[PATCH 07/50] mars: add new file include/linux/brick/brick_checking.h

Thomas Schoebel-Theuer
2014-07-01T21:47:47Z

include/linux/brick/brick_checking.h | 88 ++++++++++++++++++++++++++++++++++++
1 file changed, 88 insertions(+)
create mode 100644 include/linux/brick/brick_checking.h

diff --git a/include/linux/brick/brick_checking.h b/include/linux/brick/brick_checking.h
new file mode 100644
index 0000000..e5d107d
--- /dev/null
+++ b/include/linux/brick/brick_checking.h
@@ -0,0 +1,88 @@
+/* (c) 2010 Thomas Schoebel-Theuer / 1&1 Internet AG */
+#ifndef BRICK_CHECKING_H
+#define BRICK_CHECKING_H
+
+/***********************************************************************/
+
+/* checking */
+
+#if defined(CONFIG_MARS_DEBUG) || defined(CONFIG_MARS_CHECKS)
+#define BRICK_CHECKING true
+#else
+#define BRICK_CHECKING false
+#endif
+
+#define _CHECK_ATOMIC(atom, OP, minval) \
+do { \
+ if (BRICK_CHECKING) { \
+ int __test = atomic_read(atom); \
+ if (unlikely(__test OP(minval))) { \
+ atomic_set(atom, minval); \
+ BRICK_ERR("%d: atomic " #atom " " #OP " " #minval " (%d)\n", __LINE__, __test);\
+ } \
+ } \
+} while (0)
+
+#define CHECK_ATOMIC(atom, minval) \
+ _CHECK_ATOMIC(atom, <, minval)
+
+#define CHECK_HEAD_EMPTY(head) \
+do { \
+ if (BRICK_CHECKING && unlikely(!list_empty(head) && (head)->next)) {\
+ list_del_init(head); \
+ BRICK_ERR("%d: list_head " #head " (%p) not empty\n", __LINE__, head);\
+ } \
+} while (0)
+
+#ifdef CONFIG_MARS_DEBUG_MEM
+#define CHECK_PTR_DEAD(ptr, label) \
+do { \
+ if (BRICK_CHECKING && unlikely((ptr) == (void *)0x5a5a5a5a5a5a5a5a)) {\
+ BRICK_FAT("%d: pointer '" #ptr "' is DEAD\n", __LINE__);\
+ goto label; \
+ } \
+} while (0)
+#else
+#define CHECK_PTR_DEAD(ptr, label) /*empty*/
+#endif
+
+#define CHECK_PTR_NULL(ptr, label) \
+do { \
+ CHECK_PTR_DEAD(ptr, label); \
+ if (BRICK_CHECKING && unlikely(!(ptr))) { \
+ BRICK_FAT("%d: pointer '" #ptr "' is NULL\n", __LINE__);\
+ goto label; \
+ } \
+} while (0)
+
+#ifdef CONFIG_MARS_DEBUG
+#define CHECK_PTR(ptr, label) \
+do { \
+ CHECK_PTR_NULL(ptr, label); \
+ if (BRICK_CHECKING && unlikely(!virt_addr_valid(ptr))) { \
+ BRICK_FAT("%d: pointer '" #ptr "' (%p) is no valid virtual KERNEL address\n", __LINE__, ptr);\
+ goto label; \
+ } \
+} while (0)
+#else
+#define CHECK_PTR(ptr, label) CHECK_PTR_NULL(ptr, label)
+#endif
+
+#define CHECK_ASPECT(a_ptr, o_ptr, label) \
+do { \
+ if (BRICK_CHECKING && unlikely((a_ptr)->object != o_ptr)) { \
+ BRICK_FAT("%d: aspect pointer '" #a_ptr "' (%p) belongs to object %p, not to " #o_ptr " (%p)\n",\
+ __LINE__, a_ptr, (a_ptr)->object, o_ptr); \
+ goto label; \
+ } \
+} while (0)
+
+#define _CHECK(ptr, label) \
+do { \
+ if (BRICK_CHECKING && unlikely(!(ptr))) { \
+ BRICK_FAT("%d: condition '" #ptr "' is VIOLATED\n", __LINE__);\
+ goto label; \
+ } \
+} while (0)
+
+#endif
--
2.0.0