| 1 | // =============================================================== // |
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| 2 | // // |
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| 3 | // File : arb_debug.h // |
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| 4 | // Purpose : some debugging tools // |
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| 5 | // // |
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| 6 | // Coded by Ralf Westram (coder@reallysoft.de) in May 2007 // |
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| 7 | // Institute of Microbiology (Technical University Munich) // |
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| 8 | // http://www.arb-home.de/ // |
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| 9 | // // |
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| 10 | // =============================================================== // |
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| 11 | #ifndef ARB_DEBUG_H |
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| 12 | #define ARB_DEBUG_H |
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| 13 | |
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| 14 | #if defined(DEBUG) |
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| 15 | |
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| 16 | // if you get the valgrind warning |
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| 17 | // "Conditional jump or move depends on uninitialized value" |
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| 18 | // for a complex statement, use TEST_EXPR_INITIALIZED to find out |
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| 19 | // which part of the statement is the cause. |
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| 20 | |
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| 21 | #define TEST_EXPR_INITIALIZED(expr) do { \ |
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| 22 | static bool t_i_b; \ |
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| 23 | \ |
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| 24 | if (expr) t_i_b = false; \ |
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| 25 | else t_i_b = true; \ |
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| 26 | } while (0) |
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| 27 | |
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| 28 | |
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| 29 | template <int OFF, int SIZE> |
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| 30 | static void CHECK_CMEM_INITIALIZED(const char *ptr) { |
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| 31 | arb_assert(SIZE); // SIZE == 0 is invalid |
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| 32 | if (SIZE == 1) { |
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| 33 | TEST_EXPR_INITIALIZED(ptr[OFF]); |
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| 34 | } |
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| 35 | else { |
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| 36 | const int HALF = SIZE/2; |
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| 37 | CHECK_CMEM_INITIALIZED<OFF,HALF>(ptr); |
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| 38 | CHECK_CMEM_INITIALIZED<OFF+HALF,SIZE-HALF>(ptr); |
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| 39 | } |
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| 40 | } |
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| 41 | |
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| 42 | template <int SIZE> |
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| 43 | static void CHECK_MEM_INITIALIZED(const void *ptr) { |
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| 44 | CHECK_CMEM_INITIALIZED<0,SIZE>((const char*)ptr); |
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| 45 | } |
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| 46 | |
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| 47 | #define TEST_INITIALIZED(data) CHECK_MEM_INITIALIZED< sizeof(data) >( &(data) ) |
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| 48 | |
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| 49 | #else |
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| 50 | |
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| 51 | // create warning for forgotten debug code |
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| 52 | #define TEST_EXPR_INITIALIZED(expr) { int TEST_EXPR_INITIALIZED; } |
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| 53 | #define TEST_INITIALIZED(data) { int TEST_INITIALIZED; } |
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| 54 | #define THROW_VALGRIND_WARNING() { int THROW_VALGRIND_WARNING; } |
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| 55 | |
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| 56 | #endif // DEBUG |
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| 57 | |
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| 58 | #else |
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| 59 | #error arb_debug.h included twice |
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| 60 | #endif // ARB_DEBUG_H |
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| 61 | |
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