diff options
| author | Manuel Novoa III <mjn3@codepoet.org> | 2002-07-15 16:26:52 +0000 |
|---|---|---|
| committer | Manuel Novoa III <mjn3@codepoet.org> | 2002-07-15 16:26:52 +0000 |
| commit | c96a844f5209ee078b282b1bec690f80f7411ada (patch) | |
| tree | 19cd4a0fb42b17fbcc34304ae4ffa5385dccbdfd /libc/sysdeps/linux/common/bits | |
| parent | 8431a6f2e2585bbeb9de72939dd423b9f6a1d418 (diff) | |
Clean up CLK_TCK situation. clock() and sysconf() now use an
arch-specific constant value defined in bits/uClibc_clk_tck.h.
Default is 100 (common/bits) but alpha uses 1024 following glibc.
Override per arch as necessary.
Diffstat (limited to 'libc/sysdeps/linux/common/bits')
| -rw-r--r-- | libc/sysdeps/linux/common/bits/time.h | 12 | ||||
| -rw-r--r-- | libc/sysdeps/linux/common/bits/uClibc_clk_tck.h | 8 |
2 files changed, 18 insertions, 2 deletions
diff --git a/libc/sysdeps/linux/common/bits/time.h b/libc/sysdeps/linux/common/bits/time.h index 2a6873f00..e551c23a4 100644 --- a/libc/sysdeps/linux/common/bits/time.h +++ b/libc/sysdeps/linux/common/bits/time.h @@ -33,17 +33,25 @@ XSI-conformant systems. */ # define CLOCKS_PER_SEC 1000000l +/* Get the arch-specific value of __UCLIBC_CLK_TCK_CONST used for CLK_TCK + * in sysconf() and clock(). */ +#include <bits/uClibc_clk_tck.h> + # if !defined __STRICT_ANSI__ && !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 */ +/* Note (uClibc): glibc #defines CLK_TCK as a sysconf() call. */ +# define CLK_TCK ((__clock_t) __UCLIBC_CLK_TCK_CONST) # endif # ifdef __USE_POSIX199309 /* Identifier for system-wide realtime clock. */ # define CLOCK_REALTIME 0 +/* High-resolution timer from the CPU. */ +# define CLOCK_PROCESS_CPUTIME_ID 2 +/* Thread-specific CPU-time clock. */ +# define CLOCK_THREAD_CPUTIME_ID 3 /* Flag to indicate time is absolute. */ # define TIMER_ABSTIME 1 diff --git a/libc/sysdeps/linux/common/bits/uClibc_clk_tck.h b/libc/sysdeps/linux/common/bits/uClibc_clk_tck.h new file mode 100644 index 000000000..00b77bfc8 --- /dev/null +++ b/libc/sysdeps/linux/common/bits/uClibc_clk_tck.h @@ -0,0 +1,8 @@ +/* Use a default of 100 for CLK_TCK to implement sysconf() and clock(). + * Override this by supplying an arch-specific version of this header file. + * + * WARNING: It is assumed that this is a constant integer value usable in + * preprocessor conditionals!!! + */ + +#define __UCLIBC_CLK_TCK_CONST 100 |