+++ /dev/null
-//
-// TraceFileAction.cpp
-// kdprof
-//
-// Created by James McIlree on 4/15/13.
-// Copyright (c) 2013 Apple. All rights reserved.
-//
-
-#include "global.h"
-
-#if 0
-template <typename SIZE>
-static void execute_arch_specific(Globals& globals, std::string path)
-{
- //
- // Trace file looks roughly like:
- //
- // RAW_header
- // threadmap[thread_count]
- // wasted-space-to-align-to-next-4096-byte-boundary
- // KDEvents[]
- //
-
- MappedFile trace_data(path.c_str());
- if (TraceDataHeader<SIZE>* header = reinterpret_cast<TraceDataHeader<SIZE>*>(trace_data.address())) {
-
- KDThreadMapEntry<SIZE>* threadmap = NULL;
- uint32_t threadmap_count = 0;
- KDCPUMapEntry* cpumap = NULL;
- uint32_t cpumap_count = 0;
- KDEvent<SIZE>* events = NULL;
-
- if (header->version() != RAW_VERSION1) {
- // If the header is not a RAW_VERSION1, we must assume it is a
- // RAW_VERSION0. The difficulty here is that RAW_VERSION0 consists
- // of 4 bytes, which are the thread_count. We can't do much
- // sanity checking. The first four bytes are already read into
- // the existing header, reuse them. We must also reset the file
- // offset.
-
- threadmap_count = header->version();
- threadmap = reinterpret_cast<KDThreadMapEntry<SIZE>*>(trace_data.address() + 4);
-
- // Event data starts immediately following the threadmap
- size_t offset = 4 + threadmap_count * sizeof(KDThreadMapEntry<SIZE>);
- events = reinterpret_cast<KDEvent<SIZE>*>(trace_data.address() + offset);
- } else {
- //
- // RAW_VERSION1
- //
- threadmap_count = header->thread_count();
- threadmap = reinterpret_cast<KDThreadMapEntry<SIZE>*>(trace_data.address() + sizeof(TraceDataHeader<SIZE>));
-
- size_t threadmap_size_in_bytes = threadmap_count * sizeof(KDThreadMapEntry<SIZE>);
- size_t offset_to_event_data = (sizeof(TraceDataHeader<SIZE>) + threadmap_size_in_bytes + 4095) & ~4095;
- size_t offset_to_cpumap_data = sizeof(TraceDataHeader<SIZE>) + threadmap_size_in_bytes;
- size_t cpumap_bytes = offset_to_event_data - offset_to_cpumap_data;
-
- //
- // In a RAW_VERSION1, there *may* be a cpumap.
- // If it exists, it will be between the header and the page aligned offset
- // that event data begins at.
- //
- if (cpumap_bytes > sizeof(kd_cpumap_header) + sizeof(kd_cpumap)) {
- kd_cpumap_header* cpumap_header = reinterpret_cast<kd_cpumap_header*>(trace_data.address() + offset_to_cpumap_data);
- if (cpumap_header->version_no == RAW_VERSION1) {
- cpumap = (KDCPUMapEntry*)&cpumap_header[1];
- cpumap_count = cpumap_header->cpu_count;
- }
- }
-
- // Event data starts at the next PAGE alignment boundary.
- //
- // Hmm, this could be pretty awful in iOS...
- //
- // Kernel page size is 4k. Userspace page size is 16kb in 64b.
- // Kernel writes the data. Unless the kernel call fails, then userspace writes the data. Blech.
- events = reinterpret_cast<KDEvent<SIZE>*>(trace_data.address() + offset_to_event_data);
- }
-
- uintptr_t event_count = (uintptr_t)trace_data.size() - (reinterpret_cast<uintptr_t>(events) - reinterpret_cast<uintptr_t>(trace_data.address()));
- if (event_count % sizeof(KDEvent<SIZE>) != 0) {
- // We're probably looking at the wrong k32/k64. Throw and try the other size.
- THROW("Bytes in file does not match an even multiple of Event struct");
- }
- event_count /= sizeof(KDEvent<SIZE>);
-
- std::vector<KDCPUMapEntry> default_cpumap;
-
- if (cpumap == NULL || cpumap_count == 0) {
- // No cpumap found, we need to fake one up using the default values.
- for (uint32_t i=0; i<globals.cpu_count(); ++i) {
- default_cpumap.emplace_back(i, 0, "AP-???");
- }
- uint32_t iop_limit = globals.cpu_count() + globals.iop_count();
- for (uint32_t i=globals.cpu_count(); i<iop_limit; ++i) {
- default_cpumap.emplace_back(i, KDBG_CPUMAP_IS_IOP, "IOP-???");
- }
-
- cpumap = default_cpumap.data();
- cpumap_count = (uint32_t)default_cpumap.size();
- }
-
- // IOP's have been producing .trace files with out of order events.
- // This is a hack fix to work around that. It costs a full copy of the data!
- MemoryBuffer<KDEvent<SIZE>> presorted_events;
- if (globals.should_presort_events() && event_count) {
- presorted_events.set_capacity(event_count);
- memcpy(presorted_events.data(), events, event_count * sizeof(KDEvent<SIZE>));
- events = presorted_events.data();
- std::sort(events, events + event_count, [](KDEvent<SIZE> const& p0, KDEvent<SIZE> const& p1) -> bool {
- return p0.timestamp() < p1.timestamp();
- });
- }
-
- Machine<SIZE> machine(cpumap, cpumap_count, threadmap, threadmap_count, events, event_count);
-
- if (!machine.lost_events()) {
- if (globals.should_zero_base_timestamps() && event_count) {
- globals.set_beginning_of_time(events[0].timestamp());
- } else {
- globals.set_beginning_of_time(AbsTime(0));
- }
-
- if (!globals.is_timebase_set()) {
- if (machine.is_ios()) {
- globals.set_timebase({ 125, 3 }, false);
- } else {
- globals.set_timebase({ 1, 1 }, false);
- }
- }
-
- if (globals.is_verbose()) {
- dprintf(globals.output_fd(), "\n%s\n", path.c_str());
- print_verbose_machine_info(globals, machine, threadmap_count, (default_cpumap.empty()) ? cpumap_count : 0);
- }
-
- if (globals.should_print_events()) {
- print_machine_events(globals, machine);
- }
-
- if (globals.should_print_summary()) {
- print_machine_summary(globals, machine);
- }
-
- if (globals.should_print_csv_summary()) {
- print_machine_csv_summary(globals, machine);
- }
-
- if (globals.should_print_process_start_stop_timestamps()) {
- print_process_start_stop_timestamps(globals, machine);
- }
- } else {
- log_msg(ASL_LEVEL_WARNING, "The trace data indicates that events were lost, the file cannot be processed\n");
- }
- } else {
- log_msg(ASL_LEVEL_ERR, "Unable to read from %s\n", path.c_str());
- exit(1);
- }
-}
-
-void TraceFileAction::execute(Globals& globals) {
- if (globals.is_kernel_size_set()) {
- try {
- if (globals.kernel_size() == KernelSize::k32)
- execute_arch_specific<Kernel32>(globals, _path);
- else
- execute_arch_specific<Kernel64>(globals, _path);
- } catch (Exception& e) {
- log_msg(ASL_LEVEL_ERR, "An exception was raised: %s", e.what());
- log_msg(ASL_LEVEL_ERR, "An explicit kernel size was set, you may want to try not forcing the size to a single value\n");
- log_msg(ASL_LEVEL_ERR, "You may also want to check the number of cpus and iops configured if the file is from a device and does not have a cpumap\n");
- }
- } else {
- // Try em both!
- try {
- execute_arch_specific<Kernel64>(globals, _path);
- } catch (Exception& e) {
- execute_arch_specific<Kernel32>(globals, _path);
- }
- }
-}
-
-#endif
-
-template <typename SIZE>
-static void execute_arch_specific(Globals& globals, TraceFile& file, std::string& path)
-{
- Machine<SIZE> machine(file);
-
- if (!machine.lost_events()) {
- if (globals.should_zero_base_timestamps() && machine.event_count()) {
- globals.set_beginning_of_time(machine.events()[0].timestamp());
- } else {
- globals.set_beginning_of_time(AbsTime(0));
- }
-
- if (!globals.is_timebase_set()) {
- if (machine.is_ios()) {
- globals.set_timebase({ 125, 3 }, false);
- } else {
- globals.set_timebase({ 1, 1 }, false);
- }
- }
-
- if (globals.is_verbose()) {
- dprintf(globals.output_fd(), "\n%s\n", path.c_str());
- print_verbose_machine_info(globals, machine, file.threadmap_count(), file.cpumap_count());
- }
-
- if (globals.should_print_events()) {
- print_machine_events(globals, machine);
- }
-
- if (globals.should_print_summary()) {
- print_machine_summary(globals, machine);
- }
-
- if (globals.should_print_csv_summary()) {
- print_machine_csv_summary(globals, machine);
- }
-
- if (globals.should_print_process_start_stop_timestamps()) {
- print_process_start_stop_timestamps(globals, machine);
- }
- } else {
- log_msg(ASL_LEVEL_WARNING, "The trace data indicates that events were lost, the file cannot be processed\n");
- }
-}
-
-void TraceFileAction::execute(Globals& globals) {
- TraceFile file(_path.c_str(), globals.should_presort_events(), globals.cpu_count(), globals.iop_count());
- if (globals.is_kernel_size_set()) {
- try {
- if (globals.kernel_size() == KernelSize::k32)
- execute_arch_specific<Kernel32>(globals, file, _path);
- else
- execute_arch_specific<Kernel64>(globals, file, _path);
- } catch (Exception& e) {
- log_msg(ASL_LEVEL_ERR, "An exception was raised: %s", e.what());
- log_msg(ASL_LEVEL_ERR, "An explicit kernel size was set, you may want to try not forcing the size to a single value\n");
- log_msg(ASL_LEVEL_ERR, "You may also want to check the number of cpus and iops configured if the file is from a device and does not have a cpumap\n");
- }
- } else {
- if (file.is_valid()) {
- if (file.is_64_bit()) {
- execute_arch_specific<Kernel64>(globals, file, _path);
- } else {
- execute_arch_specific<Kernel32>(globals, file, _path);
- }
- } else {
- if (file.mmap_failed()) {
- log_msg(ASL_LEVEL_ERR, "Unable to mmap %s, it may exceed this devices memory limits\n", _path.c_str());
- } else {
- log_msg(ASL_LEVEL_ERR, "%s does not appear to be a valid trace file\n", _path.c_str());
- }
- }
- }
-}
-
projects / apple / system_cmds.git / blobdiff