +2436,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
index f9b4a578a93cad7753871e818fce6bd3d06c923c..db900c89ab02a98431a6476dde6ff8ac2b386df6 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/fpu/libc.abilist
@@ -2432,6 +2432,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
index 9e6c0e1c57e3e91e464bc4ad132972349676a192..4e15f48b6cf185ee3213187cdfc9b973e35ee39c 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips32/nofpu/libc.abilist
@@ -2430,6 +2430,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
index d52f48065022d0fe8b719e386cfd72ef5b790dba..616a6076f105517f1e0179ecf0c76a97406c72e9 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n32/libc.abilist
@@ -2438,6 +2438,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
index 86727e2e5004916865461fff6c29a2d9c4a3e701..59a353d3066c5233bfdc5f88a48d652c0279c885 100644 (file)
--- a/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/mips/mips64/n64/libc.abilist
@@ -2432,6 +2432,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/nios2/libc.abilist b/sysdeps/unix/sysv/linux/nios2/libc.abilist
index af7e10feb60e807e1d450fdb4d289bb37dce4d2e..0fc42897aa7da2fd2017149ad354ad8c4b2c61cf 100644 (file)
--- a/sysdeps/unix/sysv/linux/nios2/libc.abilist
+++ b/sysdeps/unix/sysv/linux/nios2/libc.abilist
@@ -2478,6 +2478,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
index 9591c4b78292fb14188c405879e7c115245da7dd..553ecdabc9790ec80d3ef2b9a96e5253cd7e9f67 100644 (file)
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/fpu/libc.abilist
@@ -2494,6 +2494,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
index f539198508e83558062ca19ddc5fe65b1526ba7c..7ec438f7b492d1a112c56a22c4299ba1cec02e6c 100644 (file)
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc32/nofpu/libc.abilist
@@ -2527,6 +2527,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
index f4d4d39e38829c39768c54b1f0fd6384289e25ab..f382e3e2968435deb739d07afdf337de39adf153 100644 (file)
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/be/libc.abilist
@@ -2342,6 +2342,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
index 632acd4d74e8ce759008899e82e29fada7173db3..97ff951418ad9addb04a2093004da0bdb3a2c107 100644 (file)
--- a/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/powerpc/powerpc64/le/libc.abilist
@@ -2641,6 +2641,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
index 7080ea11198f20cf4f640dc3013537617418de3e..5bde5bb50871b9413d0496ca892361c1ba687269 100644 (file)
--- a/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv32/libc.abilist
@@ -2206,6 +2206,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
index dbdf580afc5c79186abd6826aa7708dad8bd6411..42f6d52e1311042fd49973c9df7172bab7c28075 100644 (file)
--- a/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/riscv/rv64/libc.abilist
@@ -2406,6 +2406,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
index ba6f93488f558294c277e4a23648dee7278ec6d5..2274342208ad22924226b7537a65d30dfc677ce0 100644 (file)
--- a/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/libc.abilist
@@ -2492,6 +2492,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
index 4e814da843ad07ae831f5ac937ed03e052d6b9ea..14d1c5e7f80eb6318082f9c5643c6c5a47171f7b 100644 (file)
--- a/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/libc.abilist
@@ -2379,6 +2379,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/sh/be/libc.abilist b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
index ed0575e545c7a1ede5b4a7063751e20c372e53c6..97942ff01a862d5ca024ff924d376172c84b82dd 100644 (file)
--- a/sysdeps/unix/sysv/linux/sh/be/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/be/libc.abilist
@@ -2348,6 +2348,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/sh/le/libc.abilist b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
index 23c356ea4dad91c104ab9d9bb8e6bad8ab802615..617b673620c127aa3294fade84ca7135e9bc055c 100644 (file)
--- a/sysdeps/unix/sysv/linux/sh/le/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sh/le/libc.abilist
@@ -2345,6 +2345,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
index dd24236ad8326b0960b1a7a3c528457c9ed85c45..3c6559bb4f1e0102149e2cf4bb339c755c0f58ca 100644 (file)
--- a/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc32/libc.abilist
@@ -2485,6 +2485,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
index b3fcaadd70ddb05caf74e9407392552bd2bf3a71..77f54bb23bc0ab1859ec41759746df698a7af3f0 100644 (file)
--- a/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/sparc/sparc64/libc.abilist
@@ -2398,6 +2398,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/timespec_getres.c b/sysdeps/unix/sysv/linux/timespec_getres.c
new file mode 100644 (file)
index 0000000..9e67914
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/timespec_getres.c
@@ -0,0 +1,50 @@
+/* Get resolution of a time base.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+/* Set TS to resolution of time base BASE.  */
+int
+__timespec_getres64 (struct __timespec64 *ts, int base)
+{
+  if (base == TIME_UTC)
+    {
+      __clock_getres64 (CLOCK_REALTIME, ts);
+      return base;
+    }
+  return 0;
+}
+
+#if __TIMESIZE != 64
+libc_hidden_def (__timespec_getres64)
+
+int
+__timespec_getres (struct timespec *ts, int base)
+{
+  int ret;
+  struct __timespec64 tp64;
+
+  ret = __timespec_getres64 (&tp64, base);
+
+  if (ret == TIME_UTC && ts != NULL)
+    *ts = valid_timespec64_to_timespec (tp64);
+
+  return ret;
+}
+#endif
+strong_alias (__timespec_getres, timespec_getres);

diff --git a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
index ea61127067102b7e88a4b055601d6cd33b832985..4035841a1ea457fa2f48ce018765ab1e1b9bf04f 100644 (file)
--- a/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/64/libc.abilist
@@ -2357,6 +2357,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
index 84253669154bdc028176a00ee10e25399db378e5..61ac187db9e8291c72bb3fc83b6070749c27fd26 100644 (file)
--- a/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
+++ b/sysdeps/unix/sysv/linux/x86_64/x32/libc.abilist
@@ -2460,6 +2460,7 @@ GLIBC_2.34 sem_wait F
 GLIBC_2.34 thrd_detach F
 GLIBC_2.34 thrd_exit F
 GLIBC_2.34 thrd_join F
+GLIBC_2.34 timespec_getres F
 GLIBC_2.34 tss_create F
 GLIBC_2.34 tss_delete F
 GLIBC_2.34 tss_get F

diff --git a/time/Makefile b/time/Makefile
index e1faeb39213592594a3d0a404fc400fd39009545..805c79c4d0dabcf788632281a78810b6ce698acc 100644 (file)
--- a/time/Makefile
+++ b/time/Makefile
@@ -36,7 +36,7 @@ routines := offtime asctime clock ctime ctime_r difftime \
            stime dysize timegm ftime                    \
            getdate strptime strptime_l                  \
            strftime wcsftime strftime_l wcsftime_l      \
-           timespec_get                                 \
+           timespec_get timespec_getres                 \
            clock_getcpuclockid clock_getres             \
            clock_gettime clock_settime clock_nanosleep
 
@@ -50,7 +50,7 @@ tests := test_time clocktest tst-posixtz tst-strptime tst_wcsftime \
           tst-clock tst-clock2 tst-clock_nanosleep tst-cpuclock1 \
           tst-adjtime tst-ctime tst-difftime tst-mktime4 tst-clock_settime \
           tst-settimeofday tst-itimer tst-gmtime tst-timegm \
-          tst-timespec_get
+          tst-timespec_get tst-timespec_getres
 
 include ../Rules
 

diff --git a/time/Versions b/time/Versions
index df22ac7f6a1b153365513ef4f899274483ec05aa..69dad1e7b0b9467a0ce48a01793e2bdd55bcbf12 100644 (file)
--- a/time/Versions
+++ b/time/Versions
@@ -74,6 +74,9 @@ libc {
     clock_getres; clock_gettime; clock_settime; clock_getcpuclockid;
     clock_nanosleep;
   }
+  GLIBC_2.34 {
+    timespec_getres;
+  }
   GLIBC_PRIVATE {
     # same as clock_gettime; used in other libraries
     __clock_gettime;

diff --git a/time/clock_getres.c b/time/clock_getres.c
index 9099b6267247f515a85070dbdef82a4dd8548e89..69d2446504c570eef611119aa61ee60356c9f681 100644 (file)
--- a/time/clock_getres.c
+++ b/time/clock_getres.c
@@ -27,6 +27,7 @@ __clock_getres (clockid_t clock_id, struct timespec *res)
   __set_errno (ENOSYS);
   return -1;
 }
+libc_hidden_def (__clock_getres)
 
 versioned_symbol (libc, __clock_getres, clock_getres, GLIBC_2_17);
 /* clock_getres moved to libc in version 2.17;

diff --git a/time/time.h b/time/time.h
index 3bf206be0b92f92628fadf882e7e0e0412f646bb..5a7f419905d4a83c321d52b0431d0120a8b76d18 100644 (file)
--- a/time/time.h
+++ b/time/time.h
@@ -259,6 +259,13 @@ extern int timespec_get (struct timespec *__ts, int __base)
 #endif
 
 
+#if __GLIBC_USE (ISOC2X)
+/* Set TS to resolution of time base BASE.  */
+extern int timespec_getres (struct timespec *__ts, int __base)
+     __THROW;
+#endif
+
+
 #ifdef __USE_XOPEN_EXTENDED
 /* Set to one of the following values to indicate an error.
      1  the DATEMSK environment variable is null or undefined,

diff --git a/time/timespec_getres.c b/time/timespec_getres.c
new file mode 100644 (file)
index 0000000..2a5f6ed
--- /dev/null
+++ b/time/timespec_getres.c
@@ -0,0 +1,32 @@
+/* Get resolution of a time base.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+
+
+/* Set TS to resolution of time base BASE.  */
+int
+timespec_getres (struct timespec *ts, int base)
+{
+  if (base == TIME_UTC)
+    {
+      __clock_getres (CLOCK_REALTIME, ts);
+      return base;
+    }
+  return 0;
+}

diff --git a/time/tst-timespec_getres.c b/time/tst-timespec_getres.c
new file mode 100644 (file)
index 0000000..e15824c
--- /dev/null
+++ b/time/tst-timespec_getres.c
@@ -0,0 +1,51 @@
+/* Basic tests for timespec_getres.
+   Copyright (C) 2021 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, see
+   <https://www.gnu.org/licenses/>.  */
+
+#include <time.h>
+#include <support/check.h>
+
+static int
+do_test (void)
+{
+  {
+    struct timespec ts;
+    TEST_COMPARE (timespec_getres (&ts, 0), 0);
+    TEST_COMPARE (timespec_getres (NULL, 0), 0);
+  }
+
+  {
+    struct timespec ts;
+    TEST_COMPARE (timespec_getres (&ts, TIME_UTC), TIME_UTC);
+    /* Expect all supported systems to support TIME_UTC with
+       resolution better than one second.  */
+    TEST_VERIFY (ts.tv_sec == 0);
+    TEST_VERIFY (ts.tv_nsec > 0);
+    TEST_VERIFY (ts.tv_nsec < 1000000000);
+    TEST_COMPARE (timespec_getres (NULL, TIME_UTC), TIME_UTC);
+    /* Expect the resolution to be the same as that reported for
+       CLOCK_REALTIME with clock_getres.  */
+    struct timespec cts;
+    TEST_COMPARE (clock_getres (CLOCK_REALTIME, &cts), 0);
+    TEST_COMPARE (ts.tv_sec, cts.tv_sec);
+    TEST_COMPARE (ts.tv_nsec, cts.tv_nsec);
+  }
+
+  return 0;
+}
+
+#include <support/test-driver.c>