system_utils_mac.cpp

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Author : Shahbaz Youssefi
Date : 2019-08-23 15:45:34
Hash : f0dd087e
Message : Move timer functionality from util/ to common/ The main timer functionality (get absolute time) is moved to common/ for use in ANGLE itself (in upcoming overlay change). util/Timer.h is no longer an abstract class and uses this functionality to implement the timer. Bug: angleproject:3757 Change-Id: I3fe418778d80d1089c9bfe43a9e8098e43236f18 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1769061 Reviewed-by: Cody Northrop <cnorthrop@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org> Reviewed-by: Tim Van Patten <timvp@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>

src/common/system_utils_mac.cpp

//
// Copyright 2015 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//

// system_utils_osx.cpp: Implementation of OS-specific functions for OSX

#include "system_utils.h"

#include <unistd.h>

#include <CoreServices/CoreServices.h>
#include <mach-o/dyld.h>
#include <mach/mach.h>
#include <mach/mach_time.h>
#include <cstdlib>
#include <vector>

#include <array>

namespace angle
{
std::string GetExecutablePath()
{
    std::string result;

    uint32_t size = 0;
    _NSGetExecutablePath(nullptr, &size);

    std::vector<char> buffer;
    buffer.resize(size + 1);

    _NSGetExecutablePath(buffer.data(), &size);
    buffer[size] = '\0';

    if (!strrchr(buffer.data(), '/'))
    {
        return "";
    }
    return buffer.data();
}

std::string GetExecutableDirectory()
{
    std::string executablePath = GetExecutablePath();
    size_t lastPathSepLoc      = executablePath.find_last_of("/");
    return (lastPathSepLoc != std::string::npos) ? executablePath.substr(0, lastPathSepLoc) : "";
}

const char *GetSharedLibraryExtension()
{
    return "dylib";
}

double GetCurrentTime()
{
    mach_timebase_info_data_t timebaseInfo;
    mach_timebase_info(&timebaseInfo);

    double secondCoeff = timebaseInfo.numer * 1e-9 / timebaseInfo.denom;
    return secondCoeff * mach_absolute_time();
}
}  // namespace angle

kc3-lang/angle/src/common/system_utils_mac.cpp

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kc3-lang/angle /src/common/system_utils_mac.cpp