Try/catch scheme. Typed up the functionality and regression tested.

Ready for discussion and tiny patches that tries out this scheme.

git-svn-id: svn://svn.berlios.de/openocd/trunk@2755 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe 2009-09-25 11:11:39 +00:00
parent 37755ffdb6
commit 1c262c8826
2 changed files with 100 additions and 9 deletions

View File

@ -64,6 +64,95 @@ static char *log_strings[5] =
static int count = 0;
static struct store_log_forward * log_head = NULL;
static int log_forward_count = 0;
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, 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);
struct store_log_forward *t=log;
log = log->next;
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
@ -131,18 +220,11 @@ static void log_puts(enum log_levels level, const char *file, int line, const ch
/* 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, ...)
{
char *string;

View File

@ -64,6 +64,15 @@ extern void kept_alive(void);
extern void alive_sleep(int ms);
extern void busy_sleep(int ms);
/* log entries can be paused and replayed roughly according to the try/catch/rethrow
* concepts in C++
*/
void log_try(void);
void log_catch(void);
void log_rethrow(void);
typedef void (*log_callback_fn)(void *priv, const char *file, int line,
const char *function, const char *string);