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Make stdin unbuffered when appropriate

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Justine Tunney 2024-05-25 07:57:13 -07:00
parent 7724664b13
commit edb03b89d8
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1 changed files with 5 additions and 0 deletions
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5
libc/stdio/stdin.c
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@ -17,10 +17,12 @@
│ PERFORMANCE OF THIS SOFTWARE. │ │ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/ ╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h" #include "libc/calls/calls.h"
#include "libc/calls/struct/stat.h"
#include "libc/stdio/internal.h" #include "libc/stdio/internal.h"
#include "libc/stdio/stdio.h" #include "libc/stdio/stdio.h"
#include "libc/sysv/consts/fileno.h" #include "libc/sysv/consts/fileno.h"
#include "libc/sysv/consts/o.h" #include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/s.h"
#include "libc/thread/thread.h" #include "libc/thread/thread.h"
/** /**
@ -31,11 +33,14 @@ FILE *stdin;
static FILE __stdin; static FILE __stdin;
__attribute__((__constructor__(60))) static textstartup void initin(void) { __attribute__((__constructor__(60))) static textstartup void initin(void) {
struct stat st;
stdin = &__stdin; stdin = &__stdin;
stdin->fd = STDIN_FILENO; stdin->fd = STDIN_FILENO;
stdin->iomode = O_RDONLY; stdin->iomode = O_RDONLY;
stdin->buf = stdin->mem; stdin->buf = stdin->mem;
stdin->size = sizeof(stdin->mem); stdin->size = sizeof(stdin->mem);
stdin->lock._type = PTHREAD_MUTEX_RECURSIVE; stdin->lock._type = PTHREAD_MUTEX_RECURSIVE;
if (fstat(STDIN_FILENO, &st) || !S_ISREG(st.st_mode))
stdin->bufmode = _IONBF;
__fflush_register(stdin); __fflush_register(stdin);
} }