139 lines
4.0 KiB
Plaintext
139 lines
4.0 KiB
Plaintext
/*
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* MVKOSExtensions.mm
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*
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* Copyright (c) 2015-2023 The Brenwill Workshop Ltd. (http://www.brenwill.com)
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "MVKOSExtensions.h"
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#include "MVKCommonEnvironment.h"
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#include <mach/mach_host.h>
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#include <mach/mach_time.h>
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#include <mach/task.h>
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#include <os/proc.h>
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#import <Foundation/Foundation.h>
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using namespace std;
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MVKOSVersion mvkOSVersion() {
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static MVKOSVersion _mvkOSVersion = 0;
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if ( !_mvkOSVersion ) {
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NSOperatingSystemVersion osVer = [[NSProcessInfo processInfo] operatingSystemVersion];
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_mvkOSVersion = mvkMakeOSVersion((uint32_t)osVer.majorVersion, (uint32_t)osVer.minorVersion, (uint32_t)osVer.patchVersion);
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}
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return _mvkOSVersion;
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}
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static uint64_t _mvkTimestampBase;
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static double _mvkTimestampPeriod;
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uint64_t mvkGetTimestamp() { return mach_absolute_time() - _mvkTimestampBase; }
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double mvkGetTimestampPeriod() { return _mvkTimestampPeriod; }
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double mvkGetElapsedMilliseconds(uint64_t startTimestamp, uint64_t endTimestamp) {
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if (endTimestamp == 0) { endTimestamp = mvkGetTimestamp(); }
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return (double)(endTimestamp - startTimestamp) * _mvkTimestampPeriod / 1e6;
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}
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// Initialize timestamping capabilities on app startup.
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//Called automatically when the framework is loaded and initialized.
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static bool _mvkTimestampsInitialized = false;
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__attribute__((constructor)) static void MVKInitTimestamps() {
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if (_mvkTimestampsInitialized ) { return; }
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_mvkTimestampsInitialized = true;
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_mvkTimestampBase = mach_absolute_time();
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mach_timebase_info_data_t timebase;
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mach_timebase_info(&timebase);
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_mvkTimestampPeriod = (double)timebase.numer / (double)timebase.denom;
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}
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void mvkDispatchToMainAndWait(dispatch_block_t block) {
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if (NSThread.isMainThread) {
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block();
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} else {
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dispatch_sync(dispatch_get_main_queue(), block);
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}
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}
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#pragma mark -
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#pragma mark Process environment
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string mvkGetEnvVar(string varName, bool* pWasFound) {
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@autoreleasepool {
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NSDictionary* nsEnv = [[NSProcessInfo processInfo] environment];
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NSString* envStr = nsEnv[@(varName.c_str())];
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if (pWasFound) { *pWasFound = envStr != nil; }
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return envStr ? envStr.UTF8String : "";
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}
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}
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int64_t mvkGetEnvVarInt64(string varName, bool* pWasFound) {
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return strtoll(mvkGetEnvVar(varName, pWasFound).c_str(), NULL, 0);
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}
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bool mvkGetEnvVarBool(std::string varName, bool* pWasFound) {
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return mvkGetEnvVarInt64(varName, pWasFound) != 0;
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}
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#pragma mark -
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#pragma mark System memory
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uint64_t mvkGetSystemMemorySize() {
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#if MVK_MACOS_OR_IOS
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mach_msg_type_number_t host_size = HOST_BASIC_INFO_COUNT;
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host_basic_info_data_t info;
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if (host_info(mach_host_self(), HOST_BASIC_INFO, (host_info_t)&info, &host_size) == KERN_SUCCESS) {
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return info.max_mem;
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}
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return 0;
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#endif
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#if MVK_TVOS
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return 0;
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#endif
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}
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uint64_t mvkGetAvailableMemorySize() {
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#if MVK_IOS_OR_TVOS
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if (mvkOSVersionIsAtLeast(13.0)) { return os_proc_available_memory(); }
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#endif
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mach_port_t host_port;
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mach_msg_type_number_t host_size;
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vm_size_t pagesize;
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host_port = mach_host_self();
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host_size = HOST_VM_INFO_COUNT;
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host_page_size(host_port, &pagesize);
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vm_statistics_data_t vm_stat;
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if (host_statistics(host_port, HOST_VM_INFO, (host_info_t)&vm_stat, &host_size) == KERN_SUCCESS ) {
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return vm_stat.free_count * pagesize;
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}
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return 0;
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}
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uint64_t mvkGetUsedMemorySize() {
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task_vm_info_data_t task_vm_info;
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mach_msg_type_number_t task_size = TASK_VM_INFO_COUNT;
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if (task_info(mach_task_self(), TASK_VM_INFO, (task_info_t)&task_vm_info, &task_size) == KERN_SUCCESS) {
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return task_vm_info.phys_footprint;
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}
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return 0;
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}
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