* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
- * Copyright (C) 2007,2008 Øyvind Harboe *
+ * Copyright (C) 2007-2010 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 *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
+
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
-#include "log.h"
-#include "configuration.h"
#include "time_support.h"
-#include "command.h"
+/* @todo the inclusion of server.h here is a layering violation */
+#include <server/server.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
#include <stdarg.h>
-#define PRINT_MEM() 0
-#if PRINT_MEM()
+#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 FILE *log_output;
+static struct log_callback *log_callbacks;
static long long last_time;
static long long current_time;
static long long start;
-static char *log_strings[5] =
-{
- "User: ",
- "Error: ",
- "Warning:",
- "Info: ",
- "Debug: "
+static char *log_strings[5] = {
+ "User : ",
+ "Error: ",
+ "Warn : ", /* want a space after each colon, all same width, colons aligned */
+ "Info : ",
+ "Debug: "
};
-static int count = 0;
+static int count;
+
+static struct store_log_forward *log_head;
+static int log_forward_count;
+
+struct store_log_forward {
+ 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, unsigned line, const char *function, const char *string)
+{
+ if (log_forward_count == 0) {
+ struct log_callback *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;
+ }
+ }
+}
/* 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)
+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)
- {
+ if (level == LOG_LVL_OUTPUT) {
/* do not prepend any headers, just print out what we were given and return */
fputs(string, log_output);
fflush(log_output);
if (f != NULL)
file = f + 1;
- if (strchr(string, '\n')!=NULL)
- {
- if (debug_level >= LOG_LVL_DEBUG)
- {
+ if (strlen(string) > 0) {
+ if (debug_level >= LOG_LVL_DEBUG) {
/* print with count and time information */
- int t=(int)(timeval_ms()-start);
-#if PRINT_MEM()
+ 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()"
-#if PRINT_MEM()
- " %d"
+ 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,
-#if PRINT_MEM()
- info.fordblks,
+ ": %s", log_strings[level + 1], count, t, file, line, function,
+#ifdef _DEBUG_FREE_SPACE_
+ info.fordblks,
#endif
- string);
+ string);
+ } else {
+ /* if we are using gdb through pipes then we do not want any output
+ * to the pipe otherwise we get repeated strings */
+ fprintf(log_output, "%s%s",
+ (level > LOG_LVL_USER) ? log_strings[level + 1] : "", string);
}
- else
- {
- 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
- * single chars intended for the log callbacks. */
+ } else {
+ /* Empty strings are sent to log callbacks to keep e.g. gdbserver alive, here we do
+ *nothing. */
}
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_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;
- }
- }
+ log_forward(file, line, function, string);
}
-void log_printf(enum log_levels level, const char *file, int line, const char *function, const char *format, ...)
+void log_printf(enum log_levels level,
+ const char *file,
+ unsigned line,
+ const char *function,
+ const char *format,
+ ...)
{
char *string;
va_list ap;
va_start(ap, format);
string = alloc_vprintf(format, ap);
- if (string != NULL)
- {
+ if (string != NULL) {
log_puts(level, file, line, function, string);
free(string);
}
-
+
va_end(ap);
}
-void log_printf_lf(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,
+ unsigned line,
+ const char *function,
+ const char *format,
+ ...)
{
char *string;
va_list ap;
count++;
if (level > debug_level)
return;
-
+
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 */
+ 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
- * 0: only ERRORS
- * 1: + WARNINGS
- * 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 (debug_level < 0)
- debug_level = 0;
+ if (CMD_ARGC == 1) {
+ int new_level;
+ COMMAND_PARSE_NUMBER(int, CMD_ARGV[0], new_level);
+ if ((new_level > LOG_LVL_DEBUG) || (new_level < LOG_LVL_SILENT)) {
+ LOG_ERROR("level must be between %d and %d", LOG_LVL_SILENT, LOG_LVL_DEBUG);
+ return ERROR_COMMAND_SYNTAX_ERROR;
+ }
+ debug_level = new_level;
+ } else if (CMD_ARGC > 1)
+ return ERROR_COMMAND_SYNTAX_ERROR;
- 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 (CMD_ARGC == 1) {
+ FILE *file = fopen(CMD_ARGV[0], "w");
+
if (file)
- {
log_output = file;
- }
}
return ERROR_OK;
}
-int log_register_commands(struct command_context_s *cmd_ctx)
-{
- 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,
- COMMAND_ANY, "adjust debug level <0-3>");
+static struct command_registration log_command_handlers[] = {
+ {
+ .name = "log_output",
+ .handler = handle_log_output_command,
+ .mode = COMMAND_ANY,
+ .help = "redirect logging to a file (default: stderr)",
+ .usage = "file_name",
+ },
+ {
+ .name = "debug_level",
+ .handler = handle_debug_level_command,
+ .mode = COMMAND_ANY,
+ .help = "Sets the verbosity level of debugging output. "
+ "0 shows errors only; 1 adds warnings; "
+ "2 (default) adds other info; 3 adds debugging.",
+ .usage = "number",
+ },
+ COMMAND_REGISTRATION_DONE
+};
- return ERROR_OK;
+int log_register_commands(struct command_context *cmd_ctx)
+{
+ return register_commands(cmd_ctx, NULL, log_command_handlers);
}
-int log_init(struct command_context_s *cmd_ctx)
+void log_init(void)
{
- /* set defaults for daemon configuration, if not set by cmdline or cfgfile */
+ /* set defaults for daemon configuration,
+ * if not set by cmdline or cfgfile */
if (debug_level == -1)
debug_level = LOG_LVL_INFO;
-
+
+ char *debug_env = getenv("OPENOCD_DEBUG_LEVEL");
+ if (NULL != debug_env) {
+ int value;
+ int retval = parse_int(debug_env, &value);
+ if (ERROR_OK == retval &&
+ debug_level >= LOG_LVL_SILENT &&
+ debug_level <= LOG_LVL_DEBUG)
+ debug_level = value;
+ }
+
if (log_output == NULL)
- {
log_output = stderr;
- }
-
- start=last_time=timeval_ms();
-
- return ERROR_OK;
+
+ start = last_time = timeval_ms();
}
-
-int set_log_output(struct command_context_s *cmd_ctx, FILE *output)
+
+int set_log_output(struct command_context *cmd_ctx, FILE *output)
{
log_output = output;
return ERROR_OK;
/* add/remove log callback handler */
int log_add_callback(log_callback_fn fn, void *priv)
{
- log_callback_t *cb;
+ struct log_callback *cb;
/* prevent the same callback to be registered more than once, just for sure */
- for (cb = log_callbacks; cb; cb = cb->next)
- {
+ for (cb = log_callbacks; cb; cb = cb->next) {
if (cb->fn == fn && cb->priv == priv)
- return ERROR_INVALID_ARGUMENTS;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
- /* alloc memory, it is safe just to return in case of an error, no need for the caller to check this */
- if ((cb = malloc(sizeof(log_callback_t))) == NULL)
+ /* alloc memory, it is safe just to return in case of an error, no need for the caller to
+ *check this */
+ cb = malloc(sizeof(struct log_callback));
+ if (cb == NULL)
return ERROR_BUF_TOO_SMALL;
/* add item to the beginning of the linked list */
int log_remove_callback(log_callback_fn fn, void *priv)
{
- log_callback_t *cb, **p;
+ struct log_callback *cb, **p;
- for (p = &log_callbacks; (cb = *p); p = &(*p)->next)
- {
- if (cb->fn == fn && cb->priv == priv)
- {
+ for (p = &log_callbacks; (cb = *p); p = &(*p)->next) {
+ if (cb->fn == fn && cb->priv == priv) {
*p = cb->next;
free(cb);
return ERROR_OK;
}
/* no such item */
- return ERROR_INVALID_ARGUMENTS;
+ return ERROR_COMMAND_SYNTAX_ERROR;
}
/* return allocated string w/printf() result */
char *alloc_vprintf(const char *fmt, va_list ap)
{
- /* 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;
+ va_list ap_copy;
+ int len;
+ char *string;
- for (;;)
- {
- char *t = string;
- va_list ap_copy;
- int ret;
- string = realloc(string, size);
- if (string == NULL)
- {
- if (t != NULL)
- free(t);
- return NULL;
- }
+ /* determine the length of the buffer needed */
+ va_copy(ap_copy, ap);
+ len = vsnprintf(NULL, 0, fmt, ap_copy);
+ va_end(ap_copy);
- va_copy(ap_copy, ap);
+ /* allocate and make room for terminating zero. */
+ /* FIXME: The old version always allocated at least one byte extra and
+ * other code depend on that. They should be probably be fixed, but for
+ * now reserve the extra byte. */
+ string = malloc(len + 2);
+ if (string == NULL)
+ return NULL;
- 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;
+ /* do the real work */
+ vsnprintf(string, len + 1, fmt, ap);
- /* 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;
}
/* 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
*
* 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)
- {
+ 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", "");
- /* also process TCL events (we have to do this from 'log.c' since its
- * keep_alive() is the only routine guaranteed to be called at least
- * once per second :( */
- process_jim_events ();
+ /* 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
+ */
- /* process any timer events now */
- target_call_timer_callbacks_now();
-
- last_time=current_time;
+ last_time = current_time;
}
}
/* reset keep alive timer without sending message */
void kept_alive()
{
- current_time=timeval_ms();
- last_time=current_time;
+ 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)
+void alive_sleep(uint64_t ms)
{
- int i;
- for (i=0; i<ms; i+=500)
- {
- int sleep_a_bit=ms-i;
- if (sleep_a_bit>500)
- {
- sleep_a_bit=500;
- }
- keep_alive();
- usleep(sleep_a_bit*1000);
+ uint64_t napTime = 10;
+ for (uint64_t i = 0; i < ms; i += napTime) {
+ uint64_t sleep_a_bit = ms - i;
+ if (sleep_a_bit > napTime)
+ sleep_a_bit = napTime;
+
+ usleep(sleep_a_bit * 1000);
keep_alive();
}
}
+
+void busy_sleep(uint64_t ms)
+{
+ uint64_t then = timeval_ms();
+ while (timeval_ms() - then < ms) {
+ /*
+ * busy wait
+ */
+ }
+}
projects / fw / openocd / blobdiff