ref: 12e226ac6798412271020d42645f69138715c519
dir: /utils/ld/Posix.c/
#include "l.h" #include <sys/types.h> #include <sys/stat.h> #include <sys/times.h> #undef getwd #include <unistd.h> /* For sysconf() and _SC_CLK_TCK */ /* * fake malloc */ void* malloc(size_t n) { void *p; while(n & 7) n++; while(nhunk < n) gethunk(); p = hunk; nhunk -= n; hunk += n; return p; } void free(void *p) { USED(p); } void* calloc(size_t m, size_t n) { void *p; n *= m; p = malloc(n); memset(p, 0, n); return p; } void* realloc(void *p, size_t n) { fprint(2, "realloc called\n", p, n); abort(); return 0; } void* mysbrk(ulong size) { return (void*)sbrk(size); } double cputime(void) { struct tms tmbuf; double ret_val; /* * times() only fails if &tmbuf is invalid. */ (void)times(&tmbuf); /* * Return the total time (in system clock ticks) * spent in user code and system * calls by both the calling process and its children. */ ret_val = (double)(tmbuf.tms_utime + tmbuf.tms_stime + tmbuf.tms_cutime + tmbuf.tms_cstime); /* * Convert to seconds. */ ret_val *= sysconf(_SC_CLK_TCK); return ret_val; } int fileexists(char *name) { struct stat sb; return stat(name, &sb) >= 0; }