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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include <errno.h> | |
| 6 #include <time.h> | |
| 7 | |
| 8 #include "components/nacl/loader/nonsfi/abi_conversion.h" | |
| 9 #include "components/nacl/loader/nonsfi/irt_interfaces.h" | |
| 10 #include "native_client/src/trusted/service_runtime/include/sys/time.h" | |
| 11 | |
| 12 namespace nacl { | |
| 13 namespace nonsfi { | |
| 14 namespace { | |
| 15 | |
| 16 bool NaClAbiClockIdToClockId(nacl_irt_clockid_t nacl_clk_id, | |
| 17 clockid_t* host_clk_id) { | |
| 18 switch (nacl_clk_id) { | |
| 19 case NACL_ABI_CLOCK_REALTIME: | |
| 20 *host_clk_id = CLOCK_REALTIME; | |
| 21 break; | |
| 22 case NACL_ABI_CLOCK_MONOTONIC: | |
| 23 *host_clk_id = CLOCK_MONOTONIC; | |
| 24 break; | |
| 25 case NACL_ABI_CLOCK_PROCESS_CPUTIME_ID: | |
| 26 *host_clk_id = CLOCK_PROCESS_CPUTIME_ID; | |
| 27 break; | |
| 28 case NACL_ABI_CLOCK_THREAD_CPUTIME_ID: | |
| 29 *host_clk_id = CLOCK_THREAD_CPUTIME_ID; | |
| 30 break; | |
| 31 default: | |
| 32 // Unknown clock id. | |
| 33 return false; | |
| 34 } | |
| 35 return true; | |
| 36 } | |
| 37 | |
| 38 int IrtClockGetRes(nacl_irt_clockid_t clk_id, struct nacl_abi_timespec* res) { | |
| 39 clockid_t host_clk_id; | |
| 40 if (!NaClAbiClockIdToClockId(clk_id, &host_clk_id)) | |
| 41 return EINVAL; | |
| 42 | |
| 43 struct timespec host_res; | |
| 44 if (clock_getres(host_clk_id, &host_res)) | |
| 45 return errno; | |
| 46 | |
| 47 // clock_getres() requires a NULL check but clock_gettime() doesn't. | |
| 48 if (res) | |
| 49 TimeSpecToNaClAbiTimeSpec(host_res, res); | |
| 50 return 0; | |
| 51 } | |
| 52 | |
| 53 int IrtClockGetTime(nacl_irt_clockid_t clk_id, struct nacl_abi_timespec* tp) { | |
| 54 clockid_t host_clk_id; | |
| 55 if (!NaClAbiClockIdToClockId(clk_id, &host_clk_id)) | |
| 56 return EINVAL; | |
| 57 | |
| 58 struct timespec host_tp; | |
| 59 if (clock_gettime(host_clk_id, &host_tp)) | |
| 60 return errno; | |
| 61 | |
| 62 TimeSpecToNaClAbiTimeSpec(host_tp, tp); | |
| 63 return 0; | |
| 64 } | |
| 65 | |
| 66 } // namespace | |
| 67 | |
| 68 // Cast away the distinction between host types and NaCl ABI types. | |
| 69 const nacl_irt_clock kIrtClock = { | |
| 70 reinterpret_cast<int(*)(nacl_irt_clockid_t, struct timespec*)>( | |
| 71 IrtClockGetRes), | |
| 72 reinterpret_cast<int(*)(nacl_irt_clockid_t, struct timespec*)>( | |
| 73 IrtClockGetTime), | |
| 74 }; | |
| 75 | |
| 76 } // namespace nonsfi | |
| 77 } // namespace nacl | |
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