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#pragma once
#ifdef VERBOSE_FUNCTIONS
# include <stdio.h>
# include <stdarg.h>
# include <pthread.h>
static void
verbose(const char *fmt, ...)
{
static pthread_mutex_t mutex = PTHREAD_MUTEX_INITIALIZER;
pthread_mutex_lock(&mutex);
fprintf(stderr, "%lu: ", pthread_self());
va_list ap;
va_start(ap, fmt);
vfprintf(stderr, fmt, ap);
va_end(ap);
fputc('\n', stderr);
pthread_mutex_unlock(&mutex);
}
#else
# define verbose(...)
#endif
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