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* io.c: add rb_read_internal() as blocking function.

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git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@14007 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
This commit is contained in:
ko1 2007-11-23 08:35:29 +00:00
parent 2a2e4bbbc3
commit c4c151bed8
2 changed files with 33 additions and 11 deletions
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4
ChangeLog
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@ -1,3 +1,7 @@
Fri Nov 23 17:34:24 2007 Koichi Sasada <ko1@atdot.net>
* io.c: add rb_read_internal() as blocking function.
Fri Nov 23 17:33:39 2007 Koichi Sasada <ko1@atdot.net>
* vm.c: fix comment.

40
io.c
View file

@ -902,6 +902,27 @@ rb_io_rewind(VALUE io)
return INT2FIX(0);
}
struct read_struct {
int fd;
void *buf;
size_t capa;
};
static VALUE
read_func(void *ptr)
{
struct read_struct *rs = (struct read_struct*)ptr;
return read(rs->fd, rs->buf, rs->capa);
}
static int
rb_read_internal(int fd, void *buf, size_t count)
{
struct read_struct rs = {fd, buf, count};
return rb_thread_blocking_region(read_func, &rs, RB_UBF_DFL, 0);
}
static int
io_fillbuf(rb_io_t *fptr)
{
@ -915,9 +936,9 @@ io_fillbuf(rb_io_t *fptr)
}
if (fptr->rbuf_len == 0) {
retry:
TRAP_BEG;
r = read(fptr->fd, fptr->rbuf, fptr->rbuf_capa);
TRAP_END; /* xxx: signal handler may modify rbuf */
{
r = rb_read_internal(fptr->fd, fptr->rbuf, fptr->rbuf_capa);
}
if (r < 0) {
if (rb_io_wait_readable(fptr->fd))
goto retry;
@ -1329,13 +1350,11 @@ io_getpartial(int argc, VALUE *argv, VALUE io, int nonblock)
if (RSTRING_LEN(str) != len) goto modified;
if (nonblock) {
rb_io_set_nonblock(fptr);
n = read(fptr->fd, RSTRING_PTR(str), len);
n = rb_read_internal(fptr->fd, RSTRING_PTR(str), len);
}
else {
TRAP_BEG;
n = read(fptr->fd, RSTRING_PTR(str), len);
TRAP_END;
}
n = rb_read_internal(fptr->fd, RSTRING_PTR(str), len);
}
if (n < 0) {
if (!nonblock && rb_io_wait_readable(fptr->fd))
goto again;
@ -2791,9 +2810,8 @@ rb_io_sysread(int argc, VALUE *argv, VALUE io)
if (RSTRING_LEN(str) != ilen) {
rb_raise(rb_eRuntimeError, "buffer string modified");
}
TRAP_BEG;
n = read(fptr->fd, RSTRING_PTR(str), ilen);
TRAP_END;
n = rb_read_internal(fptr->fd, RSTRING_PTR(str), ilen);
if (n == -1) {
rb_sys_fail(fptr->path);