1 #ifndef _MINIX_SYSUTIL_H 2 #define _MINIX_SYSUTIL_H 1 3 4 #include <minix/ipc.h> 5 #include <sys/cdefs.h> 6 7 /* Extra system library definitions to support device drivers and servers. 8 * 9 * Created: 10 * Mar 15, 2004 by Jorrit N. Herder 11 * 12 * Changes: 13 * May 31, 2005: added printf, kputc (relocated from syslib) 14 * May 31, 2005: added getuptime 15 * Mar 18, 2005: added tickdelay 16 * Oct 01, 2004: added env_parse, env_panic 17 * Jul 13, 2004: added fkey_ctl 18 * Apr 28, 2004: added report, panic 19 * Mar 31, 2004: setup like other libraries, such as syslib 20 */ 21 22 /*==========================================================================* 23 * Miscellaneous helper functions. 24 *==========================================================================*/ 25 26 /* Environment parsing return values. */ 27 #define EP_BUF_SIZE 128 /* local buffer for env value */ 28 #define EP_UNSET 0 /* variable not set */ 29 #define EP_OFF 1 /* var = off */ 30 #define EP_ON 2 /* var = on (or field left blank) */ 31 #define EP_SET 3 /* var = 1:2:3 (nonblank field) */ 32 #define EP_EGETKENV 4 /* sys_getkenv() failed ... */ 33 34 extern int env_argc; 35 extern char **env_argv; 36 37 void env_setargs(int argc, char *argv[]); 38 int env_get_param(const char *key, char *value, int max_size); 39 void __dead env_panic(const char *key); 40 int env_parse(const char *env, const char *fmt, int field, 41 long *param, long min, long max); 42 43 #define fkey_map(fkeys, sfkeys) fkey_ctl(FKEY_MAP, (fkeys), (sfkeys)) 44 #define fkey_unmap(fkeys, sfkeys) fkey_ctl(FKEY_UNMAP, (fkeys), (sfkeys)) 45 #define fkey_events(fkeys, sfkeys) fkey_ctl(FKEY_EVENTS, (fkeys), (sfkeys)) 46 int fkey_ctl(int req, int *fkeys, int *sfkeys); 47 48 struct timespec; 49 50 int printf(const char *fmt, ...); 51 void kputc(int c); 52 __dead void panic(const char *fmt, ...) 53 __attribute__((__format__(__printf__,1,2))); 54 void panic_hook(void); 55 void __panic_hook(void); 56 int getuptime(clock_t *ticks, clock_t *realtime, time_t *boottime); 57 clock_t getticks(void); 58 int tickdelay(clock_t ticks); 59 int tsc_calibrate(void); 60 u32_t sys_hz(void); 61 double getidle(void); 62 void util_stacktrace(void); 63 int micro_delay(u32_t micros); 64 u32_t tsc_64_to_micros(u64_t tsc); 65 u32_t tsc_to_micros(u32_t low, u32_t high); 66 u32_t tsc_get_khz(void); 67 u32_t micros_to_ticks(u32_t micros); 68 time_t clock_time(struct timespec *tv); 69 #if defined(__arm__) 70 void read_frclock(u32_t *frclk); 71 u32_t delta_frclock(u32_t base, u32_t cur); 72 #endif 73 void read_frclock_64(u64_t *frclk); 74 u64_t delta_frclock_64(u64_t base, u64_t cur); 75 u32_t frclock_64_to_micros(u64_t tsc); 76 void ser_putc(char c); 77 void get_randomness(struct k_randomness *, int); 78 u32_t sqrt_approx(u32_t); 79 80 int stime(time_t *_top); 81 82 void cpuavg_init(struct cpuavg *); 83 void cpuavg_increment(struct cpuavg *, clock_t, clock_t); 84 uint32_t cpuavg_getstats(const struct cpuavg *, uint32_t *, uint32_t *, 85 clock_t, clock_t); 86 uint32_t cpuavg_getccpu(void); 87 88 #define asynsend(ep, msg) asynsend3(ep, msg, 0) 89 int asynsend3(endpoint_t ep, message *msg, int flags); 90 int asyn_geterror(endpoint_t *dst, message *msg, int *err); 91 int senda_reload(void); 92 93 #define ASSERT(c) if(!(c)) { panic("%s:%d: assert %s failed", __FILE__, __LINE__, #c); } 94 95 /* timing library */ 96 #define TIMING_CATEGORIES 20 97 98 #define TIMING_POINTS 20 /* timing resolution */ 99 #define TIMING_CATEGORIES 20 100 #define TIMING_NAME 10 101 102 struct util_timingdata { 103 char names[TIMING_NAME]; 104 unsigned long lock_timings[TIMING_POINTS]; 105 unsigned long lock_timings_range[2]; 106 unsigned long binsize, resets, misses, measurements; 107 unsigned long starttimes[2]; /* nonzero if running */ 108 }; 109 110 typedef struct util_timingdata util_timingdata_t; 111 112 /* GCOV support (not always compiled in) */ 113 int gcov_flush(endpoint_t endpt, cp_grant_id_t grant, size_t bufsize); 114 115 #endif /* _MINIX_SYSUTIL_H */ 116 117