Instead, only the application that has become frozen is affected without locking up other applications. Force quitting applications in Mac OS X, therefore, cannot destabilize the entire system. Mac OS X is a fully pre-emptive multitasking operating system. With Mac OS X 10.4 Tiger, the user is able to reopen the crash application or send a crash report. In Mac OS X, an application which has been forced to quit does not impact the rest of the system.Īs of Mac OS X 10.3 Panther, the user can send a crash report to Apple after an application quits unexpectedly. In 32-bit clean or classic PowerPC-based systems, the recommended memory location was modified:Īs of Mac OS 8, once an application has been forced to quit, a dialog box will warn the user that the system may be unstable, and advises to save documents and restart the computer. In early systems with 24-bit addressing, the following can be typed into the debugger: However, it is possible to invoke a debugger through command-power (or a programmer's key) to enter commands to force quit the crashed foreground application that caused the error condition. This technique is also used to escape malware pages without any harm.īecause classic Mac OS is based on cooperative multitasking instead of pre-emptive multitasking, it was common for a system error in one application to freeze the entire system, forcing the user to restart the computer. This would not allow unsaved changes to be kept such changes are only stored in memory, to be gone once the application is force quit. As a result, in order to force the program to quit, the user is left with the sole option to force the application to quit. When an application is frozen or stops behaving normally, the user may not be able to quit the application normally. The user can then choose to save or not to save the changes, and a large majority of programs also offer an option to cancel the quitting process. When an application program quits normally, the user is prompted to save any documents that have newly inputted or modified changes which have not yet been saved. In macOS and Mac OS X, the keystroke to force quit any application program (including, to an extent, the Macintosh Finder) is command-option-escape.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |