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libc MT-safety, part 2.

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Add a lock to FILE and define an additional flag.
This commit is contained in:
Daniel Eischen 2001-02-11 22:04:18 +00:00
parent d3d8587299
commit 5b62961a49
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=72372
1 changed files with 4 additions and 0 deletions
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4
include/stdio.h
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@ -68,6 +68,8 @@ struct __sbuf {
int _size;
};
struct __file_lock;
/*
* stdio state variables.
*
@ -125,6 +127,7 @@ typedef struct __sFILE {
/* Unix stdio files get aligned to block boundaries on fseek() */
int _blksize; /* stat.st_blksize (may be != _bf._size) */
fpos_t _offset; /* current lseek offset (see WARNING) */
struct __file_lock *_lock; /* used for MT-safety */
} FILE;
__BEGIN_DECLS
@ -147,6 +150,7 @@ __END_DECLS
#define __SOFF 0x1000 /* set iff _offset is in fact correct */
#define __SMOD 0x2000 /* true => fgetln modified _p text */
#define __SALC 0x4000 /* allocate string space dynamically */
#define __SIGN 0x8000 /* ignore this file in _fwalk */
/*
* The following three definitions are for ANSI C, which took them