/*
* The UCW Library -- Miscellaneous Functions
*
- * (c) 1997--2009 Martin Mares <mj@ucw.cz>
- * (c) 2005 Tomas Valla <tom@ucw.cz>
+ * (c) 1997--2014 Martin Mares <mj@ucw.cz>
+ * (c) 2005--2014 Tomas Valla <tom@ucw.cz>
* (c) 2006 Robert Spalek <robert@ucw.cz>
* (c) 2007 Pavel Charvat <pchar@ucw.cz>
*
#include <ucw/config.h>
#include <stdarg.h>
+#include <stdbool.h>
+
+#ifdef CONFIG_UCW_CLEAN_ABI
+#define assert_failed ucw_assert_failed
+#define assert_failed_msg ucw_assert_failed_msg
+#define assert_failed_noinfo ucw_assert_failed_noinfo
+#define big_alloc ucw_big_alloc
+#define big_alloc_zero ucw_big_alloc_zero
+#define big_free ucw_big_free
+#define die ucw_die
+#define log_die_hook ucw_log_die_hook
+#define log_file ucw_log_file
+#define log_fork ucw_log_fork
+#define log_init ucw_log_init
+#define log_pid ucw_log_pid
+#define log_title ucw_log_title
+#define msg ucw_msg
+#define page_alloc ucw_page_alloc
+#define page_alloc_zero ucw_page_alloc_zero
+#define page_free ucw_page_free
+#define page_realloc ucw_page_realloc
+#define random_max ucw_random_max
+#define random_max_u64 ucw_random_max_u64
+#define random_u32 ucw_random_u32
+#define random_u64 ucw_random_u64
+#define vdie ucw_vdie
+#define vmsg ucw_vmsg
+#define xfree ucw_xfree
+#define xmalloc ucw_xmalloc
+#define xmalloc_zero ucw_xmalloc_zero
+#define xrealloc ucw_xrealloc
+#define xstrdup ucw_xstrdup
+#endif
/*** === Macros for handling structures, offsets and alignment ***/
#define CHECK_PTR_TYPE(x, type) ((x)-(type)(x) + (type)(x)) /** Check that a pointer @x is of type @type. Fail compilation if not. **/
#define PTR_TO(s, i) &((s*)0)->i /** Return OFFSETOF() in form of a pointer. **/
-#define OFFSETOF(s, i) ((uns)offsetof(s, i)) /** Offset of item @i from the start of structure @s **/
+#define OFFSETOF(s, i) ((uint)offsetof(s, i)) /** Offset of item @i from the start of structure @s **/
#define SKIP_BACK(s, i, p) ((s *)((char *)p - OFFSETOF(s, i))) /** Given a pointer @p to item @i of structure @s, return a pointer to the start of the struct. **/
/** Align an integer @s to the nearest higher multiple of @a (which should be a power of two) **/
#define COMPARE_LT(x,y) do { if ((x)<(y)) return 1; if ((x)>(y)) return 0; } while(0)
#define COMPARE_GT(x,y) COMPARE_LT(y,x)
-#define ROL(x, bits) (((x) << (bits)) | ((uns)(x) >> (sizeof(uns)*8 - (bits)))) /** Bitwise rotation of an unsigned int to the left **/
-#define ROR(x, bits) (((uns)(x) >> (bits)) | ((x) << (sizeof(uns)*8 - (bits)))) /** Bitwise rotation of an unsigned int to the right **/
+#define ROL(x, bits) (((x) << (bits)) | ((uint)(x) >> (sizeof(uint)*8 - (bits)))) /** Bitwise rotation of an unsigned int to the left **/
+#define ROR(x, bits) (((uint)(x) >> (bits)) | ((x) << (sizeof(uint)*8 - (bits)))) /** Bitwise rotation of an unsigned int to the right **/
/*** === Shortcuts for GCC Extensions ***/
#define NONRET __attribute__((noreturn)) /** Function does not return **/
#define UNUSED __attribute__((unused)) /** Variable/parameter is knowingly unused **/
#define CONSTRUCTOR __attribute__((constructor)) /** Call function upon start of program **/
+#define CONSTRUCTOR_WITH_PRIORITY(p) __attribute__((constructor(p))) /** Define constructor with a given priority **/
#define PACKED __attribute__((packed)) /** Structure should be packed **/
#define CONST __attribute__((const)) /** Function depends only on arguments **/
#define PURE __attribute__((pure)) /** Function depends only on arguments and global vars **/
* This is the basic printf-like function for logging a message.
* The @flags contain the log level and possibly other flag bits (like `L_SIGHANDLER`).
**/
-void msg(uns flags, const char *fmt, ...) FORMAT_CHECK(printf,2,3);
-void vmsg(uns flags, const char *fmt, va_list args); /** A vararg version of msg(). **/
+void msg(uint flags, const char *fmt, ...) FORMAT_CHECK(printf,2,3);
+void vmsg(uint flags, const char *fmt, va_list args); /** A vararg version of msg(). **/
void die(const char *, ...) NONRET FORMAT_CHECK(printf,1,2); /** Log a fatal error message and exit the program. **/
void vdie(const char *fmt, va_list args) NONRET; /** va_list version of die() **/
extern char *log_title; /** An optional log message title. Set to program name by log_init(). **/
extern int log_pid; /** An optional PID printed in each log message. Set to 0 if it shouldn't be logged. **/
-extern void (*log_die_hook)(void); /** An optional function called just before die() exists. **/
+extern void (*log_die_hook)(void); /** An optional function called just before die() exists. **/ // API: log_die_hook
void log_init(const char *argv0); /** Set @log_title to the program name extracted from @argv[0]. **/
void log_fork(void); /** Call after fork() to update @log_pid. **/
void log_file(const char *name); /** Establish logging to the named file. Also redirect stderr there. **/
void assert_failed(const char *assertion, const char *file, int line) NONRET;
+void assert_failed_msg(const char *assertion, const char *file, int line, const char *fmt, ...) NONRET FORMAT_CHECK(printf,4,5);
void assert_failed_noinfo(void) NONRET;
#ifdef DEBUG_ASSERTS
* Assertion checks are compiled only when `DEBUG_ASSERTS` is defined.
**/
#define ASSERT(x) ({ if (unlikely(!(x))) assert_failed(#x, __FILE__, __LINE__); 1; })
+
+/**
+ * Check an assertion with a debug message. If the condition @cond is false,
+ * print the message and stop the program with fatal error.
+ * Assertion checks are compiled only when `DEBUG_ASSERTS` is defined.
+ **/
+#define ASSERT_MSG(cond,str,x...) ({ if (unlikely(!(cond))) assert_failed_msg(#cond, __FILE__, __LINE__, str,##x); 1; })
+
#else
#define ASSERT(x) ({ if (__builtin_constant_p(x) && !(x)) assert_failed_noinfo(); 1; })
+#define ASSERT_MSG(cond,str,x...) ASSERT(cond)
#endif
#define COMPILE_ASSERT(name,x) typedef char _COMPILE_ASSERT_##name[!!(x)-1]
#ifdef LOCAL_DEBUG
#define DBG(x,y...) msg(L_DEBUG, x,##y) /** If `LOCAL_DEBUG` is defined before including <ucw/lib.h>, log a debug message. Otherwise do nothing. **/
+/**
+ * If `LOCAL_DEBUG` is defined before including <ucw/lib.h>, log current
+ * file name and line number. Otherwise do nothing.
+ **/
+#define DBG_SPOT msg(L_DEBUG, "%s:%d (%s)", __FILE__, __LINE__, __func__)
#else
#define DBG(x,y...) do { } while(0)
+#define DBG_SPOT do { } while(0)
#endif
#ifdef DEBUG_ASSERTS
/*** === Random numbers (random.c) ***/
-uns random_u32(void); /** Return a pseudorandom 32-bit number. **/
-uns random_max(uns max); /** Return a pseudorandom 32-bit number in range [0,@max). **/
+uint random_u32(void); /** Return a pseudorandom 32-bit number. **/
+uint random_max(uint max); /** Return a pseudorandom 32-bit number in range [0,@max). **/
u64 random_u64(void); /** Return a pseudorandom 64-bit number. **/
u64 random_max_u64(u64 max); /** Return a pseudorandom 64-bit number in range [0,@max). **/