| 1 | /* |
| 2 | * Copyright (C) 2016 Michael Jeanson <mjeanson@efficios.com> |
| 3 | * |
| 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 5 | * of this software and associated documentation files (the "Software"), to deal |
| 6 | * in the Software without restriction, including without limitation the rights |
| 7 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 8 | * copies of the Software, and to permit persons to whom the Software is |
| 9 | * furnished to do so, subject to the following conditions: |
| 10 | * |
| 11 | * The above copyright notice and this permission notice shall be included in |
| 12 | * all copies or substantial portions of the Software. |
| 13 | * |
| 14 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 15 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| 17 | * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 18 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 19 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| 20 | * SOFTWARE. |
| 21 | */ |
| 22 | |
| 23 | #ifndef _COMPAT_TIME_H |
| 24 | #define _COMPAT_TIME_H |
| 25 | |
| 26 | #include <time.h> |
| 27 | |
| 28 | #ifdef __APPLE__ |
| 29 | |
| 30 | typedef uint64_t timer_t; |
| 31 | |
| 32 | #include <mach/mach.h> |
| 33 | #include <mach/clock.h> |
| 34 | #include <errno.h> |
| 35 | |
| 36 | #undef NSEC_PER_SEC |
| 37 | #undef NSEC_PER_MSEC |
| 38 | #undef NSEC_PER_USEC |
| 39 | |
| 40 | #endif /* __APPLE__ */ |
| 41 | |
| 42 | /* macOS/OS X 10.12 (Sierra) and up provide clock_gettime() */ |
| 43 | #if defined(__APPLE__) && !defined(LTTNG_HAVE_CLOCK_GETTIME) |
| 44 | |
| 45 | typedef int clockid_t; |
| 46 | #define CLOCK_REALTIME CALENDAR_CLOCK |
| 47 | #define CLOCK_MONOTONIC SYSTEM_CLOCK |
| 48 | |
| 49 | static inline |
| 50 | int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp) |
| 51 | { |
| 52 | int ret = 0; |
| 53 | clock_serv_t clock; |
| 54 | mach_timespec_t now; |
| 55 | |
| 56 | if (clk_id != CLOCK_REALTIME && clk_id != CLOCK_MONOTONIC) { |
| 57 | ret = -1; |
| 58 | errno = EINVAL; |
| 59 | goto end; |
| 60 | } |
| 61 | |
| 62 | host_get_clock_service(mach_host_self(), clk_id, &clock); |
| 63 | |
| 64 | ret = clock_get_time(clock, &now); |
| 65 | if (ret != KERN_SUCCESS) { |
| 66 | ret = -1; |
| 67 | goto deallocate; |
| 68 | } |
| 69 | |
| 70 | tp->tv_sec = now.tv_sec; |
| 71 | tp->tv_nsec = now.tv_nsec; |
| 72 | |
| 73 | deallocate: |
| 74 | mach_port_deallocate(mach_task_self(), clock); |
| 75 | end: |
| 76 | return ret; |
| 77 | } |
| 78 | |
| 79 | #else /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */ |
| 80 | |
| 81 | static inline |
| 82 | int lttng_clock_gettime(clockid_t clk_id, struct timespec *tp) |
| 83 | { |
| 84 | return clock_gettime(clk_id, tp); |
| 85 | } |
| 86 | |
| 87 | #endif /* __APPLE__ && !LTTNG_HAVE_CLOCK_GETTIME */ |
| 88 | |
| 89 | #endif /* _COMPAT_TIME_H */ |