Index: tools/timer/SysTimer_mach.cpp |
diff --git a/tools/timer/SysTimer_mach.cpp b/tools/timer/SysTimer_mach.cpp |
new file mode 100644 |
index 0000000000000000000000000000000000000000..aca12dee5203afb2109aa47d6d7b8a23c183e129 |
--- /dev/null |
+++ b/tools/timer/SysTimer_mach.cpp |
@@ -0,0 +1,66 @@ |
+/* |
+ * Copyright 2011 Google Inc. |
+ * |
+ * Use of this source code is governed by a BSD-style license that can be |
+ * found in the LICENSE file. |
+ */ |
+#include "SysTimer_mach.h" |
+ |
+static time_value_t mac_cpu_time() { |
+ mach_port_t task = mach_task_self(); |
+ if (task == MACH_PORT_NULL) { |
+ time_value_t none = {0, 0}; |
+ return none; |
+ } |
+ |
+ task_thread_times_info thread_info_data; |
+ mach_msg_type_number_t thread_info_count = TASK_THREAD_TIMES_INFO_COUNT; |
+ if (KERN_SUCCESS != task_info(task, |
+ TASK_THREAD_TIMES_INFO, |
+ reinterpret_cast<task_info_t>(&thread_info_data), |
+ &thread_info_count)) { |
+ time_value_t none = {0, 0}; |
+ return none; |
+ } |
+ |
+ time_value_add(&thread_info_data.user_time, &thread_info_data.system_time) |
+ return thread_info_data.user_time; |
+} |
+ |
+static double interval_in_ms(time_value_t start_clock, time_value_t end_clock) { |
+ double duration_clock; |
+ if ((end_clock.microseconds - start_clock.microseconds) < 0) { |
+ duration_clock = (end_clock.seconds - start_clock.seconds-1) * 1000; |
+ duration_clock += (1000000 + end_clock.microseconds - start_clock.microseconds) / 1000.0; |
+ } else { |
+ duration_clock = (end_clock.seconds - start_clock.seconds) * 1000; |
+ duration_clock += (end_clock.microseconds - start_clock.microseconds) / 1000.0; |
+ } |
+ return duration_clock; |
+} |
+ |
+void SysTimer::startWall() { |
+ fStartWall = mach_absolute_time(); |
+} |
+ |
+void SysTimer::startCpu() { |
+ fStartCpu = mac_cpu_time(); |
+} |
+ |
+double SysTimer::endCpu() { |
+ time_value_t end_cpu = mac_cpu_time(); |
+ return interval_in_ms(fStartCpu, end_cpu); |
+} |
+ |
+double SysTimer::endWall() { |
+ uint64_t end_wall = mach_absolute_time(); |
+ |
+ uint64_t elapsed = end_wall - fStartWall; |
+ mach_timebase_info_data_t sTimebaseInfo; |
+ if (KERN_SUCCESS != mach_timebase_info(&sTimebaseInfo)) { |
+ return 0; |
+ } else { |
+ uint64_t elapsedNano = elapsed * sTimebaseInfo.numer / sTimebaseInfo.denom; |
+ return elapsedNano / 1000000.0; |
+ } |
+} |