c5b309ff07
Main changes: - COW optimization for safecopy. - safemap, a grant-based interface for sharing memory regions between processes. - Integration with safemap and complete rework of DS, supporting new data types natively (labels, memory ranges, memory mapped ranges). - For further information: http://wiki.minix3.org/en/SummerOfCode2009/MemoryGrants Additional changes not included in the original Wu's branch: - Fixed unhandled case in VM when using COW optimization for safecopy in case of a block that has already been shared as SMAP. - Better interface and naming scheme for sys_saferevmap and ds_retrieve_map calls. - Better input checking in syslib: check for page alignment when creating memory mapping grants. - DS notifies subscribers when an entry is deleted. - Documented the behavior of indirect grants in case of memory mapping. - Test suite in /usr/src/test/safeperf|safecopy|safemap|ds/* reworked and extended. - Minor fixes and general cleanup. - TO-DO: Grant ids should be generated and managed the way endpoints are to make sure grant slots are never misreused.
93 lines
3.5 KiB
C
93 lines
3.5 KiB
C
#ifndef _MINIX_SYSUTIL_H
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#define _MINIX_SYSUTIL_H 1
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#include <minix/ipc.h>
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/* Extra system library definitions to support device drivers and servers.
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*
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* Created:
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* Mar 15, 2004 by Jorrit N. Herder
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*
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* Changes:
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* May 31, 2005: added printf, kputc (relocated from syslib)
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* May 31, 2005: added getuptime
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* Mar 18, 2005: added tickdelay
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* Oct 01, 2004: added env_parse, env_prefix, env_panic
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* Jul 13, 2004: added fkey_ctl
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* Apr 28, 2004: added report, panic
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* Mar 31, 2004: setup like other libraries, such as syslib
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*/
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/*==========================================================================*
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* Miscellaneous helper functions.
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*==========================================================================*/
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/* Environment parsing return values. */
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#define EP_BUF_SIZE 128 /* local buffer for env value */
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#define EP_UNSET 0 /* variable not set */
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#define EP_OFF 1 /* var = off */
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#define EP_ON 2 /* var = on (or field left blank) */
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#define EP_SET 3 /* var = 1:2:3 (nonblank field) */
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#define EP_EGETKENV 4 /* sys_getkenv() failed ... */
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_PROTOTYPE( void env_setargs, (int argc, char *argv[]) );
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_PROTOTYPE( int env_get_param, (char *key, char *value, int max_size) );
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_PROTOTYPE( int env_prefix, (char *env, char *prefix) );
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_PROTOTYPE( void env_panic, (char *key) );
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_PROTOTYPE( int env_parse, (char *env, char *fmt, int field, long *param,
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long min, long max) );
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#define fkey_map(fkeys, sfkeys) fkey_ctl(FKEY_MAP, (fkeys), (sfkeys))
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#define fkey_unmap(fkeys, sfkeys) fkey_ctl(FKEY_UNMAP, (fkeys), (sfkeys))
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#define fkey_events(fkeys, sfkeys) fkey_ctl(FKEY_EVENTS, (fkeys), (sfkeys))
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_PROTOTYPE( int fkey_ctl, (int req, int *fkeys, int *sfkeys) );
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_PROTOTYPE( int printf, (const char *fmt, ...));
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_PROTOTYPE( void kputc, (int c));
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_PROTOTYPE( void report, (char *who, char *mess, int num));
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_PROTOTYPE( void panic, (char *who, char *mess, int num));
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_PROTOTYPE( int getuptime, (clock_t *ticks));
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_PROTOTYPE( int getuptime2, (clock_t *ticks, time_t *boottime));
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_PROTOTYPE( int tickdelay, (clock_t ticks));
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_PROTOTYPE( int tsc_calibrate, (void));
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_PROTOTYPE( u32_t sys_hz, (void));
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_PROTOTYPE( double getidle, (void));
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_PROTOTYPE( void util_stacktrace, (void));
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_PROTOTYPE( void util_nstrcat, (char *str, unsigned long n) );
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_PROTOTYPE( void util_stacktrace_strcat, (char *));
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_PROTOTYPE( int micro_delay, (u32_t micros));
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_PROTOTYPE( u32_t tsc_64_to_micros, (u64_t tsc));
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_PROTOTYPE( u32_t tsc_to_micros, (u32_t low, u32_t high));
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_PROTOTYPE( u32_t micros_to_ticks, (u32_t micros));
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_PROTOTYPE( void ser_putc, (char c));
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_PROTOTYPE( void get_randomness, (struct k_randomness *, int));
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#define asynsend(ep, msg) asynsend3(ep, msg, 0)
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_PROTOTYPE( int asynsend3, (endpoint_t ep, message *msg, int flags));
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#define ASSERT(c) if(!(c)) { panic(__FILE__, "assert " #c " failed at line", __LINE__); }
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/* timing library */
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#define TIMING_CATEGORIES 20
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#define TIMING_POINTS 20 /* timing resolution */
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#define TIMING_CATEGORIES 20
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#define TIMING_NAME 10
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struct util_timingdata {
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char names[TIMING_NAME];
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unsigned long lock_timings[TIMING_POINTS];
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unsigned long lock_timings_range[2];
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unsigned long binsize, resets, misses, measurements;
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unsigned long starttimes[2]; /* nonzero if running */
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};
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typedef struct util_timingdata util_timingdata_t;
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/* read_tsc() and friends. */
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_PROTOTYPE( void read_tsc_64, (u64_t *t) );
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_PROTOTYPE( void read_tsc, (u32_t *hi, u32_t *lo) );
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#endif /* _MINIX_SYSUTIL_H */
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