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amiro-os / core / src / aos_system.c @ 960338cc

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/*
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AMiRo-OS is an operating system designed for the Autonomous Mini Robot (AMiRo) platform.
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Copyright (C) 2016..2018  Thomas Schöpping et al.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program.  If not, see <http://www.gnu.org/licenses/>.
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*/
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/**
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 * @file    aos_system.c
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 * @brief   System code.
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 * @details Contains system initialization and shutdown routines
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 *          and system shell commands.
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 *
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 * @addtogroup aos_system
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 * @{
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 */
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#include <aos_system.h>
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#include <amiroos.h>
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#include <amiroblt.h>
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#include <module.h>
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#include <string.h>
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#include <stdlib.h>
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#if (AMIROOS_CFG_TESTS_ENABLE == true)
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#include <ch_test.h>
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#include <rt_test_root.h>
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#endif
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/**
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 * @brief   Period of the system timer.
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 */
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#define SYSTIMER_PERIOD               (TIME_MAX_SYSTIME - CH_CFG_ST_TIMEDELTA)
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/**
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 * @brief   Width of the printable system info text.
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 */
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#define SYSTEM_INFO_WIDTH             70
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/**
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 * @brief   Width of the name column of the system info table.
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 */
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#define SYSTEM_INFO_NAMEWIDTH         14
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/* forward declarations */
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static void _printSystemInfo(BaseSequentialStream* stream);
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#if (AMIROOS_CFG_SHELL_ENABLE == true)
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static int _shellcmd_configcb(BaseSequentialStream* stream, int argc, char* argv[]);
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static int _shellcmd_infocb(BaseSequentialStream* stream, int argc, char* argv[]);
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static int _shellcmd_shutdowncb(BaseSequentialStream* stream, int argc, char* argv[]);
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#if (AMIROOS_CFG_TESTS_ENABLE == true)
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static int _shellcmd_kerneltestcb(BaseSequentialStream* stream, int argc, char* argv[]);
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#endif /* AMIROOS_CFG_TESTS_ENABLE == true */
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#endif /* AMIROOS_CFG_SHELL_ENABLE == true */
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/**
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 * @brief   Timer to accumulate system uptime.
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 */
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static virtual_timer_t _systimer;
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/**
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 * @brief   Accumulated system uptime.
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 */
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static aos_timestamp_t _uptime;
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/**
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 * @brief   Timer register value of last accumulation.
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 */
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static systime_t _synctime;
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#if (AMIROOS_CFG_SSSP_ENABLE == true)
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#if (AMIROOS_CFG_SSSP_MASTER == true) || defined(__DOXYGEN__)
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/**
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 * @brief   Timer to drive the SYS_SYNC signal for system wide time synchronization according to SSSP.
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 */
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static virtual_timer_t _syssynctimer;
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#endif
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/**
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 * @brief   Last uptime of system wide time synchronization.
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 */
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static aos_timestamp_t _syssynctime;
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#endif
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#if (AMIROOS_CFG_SSSP_ENABLE == true)
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#if ((AMIROOS_CFG_SSSP_MASTER != true) && (AMIROOS_CFG_PROFILE == true)) || defined(__DOXYGEN__)
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/**
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 * @brief   Offset between local clock and system wide synchronization signal.
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 */
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static float _syssyncskew;
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/**
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 * @brief   Weighting factor for the low-pass filter used for calculating the @p _syssyncskew value.
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 */
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#define SYSTEM_SYSSYNCSKEW_LPFACTOR   (0.1f / AOS_SYSTEM_TIME_RESOLUTION)
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#endif
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#endif
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#if (AMIROOS_CFG_SHELL_ENABLE == true) || defined(__DOXYGEN__)
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/**
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 * @brief   Shell thread working area.
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 */
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THD_WORKING_AREA(_shell_wa, AMIROOS_CFG_SHELL_STACKSIZE);
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/**
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 * @brief   Shell input buffer.
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 */
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static char _shell_line[AMIROOS_CFG_SHELL_LINEWIDTH];
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/**
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 * @brief   Shell argument buffer.
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 */
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static char* _shell_arglist[AMIROOS_CFG_SHELL_MAXARGS];
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/**
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 * @brief   Shell command to retrieve system information.
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 */
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static aos_shellcommand_t _shellcmd_info = {
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  /* name     */ "module:info",
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  /* callback */ _shellcmd_infocb,
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  /* next     */ NULL,
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};
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/**
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 * @brief   Shell command to set or retrieve system configuration.
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 */
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static aos_shellcommand_t _shellcmd_config = {
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  /* name     */ "module:config",
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  /* callback */ _shellcmd_configcb,
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  /* next     */ NULL,
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};
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/**
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 * @brief   Shell command to shutdown the system.
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 */
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static aos_shellcommand_t _shellcmd_shutdown = {
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  /* name     */ "system:shutdown",
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  /* callback */ _shellcmd_shutdowncb,
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  /* next     */ NULL,
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};
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#endif /* AMIROOS_CFG_SHELL_ENABLE == true */
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#if (AMIROOS_CFG_TESTS_ENABLE == true) || defined(__DOXYGEN__)
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/**
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 * @brief   Shell kommand to run a test of the ChibiOS/RT kernel.
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 */
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static aos_shellcommand_t _shellcmd_kerneltest = {
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  /* name     */ "kernel:test",
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  /* callback */ _shellcmd_kerneltestcb,
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  /* next     */ NULL,
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};
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#endif /* AMIROOS_CFG_TESTS_ENABLE == true */
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/**
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 * @brief   Global system object.
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 */
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aos_system_t aos;
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/**
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 * @brief   Print a separator line.
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 *
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 * @param[in] stream    Stream to print to or NULL to print to all system streams.
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 * @param[in] c         Character to use.
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 * @param[in] n         Length of the separator line.
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 *
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 * @return  Number of characters printed.
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 */
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static unsigned int _printSystemInfoSeparator(BaseSequentialStream* stream, const char c, const unsigned int n)
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{
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  aosDbgCheck(stream != NULL);
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  // print the specified character n times
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  for (unsigned int i = 0; i < n; ++i) {
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    streamPut(stream, c);
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  }
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  streamPut(stream, '\n');
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  return n+1;
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}
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/**
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 * @brief   Print a system information line.
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 * @details Prints a system information line with the following format:
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 *            "<name>[spaces]fmt"
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 *          The combined width of "<name>[spaces]" can be specified in order to align <fmt> on multiple lines.
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 *          Note that there is not trailing newline added implicitely.
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 *
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 * @param[in] stream      Stream to print to or NULL to print to all system streams.
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 * @param[in] name        Name of the entry/line.
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 * @param[in] namewidth   Width of the name column.
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 * @param[in] fmt         Formatted string of information content.
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 *
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 * @return  Number of characters printed.
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 */
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static unsigned int _printSystemInfoLine(BaseSequentialStream* stream, const char* name, const unsigned int namewidth, const char* fmt, ...)
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{
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  aosDbgCheck(stream != NULL);
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  aosDbgCheck(name != NULL);
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  unsigned int n = 0;
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  va_list ap;
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  va_start(ap, fmt);
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  n += chprintf(stream, name);
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  while (n < namewidth) {
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    streamPut(stream, ' ');
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    ++n;
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  }
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  n += chvprintf(stream, fmt, ap);
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  va_end(ap);
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  streamPut(stream, '\n');