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retry aio sendfile if data are ready

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This commit is contained in:
Igor Sysoev 2009-08-31 14:00:16 +00:00
parent 06bb9d294a
commit 9f9054df82
1 changed files with 45 additions and 36 deletions
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15
src/http/ngx_http_copy_filter_module.c
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@ -133,6 +133,7 @@ ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in)
r->request_output = 1;
}
for ( ;; ) {
rc = ngx_output_chain(ctx, in);
if (ctx->in == NULL) {
@ -148,6 +149,7 @@ ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in)
#if (NGX_HAVE_FILE_AIO && NGX_HAVE_AIO_SENDFILE)
if (c->busy_sendfile) {
ssize_t n;
off_t offset;
ngx_file_t *file;
ngx_http_ephemeral_t *e;
@ -161,14 +163,21 @@ ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in)
if (c->aio_sendfile == 0) {
ngx_log_error(NGX_LOG_ALERT, c->log, 0,
"sendfile(%V) returned busy again", &file->name);
"sendfile(%V) returned busy again",
&file->name);
}
}
c->busy_sendfile = NULL;
e = (ngx_http_ephemeral_t *) &r->uri_start;
(void) ngx_file_aio_read(file, e->preload, 4, offset, r->pool);
n = ngx_file_aio_read(file, e->preload, 4, offset, r->pool);
if (n > 0) {
continue;
}
rc = n;
if (file->aio) {
file->aio->data = r;
@ -178,11 +187,11 @@ ngx_http_copy_filter(ngx_http_request_t *r, ngx_chain_t *in)
r->aio = 1;
}
}
#endif
return rc;
}
}
#if (NGX_HAVE_FILE_AIO)