huxi
49 lines
1.3 KiB
C
49 lines
1.3 KiB
C
#ifndef JIFFIES_H
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#define JIFFIES_H
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/* timer interface */
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/* Parameters used to convert the timespec values: */
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#define HZ 100L
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#define MSEC_PER_SEC 1000L
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#define USEC_PER_MSEC 1000L
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#define NSEC_PER_USEC 1000L
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#define NSEC_PER_MSEC 1000000L
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#define USEC_PER_SEC 1000000L
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#define NSEC_PER_SEC 1000000000L
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#define FSEC_PER_SEC 1000000000000000LL
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#ifndef __ASSEMBLY__
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extern volatile unsigned long jiffies;
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extern unsigned long jiffies_msec();
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extern unsigned long jiffies_offset2msec(unsigned long begin_msec, int offset_msec);
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extern int jiffies_msec2offset(unsigned long begin_msec, unsigned long end_msec);
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extern unsigned long jiffies_usec();
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extern unsigned long jiffies_offset2usec(unsigned long base_usec, int offset_usec);
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extern int jiffies_usec2offset(unsigned long begin, unsigned long end);
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extern unsigned long audio_jiffies_usec(void);
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#endif
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#define time_after(a,b) ((long)(b) - (long)(a) < 0)
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#define time_before(a,b) time_after(b,a)
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#define msecs_to_jiffies(msec) ((msec)/10)
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#define jiffies_to_msecs(j) ((j)*10)
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static inline int jiffies_offset_to_msec(unsigned long begin, unsigned long end)
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{
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int offset = end - begin;
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if (offset < 0 && time_after(end, begin)) {
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offset += 0xffffffff;
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}
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return jiffies_to_msecs(offset);
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}
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#endif
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