#include <unistd.h>
#include <errno.h>
+#include <string.h>
+#include <sys/uio.h>
+#include <pthread.h>
static const char *appname;
"<7> DEBUG"
};
+static int tty;
+
+static const char chars[] = { '\n', '?', ':', ' ', '[', ',', ']' };
+
+static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
+
static void _vverbose_(int loglevel, const char *file, int line, const char *function, const char *fmt, va_list args)
{
- int saverr = errno;
- int tty = isatty(fileno(stderr));
- errno = saverr;
+ char buffer[4000];
+ char lino[40];
+ int saverr, n, rc;
+ struct iovec iov[20];
+
+ saverr = errno;
+
+ if (!tty)
+ tty = 1 + isatty(STDERR_FILENO);
+
+ iov[0].iov_base = (void*)prefixes[CROP_LOGLEVEL(loglevel)] + (tty - 1 ? 4 : 0);
+ iov[0].iov_len = strlen(iov[0].iov_base);
+
+ iov[1].iov_base = (void*)&chars[2];
+ iov[1].iov_len = 2;
+
+ n = 2;
+ if (fmt) {
+ iov[n].iov_base = buffer;
+ errno = saverr;
+ rc = vsnprintf(buffer, sizeof buffer, fmt, args);
+ if (rc < 0)
+ rc = 0;
+ else if ((size_t)rc > sizeof buffer) {
+ rc = (int)sizeof buffer;
+ buffer[rc - 1] = buffer[rc - 2] = buffer[rc - 3] = '.';
+ }
+ iov[n++].iov_len = (size_t)rc;
+ }
+ if (file && (!fmt || tty == 1 || loglevel <= Log_Level_Warning)) {
+ iov[n].iov_base = (void*)&chars[3 + !fmt];
+ iov[n++].iov_len = 2 - !fmt;
+ iov[n].iov_base = (void*)file;
+ iov[n++].iov_len = strlen(file);
+ iov[n].iov_base = (void*)&chars[2];
+ iov[n++].iov_len = 1;
+ if (line) {
+ iov[n].iov_base = lino;
+ iov[n++].iov_len = snprintf(lino, sizeof lino, "%d", line);
+ } else {
+ iov[n].iov_base = (void*)&chars[1];
+ iov[n++].iov_len = 1;
+ }
+ iov[n].iov_base = (void*)&chars[5];
+ iov[n++].iov_len = 1;
+ if (function) {
+ iov[n].iov_base = (void*)function;
+ iov[n++].iov_len = strlen(function);
+ } else {
+ iov[n].iov_base = (void*)&chars[1];
+ iov[n++].iov_len = 1;
+ }
+ iov[n].iov_base = (void*)&chars[6];
+ iov[n++].iov_len = 1;
+ }
+ if (n == 2) {
+ iov[n].iov_base = (void*)&chars[1];
+ iov[n++].iov_len = 1;
+ }
+ iov[n].iov_base = (void*)&chars[0];
+ iov[n++].iov_len = 1;
- fprintf(stderr, "%s: ", prefixes[CROP_LOGLEVEL(loglevel)] + (tty ? 4 : 0));
- vfprintf(stderr, fmt, args);
- if (file != NULL && (!tty || verbosity > 2))
- fprintf(stderr, " [%s:%d,%s]\n", file, line, function);
- else
- fprintf(stderr, "\n");
+ pthread_mutex_lock(&mutex);
+ writev(STDERR_FILENO, iov, n);
+ pthread_mutex_unlock(&mutex);
+
+ errno = saverr;
}
void verbose_set_name(const char *name, int authority)