/*
- * Copyright (C) 1997-2012 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2013 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
vfprintf(stderr, fmt, argp); \
va_end(argp); \
}
+/**
+ * Define the standard log function and activate it.
+ *
+ * \param loglevel_barrier See \ref DEFINE_STDERR_LOGGER.
+ */
#define INIT_STDERR_LOGGING(loglevel_barrier) \
DEFINE_STDERR_LOGGER(stderr_log, loglevel_barrier); \
__printf_2_3 void (*para_log)(int, const char*, ...) = stderr_log;
int para_exec_cmdline_pid(pid_t *pid, const char *cmdline, int *fds);
/* time */
-int tv_diff(const struct timeval *b, const struct timeval *a, struct timeval *diff);
-long unsigned tv2ms(const struct timeval*);
-void d2tv(double, struct timeval*);
-void tv_add(const struct timeval*, const struct timeval *, struct timeval *);
-void tv_scale(const unsigned long, const struct timeval *, struct timeval *);
+int tv_diff(const struct timeval *b, const struct timeval *a,
+ struct timeval *diff);
+long unsigned tv2ms(const struct timeval *tv);
+void d2tv(double x, struct timeval *tv);
+void tv_add(const struct timeval *a, const struct timeval *b,
+ struct timeval *sum);
+void tv_scale(const unsigned long mult, const struct timeval *tv,
+ struct timeval *result);
void tv_divide(const unsigned long divisor, const struct timeval *tv,
- struct timeval *result);
+ struct timeval *result);
int tv_convex_combination(const long a, const struct timeval *tv1,
const long b, const struct timeval *tv2,
struct timeval *result);
-void ms2tv(const long unsigned n, struct timeval *tv);
+void ms2tv(long unsigned n, struct timeval *tv);
void compute_chunk_time(long unsigned chunk_num,
struct timeval *chunk_tv, struct timeval *stream_start,
struct timeval *result);
+struct timeval *clock_get_realtime(struct timeval *tv);
/** The enum of all status items. */
enum status_items {STATUS_ITEM_ENUM NUM_STAT_ITEMS};
return ((max + 0.0) * (random() / (RAND_MAX + 1.0)));
}
+/**
+ * Simple sanity check for I/O vectors.
+ *
+ * \param iov Pointer to the I/O vector to check.
+ *
+ * \return True if \a iov points to a non-empty buffer.
+ */
+_static_inline_ bool iov_valid(const struct iovec *iov)
+{
+ return iov && iov->iov_len > 0 && iov->iov_base;
+}
+
/** Round up x to next multiple of y. */
#define ROUND_UP(x, y) ({ \
const typeof(y) _divisor = y; \