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In computing, a stack trace (also called stack backtrace [1] or stack traceback [2]) is a report of the active stack frames at a certain point in time during the execution of a program. When a program is run, memory is often dynamically allocated in two places: the stack and the heap. Memory is continuously allocated on a stack but not on a ...
A trace tree is a data structure that is used in the runtime compilation of programming code. Trace trees are used in tracing just-in-time compilation where tracing is used during code execution to look for hot spots before compilation. When those hot spots are entered again the compiled code is run instead.
Since the trace is recorded by following one concrete execution path of the loop, later executions of that trace can diverge from that path. To identify the places where that can happen, special guard instructions are inserted into the trace. One example for such a place are if statements.
Sun Microsystems designed DTrace to give operational insights that allow users to tune and troubleshoot applications and the OS itself. Testers write tracing programs (also referred to as scripts) using the D programming language (not to be confused with other programming languages named "D").
Depending on the architecture and operating system, the running program can not only handle the event but may extract some information about its state like getting a stack trace, processor register values, the line of the source code when it was triggered, memory address that was invalidly accessed [8] and whether the action was a read or a ...
The debugging interface of Eclipse with a program suspended at a breakpoint. Panels with stack trace (upper left) and watched variables (upper right) can be seen.. In software development, a breakpoint is an intentional stopping or pausing place in a program, put in place for debugging purposes.
Call graphs can be dynamic or static. [4] A dynamic call graph is a record of an execution of the program, for example as output by a profiler. Thus, a dynamic call graph can be exact, but only describes one run of the program.
[4] When passing a callback to a system that expects to call a C function, but one wants it to execute the method of a particular instance of a class written in C++, one uses a short trampoline to convert the C function-calling convention to the C++ method-calling convention. One way of writing such a trampoline is to use a thunk. [5]