diff options
| author | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-03-11 00:48:35 +0100 |
|---|---|---|
| committer | cinap_lenrek <cinap_lenrek@gmx.de> | 2013-03-11 00:48:35 +0100 |
| commit | 48b0c10681bb4e0785fa9f737d287531d06fecb7 (patch) | |
| tree | 568f7cdd23400f1e781b82aa044ad39748ff9d78 /sys/src/ape/lib/ap/stdio/sopenr.c | |
| parent | 530a2bc5e99ad83c46ce015544cf30173c145bcc (diff) | |
ape/stdio: make fopen() quasi threadsafe for python
python uses processes sharing memory. it requires at least fopen() to
be called by multiple threads at once so we introduce _IO_newfile()
which allocates the FILE structure slot under a lock.
Diffstat (limited to 'sys/src/ape/lib/ap/stdio/sopenr.c')
| -rw-r--r-- | sys/src/ape/lib/ap/stdio/sopenr.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/sys/src/ape/lib/ap/stdio/sopenr.c b/sys/src/ape/lib/ap/stdio/sopenr.c index 279ec726b..964493abf 100644 --- a/sys/src/ape/lib/ap/stdio/sopenr.c +++ b/sys/src/ape/lib/ap/stdio/sopenr.c @@ -6,8 +6,9 @@ FILE *_IO_sopenr(const char *s){ FILE *f; - for(f=_IO_stream;f!=&_IO_stream[FOPEN_MAX];f++) if(f->state==CLOSED) break; - if(f==&_IO_stream[FOPEN_MAX]) return NULL; + + if((f=_IO_newfile())==NULL) + return NULL; f->buf=f->rp=(char *)s; /* what an annoyance const is */ f->bufl=strlen(s); f->wp=f->buf+f->bufl; |