ref: bdc1b187c45dbaeaa7dadce4d7999d9d550ec78f
dir: /sys/src/cmd/cwfs/proc.c/
#include "all.h" #include "io.h" /* * based on libthread's threadsetname, but drags in less library code. * actually just sets the arguments displayed. */ void procsetname(char *fmt, ...) { int fd; char *cmdname; char buf[128]; va_list arg; va_start(arg, fmt); cmdname = vsmprint(fmt, arg); va_end(arg); if (cmdname == nil) return; snprint(buf, sizeof buf, "#p/%d/args", getpid()); if((fd = open(buf, OWRITE)) >= 0){ write(fd, cmdname, strlen(cmdname)+1); close(fd); } free(cmdname); } void newproc(void (*f)(void *), void *arg, char *text) { int kid = rfork(RFPROC|RFMEM|RFNOWAIT); if (kid < 0) sysfatal("can't fork: %r"); if (kid == 0) { procsetname("%s", text); (*f)(arg); exits("child returned"); } }