Fix: stale dnode caching instance cause locked-up upon accessing (#52)

[lunaix-os.git] / lunaix-os / includes / lunaix / spike.h

diff --git a/lunaix-os/includes/lunaix/spike.h b/lunaix-os/includes/lunaix/spike.h
index 6cece75784b807cd6c5e32a60d11a948edac5e54..b2a335b00d50cf57906f6314a035985060540684 100644 (file)
--- a/lunaix-os/includes/lunaix/spike.h
+++ b/lunaix-os/includes/lunaix/spike.h
@@ -1,7 +1,9 @@
 #ifndef __LUNAIX_SPIKE_H
 #define __LUNAIX_SPIKE_H
 
-// Some helper functions. As helpful as Spike the Dragon! :)
+#include <lunaix/compiler.h>
+
+/** Some helper functions. As helpful as Spike the Dragon! :) **/
 
 // 除法 v/(2^k) 向上取整
 #define CEIL(v, k) (((v) + (1 << (k)) - 1) >> (k))
@@ -20,13 +22,15 @@
 #define MIN(a, b) ((a) < (b) ? (a) : (b))
 #define MAX(a, b) ((a) > (b) ? (a) : (b))
 
+#define is_pot(val) (((val) != 0) || ((val) & ((val)-1)) == 0)
+
 /**
  * @brief Fast log base 2 for integer, utilizing constant unfolding.
  * Adopted from
  * https://elixir.bootlin.com/linux/v4.4/source/include/linux/log2.h#L85
  *
  */
-#define ILOG2(x)                                                               \
+#define ilog2(x)                                                               \
     (__builtin_constant_p(x) ? ((x) == 0              ? 0                      \
                                 : ((x) & (1ul << 31)) ? 31                     \
                                 : ((x) & (1ul << 30)) ? 30                     \
@@ -60,44 +64,56 @@
                                 : ((x) & (1ul << 2))  ? 2                      \
                                 : ((x) & (1ul << 1))  ? 1                      \
                                                       : 0)                      \
-                             : (31 - __builtin_clz(x)))
+                             : (msbiti - clz(x)))
 
-#define __USER__ __attribute__((section(".usrtext")))
-
-inline static void
-spin()
-{
-    while (1)
-        ;
-}
+#define llog2(x)   (msbitl - clzl(x))
 
-#ifndef __LUNAIXOS_NASSERT__
+#ifndef CONFIG_NO_ASSERT
 #define assert(cond)                                                           \
-    if (!(cond)) {                                                             \
-        __assert_fail(#cond, __FILE__, __LINE__);                              \
-    }
+    do {                                                                       \
+        if (unlikely(!(cond))) {                                                \
+            __assert_fail(#cond, __FILE__, __LINE__);                          \
+        }                                                                      \
+    } while(0)
+
+#define assert_p(cond, prefix)                                                 \
+    do {                                                                       \
+        if (unlikely(!(cond))) {                                               \
+            __assert_fail(prefix ": " #cond, __FILE__, __LINE__);              \
+        }                                                                      \
+    } while(0)
 
 #define assert_msg(cond, msg)                                                  \
-    if (!(cond)) {                                                             \
-        __assert_fail(msg, __FILE__, __LINE__);                                \
-    }
+    do {                                                                       \
+        if (unlikely(!(cond))) {                                               \
+            __assert_fail(msg, __FILE__, __LINE__);                            \
+        }                                                                      \
+    } while(0)
+
+#define assert_msg_p(cond, prefix, msg)                                        \
+    do {                                                                       \
+        if (unlikely(!(cond))) {                                               \
+            __assert_fail(prefix ":" msg, __FILE__, __LINE__);                     \
+        }                                                                      \
+    } while(0)
+
+#define must_success(statement)                                                \
+    do {                                                                       \
+        int err = (statement);                                                 \
+        if (err) fail(#statement " failed");                                   \
+    } while(0)
 
 #define fail(msg) __assert_fail(msg, __FILE__, __LINE__);
+#define fail_p(msg, prefix) fail(prefix msg);
 
 void
 __assert_fail(const char* expr, const char* file, unsigned int line)
-  __attribute__((noinline, noreturn));
+    __attribute__((noinline, noreturn));
 #else
 #define assert(cond) (void)(cond);          // assert nothing
 #define assert_msg(cond, msg) (void)(cond); // assert nothing
 
-#endif // __LUNAIXOS_NASSERT__
-
-void
-panick(const char* msg);
-
-void
-panickf(const char* fmt, ...);
+#endif // CONFIG_NO_ASSERT
 
 #define wait_until(cond)                                                       \
     while (!(cond))                                                            \