Search results
Results from the WOW.Com Content Network
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 ...
In computer programming, tracing garbage collection is a form of automatic memory management that consists of determining which objects should be deallocated ("garbage collected") by tracing which objects are reachable by a chain of references from certain "root" objects, and considering the rest as "garbage" and collecting them.
Trace register allocation is a recent approach developed by Eisl et al. [3] [5] This technique handles the allocation locally: it relies on dynamic profiling data to determine which branches will be the most frequently used in a given control flow graph. It then infers a set of "traces" (i.e. code segments) in which the merge point is ignored ...
The language, inspired by C, includes added functions and variables specific to tracing. D programs resemble AWK programs in structure; they consist of a list of one or more probes (instrumentation points), and each probe is associated with an action.
In GCC on Linux, this can be done using the following commands for a C program: $ gcc yourProgram.c -g $ ./a.out Memory leak information will be reported in the file specified by the MALLOC_TRACE environment variable.
In C and C++, return exp; (where exp is an expression) is a statement that tells a function to return execution of the program to the calling function, and report the value of exp. If a function has the return type void , the return statement can be used without a value, in which case the program just breaks out of the current function and ...
Newer processors contain a dedicated stack engine to optimize stack operations. Pentium M was the first x86 processor to introduce a stack engine. In its implementation, the stack pointer is split among two registers: ESP O , which is a 32-bit register, and ESP d , an 8-bit delta value that is updated directly by stack operations.
The canonical method for exploiting a stack-based buffer overflow is to overwrite the function return address with a pointer to attacker-controlled data (usually on the stack itself). [ 3 ] [ 6 ] This is illustrated with strcpy() in the following example: