FreeCalypso > hg > freecalypso-tools
view loadtools/ltexit.c @ 407:19e5a3e2f9c0
fcup-settime: moved time() retrieval a little closer to the output
A fundamental problem with all simple time transfer tools is that there is
always some delay between the time retrieval on the source system and that
transmitted time being set on the destination, and the resulting time
on the destination system is off by that delay amount. This delay cannot
be fully eliminated when working in a simple environment like ours,
but we should make our best effort to minimize it. In the present case,
moving the atinterf_init() call before the time() retrieval should make
a teensy-tiny improvement.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 11 Aug 2018 21:52:17 +0000 |
parents | 96332d875fc9 |
children | aba969153d20 |
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/* * This module implements the loadtool exit command, along with its * options for jump-reboot and Iota power-off. */ #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> static void exit_bare(rc) { exit(rc); } static void exit_gta02_cutpwr(rc) { #ifdef GTA0x_AP_BUILD set_gta_modem_power_ctrl(0); #endif exit(rc); } static void exit_iotaoff(rc) { static char *poweroff_argv[2] = {"poweroff", 0}; tpinterf_make_cmd(poweroff_argv); tpinterf_send_cmd(); exit(rc); } static void exit_jump0(rc) { static char *jump0_argv[3] = {"jump", "0", 0}; tpinterf_make_cmd(jump0_argv); tpinterf_send_cmd(); exit(rc); } void (*default_exit)() = exit_bare; static struct kwtab { char *kw; void (*func)(); } exit_modes[] = { {"bare", exit_bare}, {"gta02-cutpwr", exit_gta02_cutpwr}, {"iota-off", exit_iotaoff}, {"jump0", exit_jump0}, {0, 0} }; cmd_exit(argc, argv) char **argv; { struct kwtab *tp; if (argc < 2) default_exit(0); for (tp = exit_modes; tp->kw; tp++) if (!strcmp(tp->kw, argv[1])) break; if (!tp->func) { fprintf(stderr, "error: \"%s\" is not an understood exit mode\n", argv[1]); return(-1); } tp->func(0); } /* called from hwparam.c config file parser */ void set_default_exit_mode(arg, filename_for_errs, lineno_for_errs) char *arg; char *filename_for_errs; int lineno_for_errs; { char *cp; struct kwtab *tp; while (isspace(*arg)) arg++; if (!*arg) { fprintf(stderr, "%s line %d: exit-mode setting requires an argument\n", filename_for_errs, lineno_for_errs); exit(1); } for (cp = arg; *cp && !isspace(*cp); cp++) ; *cp = '\0'; for (tp = exit_modes; tp->kw; tp++) if (!strcmp(tp->kw, arg)) break; if (!tp->func) { fprintf(stderr, "%s line %d: \"%s\" is not an understood exit mode\n", filename_for_errs, lineno_for_errs, arg); exit(1); } default_exit = tp->func; }