* 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 *
#endif
#include "log.h"
-#include "configuration.h"
+#include "time_support.h"
+// @todo the inclusion of server.h here is a layering violation
+#include "server.h"
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
#include <stdarg.h>
-#include <time.h>
+
+#ifdef _DEBUG_FREE_SPACE_
+#ifdef HAVE_MALLOC_H
+#include <malloc.h>
+#else
+#error "malloc.h is required to use --enable-malloc-logging"
+#endif
+#endif
int debug_level = -1;
static FILE* log_output;
static log_callback_t *log_callbacks = NULL;
-static time_t start;
+static long long last_time;
+static long long current_time;
+
+static long long start;
static char *log_strings[5] =
{
- "User: ",
- "Error: ",
- "Warning:",
- "Info: ",
- "Debug: "
+ "User : ",
+ "Error: ",
+ "Warn : ", /* want a space after each colon, all same width, colons aligned */
+ "Info : ",
+ "Debug: "
};
+
static int count = 0;
-static void log_printfv(enum log_levels level, const char *file, int line, const char *function, const char *format, va_list args)
+
+static struct store_log_forward * log_head = NULL;
+static int log_forward_count = 0;
+
+struct store_log_forward
{
- char buffer[512];
- log_callback_t *cb;
+ struct store_log_forward * next;
+ const char * file;
+ int line;
+ const char * function;
+ const char * string;
+};
+
+/* either forward the log to the listeners or store it for possible forwarding later */
+static void log_forward(const char *file, int line, const char *function, const char *string)
+{
+ if (log_forward_count==0)
+ {
+ log_callback_t *cb, *next;
+ cb = log_callbacks;
+ /* DANGER!!!! the log callback can remove itself!!!! */
+ while (cb)
+ {
+ next = cb->next;
+ cb->fn(cb->priv, file, line, function, string);
+ cb = next;
+ }
+ } else
+ {
+ struct store_log_forward *log = malloc(sizeof (struct store_log_forward));
+ log->file = strdup(file);
+ log->line = line;
+ log->function = strdup(function);
+ log->string = strdup(string);
+ log->next = NULL;
+ if (log_head==NULL)
+ log_head = log;
+ else
+ {
+ /* append to tail */
+ struct store_log_forward * t;
+ t = log_head;
+ while (t->next!=NULL)
+ {
+ t = t->next;
+ }
+ t->next = log;
+ }
+ }
+}
+
+void log_try(void)
+{
+ log_forward_count++;
+}
+
+void log_catch(void)
+{
+ assert(log_forward_count>0);
+ log_forward_count--;
+}
+
+void log_rethrow(void)
+{
+ log_catch();
+ if (log_forward_count==0)
+ {
+ struct store_log_forward *log;
+
+ log = log_head;
+ while (log != NULL)
+ {
+ log_forward(log->file, log->line, log->function, log->string);
- vsnprintf(buffer, 512, format, args);
+ struct store_log_forward *t=log;
+ log = log->next;
- if (level == LOG_OUTPUT)
+ free((void *)t->file);
+ free((void *)t->function);
+ free((void *)t->string);
+ free(t);
+
+ }
+
+ log_head = NULL;
+ }
+}
+
+
+/* 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.
+ * target_request.c).
+ *
+ */
+static void log_puts(enum log_levels level, const char *file, int line, const char *function, const char *string)
+{
+ char *f;
+ if (level == LOG_LVL_OUTPUT)
{
/* do not prepend any headers, just print out what we were given and return */
- fputs(buffer, log_output);
+ fputs(string, log_output);
fflush(log_output);
return;
}
- char *f = strrchr(file, '/');
+ f = strrchr(file, '/');
if (f != NULL)
file = f + 1;
- if (debug_level >= LOG_DEBUG)
+ if (strchr(string, '\n') != NULL)
{
- /* print with count and time information */
- int t=(int)(time(NULL)-start);
- fprintf(log_output, "%s %d %d %s:%d %s(): %s", log_strings[level+1], count, t, file, line, function, buffer);
- }
- else
+ if (debug_level >= LOG_LVL_DEBUG)
+ {
+ /* print with count and time information */
+ int t = (int)(timeval_ms()-start);
+#ifdef _DEBUG_FREE_SPACE_
+ struct mallinfo info;
+ info = mallinfo();
+#endif
+ fprintf(log_output, "%s%d %d %s:%d %s()"
+#ifdef _DEBUG_FREE_SPACE_
+ " %d"
+#endif
+ ": %s", log_strings[level + 1], count, t, file, line, function,
+#ifdef _DEBUG_FREE_SPACE_
+ info.fordblks,
+#endif
+ string);
+ }
+ else if (server_use_pipes == 0)
+ {
+ /* if we are using gdb through pipes then we do not want any output
+ * to the pipe otherwise we get repeated strings */
+ 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
{
- /* do not print count and time */
- fprintf(log_output, "%s %s:%d %s(): %s", log_strings[level+1], file, line, function, buffer);
+ /* only entire lines are logged. Otherwise it's
+ * single chars intended for the log callbacks. */
}
fflush(log_output);
-
- /* Never forward LOG_DEBUG, too verbose and they can be found in the log if need be */
- if (level <= LOG_INFO)
+
+ /* Never forward LOG_LVL_DEBUG, too verbose and they can be found in the log if need be */
+ if (level <= LOG_LVL_INFO)
{
- for (cb = log_callbacks; cb; cb = cb->next)
- {
- cb->fn(cb->priv, file, line, function, format, args);
- }
+ log_forward(file, line, function, string);
}
}
+
void log_printf(enum log_levels level, const char *file, int line, const char *function, const char *format, ...)
{
+ char *string;
+ va_list ap;
+
count++;
if (level > debug_level)
return;
- va_list args;
- va_start(args, format);
- log_printfv(level, file, line, function, format, args);
- va_end(args);
-
+ va_start(ap, format);
+
+ string = alloc_vprintf(format, ap);
+ if (string != NULL)
+ {
+ log_puts(level, file, line, function, string);
+ free(string);
+ }
+
+ va_end(ap);
}
-void log_printfnl(enum log_levels level, const char *file, int line, const char *function, const char *format, ...)
+void log_printf_lf(enum log_levels level, const char *file, int line, const char *function, const char *format, ...)
{
+ char *string;
+ va_list ap;
+
count++;
if (level > debug_level)
return;
-
- char *t=malloc(strlen(format)+2);
- strcpy(t, format);
- strcat(t, "\n");
-
- va_list args;
- va_start(args, format);
- log_printfv(level, file, line, function, t, args);
- va_end(args);
-
- free(t);
+
+ va_start(ap, format);
+
+ string = alloc_vprintf(format, ap);
+ if (string != NULL)
+ {
+ strcat(string, "\n"); /* alloc_vprintf guaranteed the buffer to be at least one char longer */
+ log_puts(level, file, line, function, string);
+ free(string);
+ }
+
+ va_end(ap);
}
/* change the current debug level on the fly
* 2: + INFORMATIONAL MSGS
* 3: + DEBUG MSGS
*/
-int handle_debug_level_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_debug_level_command)
{
- if (argc == 0)
- command_print(cmd_ctx, "debug_level: %i", debug_level);
-
- if (argc > 0)
- debug_level = strtoul(args[0], NULL, 0);
+ if (argc == 1)
+ {
+ unsigned new_level;
+ COMMAND_PARSE_NUMBER(uint, args[0], new_level);
+ debug_level = MIN(new_level, LOG_LVL_DEBUG);
+ }
+ else if (argc > 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- if (debug_level < 0)
- debug_level = 0;
+ if (debug_level >= LOG_LVL_DEBUG && server_use_pipes == 1)
+ {
+ /* if we are enabling debug info then we need to write to a log file
+ * otherwise the pipe will get full and cause issues with gdb */
+ FILE* file = fopen("openocd.log", "w");
+ if (file)
+ {
+ log_output = file;
+ LOG_WARNING("enabling log output as we are using pipes");
+ }
+ }
- if (debug_level > 3)
- debug_level = 3;
+ command_print(cmd_ctx, "debug_level: %i", debug_level);
return ERROR_OK;
}
-int handle_log_output_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc)
+COMMAND_HANDLER(handle_log_output_command)
{
if (argc == 1)
{
FILE* file = fopen(args[0], "w");
-
+
if (file)
{
log_output = file;
int log_register_commands(struct command_context_s *cmd_ctx)
{
- start = time(NULL);
+ start = timeval_ms();
register_command(cmd_ctx, NULL, "log_output", handle_log_output_command,
COMMAND_ANY, "redirect logging to <file> (default: stderr)");
register_command(cmd_ctx, NULL, "debug_level", handle_debug_level_command,
{
/* set defaults for daemon configuration, if not set by cmdline or cfgfile */
if (debug_level == -1)
- debug_level = LOG_INFO;
-
+ 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;
for (p = &log_callbacks; (cb = *p); p = &(*p)->next)
{
- if (cb->fn == fn && cb->priv == priv)
- {
- *p = cb->next;
+ if (cb->fn == fn && cb->priv == priv)
+ {
+ *p = cb->next;
free(cb);
return ERROR_OK;
}
}
/* return allocated string w/printf() result */
-char *alloc_printf(const char *fmt, va_list ap)
+char *alloc_vprintf(const char *fmt, va_list ap)
{
+ /* no buffer at the beginning, force realloc to do the job */
char *string = NULL;
-
- /* start by 0 to exercise all the code paths. Need minimum 2 bytes to
- * fit 1 char and 0 terminator. */
- int size = 0;
- int first = 1;
+
+ /* start with buffer size suitable for typical messages */
+ int size = 128;
+
for (;;)
{
- if ((string == NULL) || (!first))
+ char *t = string;
+ va_list ap_copy;
+ int ret;
+ string = realloc(string, size);
+ if (string == NULL)
{
- size = size * 2 + 2;
- char *t = string;
- string = realloc(string, size);
- if (string == NULL)
- {
- if (t != NULL)
- free(t);
- return NULL;
- }
+ if (t != NULL)
+ free(t);
+ return NULL;
}
-
- int ret;
- ret = vsnprintf(string, size, fmt, ap);
- /* NB! The result of the vsnprintf() might be an *EMPTY* string! */
- if ((ret >= 0) && ((ret + 1) < size))
- {
- return string;
- }
- /* there was just enough or not enough space, allocate more. */
- first = 0;
+
+ va_copy(ap_copy, ap);
+
+ ret = vsnprintf(string, size, fmt, ap_copy);
+ /* NB! The result of the vsnprintf() might be an *EMPTY* string! */
+ if ((ret >= 0) && ((ret + 1) < size))
+ break;
+
+ /* 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;
+}
+
+char *alloc_printf(const char *format, ...)
+{
+ char *string;
+ va_list ap;
+ va_start(ap, format);
+ string = alloc_vprintf(format, ap);
+ 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)
+ {
+ extern int gdb_actual_connections;
+
+ if (gdb_actual_connections)
+ LOG_WARNING("keep_alive() was not invoked in the "
+ "1000ms timelimit. GDB alive packet not "
+ "sent! (%lld). Workaround: increase "
+ "\"set remotetimeout\" in GDB",
+ current_time-last_time);
+ else
+ LOG_DEBUG("keep_alive() was not invoked in the "
+ "1000ms timelimit (%lld). This may cause "
+ "trouble with GDB connections.",
+ 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