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  2. Signal (IPC) - Wikipedia

    en.wikipedia.org/wiki/Signal_(IPC)

    A signal is an asynchronous notification sent to a process or to a specific thread within the same process to notify it of an event. Common uses of signals are to interrupt, suspend, terminate or kill a process. Signals originated in 1970s Bell Labs Unix and were later specified in the POSIX standard.

  3. Interrupt request - Wikipedia

    en.wikipedia.org/wiki/Interrupt_request

    IRQs 0 to 7 are managed by one Intel 8259 PIC, and IRQs 8 to 15 by a second Intel 8259 PIC. The first PIC, the master, is the only one that directly signals the CPU. The second PIC, the slave, instead signals to the master on its IRQ 2 line, and the master passes the signal on to the CPU.

  4. Interrupt - Wikipedia

    en.wikipedia.org/wiki/Interrupt

    A hardware interrupt is a condition related to the state of the hardware that may be signaled by an external hardware device, e.g., an interrupt request (IRQ) line on a PC, or detected by devices embedded in processor logic (e.g., the CPU timer in IBM System/370), to communicate that the device needs attention from the operating system (OS) [7] or, if there is no OS, from the bare metal ...

  5. USBKill - Wikipedia

    en.wikipedia.org/wiki/USBKill

    USBKill is anti-forensic software distributed via GitHub, written in Python for the BSD, Linux, and OS X operating systems. It is designed to serve as a kill switch if the computer on which it is installed should fall under the control of individuals or entities against the desires of the owner. [1]

  6. kill (command) - Wikipedia

    en.wikipedia.org/wiki/Kill_(command)

    The kill command is a wrapper around the kill() system call, which sends signals to processes or process groups on the system, referenced by their numeric process IDs (PIDs) or process group IDs (PGIDs). kill is always provided as a standalone utility as defined by the POSIX standard.

  7. Interrupt priority level - Wikipedia

    en.wikipedia.org/wiki/Interrupt_priority_level

    The interrupt priority level (IPL) is a part of the current system interrupt state, which indicates the interrupt requests that will currently be accepted. The IPL may be indicated in hardware by the registers in a programmable interrupt controller, or in software by a bitmask or integer value and source code of threads.

  8. Thread safety - Wikipedia

    en.wikipedia.org/wiki/Thread_safety

    Thread safe, MT-safe: Use a mutex for every single resource to guarantee the thread to be free of race conditions when those resources are accessed by multiple threads simultaneously. Thread safety guarantees usually also include design steps to prevent or limit the risk of different forms of deadlocks , as well as optimizations to maximize ...

  9. Keyboard interrupt - Wikipedia

    en.wikipedia.org/wiki/Keyboard_interrupt

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