2 This file is part of GNUnet.
3 (C) 2006, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file include/gnunet_common.h
23 * @brief commonly used definitions; globals in this file
24 * are exempt from the rule that the module name ("common")
25 * must be part of the symbol name.
27 * @author Christian Grothoff
30 #ifndef GNUNET_COMMON_H
31 #define GNUNET_COMMON_H
34 #include <sys/socket.h>
37 #include <netinet/in.h>
50 * Version of the API (for entire gnunetutil.so library).
52 #define GNUNET_UTIL_VERSION 0x00090100
55 * Named constants for return values. The following
56 * invariants hold: "GNUNET_NO == 0" (to allow "if (GNUNET_NO)")
57 * "GNUNET_OK != GNUNET_SYSERR", "GNUNET_OK != GNUNET_NO", "GNUNET_NO != GNUNET_SYSERR"
58 * and finally "GNUNET_YES != GNUNET_NO".
61 #define GNUNET_SYSERR -1
65 #define GNUNET_MIN(a,b) (((a) < (b)) ? (a) : (b))
67 #define GNUNET_MAX(a,b) (((a) > (b)) ? (a) : (b))
69 /* some systems use one underscore only... */
72 #define __BYTE_ORDER _BYTE_ORDER
73 #define __LITTLE_ENDIAN _LITTLE_ENDIAN
74 #define __BIG_ENDIAN _BIG_ENDIAN
82 # if __BYTE_ORDER == __LITTLE_ENDIAN
83 # define GNUNET_htobe16(x) __bswap_16 (x)
84 # define GNUNET_htole16(x) (x)
85 # define GNUNET_be16toh(x) __bswap_16 (x)
86 # define GNUNET_le16toh(x) (x)
88 # define GNUNET_htobe32(x) __bswap_32 (x)
89 # define GNUNET_htole32(x) (x)
90 # define GNUNET_be32toh(x) __bswap_32 (x)
91 # define GNUNET_le32toh(x) (x)
93 # define GNUNET_htobe64(x) __bswap_64 (x)
94 # define GNUNET_htole64(x) (x)
95 # define GNUNET_be64toh(x) __bswap_64 (x)
96 # define GNUNET_le64toh(x) (x)
98 # if __BYTE_ORDER == __BIG_ENDIAN
99 # define GNUNET_htobe16(x) (x)
100 # define GNUNET_htole16(x) __bswap_16 (x)
101 # define GNUNET_be16toh(x) (x)
102 # define GNUNET_le16toh(x) __bswap_16 (x)
104 # define GNUNET_htobe32(x) (x)
105 # define GNUNET_htole32(x) __bswap_32 (x)
106 # define GNUNET_be32toh(x) (x)
107 # define GNUNET_le32toh(x) __bswap_32 (x)
109 # define GNUNET_htobe64(x) (x)
110 # define GNUNET_htole64(x) __bswap_64 (x)
111 # define GNUNET_be64toh(x) (x)
112 # define GNUNET_le64toh(x) __bswap_64 (x)
119 * gcc-ism to get packed structs.
121 #define GNUNET_PACKED __attribute__((packed))
124 * gcc-ism to document unused arguments
126 #define GNUNET_UNUSED __attribute__((unused))
129 * gcc-ism to document functions that don't return
131 #define GNUNET_NORETURN __attribute__((noreturn))
135 * gcc 4.x-ism to pack structures even on W32 (to be used before structs)
137 #define GNUNET_NETWORK_STRUCT_BEGIN \
138 _Pragma("pack(push)") \
142 * gcc 4.x-ism to pack structures even on W32 (to be used after structs)
144 #define GNUNET_NETWORK_STRUCT_END _Pragma("pack(pop)")
147 #error gcc 4.x or higher required on W32 systems
150 * Good luck, GNUNET_PACKED should suffice, but this won't work on W32
152 #define GNUNET_NETWORK_STRUCT_BEGIN
155 * Good luck, GNUNET_PACKED should suffice, but this won't work on W32
157 #define GNUNET_NETWORK_STRUCT_END
160 /* ************************ super-general types *********************** */
162 GNUNET_NETWORK_STRUCT_BEGIN
165 * Header for all communications.
167 struct GNUNET_MessageHeader
171 * The length of the struct (in bytes, including the length field itself),
172 * in big-endian format.
174 uint16_t size GNUNET_PACKED;
177 * The type of the message (GNUNET_MESSAGE_TYPE_XXXX), in big-endian format.
179 uint16_t type GNUNET_PACKED;
182 GNUNET_NETWORK_STRUCT_END
185 * @brief 512-bit hashcode
189 uint32_t bits[512 / 8 / sizeof (uint32_t)]; /* = 16 */
194 GNUNET_NETWORK_STRUCT_BEGIN
197 * The identity of the host (basically the SHA-512 hashcode of
200 struct GNUNET_PeerIdentity
202 GNUNET_HashCode hashPubKey GNUNET_PACKED;
204 GNUNET_NETWORK_STRUCT_END
207 * Function called with a filename.
210 * @param filename complete filename (absolute path)
211 * @return GNUNET_OK to continue to iterate,
212 * GNUNET_SYSERR to abort iteration with error!
214 typedef int (*GNUNET_FileNameCallback) (void *cls, const char *filename);
217 /* ****************************** logging ***************************** */
222 enum GNUNET_ErrorType
224 GNUNET_ERROR_TYPE_UNSPECIFIED = -1,
225 GNUNET_ERROR_TYPE_NONE = 0,
226 GNUNET_ERROR_TYPE_ERROR = 1,
227 GNUNET_ERROR_TYPE_WARNING = 2,
228 GNUNET_ERROR_TYPE_INFO = 4,
229 GNUNET_ERROR_TYPE_DEBUG = 8,
230 GNUNET_ERROR_TYPE_INVALID = 16,
231 GNUNET_ERROR_TYPE_BULK = 32
236 * User-defined handler for log messages.
239 * @param kind severeity
240 * @param component what component is issuing the message?
241 * @param date when was the message logged?
242 * @param message what is the message
244 typedef void (*GNUNET_Logger) (void *cls, enum GNUNET_ErrorType kind,
245 const char *component, const char *date,
246 const char *message);
250 * Number of log calls to ignore.
252 extern unsigned int skip_log;
254 #if !defined(GNUNET_CULL_LOGGING)
256 GNUNET_get_log_call_status (int caller_level, const char *comp,
257 const char *file, const char *function, int line);
262 * @param kind how serious is the error?
263 * @param message what is the message (format string)
264 * @param ... arguments for format string
267 GNUNET_log_nocheck (enum GNUNET_ErrorType kind, const char *message, ...);
270 #if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
271 #define _GNUNET_BOOLEAN_EXPR(expr) \
273 int _gnunet_boolean_var_; \
275 _gnunet_boolean_var_ = 1; \
277 _gnunet_boolean_var_ = 0; \
278 _gnunet_boolean_var_; \
280 #define GN_LIKELY(expr) (__builtin_expect (_GNUNET_BOOLEAN_EXPR(expr), 1))
281 #define GN_UNLIKELY(expr) (__builtin_expect (_GNUNET_BOOLEAN_EXPR(expr), 0))
283 #define GN_LIKELY(expr) (expr)
284 #define GN_UNLIKELY(expr) (expr)
287 #if !defined(GNUNET_LOG_CALL_STATUS)
288 #define GNUNET_LOG_CALL_STATUS -1
292 * Log function that specifies an alternative component.
293 * This function should be used by plugins.
295 * @param kind how serious is the error?
296 * @param comp component responsible for generating the message
297 * @param message what is the message (format string)
298 * @param ... arguments for format string
301 GNUNET_log_from_nocheck (enum GNUNET_ErrorType kind, const char *comp,
302 const char *message, ...);
304 #if !defined(GNUNET_CULL_LOGGING)
305 #define GNUNET_log_from(kind,comp,...) do { int log_line = __LINE__;\
306 static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
307 if (GN_UNLIKELY(log_call_enabled == -1))\
308 log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), comp, __FILE__, __FUNCTION__, log_line);\
309 if (GN_UNLIKELY(skip_log > 0)) {skip_log--;}\
311 if (GN_UNLIKELY(log_call_enabled))\
312 GNUNET_log_from_nocheck (kind, comp, __VA_ARGS__);\
316 #define GNUNET_log(kind,...) do { int log_line = __LINE__;\
317 static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
318 if (GN_UNLIKELY(log_call_enabled == -1))\
319 log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), NULL, __FILE__, __FUNCTION__, log_line);\
320 if (GN_UNLIKELY(skip_log > 0)) {skip_log--;}\
322 if (GN_UNLIKELY(log_call_enabled))\
323 GNUNET_log_nocheck (kind, __VA_ARGS__);\
327 #define GNUNET_log(...)
328 #define GNUNET_log_from(...)
333 * Abort the process, generate a core dump if possible.
336 GNUNET_abort (void) GNUNET_NORETURN;
339 * Ignore the next n calls to the log function.
341 * @param n number of log calls to ignore
342 * @param check_reset GNUNET_YES to assert that the log skip counter is currently zero
345 GNUNET_log_skip (unsigned int n, int check_reset);
351 * @param comp default component to use
352 * @param loglevel what types of messages should be logged
353 * @param logfile change logging to logfile (use NULL to keep stderr)
354 * @return GNUNET_OK on success, GNUNET_SYSERR if logfile could not be opened
357 GNUNET_log_setup (const char *comp, const char *loglevel, const char *logfile);
361 * Add a custom logger.
363 * @param logger log function
364 * @param logger_cls closure for logger
367 GNUNET_logger_add (GNUNET_Logger logger, void *logger_cls);
371 * Remove a custom logger.
373 * @param logger log function
374 * @param logger_cls closure for logger
377 GNUNET_logger_remove (GNUNET_Logger logger, void *logger_cls);
381 * Convert a hash value to a string (for printing debug messages).
382 * This is one of the very few calls in the entire API that is
385 * @param hc the hash code
389 GNUNET_h2s (const GNUNET_HashCode * hc);
393 * Convert a hash value to a string (for printing debug messages).
394 * This prints all 104 characters of a hashcode!
395 * This is one of the very few calls in the entire API that is
398 * @param hc the hash code
402 GNUNET_h2s_full (const GNUNET_HashCode * hc);
406 * Convert a peer identity to a string (for printing debug messages).
407 * This is one of the very few calls in the entire API that is
410 * @param pid the peer identity
411 * @return string form of the pid; will be overwritten by next
412 * call to GNUNET_i2s.
415 GNUNET_i2s (const struct GNUNET_PeerIdentity *pid);
419 * Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string
420 * (for printing debug messages). This is one of the very few calls
421 * in the entire API that is NOT reentrant!
423 * @param addr the address
424 * @param addrlen the length of the address
425 * @return nicely formatted string for the address
426 * will be overwritten by next call to GNUNET_a2s.
429 GNUNET_a2s (const struct sockaddr *addr, socklen_t addrlen);
432 * Convert error type to string.
434 * @param kind type to convert
435 * @return string corresponding to the type
438 GNUNET_error_type_to_string (enum GNUNET_ErrorType kind);
442 * Use this for fatal errors that cannot be handled
444 #define GNUNET_assert(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); GNUNET_abort(); } } while(0)
447 * Use this for fatal errors that cannot be handled
449 #define GNUNET_assert_at(cond, f, l) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), f, l); GNUNET_abort(); } } while(0)
452 * Use this for internal assertion violations that are
453 * not fatal (can be handled) but should not occur.
455 #define GNUNET_break(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); } } while(0)
458 * Use this for assertion violations caused by other
459 * peers (i.e. protocol violations). We do not want to
460 * confuse end-users (say, some other peer runs an
461 * older, broken or incompatible GNUnet version), but
462 * we still want to see these problems during
463 * development and testing. "OP == other peer".
465 #define GNUNET_break_op(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_WARNING | GNUNET_ERROR_TYPE_BULK, _("External protocol violation detected at %s:%d.\n"), __FILE__, __LINE__); } } while(0)
468 * Log an error message at log-level 'level' that indicates
469 * a failure of the command 'cmd' with the message given
470 * by strerror(errno).
472 #define GNUNET_log_strerror(level, cmd) do { GNUNET_log(level, _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, STRERROR(errno)); } while(0)
475 * Log an error message at log-level 'level' that indicates
476 * a failure of the command 'cmd' with the message given
477 * by strerror(errno).
479 #define GNUNET_log_from_strerror(level, component, cmd) do { GNUNET_log_from (level, component, _("`%s' failed at %s:%d with error: %s\n"), cmd, __FILE__, __LINE__, STRERROR(errno)); } while(0)
482 * Log an error message at log-level 'level' that indicates
483 * a failure of the command 'cmd' with the message given
484 * by strerror(errno).
486 #define GNUNET_log_strerror_file(level, cmd, filename) do { GNUNET_log(level, _("`%s' failed on file `%s' at %s:%d with error: %s\n"), cmd, filename,__FILE__, __LINE__, STRERROR(errno)); } while(0)
489 * Log an error message at log-level 'level' that indicates
490 * a failure of the command 'cmd' with the message given
491 * by strerror(errno).
493 #define GNUNET_log_from_strerror_file(level, component, cmd, filename) do { GNUNET_log_from (level, component, _("`%s' failed on file `%s' at %s:%d with error: %s\n"), cmd, filename,__FILE__, __LINE__, STRERROR(errno)); } while(0)
495 /* ************************* endianess conversion ****************** */
498 * Convert unsigned 64-bit integer to host-byte-order.
499 * @param n the value in network byte order
500 * @return the same value in host byte order
503 GNUNET_ntohll (uint64_t n);
506 * Convert unsigned 64-bit integer to network-byte-order.
507 * @param n the value in host byte order
508 * @return the same value in network byte order
511 GNUNET_htonll (uint64_t n);
514 * Convert double to network-byte-order.
515 * @param d the value in network byte order
516 * @return the same value in host byte order
519 GNUNET_hton_double (double d);
522 * Convert double to host-byte-order
523 * @param d the value in network byte order
524 * @return the same value in host byte order
527 GNUNET_ntoh_double (double d);
529 /* ************************* allocation functions ****************** */
532 * Maximum allocation with GNUNET_malloc macro.
534 #define GNUNET_MAX_MALLOC_CHECKED (1024 * 1024 * 40)
537 * Wrapper around malloc. Allocates size bytes of memory.
538 * The memory will be zero'ed out.
540 * @param size the number of bytes to allocate, must be
541 * smaller than 40 MB.
542 * @return pointer to size bytes of memory, never NULL (!)
544 #define GNUNET_malloc(size) GNUNET_xmalloc_(size, __FILE__, __LINE__)
547 * Allocate and initialize a block of memory.
549 * @param buf data to initalize the block with
550 * @param size the number of bytes in buf (and size of the allocation)
551 * @return pointer to size bytes of memory, never NULL (!)
553 #define GNUNET_memdup(buf,size) GNUNET_xmemdup_(buf, size, __FILE__, __LINE__)
556 * Wrapper around malloc. Allocates size bytes of memory.
557 * The memory will be zero'ed out.
559 * @param size the number of bytes to allocate
560 * @return pointer to size bytes of memory, NULL if we do not have enough memory
562 #define GNUNET_malloc_large(size) GNUNET_xmalloc_unchecked_(size, __FILE__, __LINE__)
565 * Wrapper around realloc. Rellocates size bytes of memory.
567 * @param ptr the pointer to reallocate
568 * @param size the number of bytes to reallocate
569 * @return pointer to size bytes of memory
571 #define GNUNET_realloc(ptr, size) GNUNET_xrealloc_(ptr, size, __FILE__, __LINE__)
574 * Wrapper around free. Frees the memory referred to by ptr.
575 * Note that is is generally better to free memory that was
576 * allocated with GNUNET_array_grow using GNUNET_array_grow(mem, size, 0) instead of GNUNET_free.
578 * @param ptr location where to free the memory. ptr must have
579 * been returned by GNUNET_strdup, GNUNET_strndup, GNUNET_malloc or GNUNET_array_grow earlier.
581 #define GNUNET_free(ptr) GNUNET_xfree_(ptr, __FILE__, __LINE__)
584 * Free the memory pointed to by ptr if ptr is not NULL.
585 * Equivalent to if (ptr!=null)GNUNET_free(ptr).
587 * @param ptr the location in memory to free
589 #define GNUNET_free_non_null(ptr) do { void * __x__ = ptr; if (__x__ != NULL) { GNUNET_free(__x__); } } while(0)
592 * Wrapper around GNUNET_strdup. Makes a copy of the zero-terminated string
595 * @param a pointer to a zero-terminated string
596 * @return a copy of the string including zero-termination
598 #define GNUNET_strdup(a) GNUNET_xstrdup_(a,__FILE__,__LINE__)
601 * Wrapper around GNUNET_strndup. Makes a partial copy of the string
604 * @param a pointer to a string
605 * @param length of the string to duplicate
606 * @return a partial copy of the string including zero-termination
608 #define GNUNET_strndup(a,length) GNUNET_xstrndup_(a,length,__FILE__,__LINE__)
611 * Grow a well-typed (!) array. This is a convenience
612 * method to grow a vector <tt>arr</tt> of size <tt>size</tt>
613 * to the new (target) size <tt>tsize</tt>.
616 * Example (simple, well-typed stack):
619 * static struct foo * myVector = NULL;
620 * static int myVecLen = 0;
622 * static void push(struct foo * elem) {
623 * GNUNET_array_grow(myVector, myVecLen, myVecLen+1);
624 * memcpy(&myVector[myVecLen-1], elem, sizeof(struct foo));
627 * static void pop(struct foo * elem) {
628 * if (myVecLen == 0) die();
629 * memcpy(elem, myVector[myVecLen-1], sizeof(struct foo));
630 * GNUNET_array_grow(myVector, myVecLen, myVecLen-1);
634 * @param arr base-pointer of the vector, may be NULL if size is 0;
635 * will be updated to reflect the new address. The TYPE of
636 * arr is important since size is the number of elements and
637 * not the size in bytes
638 * @param size the number of elements in the existing vector (number
639 * of elements to copy over)
640 * @param tsize the target size for the resulting vector, use 0 to
641 * free the vector (then, arr will be NULL afterwards).
643 #define GNUNET_array_grow(arr,size,tsize) GNUNET_xgrow_((void**)&arr, sizeof(arr[0]), &size, tsize, __FILE__, __LINE__)
646 * Append an element to a list (growing the
649 #define GNUNET_array_append(arr,size,element) do { GNUNET_array_grow(arr,size,size+1); arr[size-1] = element; } while(0)
652 * Like snprintf, just aborts if the buffer is of insufficient size.
654 * @param buf pointer to buffer that is written to
655 * @param size number of bytes in buf
656 * @param format format strings
657 * @param ... data for format string
658 * @return number of bytes written to buf or negative value on error
661 GNUNET_snprintf (char *buf, size_t size, const char *format, ...);
665 * Like asprintf, just portable.
667 * @param buf set to a buffer of sufficient size (allocated, caller must free)
668 * @param format format string (see printf, fprintf, etc.)
669 * @param ... data for format string
670 * @return number of bytes in "*buf" excluding 0-termination
673 GNUNET_asprintf (char **buf, const char *format, ...);
676 /* ************** internal implementations, use macros above! ************** */
679 * Allocate memory. Checks the return value, aborts if no more
680 * memory is available. Don't use GNUNET_xmalloc_ directly. Use the
681 * GNUNET_malloc macro.
682 * The memory will be zero'ed out.
684 * @param size number of bytes to allocate
685 * @param filename where is this call being made (for debugging)
686 * @param linenumber line where this call is being made (for debugging)
687 * @return allocated memory, never NULL
690 GNUNET_xmalloc_ (size_t size, const char *filename, int linenumber);
694 * Allocate and initialize memory. Checks the return value, aborts if no more
695 * memory is available. Don't use GNUNET_xmemdup_ directly. Use the
696 * GNUNET_memdup macro.
698 * @param buf buffer to initialize from (must contain size bytes)
699 * @param size number of bytes to allocate
700 * @param filename where is this call being made (for debugging)
701 * @param linenumber line where this call is being made (for debugging)
702 * @return allocated memory, never NULL
705 GNUNET_xmemdup_ (const void *buf, size_t size, const char *filename,
710 * Allocate memory. This function does not check if the allocation
711 * request is within reasonable bounds, allowing allocations larger
712 * than 40 MB. If you don't expect the possibility of very large
713 * allocations, use GNUNET_malloc instead. The memory will be zero'ed
716 * @param size number of bytes to allocate
717 * @param filename where is this call being made (for debugging)
718 * @param linenumber line where this call is being made (for debugging)
719 * @return pointer to size bytes of memory, NULL if we do not have enough memory
722 GNUNET_xmalloc_unchecked_ (size_t size, const char *filename, int linenumber);
725 * Reallocate memory. Checks the return value, aborts if no more
726 * memory is available.
729 GNUNET_xrealloc_ (void *ptr, size_t n, const char *filename, int linenumber);
732 * Free memory. Merely a wrapper for the case that we
733 * want to keep track of allocations. Don't use GNUNET_xfree_
734 * directly. Use the GNUNET_free macro.
736 * @param ptr pointer to memory to free
737 * @param filename where is this call being made (for debugging)
738 * @param linenumber line where this call is being made (for debugging)
741 GNUNET_xfree_ (void *ptr, const char *filename, int linenumber);
745 * Dup a string. Don't call GNUNET_xstrdup_ directly. Use the GNUNET_strdup macro.
746 * @param str string to duplicate
747 * @param filename where is this call being made (for debugging)
748 * @param linenumber line where this call is being made (for debugging)
749 * @return the duplicated string
752 GNUNET_xstrdup_ (const char *str, const char *filename, int linenumber);
755 * Dup partially a string. Don't call GNUNET_xstrndup_ directly. Use the GNUNET_strndup macro.
757 * @param str string to duplicate
758 * @param len length of the string to duplicate
759 * @param filename where is this call being made (for debugging)
760 * @param linenumber line where this call is being made (for debugging)
761 * @return the duplicated string
764 GNUNET_xstrndup_ (const char *str, size_t len, const char *filename,
768 * Grow an array, the new elements are zeroed out.
769 * Grows old by (*oldCount-newCount)*elementSize
770 * bytes and sets *oldCount to newCount.
772 * Don't call GNUNET_xgrow_ directly. Use the GNUNET_array_grow macro.
774 * @param old address of the pointer to the array
776 * @param elementSize the size of the elements of the array
777 * @param oldCount address of the number of elements in the *old array
778 * @param newCount number of elements in the new array, may be 0 (then *old will be NULL afterwards)
779 * @param filename where is this call being made (for debugging)
780 * @param linenumber line where this call is being made (for debugging)
783 GNUNET_xgrow_ (void **old, size_t elementSize, unsigned int *oldCount,
784 unsigned int newCount, const char *filename, int linenumber);
788 * Create a copy of the given message.
790 * @param msg message to copy
791 * @return duplicate of the message
793 struct GNUNET_MessageHeader *
794 GNUNET_copy_message (const struct GNUNET_MessageHeader *msg);
797 #if __STDC_VERSION__ < 199901L
799 #define __func__ __FUNCTION__
801 #define __func__ "<unknown>"
805 #endif /*GNUNET_COMMON_H_ */