From eb0e8fa0b1960cff4bd65ebefc798f70273b0bc9 Mon Sep 17 00:00:00 2001 From: Rich Felker Date: Sun, 17 Apr 2011 16:32:15 -0400 Subject: debloat: use __syscall instead of syscall where possible don't waste time (and significant code size due to function call overhead!) setting errno when the result of a syscall does not matter or when it can't fail. --- src/stdio/__fdopen.c | 4 ++-- src/stdio/__lockfile.c | 2 +- src/stdio/fopen.c | 2 +- src/stdio/tmpfile.c | 2 +- 4 files changed, 5 insertions(+), 5 deletions(-) (limited to 'src/stdio') diff --git a/src/stdio/__fdopen.c b/src/stdio/__fdopen.c index a0102674..b13318e5 100644 --- a/src/stdio/__fdopen.c +++ b/src/stdio/__fdopen.c @@ -20,8 +20,8 @@ FILE *__fdopen(int fd, const char *mode) /* Set append mode on fd if opened for append */ if (*mode == 'a') { - int flags = syscall(SYS_fcntl, fd, F_GETFL, 0); - syscall(SYS_fcntl, fd, F_SETFL, flags | O_APPEND); + int flags = __syscall(SYS_fcntl, fd, F_GETFL); + __syscall(SYS_fcntl, fd, F_SETFL, flags | O_APPEND); } f->fd = fd; diff --git a/src/stdio/__lockfile.c b/src/stdio/__lockfile.c index c0948255..4e0239e7 100644 --- a/src/stdio/__lockfile.c +++ b/src/stdio/__lockfile.c @@ -15,6 +15,6 @@ void __lockfile(FILE *f) } while (a_cas(&f->lock, 0, tid)) if (spins) spins--, a_spin(); - else syscall(SYS_sched_yield); + else __syscall(SYS_sched_yield); f->lockcount = 1; } diff --git a/src/stdio/fopen.c b/src/stdio/fopen.c index c2a350d1..469de6f0 100644 --- a/src/stdio/fopen.c +++ b/src/stdio/fopen.c @@ -27,7 +27,7 @@ FILE *fopen(const char *filename, const char *mode) f = __fdopen(fd, mode); if (f) return f; - syscall(SYS_close, fd); + __syscall(SYS_close, fd); return 0; } diff --git a/src/stdio/tmpfile.c b/src/stdio/tmpfile.c index 18c232f7..926d6601 100644 --- a/src/stdio/tmpfile.c +++ b/src/stdio/tmpfile.c @@ -17,7 +17,7 @@ FILE *tmpfile(void) fd = syscall(SYS_open, s, O_RDWR|O_CREAT|O_EXCL|O_LARGEFILE, 0600); if (fd >= 0) { f = __fdopen(fd, "w+"); - syscall(SYS_unlink, s); + __syscall(SYS_unlink, s); return f; } } -- cgit v1.2.1