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Justine Tunney 2020-06-15 07:18:57 -07:00
commit c91b3c5006
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37
libc/runtime/sysconf.h Normal file
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#ifndef COSMOPOLITAN_LIBC_RUNTIME_SYSCONF_H_
#define COSMOPOLITAN_LIBC_RUNTIME_SYSCONF_H_
#include "libc/runtime/runtime.h"
#include "libc/sysv/consts/auxv.h"
#define _SC_ARG_MAX 0
#define _SC_CLK_TCK 2
#define _SC_PAGESIZE 30
#define _SC_PAGE_SIZE 30
#if !(__ASSEMBLER__ + __LINKER__ + 0)
COSMOPOLITAN_C_START_
long sysconf(int);
#define sysconf(X) __sysconf(X)
forceinline long __sysconf(int thing) {
switch (thing) {
case _SC_ARG_MAX:
return ARG_MAX;
case _SC_CLK_TCK: {
extern const long __AT_CLKTCK asm("AT_CLKTCK");
long res = getauxval(__AT_CLKTCK);
if (!res) res = 100;
return res;
}
case _SC_PAGESIZE:
return FRAMESIZE;
default:
return -1;
}
}
COSMOPOLITAN_C_END_
#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
#endif /* COSMOPOLITAN_LIBC_RUNTIME_SYSCONF_H_ */