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author | Zack Weinberg <zackw@panix.com> | 2016-08-24 11:54:34 -0400 |
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committer | Zack Weinberg <zackw@panix.com> | 2016-09-23 08:43:56 -0400 |
commit | 05b68e14b146586c46121730241142256f0ef850 (patch) | |
tree | 678251dbc6c91e596cd49ed80ccaa61f8c072764 /sysdeps | |
parent | f2bea4da2e65b5d91a23a01fb2062bcec33974aa (diff) | |
download | glibc-05b68e14b146586c46121730241142256f0ef850.zip glibc-05b68e14b146586c46121730241142256f0ef850.tar.gz glibc-05b68e14b146586c46121730241142256f0ef850.tar.bz2 |
Installed-header hygiene (BZ#20366): time.h types.
Many headers are expected to expose a subset of the type definitions
in time.h. time.h has a whole bunch of messy logic for conditionally
defining some its types and structs, but, as best I can tell, this
has never worked 100%. In particular, __need_timespec is ineffective
if _TIME_H has already been defined, which means that if you compile
#include <time.h>
#include <sched.h>
with e.g. -fsyntax-only -std=c89 -Wall -Wsystem-headers, you will get
In file included from test.c:2:0:
/usr/include/sched.h:74:57: warning: "struct timespec" declared inside
parameter list will not be visible outside of this definition or declaration
extern int sched_rr_get_interval (__pid_t __pid, struct timespec *__t) __THROW;
^~~~~~~~
And if you want to _use_ sched_rr_get_interval in a TU compiled that
way, you're hosed.
This patch replaces all of that with small bits/types/TYPE.h headers
as introduced earlier. time.h and bits/time.h are now *much* simpler,
and a lot of other headers are slightly simpler.
* time/time.h, bits/time.h, sysdeps/unix/sysv/linux/bits/time.h:
Remove all logic conditional on __need macros. Move all the
conditionally defined types to their own headers...
* time/bits/types/clock_t.h: Define clock_t here.
* time/bits/types/clockid_t.h: Define clockid_t here.
* time/bits/types/struct_itimerspec.h: Define struct itimerspec here.
* time/bits/types/struct_timespec.h: Define struct timespec here.
* time/bits/types/struct_timeval.h: Define struct timeval here.
* time/bits/types/struct_tm.h: Define struct tm here.
* time/bits/types/time_t.h: Define time_t here.
* time/bits/types/timer_t.h: Define timer_t here.
* time/Makefile: Install the new headers.
* bits/resource.h, io/fcntl.h, io/sys/poll.h, io/sys/stat.h
* io/utime.h, misc/sys/select.h, posix/sched.h, posix/sys/times.h
* posix/sys/types.h, resolv/netdb.h, rt/aio.h, rt/mqueue.h
* signal/signal.h, pthread/semaphore.h, sysdeps/nptl/pthread.h
* sysdeps/unix/sysv/linux/alpha/bits/resource.h
* sysdeps/unix/sysv/linux/alpha/sys/acct.h
* sysdeps/unix/sysv/linux/bits/resource.h
* sysdeps/unix/sysv/linux/bits/timex.h
* sysdeps/unix/sysv/linux/mips/bits/resource.h
* sysdeps/unix/sysv/linux/net/ppp_defs.h
* sysdeps/unix/sysv/linux/sparc/bits/resource.h
* sysdeps/unix/sysv/linux/sys/acct.h
* sysdeps/unix/sysv/linux/sys/timerfd.h
* sysvipc/sys/msg.h, sysvipc/sys/sem.h, sysvipc/sys/shm.h
* time/sys/time.h, time/sys/timeb.h
Use the new bits/types headers.
* include/time.h: Remove __need logic.
* include/bits/time.h
* include/bits/types/clock_t.h, include/bits/types/clockid_t.h
* include/bits/types/time_t.h, include/bits/types/timer_t.h
* include/bits/types/struct_itimerspec.h
* include/bits/types/struct_timespec.h
* include/bits/types/struct_timeval.h
* include/bits/types/struct_tm.h:
New wrapper headers.
Diffstat (limited to 'sysdeps')
-rw-r--r-- | sysdeps/nptl/pthread.h | 1 | ||||
-rw-r--r-- | sysdeps/pthread/semaphore.h | 3 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/bits/resource.h | 3 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/alpha/sys/acct.h | 4 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/bits/resource.h | 3 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/bits/time.h | 68 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/bits/timex.h | 1 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/mips/bits/resource.h | 3 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/net/ppp_defs.h | 4 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sparc/bits/resource.h | 3 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sys/acct.h | 3 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/sys/timerfd.h | 1 |
12 files changed, 36 insertions, 61 deletions
diff --git a/sysdeps/nptl/pthread.h b/sysdeps/nptl/pthread.h index fd0894e..cc6517b 100644 --- a/sysdeps/nptl/pthread.h +++ b/sysdeps/nptl/pthread.h @@ -26,6 +26,7 @@ #include <bits/pthreadtypes.h> #include <bits/setjmp.h> #include <bits/wordsize.h> +#include <bits/types/struct_timespec.h> /* Detach state. */ diff --git a/sysdeps/pthread/semaphore.h b/sysdeps/pthread/semaphore.h index 9927db7..5508267 100644 --- a/sysdeps/pthread/semaphore.h +++ b/sysdeps/pthread/semaphore.h @@ -21,8 +21,7 @@ #include <features.h> #include <sys/types.h> #ifdef __USE_XOPEN2K -# define __need_timespec -# include <time.h> +# include <bits/types/struct_timespec.h> #endif /* Get the definition for sem_t. */ diff --git a/sysdeps/unix/sysv/linux/alpha/bits/resource.h b/sysdeps/unix/sysv/linux/alpha/bits/resource.h index fbc8f5a..1c17605 100644 --- a/sysdeps/unix/sysv/linux/alpha/bits/resource.h +++ b/sysdeps/unix/sysv/linux/alpha/bits/resource.h @@ -175,8 +175,7 @@ enum __rusage_who #endif }; -#define __need_timeval -#include <bits/time.h> /* For `struct timeval'. */ +#include <bits/types/struct_timeval.h> /* Structure which says how much of each resource has been used. */ struct rusage diff --git a/sysdeps/unix/sysv/linux/alpha/sys/acct.h b/sysdeps/unix/sysv/linux/alpha/sys/acct.h index 01da7bf..9fb9bdc 100644 --- a/sysdeps/unix/sysv/linux/alpha/sys/acct.h +++ b/sysdeps/unix/sysv/linux/alpha/sys/acct.h @@ -20,9 +20,7 @@ #define _SYS_ACCT_H 1 #include <features.h> -#define __need_time_t -#include <time.h> - +#include <bits/types/time_t.h> __BEGIN_DECLS diff --git a/sysdeps/unix/sysv/linux/bits/resource.h b/sysdeps/unix/sysv/linux/bits/resource.h index 8af0e0e..e2a62bc 100644 --- a/sysdeps/unix/sysv/linux/bits/resource.h +++ b/sysdeps/unix/sysv/linux/bits/resource.h @@ -175,8 +175,7 @@ enum __rusage_who #endif }; -#define __need_timeval -#include <bits/time.h> /* For `struct timeval'. */ +#include <bits/types/struct_timeval.h> /* Structure which says how much of each resource has been used. */ diff --git a/sysdeps/unix/sysv/linux/bits/time.h b/sysdeps/unix/sysv/linux/bits/time.h index 87eb51f..1fade54 100644 --- a/sysdeps/unix/sysv/linux/bits/time.h +++ b/sysdeps/unix/sysv/linux/bits/time.h @@ -20,24 +20,10 @@ * Never include this file directly; use <time.h> instead. */ -#if defined __need_timeval || defined __USE_GNU -# ifndef _STRUCT_TIMEVAL -# define _STRUCT_TIMEVAL 1 -# include <bits/types.h> +#ifndef _BITS_TIME_H +#define _BITS_TIME_H 1 -/* A time value that is accurate to the nearest - microsecond but also has a range of years. */ -struct timeval - { - __time_t tv_sec; /* Seconds. */ - __suseconds_t tv_usec; /* Microseconds. */ - }; -# endif /* struct timeval */ -#endif - -#ifndef __need_timeval -# ifndef _BITS_TIME_H -# define _BITS_TIME_H 1 +#include <bits/types.h> /* ISO/IEC 9899:1999 7.23.1: Components of time The macro `CLOCKS_PER_SEC' is an expression with type `clock_t' that is @@ -45,47 +31,46 @@ struct timeval /* CAE XSH, Issue 4, Version 2: <time.h> The value of CLOCKS_PER_SEC is required to be 1 million on all XSI-conformant systems. */ -# define CLOCKS_PER_SEC ((clock_t) 1000000) +#define CLOCKS_PER_SEC ((__clock_t) 1000000) -# if (!defined __STRICT_ANSI__ || defined __USE_POSIX) \ +#if (!defined __STRICT_ANSI__ || defined __USE_POSIX) \ && !defined __USE_XOPEN2K /* Even though CLOCKS_PER_SEC has such a strange value CLK_TCK presents the real value for clock ticks per second for the system. */ -# include <bits/types.h> extern long int __sysconf (int); -# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ -# endif +# define CLK_TCK ((__clock_t) __sysconf (2)) /* 2 is _SC_CLK_TCK */ +#endif -# ifdef __USE_POSIX199309 +#ifdef __USE_POSIX199309 /* Identifier for system-wide realtime clock. */ -# define CLOCK_REALTIME 0 +# define CLOCK_REALTIME 0 /* Monotonic system-wide clock. */ -# define CLOCK_MONOTONIC 1 +# define CLOCK_MONOTONIC 1 /* High-resolution timer from the CPU. */ -# define CLOCK_PROCESS_CPUTIME_ID 2 +# define CLOCK_PROCESS_CPUTIME_ID 2 /* Thread-specific CPU-time clock. */ -# define CLOCK_THREAD_CPUTIME_ID 3 +# define CLOCK_THREAD_CPUTIME_ID 3 /* Monotonic system-wide clock, not adjusted for frequency scaling. */ -# define CLOCK_MONOTONIC_RAW 4 +# define CLOCK_MONOTONIC_RAW 4 /* Identifier for system-wide realtime clock, updated only on ticks. */ -# define CLOCK_REALTIME_COARSE 5 +# define CLOCK_REALTIME_COARSE 5 /* Monotonic system-wide clock, updated only on ticks. */ -# define CLOCK_MONOTONIC_COARSE 6 +# define CLOCK_MONOTONIC_COARSE 6 /* Monotonic system-wide clock that includes time spent in suspension. */ -# define CLOCK_BOOTTIME 7 +# define CLOCK_BOOTTIME 7 /* Like CLOCK_REALTIME but also wakes suspended system. */ -# define CLOCK_REALTIME_ALARM 8 +# define CLOCK_REALTIME_ALARM 8 /* Like CLOCK_BOOTTIME but also wakes suspended system. */ -# define CLOCK_BOOTTIME_ALARM 9 +# define CLOCK_BOOTTIME_ALARM 9 /* Like CLOCK_REALTIME but in International Atomic Time. */ -# define CLOCK_TAI 11 +# define CLOCK_TAI 11 /* Flag to indicate time is absolute. */ -# define TIMER_ABSTIME 1 -# endif +# define TIMER_ABSTIME 1 +#endif -# ifdef __USE_GNU -# include <bits/timex.h> +#ifdef __USE_GNU +# include <bits/timex.h> __BEGIN_DECLS @@ -93,9 +78,6 @@ __BEGIN_DECLS extern int clock_adjtime (__clockid_t __clock_id, struct timex *__utx) __THROW; __END_DECLS -# endif /* use GNU */ - -# endif /* bits/time.h */ -#endif +#endif /* use GNU */ -#undef __need_timeval +#endif /* bits/time.h */ diff --git a/sysdeps/unix/sysv/linux/bits/timex.h b/sysdeps/unix/sysv/linux/bits/timex.h index 5eb7ccb..1bf6121 100644 --- a/sysdeps/unix/sysv/linux/bits/timex.h +++ b/sysdeps/unix/sysv/linux/bits/timex.h @@ -19,6 +19,7 @@ #define _BITS_TIMEX_H 1 #include <bits/types.h> +#include <bits/types/struct_timeval.h> /* These definitions from linux/timex.h as of 3.18. */ diff --git a/sysdeps/unix/sysv/linux/mips/bits/resource.h b/sysdeps/unix/sysv/linux/mips/bits/resource.h index 4ce5ff6..e3bcccf 100644 --- a/sysdeps/unix/sysv/linux/mips/bits/resource.h +++ b/sysdeps/unix/sysv/linux/mips/bits/resource.h @@ -183,8 +183,7 @@ enum __rusage_who #endif }; -#define __need_timeval -#include <bits/time.h> /* For `struct timeval'. */ +#include <bits/types/struct_timeval.h> /* Structure which says how much of each resource has been used. */ struct rusage diff --git a/sysdeps/unix/sysv/linux/net/ppp_defs.h b/sysdeps/unix/sysv/linux/net/ppp_defs.h index f8924c4..5e492e9 100644 --- a/sysdeps/unix/sysv/linux/net/ppp_defs.h +++ b/sysdeps/unix/sysv/linux/net/ppp_defs.h @@ -1,9 +1,7 @@ #ifndef _NET_PPP_DEFS_H #define _NET_PPP_DEFS_H 1 -#define __need_time_t -#include <time.h> - +#include <bits/types/time_t.h> #include <asm/types.h> #include <linux/ppp_defs.h> diff --git a/sysdeps/unix/sysv/linux/sparc/bits/resource.h b/sysdeps/unix/sysv/linux/sparc/bits/resource.h index 305ca5e..c5eac6f 100644 --- a/sysdeps/unix/sysv/linux/sparc/bits/resource.h +++ b/sysdeps/unix/sysv/linux/sparc/bits/resource.h @@ -191,8 +191,7 @@ enum __rusage_who #endif }; -#define __need_timeval -#include <bits/time.h> /* For `struct timeval'. */ +#include <bits/types/struct_timeval.h> /* Structure which says how much of each resource has been used. */ struct rusage diff --git a/sysdeps/unix/sysv/linux/sys/acct.h b/sysdeps/unix/sysv/linux/sys/acct.h index d24c2a7..bc8a08e 100644 --- a/sysdeps/unix/sysv/linux/sys/acct.h +++ b/sysdeps/unix/sysv/linux/sys/acct.h @@ -21,8 +21,7 @@ #include <sys/types.h> #include <stdint.h> #include <endian.h> -#define __need_time_t -#include <time.h> +#include <bits/types/time_t.h> __BEGIN_DECLS diff --git a/sysdeps/unix/sysv/linux/sys/timerfd.h b/sysdeps/unix/sysv/linux/sys/timerfd.h index d037213..492c488 100644 --- a/sysdeps/unix/sysv/linux/sys/timerfd.h +++ b/sysdeps/unix/sysv/linux/sys/timerfd.h @@ -19,6 +19,7 @@ #define _SYS_TIMERFD_H 1 #include <time.h> +#include <bits/types/struct_itimerspec.h> /* Get the platform-dependent flags. */ #include <bits/timerfd.h> |