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libc/time: Add an implementationof clock()

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Gregory Nutt
2018-03-13 08:07:03 -06:00
parent f62bfca94e
commit 1a990f99d1
11 changed files with 100 additions and 21 deletions
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include/sys/types.h
+5 -1
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@@ -231,9 +231,13 @@ typedef int16_t blksize_t;
typedef unsigned int socklen_t;
typedef uint16_t sa_family_t;
/* Used for system times in clock ticks */
/* Used for system times in clock ticks (equivalent to systime_t) */
#ifdef CONFIG_SYSTEM_TIME64
typedef uint64_t clock_t;
#else
typedef uint32_t clock_t;
#endif
/* The type useconds_t shall be an unsigned integer type capable of storing
* values at least in the range [0, 1000000]. The type suseconds_t shall be
libc/time/Make.defs
+3 -2
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@@ -1,7 +1,8 @@
############################################################################
# libc/time/Make.defs
#
# Copyright (C) 2011-2012, 2014-2015 Gregory Nutt. All rights reserved.
# Copyright (C) 2011-2012, 2014-2015, 2018 Gregory Nutt. All rights
# reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@@ -37,7 +38,7 @@
CSRCS += lib_strftime.c lib_calendar2utc.c lib_daysbeforemonth.c
CSRCS += lib_gettimeofday.c lib_isleapyear.c lib_settimeofday.c lib_time.c
CSRCS += lib_difftime.c
CSRCS += lib_difftime.c lib_clock.c
ifndef CONFIG_DISABLE_SIGNALS
CSRCS += lib_nanosleep.c
libc/time/lib_asctime.c
+1 -1
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@@ -55,7 +55,7 @@
* string representation. asctime is not re-entrant; asctime_r is re-
* entrant
*
* Parameters:
* Input Parameters:
* tp - Pointer to the time to be converted.
*
* Returned Value:
libc/time/lib_asctimer.c
+1 -1
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@@ -74,7 +74,7 @@ static const char * const g_mon_name[12] =
* string representation. asctime is not re-entrant; asctime_r is re-
* entrant.
*
* Parameters:
* Input Parameters:
* tp - Pointer to the time to be converted.
* buf - A user provided buffer to receive the 26 character time string.
*
libc/time/lib_clock.c
+74
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@@ -0,0 +1,74 @@
/****************************************************************************
* libc/time/lib_clock.c
*
* Copyright (C) 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <time.h>
#include <nuttx/clock.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: clock
*
* Description:
* The clock() function returns the implementation's best approximation to
* the processor time used by the process since the beginning of a
* implementation-defined era related only to the process invocation.
*
* To determine the time in seconds, the value returned by clock() should
* be divided by the value of the macro CLOCKS_PER_SEC as defined in <time.h>.
*
* Input Parameters:
* None
*
* Returned Value:
* The system time in units of clock ticks is returend. If the processor
* time used is not available or its value cannot be represented, the
* function will return the value (clock_t)-1.
*
****************************************************************************/
clock_t clock(void)
{
return (clock_t)clock_systimer();
}
libc/time/lib_ctime.c
+1 -1
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@@ -55,7 +55,7 @@
* epoch to a string representation. ctime is not re-entrant; ctime_r is
* re-entrant.
*
* Parameters:
* Input Parameters:
* timep - The current time represented as seconds since the epoch.
*
* Returned Value:
libc/time/lib_ctimer.c
+1 -1
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@@ -59,7 +59,7 @@
* epoch to a string representation. ctime is not re-entrant; ctime_r is
* re-entrant.
*
* Parameters:
* Input Parameters:
* timep - The current time represented as seconds since the epoch.
* buf - A user provided buffer to receive the 26 character time string.
*
libc/time/lib_nanosleep.c
+1 -1
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@@ -63,7 +63,7 @@
* The use of the nanosleep() function has no effect on the action or
* blockage of any signal.
*
* Parameters:
* Input Parameters:
* rqtp - The amount of time to be suspended from execution.
* rmtp - If the rmtp argument is non-NULL, the timespec structure
* referenced by it is updated to contain the amount of time
libc/time/lib_time.c
+1 -1
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@@ -57,7 +57,7 @@
* and is provided for compatibility. clock_gettime() is the preferred way
* to obtain system time.
*
* Parameters:
* Input Parameters:
* Pointer to an object of type time_t, where the time value is stored.
* Alternatively, this parameter can be a null pointer, in which case the
* parameter is not used, but a time_t object is still returned by the
net/socket/getsockopt.c
+7 -7
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@@ -136,15 +136,15 @@ static int psock_socketlevel_option(FAR struct socket *psock, int option,
* is outside of the scope of getsockopt.
*/
case SO_DEBUG: /* Enables recording of debugging information */
case SO_BROADCAST: /* Permits sending of broadcast messages */
case SO_REUSEADDR: /* Allow reuse of local addresses */
case SO_DEBUG: /* Enables recording of debugging information */
case SO_DONTROUTE: /* Requests outgoing messages bypass standard routing */
#ifndef CONFIG_NET_TCPPROTO_OPTIONS
case SO_KEEPALIVE: /* Verifies TCP connections active by enabling the
* periodic transmission of probes */
#endif
case SO_OOBINLINE: /* Leaves received out-of-band data inline */
case SO_DONTROUTE: /* Requests outgoing messages bypass standard routing */
case SO_REUSEADDR: /* Allow reuse of local addresses */
{
sockopt_t optionset;
@@ -254,14 +254,14 @@ static int psock_socketlevel_option(FAR struct socket *psock, int option,
}
break;
/* The following are not yet implemented */
/* The following are not yet implemented (return values other than {0,1) */
case SO_ACCEPTCONN: /* Reports whether socket listening is enabled */
case SO_LINGER:
case SO_SNDBUF: /* Sets send buffer size */
case SO_RCVBUF: /* Sets receive buffer size */
case SO_ERROR: /* Reports and clears error status. */
case SO_LINGER: /* Lingers on a close() if data is present */
case SO_RCVBUF: /* Sets receive buffer size */
case SO_RCVLOWAT: /* Sets the minimum number of bytes to input */
case SO_SNDBUF: /* Sets send buffer size */
case SO_SNDLOWAT: /* Sets the minimum number of bytes to output */
default:
net/socket/setsockopt.c
+5 -5
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@@ -129,15 +129,15 @@ static int psock_socketlevel_option(FAR struct socket *psock, int option,
* is outside of the scope of setsockopt.
*/
case SO_DEBUG: /* Enables recording of debugging information */
case SO_BROADCAST: /* Permits sending of broadcast messages */
case SO_REUSEADDR: /* Allow reuse of local addresses */
case SO_DEBUG: /* Enables recording of debugging information */
case SO_DONTROUTE: /* Requests outgoing messages bypass standard routing */
#ifndef CONFIG_NET_TCPPROTO_OPTIONS
case SO_KEEPALIVE: /* Verifies TCP connections active by enabling the
* periodic transmission of probes */
#endif
case SO_OOBINLINE: /* Leaves received out-of-band data inline */
case SO_DONTROUTE: /* Requests outgoing messages bypass standard routing */
case SO_REUSEADDR: /* Allow reuse of local addresses */
{
int setting;
@@ -236,7 +236,7 @@ static int psock_socketlevel_option(FAR struct socket *psock, int option,
break;
#ifdef CONFIG_NET_SOLINGER
case SO_LINGER:
case SO_LINGER: /* Lingers on a close() if data is present */
{
FAR struct linger *setting;
@@ -276,9 +276,9 @@ static int psock_socketlevel_option(FAR struct socket *psock, int option,
#endif
/* The following are not yet implemented */
case SO_SNDBUF: /* Sets send buffer size */
case SO_RCVBUF: /* Sets receive buffer size */
case SO_RCVLOWAT: /* Sets the minimum number of bytes to input */
case SO_SNDBUF: /* Sets send buffer size */
case SO_SNDLOWAT: /* Sets the minimum number of bytes to output */
/* There options are only valid when used with getopt */