X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=lib%2Flibrte_eal%2Fcommon%2Finclude%2Frte_common.h;h=069c13ec73033befe3d78a0d507175e11a980016;hb=c842d1c3b0df74066c951464f6ba2d67205d918b;hp=8f04518f71318f5b863f47eda47b22d22631fa65;hpb=f779053ab37adf731558b4b758b5058a28bb33f8;p=dpdk.git

diff --git a/lib/librte_eal/common/include/rte_common.h b/lib/librte_eal/common/include/rte_common.h
index 8f04518f71..069c13ec73 100644
--- a/lib/librte_eal/common/include/rte_common.h
+++ b/lib/librte_eal/common/include/rte_common.h
@@ -83,10 +83,24 @@ typedef uint16_t unaligned_uint16_t;
 
 #define RTE_PRIORITY_LOG 101
 #define RTE_PRIORITY_BUS 110
+#define RTE_PRIORITY_CLASS 120
+#define RTE_PRIORITY_LAST 65535
 
 #define RTE_PRIO(prio) \
 	RTE_PRIORITY_ ## prio
 
+/**
+ * Run function before main() with high priority.
+ *
+ * @param func
+ *   Constructor function.
+ * @param prio
+ *   Priority number must be above 100.
+ *   Lowest number is the first to run.
+ */
+#define RTE_INIT_PRIO(func, prio) \
+static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)
+
 /**
  * Run function before main() with low priority.
  *
@@ -96,19 +110,30 @@ typedef uint16_t unaligned_uint16_t;
  *   Constructor function.
  */
 #define RTE_INIT(func) \
-static void __attribute__((constructor, used)) func(void)
+	RTE_INIT_PRIO(func, LAST)
 
 /**
- * Run function before main() with high priority.
+ * Run after main() with low priority.
  *
  * @param func
- *   Constructor function.
+ *   Destructor function name.
  * @param prio
  *   Priority number must be above 100.
- *   Lowest number is the first to run.
+ *   Lowest number is the last to run.
  */
-#define RTE_INIT_PRIO(func, prio) \
-static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)
+#define RTE_FINI_PRIO(func, prio) \
+static void __attribute__((destructor(RTE_PRIO(prio)), used)) func(void)
+
+/**
+ * Run after main() with high priority.
+ *
+ * The destructor will be run *before* prioritized destructors.
+ *
+ * @param func
+ *   Destructor function name.
+ */
+#define RTE_FINI(func) \
+	RTE_FINI_PRIO(func, LAST)
 
 /**
  * Force a function to be inlined
@@ -123,7 +148,7 @@ static void __attribute__((constructor(RTE_PRIO(prio)), used)) func(void)
 /*********** Macros for pointer arithmetic ********/
 
 /**
- * add a byte-value offset from a pointer
+ * add a byte-value offset to a pointer
  */
 #define RTE_PTR_ADD(ptr, x) ((void*)((uintptr_t)(ptr) + (x)))
 
@@ -292,6 +317,11 @@ rte_combine64ms1b(register uint64_t v)
 
 /*********** Macros to work with powers of 2 ********/
 
+/**
+ * Macro to return 1 if n is a power of 2, 0 otherwise
+ */
+#define RTE_IS_POWER_OF_2(n) ((n) && !(((n) - 1) & (n)))
+
 /**
  * Returns true if n is a power of 2
  * @param n
@@ -412,7 +442,7 @@ rte_align64prevpow2(uint64_t v)
 static inline uint32_t
 rte_bsf32(uint32_t v)
 {
-	return __builtin_ctz(v);
+	return (uint32_t)__builtin_ctz(v);
 }
 
 /**