From 1e2657ee9726e5dd9b8b1f39fa94bb02c1f5cdb7 Mon Sep 17 00:00:00 2001 From: cinap_lenrek Date: Mon, 7 Dec 2020 14:27:46 +0100 Subject: libthread: simplify threadsetname() - open /proc/n/args with OCEXEC flag - reduce stack usage by using smaller buffer for path - format pid as ulong --- sys/src/libthread/id.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/sys/src/libthread/id.c b/sys/src/libthread/id.c index 22d60f423..289dc8698 100644 --- a/sys/src/libthread/id.c +++ b/sys/src/libthread/id.c @@ -59,7 +59,7 @@ void threadsetname(char *fmt, ...) { int fd; - char buf[128]; + char buf[32]; va_list arg; Proc *p; Thread *t; @@ -72,8 +72,8 @@ threadsetname(char *fmt, ...) t->cmdname = vsmprint(fmt, arg); va_end(arg); if(t->cmdname && p->nthreads == 1){ - snprint(buf, sizeof buf, "#p/%lud/args", _tos->pid); //getpid()); - if((fd = open(buf, OWRITE)) >= 0){ + snprint(buf, sizeof buf, "/proc/%lud/args", (ulong)getpid()); + if((fd = open(buf, OWRITE|OCEXEC)) >= 0){ write(fd, t->cmdname, strlen(t->cmdname)+1); close(fd); } -- cgit v1.2.3