b9c1b51e45
*** to conform to clang-format’s LLVM style. This kind of mass change has
*** two obvious implications:
Firstly, merging this particular commit into a downstream fork may be a huge
effort. Alternatively, it may be worth merging all changes up to this commit,
performing the same reformatting operation locally, and then discarding the
merge for this particular commit. The commands used to accomplish this
reformatting were as follows (with current working directory as the root of
the repository):
find . \( -iname "*.c" -or -iname "*.cpp" -or -iname "*.h" -or -iname "*.mm" \) -exec clang-format -i {} +
find . -iname "*.py" -exec autopep8 --in-place --aggressive --aggressive {} + ;
The version of clang-format used was 3.9.0, and autopep8 was 1.2.4.
Secondly, “blame” style tools will generally point to this commit instead of
a meaningful prior commit. There are alternatives available that will attempt
to look through this change and find the appropriate prior commit. YMMV.
llvm-svn: 280751
134 lines
4.4 KiB
C++
134 lines
4.4 KiB
C++
//===-- MemoryGauge.cpp -----------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "MemoryGauge.h"
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#include "lldb/lldb-forward.h"
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#include <assert.h>
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#include <cmath>
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#include <mach/mach.h>
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#include <mach/mach_traps.h>
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#include <mach/task.h>
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using namespace lldb_perf;
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MemoryStats::MemoryStats(mach_vm_size_t virtual_size,
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mach_vm_size_t resident_size,
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mach_vm_size_t max_resident_size)
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: m_virtual_size(virtual_size), m_resident_size(resident_size),
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m_max_resident_size(max_resident_size) {}
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MemoryStats::MemoryStats(const MemoryStats &rhs)
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: m_virtual_size(rhs.m_virtual_size), m_resident_size(rhs.m_resident_size),
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m_max_resident_size(rhs.m_max_resident_size) {}
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MemoryStats &MemoryStats::operator=(const MemoryStats &rhs) {
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if (this != &rhs) {
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m_virtual_size = rhs.m_virtual_size;
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m_resident_size = rhs.m_resident_size;
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m_max_resident_size = rhs.m_max_resident_size;
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}
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return *this;
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}
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MemoryStats &MemoryStats::operator+=(const MemoryStats &rhs) {
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m_virtual_size += rhs.m_virtual_size;
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m_resident_size += rhs.m_resident_size;
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m_max_resident_size += rhs.m_max_resident_size;
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return *this;
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}
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MemoryStats MemoryStats::operator-(const MemoryStats &rhs) {
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return MemoryStats(m_virtual_size - rhs.m_virtual_size,
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m_resident_size - rhs.m_resident_size,
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m_max_resident_size - rhs.m_max_resident_size);
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}
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MemoryStats MemoryStats::operator+(const MemoryStats &rhs) {
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return MemoryStats(m_virtual_size + rhs.m_virtual_size,
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m_resident_size + rhs.m_resident_size,
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m_max_resident_size + rhs.m_max_resident_size);
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}
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MemoryStats MemoryStats::operator/(size_t n) {
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MemoryStats result(*this);
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result.m_virtual_size /= n;
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result.m_resident_size /= n;
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result.m_max_resident_size /= n;
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return result;
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}
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MemoryStats MemoryStats::operator*(const MemoryStats &rhs) {
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return MemoryStats(m_virtual_size * rhs.m_virtual_size,
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m_resident_size * rhs.m_resident_size,
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m_max_resident_size * rhs.m_max_resident_size);
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}
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Results::ResultSP MemoryStats::GetResult(const char *name,
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const char *description) const {
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std::unique_ptr<Results::Dictionary> dict_ap(
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new Results::Dictionary(name, NULL));
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dict_ap->AddUnsigned("resident", NULL, GetResidentSize());
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dict_ap->AddUnsigned("max_resident", NULL, GetMaxResidentSize());
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return Results::ResultSP(dict_ap.release());
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}
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MemoryGauge::ValueType MemoryGauge::Now() {
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task_t task = mach_task_self();
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mach_task_basic_info_data_t taskBasicInfo;
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mach_msg_type_number_t count = MACH_TASK_BASIC_INFO_COUNT;
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auto task_info_ret = task_info(task, MACH_TASK_BASIC_INFO,
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(task_info_t)&taskBasicInfo, &count);
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if (task_info_ret == KERN_SUCCESS) {
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return MemoryStats(taskBasicInfo.virtual_size, taskBasicInfo.resident_size,
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taskBasicInfo.resident_size_max);
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}
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return 0;
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}
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MemoryGauge::MemoryGauge()
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: m_state(MemoryGauge::State::eNeverUsed), m_start(), m_delta() {}
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void MemoryGauge::Start() {
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m_state = MemoryGauge::State::eCounting;
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m_start = Now();
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}
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MemoryGauge::ValueType MemoryGauge::Stop() {
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m_stop = Now();
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assert(m_state == MemoryGauge::State::eCounting &&
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"cannot stop a non-started gauge");
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m_state = MemoryGauge::State::eStopped;
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m_delta = m_stop - m_start;
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return m_delta;
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}
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MemoryGauge::ValueType MemoryGauge::GetDeltaValue() const {
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assert(m_state == MemoryGauge::State::eStopped &&
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"gauge must be used before you can evaluate it");
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return m_delta;
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}
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template <>
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Results::ResultSP lldb_perf::GetResult(const char *description,
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MemoryStats value) {
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return value.GetResult(NULL, description);
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}
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MemoryStats sqrt(const MemoryStats &arg) {
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long double virt_size = arg.GetVirtualSize();
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long double resident_size = arg.GetResidentSize();
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long double max_resident_size = arg.GetMaxResidentSize();
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virt_size = sqrtl(virt_size);
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resident_size = sqrtl(resident_size);
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max_resident_size = sqrtl(max_resident_size);
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return MemoryStats(virt_size, resident_size, max_resident_size);
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}
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