sched/clock: move clock_getcpuclockid() and clock_getres() to libc

Signed-off-by: Petro Karashchenko <petro.karashchenko@gmail.com>

include/sys/syscall_lookup.h

@@ -170,8 +170,6 @@ SYSCALL_LOOKUP(clock_nanosleep,            4)
  */
 
 SYSCALL_LOOKUP(clock,                      0)
-SYSCALL_LOOKUP(clock_getcpuclockid,        2)
-SYSCALL_LOOKUP(clock_getres,               2)
 SYSCALL_LOOKUP(clock_gettime,              2)
 SYSCALL_LOOKUP(clock_settime,              2)
 #ifdef CONFIG_CLOCK_TIMEKEEPING

libs/libc/libc.csv

@@ -33,7 +33,8 @@
 "cfgetspeed","termios.h","","speed_t","FAR const struct termios *"
 "cfsetspeed","termios.h","","int","FAR struct termios *","speed_t"
 "chdir","unistd.h","!defined(CONFIG_DISABLE_ENVIRON)","int","FAR const char *"
-"clock","time.h","","clock_t"
+"clock_getcpuclockid","time.h","","int","pid_t","FAR clockid_t *"
+"clock_getres","time.h","","int","clockid_t","FAR struct timespec *"
 "closedir","dirent.h","","int","DIR *"
 "crc32","nuttx/crc32.h","","uint32_t","FAR const uint8_t *","size_t"
 "crc32part","nuttx/crc32.h","","uint32_t","FAR const uint8_t *","size_t","uint32_t"

libs/libc/sched/Make.defs

@@ -23,6 +23,7 @@
 CSRCS += sched_getprioritymax.c sched_getprioritymin.c
 CSRCS += clock_ticks2time.c clock_time2ticks.c
 CSRCS += clock_timespec_add.c clock_timespec_subtract.c
+CSRCS += clock_getcpuclockid.c clock_getres.c
 
 ifneq ($(CONFIG_CANCELLATION_POINTS),y)
 CSRCS += task_setcanceltype.c task_testcancel.c

libs/libc/sched/clock_getcpuclockid.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * sched/clock/clock_getcpuclockid.c
+ * libs/libc/sched/clock_getcpuclockid.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -25,10 +25,10 @@
 #include <nuttx/config.h>
 
 #include <time.h>
-#include <errno.h>
-#include <unistd.h>
 
-#include "clock/clock.h"
+#include <nuttx/clock.h>
+#include <nuttx/sched.h>
+#include <nuttx/signal.h>
 
 /****************************************************************************
  * Public Functions
@@ -52,17 +52,15 @@
 
 int clock_getcpuclockid(pid_t pid, FAR clockid_t *clockid)
 {
-  if (pid < 0)
-    {
-      set_errno(EINVAL);
-      return ERROR;
-    }
-
   /* If the pid is 0, we need to use the pid of current process */
 
   if (pid == 0)
     {
-      pid = getpid();
+      pid = _SCHED_GETPID();
+    }
+  else if (_SIG_KILL(pid, 0) < 0)
+    {
+      return ERROR;
     }
 
   /* For clock_getcpuclockid, the clock type are

libs/libc/sched/clock_getres.c

@@ -1,5 +1,5 @@
 /****************************************************************************
- * sched/clock/clock_getres.c
+ * libs/libc/sched/clock_getres.c
  *
  * Licensed to the Apache Software Foundation (ASF) under one or more
  * contributor license agreements.  See the NOTICE file distributed with
@@ -29,7 +29,7 @@
 #include <errno.h>
 #include <debug.h>
 
-#include "clock/clock.h"
+#include <nuttx/clock.h>
 
 /****************************************************************************
  * Public Functions

sched/clock/Make.defs

@@ -18,10 +18,8 @@
 #
 ############################################################################
 
-CSRCS += clock_initialize.c clock_settime.c clock_gettime.c clock_getres.c
-CSRCS += clock_abstime2ticks.c
-CSRCS += clock_systime_ticks.c clock_systime_timespec.c
-CSRCS += clock.c clock_getcpuclockid.c
+CSRCS += clock.c clock_initialize.c clock_settime.c clock_gettime.c
+CSRCS += clock_abstime2ticks.c clock_systime_ticks.c clock_systime_timespec.c
 
 ifeq ($(CONFIG_CLOCK_TIMEKEEPING),y)
 CSRCS += clock_timekeeping.c

syscall/syscall.csv

@@ -13,8 +13,6 @@
 "chown","unistd.h","","int","FAR const char *","uid_t","gid_t"
 "clearenv","stdlib.h","!defined(CONFIG_DISABLE_ENVIRON)","int"
 "clock","time.h","","clock_t"
-"clock_getcpuclockid","time.h","","int","pid_t","FAR clockid_t *"
-"clock_getres","time.h","","int","clockid_t","FAR struct timespec *"
 "clock_gettime","time.h","","int","clockid_t","FAR struct timespec *"
 "clock_nanosleep","time.h","","int","clockid_t","int","FAR const struct timespec *", "FAR struct timespec *"
 "clock_settime","time.h","","int","clockid_t","const struct timespec*"