Support for setitimer(ITIMER_VIRTUAL/ITIMER_PROF). New test (41) for setitimer.

include/minix/com.h

@@ -328,7 +328,9 @@
 #  define SYS_VMCTL	(KERNEL_CALL + 43)	/* sys_vmctl() */
 #  define SYS_SYSCTL	(KERNEL_CALL + 44)	/* sys_sysctl() */
 
-#define NR_SYS_CALLS	45	/* number of system calls */ 
+#  define SYS_VTIMER     (KERNEL_CALL + 45)	/* sys_vtimer() */
+
+#define NR_SYS_CALLS	46	/* number of system calls */ 
 
 /* Pseudo call for use in kernel/table.c. */
 #define SYS_ALL_CALLS (NR_SYS_CALLS)
@@ -604,6 +606,14 @@
 #define VMCTL_INCSP		16
 #define VMCTL_NOPAGEZERO	18
 
+/* Field names for SYS_VTIMER. */
+#define VT_WHICH	m2_i1	/* which timer to set/retrieve */
+#  define VT_VIRTUAL        1	/* the ITIMER_VIRTUAL timer */
+#  define VT_PROF           2	/* the ITIMER_PROF timer */
+#define VT_SET		m2_i2	/* 1 for setting a timer, 0 retrieval only */
+#define VT_VALUE	m2_l1	/* new/previous value of the timer */
+#define VT_ENDPT	m2_l2	/* process to set/retrieve the timer for */
+
 /*===========================================================================*
  *                Messages for the Reincarnation Server 		     *
  *===========================================================================*/

include/minix/syslib.h

@@ -86,10 +86,14 @@ _PROTOTYPE(void *alloc_contig, (size_t len, int flags, phys_bytes *phys));
 #define AC_LOWER16M	0x02
 #define AC_ALIGN64K	0x04
 
-/* Clock functionality: get system times or (un)schedule an alarm call. */
+/* Clock functionality: get system times, (un)schedule an alarm call, or
+ * retrieve/set a process-virtual timer.
+ */
 _PROTOTYPE( int sys_times, (endpoint_t proc_nr, clock_t *user_time,
 	clock_t *sys_time, clock_t *uptime));
 _PROTOTYPE(int sys_setalarm, (clock_t exp_time, int abs_time));
+_PROTOTYPE( int sys_vtimer, (endpoint_t proc_nr, int which, clock_t *newval,
+	clock_t *oldval));
 
 /* Shorthands for sys_irqctl() system call. */
 #define sys_irqdisable(hook_id) \

include/signal.h

@@ -44,6 +44,8 @@ typedef unsigned long sigset_t;
 #define SIGEMT		  16	/* EMT instruction */
 #define SIGCHLD           17	/* child process terminated or stopped */
 #define SIGWINCH    	  21	/* window size has changed */
+#define SIGVTALRM         24	/* virtual alarm */
+#define SIGPROF           25	/* profiler alarm */
 
 /* POSIX requires the following signals to be defined, even if they are
  * not supported.  Here are the definitions, but they are not supported.
@@ -54,7 +56,7 @@ typedef unsigned long sigset_t;
 #define SIGTTIN           22	/* background process wants to read */
 #define SIGTTOU           23	/* background process wants to write */
 
-#define _NSIG             24	/* highest signal number plus one */
+#define _NSIG             26	/* highest signal number plus one */
 
 #ifdef _MINIX
 #define SIGIOT             SIGABRT /* for people who speak PDP-11 */