[176] | 1 | /* -*- C++ -*- */ |
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| 2 | |
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| 3 | #ifndef _LOGHEAP_H_ |
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| 4 | #define _LOGHEAP_H_ |
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| 5 | |
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| 6 | /** |
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| 7 | * @file logheap.h |
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| 8 | * @brief Contains the implementations of Log and LogHeap. |
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| 9 | */ |
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| 10 | |
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| 11 | #include <assert.h> |
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| 12 | #include <math.h> |
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| 13 | #include <limits.h> |
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| 14 | |
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| 15 | // UNIX-specific for now... |
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| 16 | #include <unistd.h> |
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| 17 | |
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| 18 | #include <fstream> |
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| 19 | #include <ios> |
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| 20 | |
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| 21 | |
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| 22 | using namespace std; |
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| 23 | |
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| 24 | namespace HL { |
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| 25 | |
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| 26 | template <class Obj> |
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| 27 | class Log { |
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| 28 | public: |
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| 29 | |
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| 30 | enum { MAX_ENTRIES = 300000 }; |
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| 31 | |
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| 32 | Log (void) : |
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| 33 | numEntries (0) |
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| 34 | { |
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| 35 | sprintf (filename, "theLog-%d", getpid()); |
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| 36 | } |
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| 37 | |
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| 38 | ~Log (void) { |
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| 39 | // writeLog(); |
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| 40 | } |
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| 41 | |
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| 42 | void writeLog (void) { |
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| 43 | { |
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| 44 | ofstream outfile (filename, ios_base::app); |
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| 45 | } |
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| 46 | write(filename); |
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| 47 | } |
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| 48 | |
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| 49 | void dump (void) { |
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| 50 | write (filename); |
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| 51 | numEntries = 0; |
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| 52 | } |
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| 53 | |
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| 54 | int append (const Obj& o) { |
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| 55 | if (numEntries < MAX_ENTRIES) { |
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| 56 | entries[numEntries] = o; |
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| 57 | numEntries++; |
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| 58 | return 1; |
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| 59 | } else { |
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| 60 | return 0; |
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| 61 | } |
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| 62 | } |
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| 63 | |
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| 64 | void write (char * fname) { |
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| 65 | ofstream outfile (fname, ios_base::app); |
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| 66 | for (int i = 0; i < numEntries; i++) { |
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| 67 | outfile << entries[i] << endl; |
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| 68 | } |
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| 69 | } |
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| 70 | |
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| 71 | private: |
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| 72 | |
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| 73 | int numEntries; |
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| 74 | Obj entries[MAX_ENTRIES]; |
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| 75 | char filename[255]; |
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| 76 | }; |
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| 77 | |
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| 78 | |
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| 79 | template <class SuperHeap> |
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| 80 | class LogHeap : public SuperHeap { |
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| 81 | public: |
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| 82 | |
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| 83 | LogHeap (void) |
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| 84 | : allDone (false) |
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| 85 | {} |
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| 86 | |
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| 87 | inline void * malloc (size_t sz) { |
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| 88 | void * ptr = SuperHeap::malloc (sz); |
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| 89 | if (!allDone) { |
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| 90 | MemoryRequest m; |
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| 91 | m.malloc (ptr, sz); |
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| 92 | if (!log.append (m)) { |
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| 93 | allDone = true; |
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| 94 | log.dump(); |
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| 95 | log.append(m); |
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| 96 | allDone = false; |
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| 97 | } |
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| 98 | } |
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| 99 | return ptr; |
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| 100 | } |
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| 101 | |
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| 102 | void write (void) { |
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| 103 | allDone = true; |
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| 104 | log.writeLog(); |
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| 105 | } |
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| 106 | |
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| 107 | inline void free (void * ptr) { |
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| 108 | if (!allDone) { |
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| 109 | MemoryRequest m; |
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| 110 | m.free (ptr); |
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| 111 | log.append (m); |
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| 112 | } |
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| 113 | SuperHeap::free (ptr); |
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| 114 | } |
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| 115 | |
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| 116 | private: |
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| 117 | |
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| 118 | class MemoryRequest { |
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| 119 | public: |
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| 120 | |
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| 121 | MemoryRequest (void) |
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| 122 | : |
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| 123 | #if 0 |
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| 124 | _sec (LONG_MAX), |
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| 125 | _usec (LONG_MAX), |
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| 126 | #endif |
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| 127 | _size (0), |
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| 128 | _address (INVALID) |
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| 129 | {} |
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| 130 | |
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| 131 | enum { FREE_OP = 0, |
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| 132 | MALLOC_OP, |
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| 133 | REALLOC_OP, |
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| 134 | REFREE_OP, |
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| 135 | ALLOCATE_OP, |
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| 136 | DEALLOCATE_OP, |
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| 137 | INVALID |
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| 138 | }; |
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| 139 | |
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| 140 | friend std::ostream& operator<< (std::ostream& os, MemoryRequest& m) { |
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| 141 | switch (m.getType()) { |
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| 142 | case FREE_OP: |
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| 143 | os << "F\t" << (void *) m.getAddress(); |
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| 144 | break; |
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| 145 | case MALLOC_OP: |
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| 146 | os << "M\t" << m.getSize() << "\t" << (void *) m.getAddress(); |
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| 147 | break; |
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| 148 | default: |
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| 149 | abort(); |
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| 150 | } |
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| 151 | return os; |
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| 152 | } |
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| 153 | |
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| 154 | void malloc (void * addr, |
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| 155 | size_t sz) |
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| 156 | { |
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| 157 | assert ((((unsigned long) addr) & 7) == 0); |
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| 158 | _size = sz; |
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| 159 | _address = (unsigned long) addr | MALLOC_OP; |
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| 160 | // markTime (_sec, _usec); |
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| 161 | // printf ("malloc %d (%f)\n", sz, getTime()); |
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| 162 | } |
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| 163 | |
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| 164 | |
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| 165 | void free (void * addr) |
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| 166 | { |
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| 167 | assert ((((unsigned long) addr) & 7) == 0); |
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| 168 | _address = (unsigned long) addr | FREE_OP; |
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| 169 | // markTime (_sec, _usec); |
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| 170 | // printf ("free %d (%f)\n", _address, getTime()); |
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| 171 | } |
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| 172 | |
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| 173 | |
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| 174 | void allocate (int sz) |
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| 175 | { |
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| 176 | _address = ALLOCATE_OP; |
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| 177 | _size = sz; |
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| 178 | markTime (_sec, _usec); |
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| 179 | // printf ("allocate %d (%f)\n", sz, getTime()); |
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| 180 | } |
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| 181 | |
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| 182 | |
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| 183 | void deallocate (int sz) |
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| 184 | { |
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| 185 | _address = DEALLOCATE_OP; |
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| 186 | _size = sz; |
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| 187 | markTime (_sec, _usec); |
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| 188 | // printf ("allocate %d (%f)\n", sz, getTime()); |
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| 189 | } |
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| 190 | |
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| 191 | |
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| 192 | // Set sec & usec to the current time. |
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| 193 | void markTime (long& sec, long& usec) |
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| 194 | { |
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| 195 | #if 0 |
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| 196 | #ifdef __SVR4 // Solaris |
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| 197 | hrtime_t t; |
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| 198 | t = gethrtime(); |
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| 199 | sec = *((long *) &t); |
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| 200 | usec = *((long *) &t + 1); |
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| 201 | #else |
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| 202 | struct timeval tv; |
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| 203 | struct timezone tz; |
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| 204 | gettimeofday (&tv, &tz); |
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| 205 | sec = tv.tv_sec; |
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| 206 | usec = tv.tv_usec; |
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| 207 | #endif |
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| 208 | #endif |
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| 209 | } |
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| 210 | |
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| 211 | int getType (void) { |
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| 212 | return _address & 7; |
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| 213 | } |
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| 214 | |
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| 215 | int getAllocated (void) { |
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| 216 | return _size; |
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| 217 | } |
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| 218 | |
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| 219 | int getDeallocated (void) { |
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| 220 | return _size; |
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| 221 | } |
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| 222 | |
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| 223 | unsigned long getAddress (void) { |
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| 224 | return _address & ~7; |
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| 225 | } |
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| 226 | |
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| 227 | int getSize (void) { |
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| 228 | return _size; |
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| 229 | } |
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| 230 | |
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| 231 | #if 0 |
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| 232 | double getTime (void) { |
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| 233 | return (double) _sec + (double) _usec / 1000000.0; |
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| 234 | } |
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| 235 | |
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| 236 | long getSeconds (void) { |
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| 237 | return _sec; |
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| 238 | } |
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| 239 | |
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| 240 | long getUseconds (void) { |
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| 241 | return _usec; |
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| 242 | } |
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| 243 | |
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| 244 | friend int operator< (MemoryRequest& m, MemoryRequest& n) { |
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| 245 | return ((m._sec < n._sec) |
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| 246 | || ((m._sec == n._sec) |
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| 247 | && (m._usec < n._usec))); |
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| 248 | } |
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| 249 | |
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| 250 | friend int operator== (MemoryRequest& m, MemoryRequest& n) { |
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| 251 | return ((m._sec == n._sec) && (m._usec == n._usec)); |
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| 252 | } |
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| 253 | #endif |
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| 254 | |
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| 255 | private: |
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| 256 | int _size; // in bytes |
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| 257 | unsigned long _address; // The address returned by malloc/realloc |
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| 258 | #if 1 |
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| 259 | long _sec; // seconds as returned by gettimeofday |
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| 260 | long _usec; // microseconds as returned by gettimeofday |
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| 261 | #endif |
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| 262 | }; |
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| 263 | |
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| 264 | Log<MemoryRequest> log; |
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| 265 | |
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| 266 | bool allDone; |
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| 267 | |
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| 268 | |
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| 269 | }; |
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| 270 | |
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| 271 | } |
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| 272 | |
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| 273 | #endif // _LOGHEAP_H_ |
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