FreeCalypso > hg > freecalypso-tools
view rvinterf/tmsh/pktsort.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 | 27c41e4b21ae |
children |
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/* * Here we sort out incoming packets from the target relayed via rvinterf. */ #include <sys/types.h> #include <stdio.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "pktmux.h" #include "limits.h" #include "localsock.h" #include "localtypes.h" #include "etm.h" #include "exitcodes.h" extern u_char rvi_msg[]; extern int rvi_msg_len; int got_tm_response; static void print_etm_trace() { char buf[MAX_PKT_FROM_TARGET*4]; strcpy(buf, "ETM Tr: "); safe_print_trace(rvi_msg + 7, rvi_msg_len - 7, buf + 8); async_msg_output(buf); } static void process_rvt() { u32 useid; if (rvi_msg_len < 7) { tty_cleanup(); fprintf(stderr, "Error: rvinterf sent us an invalid RVT msg\n"); exit(ERROR_RVINTERF); } useid = rvi_msg[2] << 24 | rvi_msg[3] << 16 | rvi_msg[4] << 8 | rvi_msg[5]; switch (useid) { case 0: handle_useid_0(); return; case ETM_USE_ID: print_etm_trace(); return; default: tty_cleanup(); fprintf(stderr, "unexpected fwd of USEID %08X from rvinterf\n", useid); exit(ERROR_RVINTERF); } } void process_pkt_from_target() { switch (rvi_msg[1]) { case RVT_RV_HEADER: process_rvt(); return; case RVT_TM_HEADER: etm_packet_rx(); got_tm_response = 1; return; default: tty_cleanup(); fprintf(stderr, "unexpected fwd of MUX %02X from rvinterf\n", rvi_msg[1]); exit(ERROR_RVINTERF); } }