brk和sbrk用法
include of 用法    英文回答：
    brk and sbrk are system calls in Unix-like operating systems that are used to manipulate the size of the process's data segment, which is the portion of the virtual address space that stores global and static variables.
    The brk system call sets the end of the data segment to a specified address, effectively resizing it. It takes a single argument, which is the new end address of the data segment. The brk system call returns 0 on success and -1 on failure.
    Here's an example of using brk in C:
    c.
    #include <unistd.h>。
    int main() {。
        void new_end_address = (void)0x400000; // new end address for the data segment.
        if (brk(new_end_address) == 0) {。
            // Successfully resized the data segment.
            //
        } else {。
            // Failed to resize the data segment.
            // Handle
        }。
        return 0;
    }。
    The sbrk system call is similar to brk, but instead of specifying an absolute address, it takes a single argument that specifies the number of bytes to increase or decrease the data segment by. The sbrk system call returns the previous end address of the data segment on success and -1 on failure.
    Here's an example of using sbrk in C:
    c.
    #include <unistd.h>。
    int main() {。
        int increment = 1024; // number of bytes to increase the data segment by.
        void previous_end_address = sbrk(increment);
        if (previous_end_address != (void)-1) {。
            // Successfully resized the data segment.
            //
        } else {。
            // Failed to resize the data segment.

版权声明：本站内容均来自互联网，仅供演示用，请勿用于商业和其他非法用途。如果侵犯了您的权益请与我们联系QQ:729038198，我们将在24小时内删除。