/*
- * Copyright (C) 1997-2011 Andre Noll <maan@systemlinux.org>
+ * Copyright (C) 1997-2013 Andre Noll <maan@systemlinux.org>
*
* Licensed under the GPL v2. For licencing details see COPYING.
*/
#include <limits.h>
#include <stdarg.h>
#include <ctype.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-#include <sys/socket.h>
-#include <sys/un.h> /* needed by create_pf_socket */
#include <string.h>
#include <assert.h>
+#include <stdbool.h>
+#include <inttypes.h>
+#include <sys/uio.h>
#include "gcc-compat.h"
/** used in various contexts */
typeof(x) _x = (x); \
_x > 0? _x : -_x; })
+
+extern __printf_2_3 void (*para_log)(int, const char*, ...);
/**
* Define a standard log function that always writes to stderr.
*
+ * \param funcname The name of the function to be defined.
+ *
* \param loglevel_barrier If the loglevel of the current message
* is less than that, the message is going to be ignored.
*
*/
-#define INIT_STDERR_LOGGING(loglevel_barrier) \
- __printf_2_3 void para_log(int ll, const char* fmt,...) \
+#define DEFINE_STDERR_LOGGER(funcname, loglevel_barrier) \
+ static __printf_2_3 void funcname(int ll, const char* fmt,...) \
{ \
va_list argp; \
if (ll < loglevel_barrier) \
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;
/** Sent by para_client to initiate the authentication procedure. */
#define AUTH_REQUEST_MSG "auth rsa "
-/** Sent by para_server for commands that expect a data file. */
-#define AWAITING_DATA_MSG "\nAwaiting Data."
-/** Sent by para_server if authentication was successful. */
-#define PROCEED_MSG "Proceed."
-/** Length of the \p PROCEED_MSG string. */
-#define PROCEED_MSG_LEN strlen(PROCEED_MSG)
-/** Sent by para_client to indicate the end of the command line. */
-#define EOC_MSG "\nEnd of Command."
/* exec */
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};
int for_each_stat_item(char *item_buf, size_t num_bytes,
int (*item_handler)(int, char *));
-__printf_2_3 void para_log(int, const char*, ...);
/**
- * Write a log message to a dynamically allocated string.
+ * Return a random non-negative integer in an interval.
*
- * \param fmt Usual format string.
- * \param p Result pointer.
+ * \param max Determines maximal possible return value.
*
- * \sa printf(3). */
-#define PARA_VSPRINTF(fmt, p) \
-{ \
- int n; \
- size_t size = 100; \
- p = para_malloc(size); \
- while (1) { \
- va_list ap; \
- /* Try to print in the allocated space. */ \
- va_start(ap, fmt); \
- n = vsnprintf(p, size, fmt, ap); \
- va_end(ap); \
- /* If that worked, return the string. */ \
- if (n > -1 && n < size) \
- break; \
- /* Else try again with more space. */ \
- if (n > -1) /* glibc 2.1 */ \
- size = n + 1; /* precisely what is needed */ \
- else /* glibc 2.0 */ \
- size *= 2; /* twice the old size */ \
- p = para_realloc(p, size); \
- } \
+ * \return An integer between zero and \p max - 1, inclusively.
+ */
+_static_inline_ long int para_random(unsigned max)
+{
+ return ((max + 0.0) * (random() / (RAND_MAX + 1.0)));
}
/**
- * Return a random non-negative integer in an interval.
+ * Simple sanity check for I/O vectors.
*
- * \param max Determines maximal possible return value.
+ * \param iov Pointer to the I/O vector to check.
*
- * \return An integer between zero and \p max - 1, inclusively.
+ * \return True if \a iov points to a non-empty buffer.
*/
-_static_inline_ long int para_random(unsigned max)
+_static_inline_ bool iov_valid(const struct iovec *iov)
{
- return ((max + 0.0) * (random() / (RAND_MAX + 1.0)));
+ return iov && iov->iov_len > 0 && iov->iov_base;
}
/** Round up x to next multiple of y. */
projects / paraslash.git / blobdiff