Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 1 | #include "jemalloc/internal/jemalloc_internal.h" |
| 2 | |
| 3 | #define BILLION UINT64_C(1000000000) |
| 4 | |
| 5 | void |
| 6 | nstime_init(nstime_t *time, uint64_t ns) |
| 7 | { |
| 8 | |
| 9 | time->ns = ns; |
| 10 | } |
| 11 | |
| 12 | void |
| 13 | nstime_init2(nstime_t *time, uint64_t sec, uint64_t nsec) |
| 14 | { |
| 15 | |
| 16 | time->ns = sec * BILLION + nsec; |
| 17 | } |
| 18 | |
| 19 | uint64_t |
| 20 | nstime_ns(const nstime_t *time) |
| 21 | { |
| 22 | |
| 23 | return (time->ns); |
| 24 | } |
| 25 | |
| 26 | uint64_t |
| 27 | nstime_sec(const nstime_t *time) |
| 28 | { |
| 29 | |
| 30 | return (time->ns / BILLION); |
| 31 | } |
| 32 | |
| 33 | uint64_t |
| 34 | nstime_nsec(const nstime_t *time) |
| 35 | { |
| 36 | |
| 37 | return (time->ns % BILLION); |
| 38 | } |
| 39 | |
| 40 | void |
| 41 | nstime_copy(nstime_t *time, const nstime_t *source) |
| 42 | { |
| 43 | |
| 44 | *time = *source; |
| 45 | } |
| 46 | |
| 47 | int |
| 48 | nstime_compare(const nstime_t *a, const nstime_t *b) |
| 49 | { |
| 50 | |
| 51 | return ((a->ns > b->ns) - (a->ns < b->ns)); |
| 52 | } |
| 53 | |
| 54 | void |
| 55 | nstime_add(nstime_t *time, const nstime_t *addend) |
| 56 | { |
| 57 | |
| 58 | assert(UINT64_MAX - time->ns >= addend->ns); |
| 59 | |
| 60 | time->ns += addend->ns; |
| 61 | } |
| 62 | |
| 63 | void |
| 64 | nstime_subtract(nstime_t *time, const nstime_t *subtrahend) |
| 65 | { |
| 66 | |
| 67 | assert(nstime_compare(time, subtrahend) >= 0); |
| 68 | |
| 69 | time->ns -= subtrahend->ns; |
| 70 | } |
| 71 | |
| 72 | void |
| 73 | nstime_imultiply(nstime_t *time, uint64_t multiplier) |
| 74 | { |
| 75 | |
| 76 | assert((((time->ns | multiplier) & (UINT64_MAX << (sizeof(uint64_t) << |
| 77 | 2))) == 0) || ((time->ns * multiplier) / multiplier == time->ns)); |
| 78 | |
| 79 | time->ns *= multiplier; |
| 80 | } |
| 81 | |
| 82 | void |
| 83 | nstime_idivide(nstime_t *time, uint64_t divisor) |
| 84 | { |
| 85 | |
| 86 | assert(divisor != 0); |
| 87 | |
| 88 | time->ns /= divisor; |
| 89 | } |
| 90 | |
| 91 | uint64_t |
| 92 | nstime_divide(const nstime_t *time, const nstime_t *divisor) |
| 93 | { |
| 94 | |
| 95 | assert(divisor->ns != 0); |
| 96 | |
| 97 | return (time->ns / divisor->ns); |
| 98 | } |
| 99 | |
| 100 | #ifdef JEMALLOC_JET |
| 101 | #undef nstime_update |
Jason Evans | ab0cfe0 | 2016-04-18 15:11:20 -0700 | [diff] [blame] | 102 | #define nstime_update JEMALLOC_N(n_nstime_update) |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 103 | #endif |
| 104 | bool |
| 105 | nstime_update(nstime_t *time) |
| 106 | { |
| 107 | nstime_t old_time; |
| 108 | |
| 109 | nstime_copy(&old_time, time); |
| 110 | |
| 111 | #ifdef _WIN32 |
| 112 | { |
| 113 | FILETIME ft; |
| 114 | uint64_t ticks; |
| 115 | GetSystemTimeAsFileTime(&ft); |
| 116 | ticks = (((uint64_t)ft.dwHighDateTime) << 32) | |
| 117 | ft.dwLowDateTime; |
| 118 | time->ns = ticks * 100; |
| 119 | } |
| 120 | #elif JEMALLOC_CLOCK_GETTIME |
| 121 | { |
| 122 | struct timespec ts; |
| 123 | |
| 124 | if (sysconf(_SC_MONOTONIC_CLOCK) > 0) |
| 125 | clock_gettime(CLOCK_MONOTONIC, &ts); |
| 126 | else |
| 127 | clock_gettime(CLOCK_REALTIME, &ts); |
| 128 | time->ns = ts.tv_sec * BILLION + ts.tv_nsec; |
| 129 | } |
| 130 | #else |
| 131 | struct timeval tv; |
| 132 | gettimeofday(&tv, NULL); |
| 133 | time->ns = tv.tv_sec * BILLION + tv.tv_usec * 1000; |
| 134 | #endif |
| 135 | |
| 136 | /* Handle non-monotonic clocks. */ |
| 137 | if (unlikely(nstime_compare(&old_time, time) > 0)) { |
| 138 | nstime_copy(time, &old_time); |
| 139 | return (true); |
| 140 | } |
| 141 | |
| 142 | return (false); |
| 143 | } |
| 144 | #ifdef JEMALLOC_JET |
| 145 | #undef nstime_update |
| 146 | #define nstime_update JEMALLOC_N(nstime_update) |
Jason Evans | ab0cfe0 | 2016-04-18 15:11:20 -0700 | [diff] [blame] | 147 | nstime_update_t *nstime_update = JEMALLOC_N(n_nstime_update); |
Jason Evans | 9bad079 | 2016-02-21 11:25:02 -0800 | [diff] [blame] | 148 | #endif |