/*
This file is part of GNUnet.
- (C) 2006, 2009 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2006-2013 GNUnet e.V.
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 2, or (at your
- option) any later version.
+ GNUnet is free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
+ Affero General Public License for more details.
*/
/**
*
* @author Christian Grothoff
* @author Nils Durner
+ *
+ * @defgroup logging Logging
+ * @see [Documentation](https://gnunet.org/logging)
+ *
+ * @defgroup memory Memory management
*/
#ifndef GNUNET_COMMON_H
#define GNUNET_COMMON_H
#include <stdarg.h>
#endif
+#ifdef HAVE_BYTESWAP_H
+#include <byteswap.h>
+#endif
+
+#ifdef __cplusplus
+extern "C"
+{
+#if 0 /* keep Emacsens' auto-indent happy */
+}
+#endif
+#endif
+
/**
* Version of the API (for entire gnunetutil.so library).
*/
-#define GNUNET_UTIL_VERSION 0x00090000
+#define GNUNET_UTIL_VERSION 0x000A0102
-/**
- * Name used for "services" that are actually command-line
- * programs invoked by the end user.
- */
-#define GNUNET_CLIENT_SERVICE_NAME "client"
/**
- * Named constants for return values. The following
- * invariants hold: "GNUNET_NO == 0" (to allow "if (GNUNET_NO)")
- * "GNUNET_OK != GNUNET_SYSERR", "GNUNET_OK != GNUNET_NO", "GNUNET_NO != GNUNET_SYSERR"
- * and finally "GNUNET_YES != GNUNET_NO".
+ * Named constants for return values. The following invariants hold:
+ * `GNUNET_NO == 0` (to allow `if (GNUNET_NO)`) `GNUNET_OK !=
+ * GNUNET_SYSERR`, `GNUNET_OK != GNUNET_NO`, `GNUNET_NO !=
+ * GNUNET_SYSERR` and finally `GNUNET_YES != GNUNET_NO`.
*/
#define GNUNET_OK 1
#define GNUNET_SYSERR -1
#define GNUNET_MAX(a,b) (((a) > (b)) ? (a) : (b))
+/* some systems use one underscore only, and mingw uses no underscore... */
+#ifndef __BYTE_ORDER
+#ifdef _BYTE_ORDER
+#define __BYTE_ORDER _BYTE_ORDER
+#else
+#ifdef BYTE_ORDER
+#define __BYTE_ORDER BYTE_ORDER
+#endif
+#endif
+#endif
+#ifndef __BIG_ENDIAN
+#ifdef _BIG_ENDIAN
+#define __BIG_ENDIAN _BIG_ENDIAN
+#else
+#ifdef BIG_ENDIAN
+#define __BIG_ENDIAN BIG_ENDIAN
+#endif
+#endif
+#endif
+#ifndef __LITTLE_ENDIAN
+#ifdef _LITTLE_ENDIAN
+#define __LITTLE_ENDIAN _LITTLE_ENDIAN
+#else
+#ifdef LITTLE_ENDIAN
+#define __LITTLE_ENDIAN LITTLE_ENDIAN
+#endif
+#endif
+#endif
+
+/**
+ * @ingroup logging
+ * define #GNUNET_EXTRA_LOGGING if using this header outside the GNUnet source
+ * tree where gnunet_config.h is unavailable
+ */
+#ifndef GNUNET_EXTRA_LOGGING
+#define GNUNET_EXTRA_LOGGING 0
+#endif
+
/**
* Endian operations
*/
# define GNUNET_htole64(x) (x)
# define GNUNET_be64toh(x) __bswap_64 (x)
# define GNUNET_le64toh(x) (x)
+#endif
# if __BYTE_ORDER == __BIG_ENDIAN
# define GNUNET_htobe16(x) (x)
# define GNUNET_htole16(x) __bswap_16 (x)
# define GNUNET_htole64(x) __bswap_64 (x)
# define GNUNET_be64toh(x) (x)
# define GNUNET_le64toh(x) __bswap_64 (x)
-# endif
#endif
+/**
+ * Macro used to avoid using 0 for the length of a variable-size
+ * array (Non-Zero-Length).
+ *
+ * Basically, C standard says that "int[n] x;" is undefined if n=0.
+ * This was supposed to prevent issues with pointer aliasing.
+ * However, C compilers may conclude that n!=0 as n=0 would be
+ * undefined, and then optimize under the assumption n!=0, which
+ * could cause actual issues. Hence, when initializing an array
+ * on the stack with a variable-length that might be zero, write
+ * "int[GNUNET_NZL(n)] x;" instead of "int[n] x".
+ */
+#define GNUNET_NZL(l) GNUNET_MAX(1,l)
+
/**
* gcc-ism to get packed structs.
*/
#define GNUNET_PACKED __attribute__((packed))
+/**
+ * gcc-ism to get gcc bitfield layout when compiling with -mms-bitfields
+ */
+#if MINGW
+#define GNUNET_GCC_STRUCT_LAYOUT __attribute__((gcc_struct))
+#else
+#define GNUNET_GCC_STRUCT_LAYOUT
+#endif
+
+/**
+ * gcc-ism to force alignment; we use this to align char-arrays
+ * that may then be cast to 'struct's. See also gcc
+ * bug #33594.
+ */
+#ifdef __BIGGEST_ALIGNMENT__
+#define GNUNET_ALIGN __attribute__((aligned (__BIGGEST_ALIGNMENT__)))
+#else
+#define GNUNET_ALIGN __attribute__((aligned (8)))
+#endif
+
/**
* gcc-ism to document unused arguments
*/
#define GNUNET_UNUSED __attribute__((unused))
+/**
+ * gcc-ism to document functions that don't return
+ */
+#define GNUNET_NORETURN __attribute__((noreturn))
+
+#if MINGW
+#if __GNUC__ > 3
+/**
+ * gcc 4.x-ism to pack structures even on W32 (to be used before structs);
+ * Using this would cause structs to be unaligned on the stack on Sparc,
+ * so we *only* use this on W32 (see #670578 from Debian); fortunately,
+ * W32 doesn't run on sparc anyway.
+ */
+#define GNUNET_NETWORK_STRUCT_BEGIN \
+ _Pragma("pack(push)") \
+ _Pragma("pack(1)")
+
+/**
+ * gcc 4.x-ism to pack structures even on W32 (to be used after structs)
+ * Using this would cause structs to be unaligned on the stack on Sparc,
+ * so we *only* use this on W32 (see #670578 from Debian); fortunately,
+ * W32 doesn't run on sparc anyway.
+ */
+#define GNUNET_NETWORK_STRUCT_END _Pragma("pack(pop)")
+
+#else
+#error gcc 4.x or higher required on W32 systems
+#endif
+#else
+/**
+ * Define as empty, GNUNET_PACKED should suffice, but this won't work on W32
+ */
+#define GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Define as empty, GNUNET_PACKED should suffice, but this won't work on W32;
+ */
+#define GNUNET_NETWORK_STRUCT_END
+#endif
/* ************************ super-general types *********************** */
+GNUNET_NETWORK_STRUCT_BEGIN
+
/**
* Header for all communications.
*/
/**
- * @brief 512-bit hashcode
+ * Answer from service to client about last operation.
*/
-typedef struct
+struct GNUNET_OperationResultMessage
{
- uint32_t bits[512 / 8 / sizeof (uint32_t)]; /* = 16 */
-}
-GNUNET_HashCode;
+ struct GNUNET_MessageHeader header;
+ uint32_t reserved GNUNET_PACKED;
-/**
- * The identity of the host (basically the SHA-512 hashcode of
- * it's public key).
- */
-struct GNUNET_PeerIdentity
-{
- GNUNET_HashCode hashPubKey GNUNET_PACKED;
+ /**
+ * Operation ID.
+ */
+ uint64_t op_id GNUNET_PACKED;
+
+ /**
+ * Status code for the operation.
+ */
+ uint64_t result_code GNUNET_PACKED;
+
+ /* Followed by data. */
};
+GNUNET_NETWORK_STRUCT_END
/**
* Function called with a filename.
*
* @param cls closure
* @param filename complete filename (absolute path)
- * @return GNUNET_OK to continue to iterate,
- * GNUNET_SYSERR to abort iteration with error!
+ * @return #GNUNET_OK to continue to iterate,
+ * #GNUNET_NO to stop iteration with no error,
+ * #GNUNET_SYSERR to abort iteration with error!
+ */
+typedef int
+(*GNUNET_FileNameCallback) (void *cls,
+ const char *filename);
+
+
+/**
+ * Generic continuation callback.
+ *
+ * @param cls Closure.
*/
-typedef int (*GNUNET_FileNameCallback) (void *cls, const char *filename);
+typedef void
+(*GNUNET_ContinuationCallback) (void *cls);
+
+
+/**
+ * Function called with the result of an asynchronous operation.
+ *
+ * @param cls
+ * Closure.
+ * @param result_code
+ * Result code for the operation.
+ * @param data
+ * Data result for the operation.
+ * @param data_size
+ * Size of @a data.
+ */
+typedef void
+(*GNUNET_ResultCallback) (void *cls, int64_t result_code,
+ const void *data, uint16_t data_size);
/* ****************************** logging ***************************** */
/**
+ * @ingroup logging
* Types of errors.
*/
enum GNUNET_ErrorType
GNUNET_ERROR_TYPE_NONE = 0,
GNUNET_ERROR_TYPE_ERROR = 1,
GNUNET_ERROR_TYPE_WARNING = 2,
- GNUNET_ERROR_TYPE_INFO = 4,
- GNUNET_ERROR_TYPE_DEBUG = 8,
- GNUNET_ERROR_TYPE_INVALID = 16,
- GNUNET_ERROR_TYPE_BULK = 32
+ /* UX: We need a message type that is output by
+ * default without looking like there is a problem.
+ */
+ GNUNET_ERROR_TYPE_MESSAGE = 4,
+ GNUNET_ERROR_TYPE_INFO = 8,
+ GNUNET_ERROR_TYPE_DEBUG = 16,
+ GNUNET_ERROR_TYPE_INVALID = 32,
+ GNUNET_ERROR_TYPE_BULK = 64
};
/**
+ * @ingroup logging
* User-defined handler for log messages.
*
* @param cls closure
* @param date when was the message logged?
* @param message what is the message
*/
-typedef void (*GNUNET_Logger) (void *cls, enum GNUNET_ErrorType kind,
- const char *component, const char *date,
- const char *message);
+typedef void
+(*GNUNET_Logger) (void *cls,
+ enum GNUNET_ErrorType kind,
+ const char *component,
+ const char *date,
+ const char *message);
/**
- * Number of log calls to ignore.
+ * @ingroup logging
+ * Get the number of log calls that are going to be skipped
+ *
+ * @return number of log calls to be ignored
*/
-extern unsigned int skip_log;
+int
+GNUNET_get_log_skip (void);
+
#if !defined(GNUNET_CULL_LOGGING)
int
-GNUNET_get_log_call_status (int caller_level, const char *comp,
- const char *file, const char *function, int line);
+GNUNET_get_log_call_status (int caller_level,
+ const char *comp,
+ const char *file,
+ const char *function,
+ int line);
#endif
+
+
/**
+ * @ingroup logging
* Main log function.
*
* @param kind how serious is the error?
* @param ... arguments for format string
*/
void
-GNUNET_log_nocheck (enum GNUNET_ErrorType kind, const char *message, ...);
+GNUNET_log_nocheck (enum GNUNET_ErrorType kind, const char *message, ...)
+ __attribute__ ((format (gnu_printf, 2, 3)));
/* from glib */
#if defined(__GNUC__) && (__GNUC__ > 2) && defined(__OPTIMIZE__)
#define GNUNET_LOG_CALL_STATUS -1
#endif
+
/**
+ * @ingroup logging
* Log function that specifies an alternative component.
* This function should be used by plugins.
*
#if !defined(GNUNET_CULL_LOGGING)
#define GNUNET_log_from(kind,comp,...) do { int log_line = __LINE__;\
static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
- if (GN_UNLIKELY(log_call_enabled == -1))\
- log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), comp, __FILE__, __FUNCTION__, log_line);\
- if (GN_UNLIKELY(skip_log > 0)) {skip_log--;}\
- else {\
- if (GN_UNLIKELY(log_call_enabled))\
- GNUNET_log_from_nocheck (kind, comp, __VA_ARGS__);\
+ if ((GNUNET_EXTRA_LOGGING > 0) || ((GNUNET_ERROR_TYPE_DEBUG & (kind)) == 0)) { \
+ if (GN_UNLIKELY(log_call_enabled == -1))\
+ log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), (comp), __FILE__, __FUNCTION__, log_line); \
+ if (GN_UNLIKELY(GNUNET_get_log_skip () > 0)) { GNUNET_log_skip (-1, GNUNET_NO); }\
+ else {\
+ if (GN_UNLIKELY(log_call_enabled))\
+ GNUNET_log_from_nocheck ((kind), comp, __VA_ARGS__); \
+ }\
}\
} while (0)
-#define GNUNET_log(kind,...) do { int log_line = __LINE__;\
+ #define GNUNET_log(kind,...) do { int log_line = __LINE__;\
static int log_call_enabled = GNUNET_LOG_CALL_STATUS;\
- if (GN_UNLIKELY(log_call_enabled == -1))\
- log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), NULL, __FILE__, __FUNCTION__, log_line);\
- if (GN_UNLIKELY(skip_log > 0)) {skip_log--;}\
- else {\
- if (GN_UNLIKELY(log_call_enabled))\
- GNUNET_log_nocheck (kind, __VA_ARGS__);\
+ if ((GNUNET_EXTRA_LOGGING > 0) || ((GNUNET_ERROR_TYPE_DEBUG & (kind)) == 0)) { \
+ if (GN_UNLIKELY(log_call_enabled == -1))\
+ log_call_enabled = GNUNET_get_log_call_status ((kind) & (~GNUNET_ERROR_TYPE_BULK), NULL, __FILE__, __FUNCTION__, log_line);\
+ if (GN_UNLIKELY(GNUNET_get_log_skip () > 0)) { GNUNET_log_skip (-1, GNUNET_NO); }\
+ else {\
+ if (GN_UNLIKELY(log_call_enabled))\
+ GNUNET_log_nocheck ((kind), __VA_ARGS__); \
+ }\
}\
} while (0)
#else
/**
+ * @ingroup logging
+ * Log error message about missing configuration option.
+ *
+ * @param kind log level
+ * @param section section with missing option
+ * @param option name of missing option
+ */
+void
+GNUNET_log_config_missing (enum GNUNET_ErrorType kind,
+ const char *section,
+ const char *option);
+
+
+/**
+ * @ingroup logging
+ * Log error message about invalid configuration option value.
+ *
+ * @param kind log level
+ * @param section section with invalid option
+ * @param option name of invalid option
+ * @param required what is required that is invalid about the option
+ */
+void
+GNUNET_log_config_invalid (enum GNUNET_ErrorType kind,
+ const char *section,
+ const char *option,
+ const char *required);
+
+
+/**
+ * @ingroup logging
* Abort the process, generate a core dump if possible.
+ * Most code should use `GNUNET_assert (0)` instead to
+ * first log the location of the failure.
*/
void
-GNUNET_abort (void);
+GNUNET_abort_ (void) GNUNET_NORETURN;
+
/**
- * Ignore the next n calls to the log function.
+ * @ingroup logging
+ * Ignore the next @a n calls to the log function.
*
- * @param n number of log calls to ignore
- * @param check_reset GNUNET_YES to assert that the log skip counter is currently zero
+ * @param n number of log calls to ignore (could be negative)
+ * @param check_reset #GNUNET_YES to assert that the log skip counter is currently zero
*/
void
-GNUNET_log_skip (unsigned int n, int check_reset);
+GNUNET_log_skip (int n,
+ int check_reset);
/**
+ * @ingroup logging
* Setup logging.
*
* @param comp default component to use
* @param loglevel what types of messages should be logged
* @param logfile change logging to logfile (use NULL to keep stderr)
- * @return GNUNET_OK on success, GNUNET_SYSERR if logfile could not be opened
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR if logfile could not be opened
*/
int
-GNUNET_log_setup (const char *comp, const char *loglevel, const char *logfile);
+GNUNET_log_setup (const char *comp,
+ const char *loglevel,
+ const char *logfile);
/**
- * Add a custom logger.
+ * @ingroup logging
+ * Add a custom logger. Note that installing any custom logger
+ * will disable the standard logger. When multiple custom loggers
+ * are installed, all will be called. The standard logger will
+ * only be used if no custom loggers are present.
*
* @param logger log function
- * @param logger_cls closure for logger
+ * @param logger_cls closure for @a logger
*/
void
-GNUNET_logger_add (GNUNET_Logger logger, void *logger_cls);
+GNUNET_logger_add (GNUNET_Logger logger,
+ void *logger_cls);
/**
+ * @ingroup logging
* Remove a custom logger.
*
* @param logger log function
- * @param logger_cls closure for logger
+ * @param logger_cls closure for @a logger
*/
void
-GNUNET_logger_remove (GNUNET_Logger logger, void *logger_cls);
+GNUNET_logger_remove (GNUNET_Logger logger,
+ void *logger_cls);
/**
+ * @ingroup logging
+ * Convert a short hash value to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param shc the hash code
+ * @return string
+ */
+const char *
+GNUNET_sh2s (const struct GNUNET_ShortHashCode *shc);
+
+
+/**
+ * @ingroup logging
* Convert a hash value to a string (for printing debug messages).
* This is one of the very few calls in the entire API that is
* NOT reentrant!
* @return string
*/
const char *
-GNUNET_h2s (const GNUNET_HashCode * hc);
+GNUNET_h2s (const struct GNUNET_HashCode *hc);
/**
+ * @ingroup logging
+ * Convert a hash value to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant! Identical to #GNUNET_h2s(), except that another
+ * buffer is used so both #GNUNET_h2s() and #GNUNET_h2s2() can be
+ * used within the same log statement.
+ *
+ * @param hc the hash code
+ * @return string
+ */
+const char *
+GNUNET_h2s2 (const struct GNUNET_HashCode *hc);
+
+
+/**
+ * @ingroup logging
* Convert a hash value to a string (for printing debug messages).
* This prints all 104 characters of a hashcode!
* This is one of the very few calls in the entire API that is
* @return string
*/
const char *
-GNUNET_h2s_full (const GNUNET_HashCode * hc);
+GNUNET_h2s_full (const struct GNUNET_HashCode *hc);
+
+
+/**
+ * Public key. Details in gnunet_util_crypto.h.
+ */
+struct GNUNET_CRYPTO_EddsaPublicKey;
+
+
+/**
+ * Public key. Details in gnunet_util_crypto.h.
+ */
+struct GNUNET_CRYPTO_EcdhePublicKey;
+
+
+/**
+ * @ingroup logging
+ * Convert a public key value to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param hc the hash code
+ * @return string
+ */
+const char *
+GNUNET_p2s (const struct GNUNET_CRYPTO_EddsaPublicKey *p);
/**
+ * @ingroup logging
+ * Convert a public key value to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param hc the hash code
+ * @return string
+ */
+const char *
+GNUNET_p2s2 (const struct GNUNET_CRYPTO_EddsaPublicKey *p);
+
+
+/**
+ * @ingroup logging
+ * Convert a public key value to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param hc the hash code
+ * @return string
+ */
+const char *
+GNUNET_e2s (const struct GNUNET_CRYPTO_EcdhePublicKey *p);
+
+
+/**
+ * @ingroup logging
+ * Convert a public key value to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param hc the hash code
+ * @return string
+ */
+const char *
+GNUNET_e2s2 (const struct GNUNET_CRYPTO_EcdhePublicKey *p);
+
+
+/**
+ * @ingroup logging
* Convert a peer identity to a string (for printing debug messages).
* This is one of the very few calls in the entire API that is
* NOT reentrant!
*
* @param pid the peer identity
* @return string form of the pid; will be overwritten by next
- * call to GNUNET_i2s.
+ * call to #GNUNET_i2s().
*/
const char *
GNUNET_i2s (const struct GNUNET_PeerIdentity *pid);
/**
+ * @ingroup logging
+ * Convert a peer identity to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant! Identical to #GNUNET_i2s(), except that another
+ * buffer is used so both #GNUNET_i2s() and #GNUNET_i2s2() can be
+ * used within the same log statement.
+ *
+ * @param pid the peer identity
+ * @return string form of the pid; will be overwritten by next
+ * call to #GNUNET_i2s().
+ */
+const char *
+GNUNET_i2s2 (const struct GNUNET_PeerIdentity *pid);
+
+
+/**
+ * @ingroup logging
+ * Convert a peer identity to a string (for printing debug messages).
+ * This is one of the very few calls in the entire API that is
+ * NOT reentrant!
+ *
+ * @param pid the peer identity
+ * @return string form of the pid; will be overwritten by next
+ * call to #GNUNET_i2s_full().
+ */
+const char *
+GNUNET_i2s_full (const struct GNUNET_PeerIdentity *pid);
+
+
+/**
+ * @ingroup logging
* Convert a "struct sockaddr*" (IPv4 or IPv6 address) to a string
* (for printing debug messages). This is one of the very few calls
* in the entire API that is NOT reentrant!
*
* @param addr the address
- * @param addrlen the length of the address
+ * @param addrlen the length of the @a addr
* @return nicely formatted string for the address
- * will be overwritten by next call to GNUNET_a2s.
+ * will be overwritten by next call to #GNUNET_a2s().
*/
const char *
-GNUNET_a2s (const struct sockaddr *addr, socklen_t addrlen);
+GNUNET_a2s (const struct sockaddr *addr,
+ socklen_t addrlen);
+
/**
+ * @ingroup logging
* Convert error type to string.
*
* @param kind type to convert
/**
+ * @ingroup logging
* Use this for fatal errors that cannot be handled
*/
-#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)
+#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)
+
/**
+ * @ingroup logging
* Use this for fatal errors that cannot be handled
*/
-#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)
+#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)
+
/**
+ * @ingroup logging
+ * Use this for fatal errors that cannot be handled
+ *
+ * @param cond Condition to evaluate
+ * @param comp Component string to use for logging
+ */
+#define GNUNET_assert_from(cond, comp) do { if (! (cond)) { GNUNET_log_from(GNUNET_ERROR_TYPE_ERROR, comp, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); GNUNET_abort_(); } } while(0)
+
+
+/**
+ * @ingroup logging
* Use this for internal assertion violations that are
* not fatal (can be handled) but should not occur.
*/
#define GNUNET_break(cond) do { if (! (cond)) { GNUNET_log(GNUNET_ERROR_TYPE_ERROR, _("Assertion failed at %s:%d.\n"), __FILE__, __LINE__); } } while(0)
+
/**
+ * @ingroup logging
* Use this for assertion violations caused by other
* peers (i.e. protocol violations). We do not want to
* confuse end-users (say, some other peer runs an
*/
#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)
+
/**
+ * @ingroup logging
* Log an error message at log-level 'level' that indicates
* a failure of the command 'cmd' with the message given
* by strerror(errno).
*/
#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)
+
/**
+ * @ingroup logging
* Log an error message at log-level 'level' that indicates
* a failure of the command 'cmd' with the message given
* by strerror(errno).
*/
#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)
+
/**
+ * @ingroup logging
* Log an error message at log-level 'level' that indicates
* a failure of the command 'cmd' with the message given
* by strerror(errno).
*/
-#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)
+#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)
+
/**
+ * @ingroup logging
* Log an error message at log-level 'level' that indicates
* a failure of the command 'cmd' with the message given
* by strerror(errno).
/* ************************* endianess conversion ****************** */
/**
- * Convert unsigned 64-bit integer to host-byte-order.
- * @param n the value in network byte order
- * @return the same value in host byte order
+ * Convert unsigned 64-bit integer to network byte order.
+ *
+ * @param n
+ * The value in host byte order.
+ *
+ * @return The same value in network byte order.
*/
uint64_t
-GNUNET_ntohll (uint64_t n);
+GNUNET_htonll (uint64_t n);
+
/**
- * Convert unsigned 64-bit integer to network-byte-order.
- * @param n the value in host byte order
- * @return the same value in network byte order
+ * Convert unsigned 64-bit integer to host byte order.
+ *
+ * @param n
+ * The value in network byte order.
+ *
+ * @return The same value in host byte order.
*/
uint64_t
-GNUNET_htonll (uint64_t n);
+GNUNET_ntohll (uint64_t n);
+
+
+/**
+ * Convert double to network byte order.
+ *
+ * @param d
+ * The value in host byte order.
+ *
+ * @return The same value in network byte order.
+ */
+double
+GNUNET_hton_double (double d);
+
+
+/**
+ * Convert double to host byte order
+ *
+ * @param d
+ * The value in network byte order.
+ *
+ * @return The same value in host byte order.
+ */
+double
+GNUNET_ntoh_double (double d);
/* ************************* allocation functions ****************** */
/**
+ * @ingroup memory
* Maximum allocation with GNUNET_malloc macro.
*/
#define GNUNET_MAX_MALLOC_CHECKED (1024 * 1024 * 40)
/**
+ * @ingroup memory
+ * Allocate a struct or union of the given @a type.
+ * Wrapper around #GNUNET_malloc that returns a pointer
+ * to the newly created object of the correct type.
+ *
+ * @param type name of the struct or union, i.e. pass 'struct Foo'.
+ */
+#define GNUNET_new(type) (type *) GNUNET_malloc (sizeof (type))
+
+/**
+ * Call memcpy() but check for @a n being 0 first. In the latter
+ * case, it is now safe to pass NULL for @a src or @a dst.
+ * Unlike traditional memcpy(), returns nothing.
+ *
+ * @param dst destination of the copy, may be NULL if @a n is zero
+ * @param src source of the copy, may be NULL if @a n is zero
+ * @param n number of bytes to copy
+ */
+#define GNUNET_memcpy(dst,src,n) do { if (0 != n) { (void) memcpy (dst,src,n); } } while (0)
+
+
+/**
+ * @ingroup memory
+ * Allocate a size @a n array with structs or unions of the given @a type.
+ * Wrapper around #GNUNET_malloc that returns a pointer
+ * to the newly created objects of the correct type.
+ *
+ * @param n number of elements in the array
+ * @param type name of the struct or union, i.e. pass 'struct Foo'.
+ */
+#define GNUNET_new_array(n, type) (type *) GNUNET_malloc ((n) * sizeof (type))
+
+/**
+ * @ingroup memory
+ * Allocate a size @a n times @a m array
+ * with structs or unions of the given @a type.
+ *
+ * @param n size of the first dimension
+ * @param m size of the second dimension
+ * @param type name of the struct or union, i.e. pass 'struct Foo'.
+ */
+#define GNUNET_new_array_2d(n, m, type) (type **) GNUNET_xnew_array_2d_ (n, m, sizeof (type), __FILE__, __LINE__)
+
+/**
+ * @ingroup memory
+ * Allocate a size @a n times @a m times @a o array
+ * with structs or unions of the given @a type.
+ *
+ * @param n size of the first dimension
+ * @param m size of the second dimension
+ * @param o size of the third dimension
+ * @param type name of the struct or union, i.e. pass 'struct Foo'.
+ */
+#define GNUNET_new_array_3d(n, m, o, type) (type ***) GNUNET_xnew_array_3d_ (n, m, o, sizeof (type), __FILE__, __LINE__)
+
+/**
+ * @ingroup memory
* Wrapper around malloc. Allocates size bytes of memory.
* The memory will be zero'ed out.
*
#define GNUNET_malloc(size) GNUNET_xmalloc_(size, __FILE__, __LINE__)
/**
+ * @ingroup memory
* Allocate and initialize a block of memory.
*
* @param buf data to initalize the block with
#define GNUNET_memdup(buf,size) GNUNET_xmemdup_(buf, size, __FILE__, __LINE__)
/**
+ * @ingroup memory
* Wrapper around malloc. Allocates size bytes of memory.
* The memory will be zero'ed out.
*
#define GNUNET_malloc_large(size) GNUNET_xmalloc_unchecked_(size, __FILE__, __LINE__)
/**
- * Wrapper around realloc. Rellocates size bytes of memory.
+ * @ingroup memory
+ * Wrapper around realloc. Reallocates size bytes of memory.
+ * The content of the intersection of the new and old size will be unchanged.
*
* @param ptr the pointer to reallocate
* @param size the number of bytes to reallocate
#define GNUNET_realloc(ptr, size) GNUNET_xrealloc_(ptr, size, __FILE__, __LINE__)
/**
+ * @ingroup memory
* Wrapper around free. Frees the memory referred to by ptr.
- * Note that is is generally better to free memory that was
- * allocated with GNUNET_array_grow using GNUNET_array_grow(mem, size, 0) instead of GNUNET_free.
+ * Note that it is generally better to free memory that was
+ * allocated with #GNUNET_array_grow using #GNUNET_array_grow(mem, size, 0) instead of #GNUNET_free.
*
* @param ptr location where to free the memory. ptr must have
- * been returned by GNUNET_strdup, GNUNET_strndup, GNUNET_malloc or GNUNET_array_grow earlier.
+ * been returned by #GNUNET_strdup, #GNUNET_strndup, #GNUNET_malloc or #GNUNET_array_grow earlier.
*/
#define GNUNET_free(ptr) GNUNET_xfree_(ptr, __FILE__, __LINE__)
/**
+ * @ingroup memory
* Free the memory pointed to by ptr if ptr is not NULL.
- * Equivalent to if (ptr!=null)GNUNET_free(ptr).
+ * Equivalent to `if (NULL != ptr) GNUNET_free(ptr)`.
*
* @param ptr the location in memory to free
*/
#define GNUNET_free_non_null(ptr) do { void * __x__ = ptr; if (__x__ != NULL) { GNUNET_free(__x__); } } while(0)
/**
- * Wrapper around GNUNET_strdup. Makes a copy of the zero-terminated string
+ * @ingroup memory
+ * Wrapper around #GNUNET_xstrdup_. Makes a copy of the zero-terminated string
* pointed to by a.
*
* @param a pointer to a zero-terminated string
#define GNUNET_strdup(a) GNUNET_xstrdup_(a,__FILE__,__LINE__)
/**
- * Wrapper around GNUNET_strndup. Makes a partial copy of the string
+ * @ingroup memory
+ * Wrapper around #GNUNET_xstrndup_. Makes a partial copy of the string
* pointed to by a.
*
* @param a pointer to a string
#define GNUNET_strndup(a,length) GNUNET_xstrndup_(a,length,__FILE__,__LINE__)
/**
+ * @ingroup memory
* Grow a well-typed (!) array. This is a convenience
- * method to grow a vector <tt>arr</tt> of size <tt>size</tt>
- * to the new (target) size <tt>tsize</tt>.
+ * method to grow a vector @a arr of size @a size
+ * to the new (target) size @a tsize.
* <p>
*
* Example (simple, well-typed stack):
*
* static void push(struct foo * elem) {
* GNUNET_array_grow(myVector, myVecLen, myVecLen+1);
- * memcpy(&myVector[myVecLen-1], elem, sizeof(struct foo));
+ * GNUNET_memcpy(&myVector[myVecLen-1], elem, sizeof(struct foo));
* }
*
* static void pop(struct foo * elem) {
* if (myVecLen == 0) die();
- * memcpy(elem, myVector[myVecLen-1], sizeof(struct foo));
+ * GNUNET_memcpy(elem, myVector[myVecLen-1], sizeof(struct foo));
* GNUNET_array_grow(myVector, myVecLen, myVecLen-1);
* }
* </pre>
* arr is important since size is the number of elements and
* not the size in bytes
* @param size the number of elements in the existing vector (number
- * of elements to copy over)
+ * of elements to copy over), will be updated with the new
+ * array size
* @param tsize the target size for the resulting vector, use 0 to
* free the vector (then, arr will be NULL afterwards).
*/
#define GNUNET_array_grow(arr,size,tsize) GNUNET_xgrow_((void**)&arr, sizeof(arr[0]), &size, tsize, __FILE__, __LINE__)
/**
- * Append an element to a list (growing the
- * list by one).
+ * @ingroup memory
+ * Append an element to a list (growing the list by one).
+ *
+ * @param arr base-pointer of the vector, may be NULL if size is 0;
+ * will be updated to reflect the new address. The TYPE of
+ * arr is important since size is the number of elements and
+ * not the size in bytes
+ * @param size the number of elements in the existing vector (number
+ * of elements to copy over), will be updated with the new
+ * array size
+ * @param element the element that will be appended to the array
*/
#define GNUNET_array_append(arr,size,element) do { GNUNET_array_grow(arr,size,size+1); arr[size-1] = element; } while(0)
/**
+ * @ingroup memory
* Like snprintf, just aborts if the buffer is of insufficient size.
*
* @param buf pointer to buffer that is written to
- * @param size number of bytes in buf
+ * @param size number of bytes in @a buf
* @param format format strings
* @param ... data for format string
* @return number of bytes written to buf or negative value on error
/**
+ * @ingroup memory
* Like asprintf, just portable.
*
* @param buf set to a buffer of sufficient size (allocated, caller must free)
/**
* Allocate memory. Checks the return value, aborts if no more
* memory is available. Don't use GNUNET_xmalloc_ directly. Use the
- * GNUNET_malloc macro.
+ * #GNUNET_malloc macro.
* The memory will be zero'ed out.
*
* @param size number of bytes to allocate
GNUNET_xmalloc_ (size_t size, const char *filename, int linenumber);
+/**
+ * Allocate memory for a two dimensional array in one block
+ * and set up pointers. Aborts if no more memory is available.
+ * Don't use GNUNET_xnew_array_2d_ directly. Use the
+ * #GNUNET_new_array_2d macro.
+ * The memory of the elements will be zero'ed out.
+ *
+ * @param n size of the first dimension
+ * @param m size of the second dimension
+ * @param elementSize size of a single element in bytes
+ * @param filename where is this call being made (for debugging)
+ * @param linenumber line where this call is being made (for debugging)
+ * @return allocated memory, never NULL
+ */
+void **
+GNUNET_xnew_array_2d_ (size_t n, size_t m, size_t elementSize,
+ const char *filename, int linenumber);
+
+
+/**
+ * Allocate memory for a three dimensional array in one block
+ * and set up pointers. Aborts if no more memory is available.
+ * Don't use GNUNET_xnew_array_3d_ directly. Use the
+ * #GNUNET_new_array_3d macro.
+ * The memory of the elements will be zero'ed out.
+ *
+ * @param n size of the first dimension
+ * @param m size of the second dimension
+ * @param o size of the third dimension
+ * @param elementSize size of a single element in bytes
+ * @param filename where is this call being made (for debugging)
+ * @param linenumber line where this call is being made (for debugging)
+ * @return allocated memory, never NULL
+ */
+void ***
+GNUNET_xnew_array_3d_ (size_t n, size_t m, size_t o, size_t elementSize,
+ const char *filename, int linenumber);
+
+
/**
* Allocate and initialize memory. Checks the return value, aborts if no more
* memory is available. Don't use GNUNET_xmemdup_ directly. Use the
- * GNUNET_memdup macro.
+ * #GNUNET_memdup macro.
*
* @param buf buffer to initialize from (must contain size bytes)
* @param size number of bytes to allocate
* Allocate memory. This function does not check if the allocation
* request is within reasonable bounds, allowing allocations larger
* than 40 MB. If you don't expect the possibility of very large
- * allocations, use GNUNET_malloc instead. The memory will be zero'ed
+ * allocations, use #GNUNET_malloc instead. The memory will be zero'ed
* out.
*
* @param size number of bytes to allocate
void *
GNUNET_xmalloc_unchecked_ (size_t size, const char *filename, int linenumber);
+
/**
* Reallocate memory. Checks the return value, aborts if no more
* memory is available.
void *
GNUNET_xrealloc_ (void *ptr, size_t n, const char *filename, int linenumber);
+
/**
* Free memory. Merely a wrapper for the case that we
* want to keep track of allocations. Don't use GNUNET_xfree_
- * directly. Use the GNUNET_free macro.
+ * directly. Use the #GNUNET_free macro.
*
* @param ptr pointer to memory to free
* @param filename where is this call being made (for debugging)
/**
- * Dup a string. Don't call GNUNET_xstrdup_ directly. Use the GNUNET_strdup macro.
+ * Dup a string. Don't call GNUNET_xstrdup_ directly. Use the #GNUNET_strdup macro.
* @param str string to duplicate
* @param filename where is this call being made (for debugging)
* @param linenumber line where this call is being made (for debugging)
GNUNET_xstrdup_ (const char *str, const char *filename, int linenumber);
/**
- * Dup partially a string. Don't call GNUNET_xstrndup_ directly. Use the GNUNET_strndup macro.
+ * Dup partially a string. Don't call GNUNET_xstrndup_ directly. Use the #GNUNET_strndup macro.
*
* @param str string to duplicate
* @param len length of the string to duplicate
* Grows old by (*oldCount-newCount)*elementSize
* bytes and sets *oldCount to newCount.
*
- * Don't call GNUNET_xgrow_ directly. Use the GNUNET_array_grow macro.
+ * Don't call GNUNET_xgrow_ directly. Use the #GNUNET_array_grow macro.
*
* @param old address of the pointer to the array
* *old may be NULL
/**
+ * @ingroup memory
* Create a copy of the given message.
*
* @param msg message to copy
#endif
#endif
-#endif /*GNUNET_COMMON_H_ */
+
+/**
+ * Valid task priorities. Use these, do not pass random integers!
+ * For various reasons (#3862 -- building with QT Creator, and
+ * our restricted cross-compilation with emscripten) this cannot
+ * be in gnunet_scheduler_lib.h, but it works if we declare it here.
+ * Naturally, logically this is part of the scheduler.
+ */
+enum GNUNET_SCHEDULER_Priority
+{
+ /**
+ * Run with the same priority as the current job.
+ */
+ GNUNET_SCHEDULER_PRIORITY_KEEP = 0,
+
+ /**
+ * Run when otherwise idle.
+ */
+ GNUNET_SCHEDULER_PRIORITY_IDLE = 1,
+
+ /**
+ * Run as background job (higher than idle,
+ * lower than default).
+ */
+ GNUNET_SCHEDULER_PRIORITY_BACKGROUND = 2,
+
+ /**
+ * Run with the default priority (normal
+ * P2P operations). Any task that is scheduled
+ * without an explicit priority being specified
+ * will run with this priority.
+ */
+ GNUNET_SCHEDULER_PRIORITY_DEFAULT = 3,
+
+ /**
+ * Run with high priority (important requests).
+ * Higher than DEFAULT.
+ */
+ GNUNET_SCHEDULER_PRIORITY_HIGH = 4,
+
+ /**
+ * Run with priority for interactive tasks.
+ * Higher than "HIGH".
+ */
+ GNUNET_SCHEDULER_PRIORITY_UI = 5,
+
+ /**
+ * Run with priority for urgent tasks. Use
+ * for things like aborts and shutdowns that
+ * need to preempt "UI"-level tasks.
+ * Higher than "UI".
+ */
+ GNUNET_SCHEDULER_PRIORITY_URGENT = 6,
+
+ /**
+ * This is an internal priority level that is only used for tasks
+ * that are being triggered due to shutdown (they have automatically
+ * highest priority). User code must not use this priority level
+ * directly. Tasks run with this priority level that internally
+ * schedule other tasks will see their original priority level
+ * be inherited (unless otherwise specified).
+ */
+ GNUNET_SCHEDULER_PRIORITY_SHUTDOWN = 7,
+
+ /**
+ * Number of priorities (must be the last priority).
+ * This priority must not be used by clients.
+ */
+ GNUNET_SCHEDULER_PRIORITY_COUNT = 8
+};
+
+
+#if 0 /* keep Emacsens' auto-indent happy */
+{
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* GNUNET_COMMON_H */
projects / oweals / gnunet.git / blobdiff