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always add memory streams to stdio open file list
per interpretation for austin group issue #626, fflush(0) and exit() must block waiting for a lock if another thread has locked a memory stream with flockfile. this adds some otherwise-unnecessary synchronization cost to use of memory streams, but there was already a synchronization cost calling malloc anyway. previously the stream was only added to the open file list in single-threaded programs, so that upon subsequent call to pthread_create, locking could be turned on for the stream.
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@ -108,12 +108,13 @@ FILE *fmemopen(void *restrict buf, size_t size, const char *restrict mode)
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f->seek = mseek;
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f->close = mclose;
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if (!libc.threaded) {
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f->lock = -1;
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f->next = libc.ofl_head;
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if (libc.ofl_head) libc.ofl_head->prev = f;
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libc.ofl_head = f;
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}
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if (!libc.threaded) f->lock = -1;
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OFLLOCK();
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f->next = libc.ofl_head;
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if (libc.ofl_head) libc.ofl_head->prev = f;
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libc.ofl_head = f;
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OFLUNLOCK();
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return f;
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}
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@ -77,12 +77,13 @@ FILE *open_memstream(char **bufp, size_t *sizep)
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f->seek = ms_seek;
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f->close = ms_close;
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if (!libc.threaded) {
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f->lock = -1;
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f->next = libc.ofl_head;
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if (libc.ofl_head) libc.ofl_head->prev = f;
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libc.ofl_head = f;
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}
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if (!libc.threaded) f->lock = -1;
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OFLLOCK();
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f->next = libc.ofl_head;
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if (libc.ofl_head) libc.ofl_head->prev = f;
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libc.ofl_head = f;
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OFLUNLOCK();
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return f;
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}
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@ -79,12 +79,13 @@ FILE *open_wmemstream(wchar_t **bufp, size_t *sizep)
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f->seek = wms_seek;
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f->close = wms_close;
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if (!libc.threaded) {
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f->lock = -1;
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f->next = libc.ofl_head;
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if (libc.ofl_head) libc.ofl_head->prev = f;
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libc.ofl_head = f;
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}
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if (!libc.threaded) f->lock = -1;
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OFLLOCK();
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f->next = libc.ofl_head;
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if (libc.ofl_head) libc.ofl_head->prev = f;
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libc.ofl_head = f;
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OFLUNLOCK();
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return f;
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}
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