projects / apple / system_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| bd6521f0 A |
1 | // |
| 2 | // MachineGlobals.cpp | |
| 3 | // msa | |
| 4 | // | |
| 5 | // Created by James McIlree on 4/17/13. | |
| 6 | // Copyright (c) 2014 Apple. All rights reserved. | |
| 7 | // | |
| 8 | ||
| 9 | #include "global.h" | |
| 10 | ||
| 11 | Globals::Globals() : | |
| 12 | _cpu_count(0), | |
| 13 | _iop_count(0), | |
| 14 | _kernel_size(Kernel::is_64_bit() ? KernelSize::k64 : KernelSize::k32), | |
| 15 | _live_update_interval("100ms"), | |
| 16 | _is_cpu_count_set(false), | |
| 17 | _is_iop_count_set(false), | |
| 18 | _is_kernel_size_set(false), | |
| 19 | _is_timebase_set(false), | |
| 20 | _beginning_of_time(0), | |
| 21 | _should_print_mach_absolute_timestamps(false), | |
| 22 | _should_print_event_index(false), | |
| 23 | _is_verbose(false), | |
| 24 | _should_presort_events(false), | |
| 25 | _should_zero_base_timestamps(true), | |
| 26 | _should_trace_voucher_contents(true), | |
| 27 | _lifecycle_filter(kLifecycleFilter::User), | |
| 28 | _mach_msg_filter(kMachMsgFilter::Voucher) | |
| 29 | { | |
| 30 | // Default to the current machine's values | |
| 31 | mach_timebase_info(&_timebase_info); | |
| 32 | ||
| 33 | for (auto& entry : KDBG::cpumap()) { | |
| 34 | if (entry.is_iop()) | |
| 35 | _iop_count++; | |
| 36 | else | |
| 37 | _cpu_count++; | |
| 38 | } | |
| 39 | ||
| 40 | // If we are unable to get a cpumap, | |
| 41 | // fallback on the current # of cpus | |
| 42 | if (_cpu_count == 0) { | |
| 43 | _cpu_count = Kernel::active_cpu_count(); | |
| 44 | _iop_count = 0; | |
| 45 | } | |
| 46 | ||
| 47 | // This is only used as is for live tracing or capturing a trace, | |
| 48 | // so we want to use the current # of cpus. | |
| 49 | _trace_buffer_size = 250000 * _cpu_count; | |
| 50 | } | |
| 51 | ||
| 52 | static AbsTime parse_time(const char* arg, mach_timebase_info_data_t timebase_info) { | |
| 53 | ||
| 54 | char* units; | |
| 55 | uint64_t value = strtoull(arg, &units, 0); | |
| 56 | ||
| 57 | // Unspecified units are treated as seconds | |
| 58 | if (*units == 0 || strcmp(units, "s") == 0) { | |
| 59 | return NanoTime(value * NANOSECONDS_PER_SECOND).abs_time(timebase_info); | |
| 60 | } | |
| 61 | ||
| 62 | if (strcmp(units, "ms") == 0) | |
| 63 | return NanoTime(value * NANOSECONDS_PER_MILLISECOND).abs_time(timebase_info); | |
| 64 | ||
| 65 | if (strcmp(units, "us") == 0) | |
| 66 | return NanoTime(value * NANOSECONDS_PER_MICROSECOND).abs_time(timebase_info); | |
| 67 | ||
| 68 | if (strcmp(units, "ns") == 0) | |
| 69 | return NanoTime(value).abs_time(timebase_info); | |
| 70 | ||
| 71 | if (strcmp(units, "mabs") == 0) { | |
| 72 | return AbsTime(value); | |
| 73 | } | |
| 74 | ||
| 75 | usage("Unable to parse units on time value"); | |
| 76 | } | |
| 77 | ||
| 78 | AbsTime Globals::live_update_interval() const { | |
| 79 | return parse_time(_live_update_interval.c_str(), _timebase_info); | |
| 80 | } |