/** @This initializes an already allocated uprobe_pfx structure.
*
* @param uprobe_pfx pointer to the already allocated structure
* @param next next probe to test if this one doesn't catch the event
* @param min_level minimum level of passed-through messages
* @param name name of the pipe (informative)
* @return pointer to uprobe, or NULL in case of error
*/
struct uprobe *uprobe_pfx_init(struct uprobe_pfx *uprobe_pfx,
struct uprobe *next,
enum uprobe_log_level min_level,
const char *name)
{
assert(uprobe_pfx != NULL);
struct uprobe *uprobe = uprobe_pfx_to_uprobe(uprobe_pfx);
if (likely(name != NULL)) {
uprobe_pfx->name = strdup(name);
if (unlikely(uprobe_pfx->name == NULL)) {
uprobe_err(next, NULL, "allocation error in uprobe_pfx_init");
uprobe_throw(next, NULL, UPROBE_FATAL, UBASE_ERR_ALLOC);
}
} else
uprobe_pfx->name = NULL;
uprobe_pfx->min_level = min_level;
uprobe_init(uprobe, uprobe_pfx_throw, next);
return uprobe;
}
int main(int argc, char **argv)
{
struct uprobe *uprobe1 = uprobe_stdio_alloc(NULL, stdout, UPROBE_LOG_DEBUG);
assert(uprobe1 != NULL);
uprobe_err(uprobe1, NULL, "This is an error");
uprobe_warn_va(uprobe1, NULL, "This is a %s warning with %d", "composite",
0x42);
uprobe_notice(uprobe1, NULL, "This is a notice");
uprobe_dbg(uprobe1, NULL, "This is a debug");
uprobe_stdio_free(uprobe1);
struct uprobe *uprobe2 = uprobe_stdio_alloc(NULL, stdout, UPROBE_LOG_ERROR);
assert(uprobe2 != NULL);
uprobe_err_va(uprobe2, NULL, "This is another error with %d", 0x43);
uprobe_warn(uprobe2, NULL, "This is a warning that you shouldn't see");
uprobe_stdio_free(uprobe2);
return 0;
}