Hi, The following example shows that bash uses xmalloc. But it seems that using xmalloc is not a good practice. Is it better to use malloc instead of xmalloc? In this test case, after `./main 1000000` failed I still want to run the rest commands. So it sounds like malloc is better.
http://stackoverflow.com/questions/7590254/what-is-the-difference-between-xmalloc-and-malloc ~$ cat main.sh #!/usr/bin/env bash # vim: set noexpandtab tabstop=2: ulimit -Sv 1000 set -v ./main 100000 ./main 1000000 ./main 10000000 ./main 100000000 ~$ cat main.c // vim: set noexpandtab tabstop=2: #include <stdlib.h> #include <stdio.h> int main(int argc, char *argv[]) { //printf("%s\n", "Hello World!"); size_t size = atoi(argv[1]); void *ptr; if((ptr = malloc(size)) == NULL) { perror("malloc"); exit(2); } else { printf("%p\n", ptr); free(ptr); } return 0; } ~$ ./main.sh ./main 100000 ./main.sh: xmalloc: .././variables.c:3997: cannot allocate 1313 bytes (53248 bytes allocated) -- Regards, Peng
