* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
+ * Copyright (C) 2007,2008 Øyvind Harboe *
+ * oyvind.harboe@zylin.com *
+ * *
+ * Copyright (C) 2008 by Spencer Oliver *
+ * spen@spen-soft.co.uk *
+ * *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
#include "log.h"
#include "configuration.h"
#include "time_support.h"
+#include "command.h"
#include <stdio.h>
#include <stdlib.h>
static FILE* log_output;
static log_callback_t *log_callbacks = NULL;
+static long long last_time;
+static long long current_time;
+
static long long start;
static char *log_strings[5] =
static int count = 0;
/* The log_puts() serves to somewhat different goals:
- *
+ *
* - logging
* - feeding low-level info to the user in GDB or Telnet
- *
+ *
* The latter dictates that strings without newline are not logged, lest there
- * will be *MANY log lines when sending one char at the time(e.g.
+ * will be *MANY log lines when sending one char at the time(e.g.
* target_request.c).
- *
+ *
*/
static void log_puts(enum log_levels level, const char *file, int line, const char *function, const char *string)
{
{
/* print with count and time information */
int t=(int)(timeval_ms()-start);
-#if PRINT_MEM()
+#if PRINT_MEM()
struct mallinfo info;
info = mallinfo();
#endif
#if PRINT_MEM()
" %d"
#endif
- ": %s", log_strings[level+1], count, t, file, line, function,
+ ": %s", log_strings[level+1], count, t, file, line, function,
#if PRINT_MEM()
info.fordblks,
#endif
}
else
{
- /* do not print count and time */
- fprintf(log_output, "%s %s:%d %s(): %s", log_strings[level+1], file, line, function, string);
+ if (strcmp(string, "\n")!=0)
+ {
+ /* print human readable output - but skip empty lines */
+ fprintf(log_output, "%s%s",
+ (level > LOG_LVL_USER)?log_strings[level+1]:"", string);
+ }
}
} else
{
- /* only entire lines are logged. Otherwise it's
+ /* only entire lines are logged. Otherwise it's
* single chars intended for the log callbacks. */
}
fflush(log_output);
-
+
/* Never forward LOG_LVL_DEBUG, too verbose and they can be found in the log if need be */
if (level <= LOG_LVL_INFO)
{
log_puts(level, file, line, function, string);
free(string);
}
-
+
va_end(ap);
}
count++;
if (level > debug_level)
return;
-
+
va_start(ap, format);
-
+
string = alloc_vprintf(format, ap);
if (string != NULL)
{
log_puts(level, file, line, function, string);
free(string);
}
-
+
va_end(ap);
}
if (argc == 1)
{
FILE* file = fopen(args[0], "w");
-
+
if (file)
{
log_output = file;
/* set defaults for daemon configuration, if not set by cmdline or cfgfile */
if (debug_level == -1)
debug_level = LOG_LVL_INFO;
-
+
if (log_output == NULL)
{
log_output = stderr;
}
-
+
+ start=last_time=timeval_ms();
+
return ERROR_OK;
}
-
+
int set_log_output(struct command_context_s *cmd_ctx, FILE *output)
{
log_output = output;
{
/* no buffer at the beginning, force realloc to do the job */
char *string = NULL;
-
+
/* start with buffer size suitable for typical messages */
int size = 128;
/* there was just enough or not enough space, allocate more in the next round */
size *= 2; /* double the buffer size */
}
-
+
/* the returned buffer is by principle guaranteed to be at least one character longer */
return string;
}
va_end(ap);
return string;
}
+
+/* Code must return to the server loop before 1000ms has returned or invoke
+ * this function.
+ *
+ * The GDB connection will time out if it spends >2000ms and you'll get nasty
+ * error messages from GDB:
+ *
+ * Ignoring packet error, continuing...
+ * Reply contains invalid hex digit 116
+ *
+ * While it is possible use "set remotetimeout" to more than the default 2000ms
+ * in GDB, OpenOCD guarantees that it sends keep-alive packages on the
+ * GDB protocol and it is a bug in OpenOCD not to either return to the server
+ * loop or invoke keep_alive() every 1000ms.
+ *
+ * This function will send a keep alive packet if >500ms has passed since last time
+ * it was invoked.
+ *
+ * Note that this function can be invoked often, so it needs to be relatively
+ * fast when invoked more often than every 500ms.
+ *
+ */
+void keep_alive()
+{
+ current_time=timeval_ms();
+ if (current_time-last_time>1000)
+ {
+ LOG_WARNING("BUG: keep_alive() was not invoked in the 1000ms timelimit. GDB alive packet not sent! (%lld)", current_time-last_time);
+ }
+ if (current_time-last_time>500)
+ {
+ /* this will keep the GDB connection alive */
+ LOG_USER_N("%s", "");
+
+ /* DANGER!!!! do not add code to invoke e.g. target event processing,
+ * jim timer processing, etc. it can cause infinite recursion +
+ * jim event callbacks need to happen at a well defined time,
+ * not anywhere keep_alive() is invoked.
+ *
+ * These functions should be invoked at a well defined spot in server.c
+ */
+
+ last_time=current_time;
+ }
+}
+
+/* reset keep alive timer without sending message */
+void kept_alive()
+{
+ current_time=timeval_ms();
+ last_time=current_time;
+}
+
+/* if we sleep for extended periods of time, we must invoke keep_alive() intermittantly */
+void alive_sleep(int ms)
+{
+ int i;
+ int napTime=10;
+ for (i=0; i<ms; i+=napTime)
+ {
+ int sleep_a_bit=ms-i;
+ if (sleep_a_bit>napTime)
+ {
+ sleep_a_bit=napTime;
+ }
+ usleep(sleep_a_bit*1000);
+ keep_alive();
+ }
+}
+
+void busy_sleep(int ms)
+{
+ long long then;
+ then=timeval_ms();
+ while ((timeval_ms()-then)<ms)
+ {
+ /* busy wait */
+ }
+}
projects / fw / openocd / blobdiff