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| author | cinap_lenrek <cinap_lenrek@felloff.net> | 2020-12-07 14:27:46 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@felloff.net> | 2020-12-07 14:27:46 +0100 |
| commit | 1e2657ee9726e5dd9b8b1f39fa94bb02c1f5cdb7 (patch) | |
| tree | 91d89f9fca7d55dcf63c5aadcfcd0dd1cecac5d0 | |
| parent | f1e15da8f550b12196d57e245437251f6eb289b5 (diff) | |
| download | plan9front-1e2657ee9726e5dd9b8b1f39fa94bb02c1f5cdb7.tar.xz | |
libthread: simplify threadsetname()
- open /proc/n/args with OCEXEC flag
- reduce stack usage by using smaller buffer for path
- format pid as ulong
| -rw-r--r-- | sys/src/libthread/id.c | 6 |
1 files 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); } |