supervisor mode वाक्य
उदाहरण वाक्य
मोबाइल
- Attempts to access other addresses trigger an interrupt which cause the CPU to re-enter supervisor mode, placing the kernel generally resorts to terminating the offending program, and reports the error.
- A protected mode timer is set by the kernel which triggers a return to supervisor mode after the specified time has elapsed . ( See above sections on Interrupts and Dual Mode Operation .)
- Whenever supervisor mode is needed, either by the kernel or user programs, the library functions " Supervisor ( ) " or " SuperState ( ) " are used.
- Attempts to alter these resources generally causes a switch to supervisor mode, where the operating system can deal with the illegal operation the program was attempting ( for example, by killing the program ).
- The ND-100 line was machine-instruction compatible with the Nord-10 line, except for some " extended instructions ", all in supervisor mode, mostly used by the operating system.
- The supervisor mode is used by the operating system's kernel for low level tasks that need unrestricted access to hardware, such as controlling how memory is written and erased, and communication with devices like graphics cards.
- The " same " printf usually isn't available in kernel code ( or other supervisor mode code, like device drivers ) because they don't run in an application context ( with a controlling terminal and a process id and so forth ).
- On newer processors, it disables supervisor mode execution prevention ( a processor capability that is used to prevent low privilege code like applications from running instructions with higher level privileges ) and then re-enables supervisor mode execution prevention when the application is done running kernel-level code.
- On newer processors, it disables supervisor mode execution prevention ( a processor capability that is used to prevent low privilege code like applications from running instructions with higher level privileges ) and then re-enables supervisor mode execution prevention when the application is done running kernel-level code.
- For instance it assumes the modernity of an architecture based on hierarchical privilege levels ( as Supervisor mode ), while academic research on computer architecture replaced this outdated technology many years ago ( see for instance the bibliography of capability-based security ), showing that it provides both poor BMF81 00 : 31, 26 August 2006 ( UTC)
- This technique is called supervisor mode; compared to more crude approaches ( such as storing the TCB in ROM, or equivalently, using the Harvard architecture ), it has the advantage of allowing the security-critical software to be upgraded in the field, although allowing secure upgrades of the trusted computing base poses bootstrap problems of its own.
- A PTE may also include information about whether the page has been written to ( the " dirty bit " ), when it was last used ( the " accessed bit, " for a least recently used ( LRU ) page replacement algorithm ), what kind of processes ( user mode or supervisor mode ) may read and write it, and whether it should be cached.
- Windows NT 3.1 featured a core kernel providing a system API, running in supervisor mode ( ring 0 in x86; referred to in Windows NT as " kernel mode " on all platforms ), and a set of user-space environments with their own APIs which included the new Win32 environment, an OS / 2 1.3 text-mode environment and a POSIX environment.
- In the C community, undefined behavior may be humorously referred to as " "'nasal demons "'", after a CPU might leave the behavior of some forms of an instruction undefined, but if the CPU supports memory protection then the specification will probably include a blanket rule stating that no user-accessible instruction may cause a hole in the operating system's security; so an actual CPU would be permitted to corrupt user registers in response to such an instruction, but would not be allowed to, for example, switch into supervisor mode.
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