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2014/10/15 ¤U¤È 10:11:14
iphone Programming Glossary: machWhat is mach_absolute_time based on on iPhone http://stackoverflow.com/questions/1450737/what-is-mach-absolute-time-based-on-on-iphone is mach_absolute_time based on on iPhone I use this code to keep track of last reboot float secondsSinceLastReboot return float.. based on on iPhone I use this code to keep track of last reboot float secondsSinceLastReboot return float mach_absolute_time float timebase.numer float timebase.denom 1000000000.0f I assumed mach_absolute_time was based on last device.. return float mach_absolute_time float timebase.numer float timebase.denom 1000000000.0f I assumed mach_absolute_time was based on last device boot time like it is on a mac. It doesn't seem to be based on that. I actually have..
Available memory for iPhone OS app http://stackoverflow.com/questions/2798638/available-memory-for-iphone-os-app memory management share improve this question This function will return the available memory in bytes #import mach mach.h #import mach mach_host.h natural_t freeMemory void mach_port_t host_port mach_host_self mach_msg_type_number_t host_size.. memory management share improve this question This function will return the available memory in bytes #import mach mach.h #import mach mach_host.h natural_t freeMemory void mach_port_t host_port mach_host_self mach_msg_type_number_t host_size.. share improve this question This function will return the available memory in bytes #import mach mach.h #import mach mach_host.h natural_t freeMemory void mach_port_t host_port mach_host_self mach_msg_type_number_t host_size sizeof vm_statistics_data_t..
High-resolution timer for iPhone? http://stackoverflow.com/questions/3540234/high-resolution-timer-for-iphone took f seconds myTimer elapsedTime iphone objective c timer high resolution share improve this question Look into mach_absolute_time in the mach mach_time.h header. Don't use NSDate. NSDate isn't even guaranteed to not go backwards occasionally.. iphone objective c timer high resolution share improve this question Look into mach_absolute_time in the mach mach_time.h header. Don't use NSDate. NSDate isn't even guaranteed to not go backwards occasionally when ntp does its thing... iphone objective c timer high resolution share improve this question Look into mach_absolute_time in the mach mach_time.h header. Don't use NSDate. NSDate isn't even guaranteed to not go backwards occasionally when ntp does its thing...
Is it legal to use the well-known free memory code in ipad/iphone app? [closed] http://stackoverflow.com/questions/3823266/is-it-legal-to-use-the-well-known-free-memory-code-in-ipad-iphone-app available memory of the device 2. force free memory. Can we use it in the app Will app store allow thanks #import mach mach.h #import mach mach_host.h static void print_free_memory mach_port_t host_port mach_msg_type_number_t host_size vm_size_t.. available memory of the device 2. force free memory. Can we use it in the app Will app store allow thanks #import mach mach.h #import mach mach_host.h static void print_free_memory mach_port_t host_port mach_msg_type_number_t host_size vm_size_t.. of the device 2. force free memory. Can we use it in the app Will app store allow thanks #import mach mach.h #import mach mach_host.h static void print_free_memory mach_port_t host_port mach_msg_type_number_t host_size vm_size_t pagesize host_port..
Monitor memory usage in an iphone app? http://stackoverflow.com/questions/4579642/monitor-memory-usage-in-an-iphone-app important you know how much memory is free rather than how much your app is using. Here's some code to do that #import mach mach.h #import mach mach_host.h natural_t get_free_memory mach_port_t host_port mach_msg_type_number_t host_size vm_size_t.. you know how much memory is free rather than how much your app is using. Here's some code to do that #import mach mach.h #import mach mach_host.h natural_t get_free_memory mach_port_t host_port mach_msg_type_number_t host_size vm_size_t pagesize.. much memory is free rather than how much your app is using. Here's some code to do that #import mach mach.h #import mach mach_host.h natural_t get_free_memory mach_port_t host_port mach_msg_type_number_t host_size vm_size_t pagesize host_port..
How to Programmatically Tell How Much Memory an iOS App is Using? [duplicate] http://stackoverflow.com/questions/5046711/how-to-programmatically-tell-how-much-memory-an-ios-app-is-using how this can be done iphone ipad ios memory memory management share improve this question How about this #include mach mach.h freeMemory #include mach mach_host.h freeMemory struct task_basic_info info if dump_memory_usage info log size_t.. can be done iphone ipad ios memory memory management share improve this question How about this #include mach mach.h freeMemory #include mach mach_host.h freeMemory struct task_basic_info info if dump_memory_usage info log size_t info.resident_size.. ios memory memory management share improve this question How about this #include mach mach.h freeMemory #include mach mach_host.h freeMemory struct task_basic_info info if dump_memory_usage info log size_t info.resident_size log size_t..
How to determine binary image architecture at runtime? http://stackoverflow.com/questions/5567215/how-to-determine-binary-image-architecture-at-runtime running iphone ios cpu architecture armv7 armv6 share improve this question Alright time for the long answer. The mach headers of the dyld images in the application contain the information you are looking for. I have added an example that.. and nothing else so I would not recommend pasting it directly into production code. What it does it get all of the mach headers for all of the currently loaded dyld images and prints an output very similar to the Binary Images section of the.. image because I did not bother looking up how to find that. Main.m #import UIKit UIKit.h #include string.h #import mach o loader.h #import mach o dyld.h #import mach o arch.h void printImage const struct mach_header header uint8_t header_ptr..
CoreAudio AudioTimeStamp.mHostTime clock frequency? http://stackoverflow.com/questions/675626/coreaudio-audiotimestamp-mhosttime-clock-frequency the simulator and my device iphone objective c audio share improve this question There exists the following file mach mach_time.h In this file you'll find a function named mach_absolute_time . mach_absolute_time returns an uint64 number that.. simulator and my device iphone objective c audio share improve this question There exists the following file mach mach_time.h In this file you'll find a function named mach_absolute_time . mach_absolute_time returns an uint64 number that has.. improve this question There exists the following file mach mach_time.h In this file you'll find a function named mach_absolute_time . mach_absolute_time returns an uint64 number that has no defined meaning. Imagine those are ticks but nowhere..
iPhone app uses 150 MB memory and still no low memory warning! http://stackoverflow.com/questions/6787528/iphone-app-uses-150-mb-memory-and-still-no-low-memory-warning following code to check the OS version of how much memory you app uses void report_memory struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr task_info mach_task_self TASK_BASIC_INFO task_info_t info size.. void report_memory struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr task_info mach_task_self TASK_BASIC_INFO task_info_t info size if kerr KERN_SUCCESS NSLog @ Memory in use in bytes u info.resident_size.. size if kerr KERN_SUCCESS NSLog @ Memory in use in bytes u info.resident_size else NSLog @ Error with task_info s mach_error_string kerr You will need to #import mach mach.h This will tell you how much memory the operating system has granted..
http://stackoverflow.com/questions/681042/symbolicatecrash Touch.crash myapp.app.dSYM test.txt It matches up all of the framework calls but none of my code. How can I make it mach up my code . Give me some ideas please iphone share improve this question As Craig Hockenberry points out the dSYM..
Need an API that detects when an iPhone is plugged in http://stackoverflow.com/questions/7301680/need-an-api-that-detects-when-an-iphone-is-plugged-in #include stdio.h #import Foundation Foundation.h #import IOKit usb IOUSBLib.h #import IOKit IOCFPlugIn.h #import mach mach_port.h int main int argc const char argv get the port through which to talk to the kernel mach_port_t masterDevicePort.. #include stdio.h #import Foundation Foundation.h #import IOKit usb IOUSBLib.h #import IOKit IOCFPlugIn.h #import mach mach_port.h int main int argc const char argv get the port through which to talk to the kernel mach_port_t masterDevicePort IOMasterPort.. #import mach mach_port.h int main int argc const char argv get the port through which to talk to the kernel mach_port_t masterDevicePort IOMasterPort MACH_PORT_NULL masterDevicePort create a dictionary that describes a search for services..
Programmatically retrieve memory usage on iPhone http://stackoverflow.com/questions/787160/programmatically-retrieve-memory-usage-on-iphone the various profiling tools as well as they are designed to give you a much better picture of usage over all. #import mach mach.h ... void report_memory void struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr.. various profiling tools as well as they are designed to give you a much better picture of usage over all. #import mach mach.h ... void report_memory void struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr task_info.. a much better picture of usage over all. #import mach mach.h ... void report_memory void struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr task_info mach_task_self TASK_BASIC_INFO task_info_t info size..
http://stackoverflow.com/questions/7989864/watching-memory-usage-in-ios and so I put it in there. I suggest using #ifdef around these so this code is only included in Debug builds. #import mach mach.h vm_size_t usedMemory void struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr.. so I put it in there. I suggest using #ifdef around these so this code is only included in Debug builds. #import mach mach.h vm_size_t usedMemory void struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr task_info.. this code is only included in Debug builds. #import mach mach.h vm_size_t usedMemory void struct task_basic_info info mach_msg_type_number_t size sizeof info kern_return_t kerr task_info mach_task_self TASK_BASIC_INFO task_info_t info size return..
iOS - Get CPU usage from application http://stackoverflow.com/questions/8223348/ios-get-cpu-usage-from-application question Update . This code is working for me Update 2 . The thread_list was leaking so added vm_deallocate #import mach mach.h float cpu_usage kern_return_t kr task_info_data_t tinfo mach_msg_type_number_t task_info_count task_info_count TASK_INFO_MAX.. Update . This code is working for me Update 2 . The thread_list was leaking so added vm_deallocate #import mach mach.h float cpu_usage kern_return_t kr task_info_data_t tinfo mach_msg_type_number_t task_info_count task_info_count TASK_INFO_MAX.. was leaking so added vm_deallocate #import mach mach.h float cpu_usage kern_return_t kr task_info_data_t tinfo mach_msg_type_number_t task_info_count task_info_count TASK_INFO_MAX kr task_info mach_task_self TASK_BASIC_INFO task_info_t..
Simulating System Wide Touch Events on iOS http://stackoverflow.com/questions/9221086/simulating-system-wide-touch-events-on-ios What you need to do is first create the events you want and then send them to SpringBoard over the purple port eg. mach port. To make them system wide you must forward them to each application over the port. That means you need to actually..
How to find available memory in iPhone programmatically? http://stackoverflow.com/questions/1020327/how-to-find-available-memory-in-iphone-programmatically in iPhone from Objective C iphone objective c memory management share improve this question You can use the Mach call host_info host flavor host_info host_info_count . If you call it with flavor HOST_BASIC_INFO the buffer host_info points..
How do I determine the target architecture of static library (.a) on Mac OS X? http://stackoverflow.com/questions/1085137/how-do-i-determine-the-target-architecture-of-static-library-a-on-mac-os-x will probably tell you. otool certainly should be able to. But I'd try file first e.g. logan Users logan file d2 d2 Mach O executable ppc Example with archive logan Users logan file usr lib libMallocDebug.a usr lib libMallocDebug.a Mach O universal.. d2 Mach O executable ppc Example with archive logan Users logan file usr lib libMallocDebug.a usr lib libMallocDebug.a Mach O universal binary with 2 architectures usr lib libMallocDebug.a for architecture i386 current ar archive random library..
http://stackoverflow.com/questions/11773974/xcode-duplicate-symbol-error duplicate symbol error I am getting Apple Mach O Linker Id Error ld duplicate symbol _matrixIdentity in BlahBlah Corridor.o and Blahblah Drawable.o for architecture i386..
Apple Mach-O Linker Error When Building App http://stackoverflow.com/questions/19350085/apple-mach-o-linker-error-when-building-app Mach O Linker Error When Building App duplicate symbol _y in Users archanamehta Library Developer Xcode DerivedData GuideforCODGhosts..
How to determine at run-time if app is for development, app store or ad hoc distribution? http://stackoverflow.com/questions/3426467/how-to-determine-at-run-time-if-app-is-for-development-app-store-or-ad-hoc-dist in the executable otool l lists it as LC_CODE_SIGNATURE . Parsing this is even more tedious you need to parse the Mach O header and load commands and for universal binaries which are now the default you'll need to check the currently loaded..
http://stackoverflow.com/questions/4917752/how-to-get-rid-of-the-warning-file-was-built-for-unsupported-file-format-when to my libraries ls libMyLibrary Device.a libMyLibrary Simulator.a file libMyLibrary Device.a libMyLibrary Device.a Mach O universal binary with 2 architectures libMyLibrary Device.a for architecture armv6 current ar archive random library libMyLibrary.. for architecture armv7 current ar archive random library file libMyLibrary Simulator.a libMyLibrary Simulator.a Mach O universal binary with 1 architecture libMyLibrary Simulator.a for architecture i386 current ar archive random library.. Simulator.a ls libMyLibrary Device.a libMyLibrary Simulator.a libMyLibrary.a file libMyLibrary.a libMyLibrary.a Mach O universal binary with 3 architectures libMyLibrary.a for architecture armv6 current ar archive random library libMyLibrary.a..
Apple Mach-O Linker Error when compiling for device http://stackoverflow.com/questions/5329001/apple-mach-o-linker-error-when-compiling-for-device Mach O Linker Error when compiling for device I've just upgraded to xcode 4.0 and I can no longer deploy to iPhone I get a Apple.. Error when compiling for device I've just upgraded to xcode 4.0 and I can no longer deploy to iPhone I get a Apple Mach O Linker Error it still works for the simulator though. Ld Users yveswheeler Library Developer Xcode DerivedData iParcel..
Performance counters on the iPhone http://stackoverflow.com/questions/634144/performance-counters-on-the-iphone
How do I accurately time how long it takes to call a function on the iPhone? http://stackoverflow.com/questions/646815/how-do-i-accurately-time-how-long-it-takes-to-call-a-function-on-the-iphone
Error:Apple Mach-O Linker (Id) Warning http://stackoverflow.com/questions/7752127/errorapple-mach-o-linker-id-warning Apple Mach O Linker Id Warning In my app I have been working to import and export the database. I have imported some files which is..
iOS - Get CPU usage from application http://stackoverflow.com/questions/8223348/ios-get-cpu-usage-from-application thinfo mach_msg_type_number_t thread_info_count thread_basic_info_t basic_info_th uint32_t stat_thread 0 Mach threads basic_info task_basic_info_t tinfo get threads in the task kr task_threads mach_task_self thread_list thread_count..
http://stackoverflow.com/questions/8421338/iphone-arc-facebook-sdk SDK because my app uses ARC. I try to remove the Facebook files from the compiler to avoid this but I get an Apple Mach O error when I remove the Facebook.m file. If I put that back in the compile sources I get the ARC errors. Anyone run into..
“Apple Mach-O linker command failed with exit code 1” http://stackoverflow.com/questions/9809477/apple-mach-o-linker-command-failed-with-exit-code-1 Apple Mach O linker command failed with exit code 1&rdquo I am trying to implement the SVProgressHUD activity indicator. I copied..
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