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Stored procedure. A stored procedure (also termed prc, proc, storp, sproc, StoPro, StoredProc, StoreProc, sp, or SP) is a subroutine available to applications that access a relational database management system (RDBMS). Such procedures are stored in the database data dictionary . Uses for stored procedures include data-validation (integrated ...
Context switch. In computing, a context switch is the process of storing the state of a process or thread, so that it can be restored and resume execution at a later point, and then restoring a different, previously saved, state. [1] This allows multiple processes to share a single central processing unit (CPU), and is an essential feature of a ...
A stack buffer overflow can be caused deliberately as part of an attack known as stack smashing. If the affected program is running with special privileges, or accepts data from untrusted network hosts (e.g. a webserver) then the bug is a potential security vulnerability. If the stack buffer is filled with data supplied from an untrusted user ...
In a language with free pointers or non-checked array writes (such as in C), the mixing of control flow data which affects the execution of code (the return addresses or the saved frame pointers) and simple program data (parameters or return values) in a call stack is a security risk, and is possibly exploitable through stack buffer overflows ...
Calling conventions describe the interface of called code: The order in which atomic (scalar) parameters, or individual parts of a complex parameter, are allocated. How parameters are passed (pushed on the stack, placed in registers, or a mix of both) Which registers the called function must preserve for the caller (also known as: callee-saved ...
Calling convention. In computer science, a calling convention is an implementation -level (low-level) scheme for how subroutines or functions receive parameters from their caller and how they return a result. [1] When some code calls a function, design choices have been taken for where and how parameters are passed to that function, and where ...
A return retrieves the saved contents of the PC and places it back in the PC, resuming sequential execution with the instruction following the subroutine call. Hardware implementation [ edit ] In a simple central processing unit (CPU), the PC is a digital counter (which is the origin of the term "program counter") that may be one of several ...
Application checkpointing. Checkpointing is a technique that provides fault tolerance for computing systems. It basically consists of saving a snapshot of the application 's state, so that applications can restart from that point in case of failure. This is particularly important for long running applications that are executed in failure-prone ...