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-rw-r--r--cmd/utils/fdlimit_windows.go41
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diff --git a/cmd/utils/fdlimit_windows.go b/cmd/utils/fdlimit_windows.go
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+// Copyright 2016 The go-ethereum Authors
+// This file is part of go-ethereum.
+//
+// go-ethereum is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// go-ethereum is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with go-ethereum. If not, see <http://www.gnu.org/licenses/>.
+
+package utils
+
+import "errors"
+
+// raiseFdLimit tries to maximize the file descriptor allowance of this process
+// to the maximum hard-limit allowed by the OS.
+func raiseFdLimit(max uint64) error {
+ // This method is NOP by design:
+ // * Linux/Darwin counterparts need to manually increase per process limits
+ // * On Windows Go uses the CreateFile API, which is limited to 16K files, non
+ // changeable from within a running process
+ // This way we can always "request" raising the limits, which will either have
+ // or not have effect based on the platform we're running on.
+ if max > 16384 {
+ return errors.New("file descriptor limit (16384) reached")
+ }
+ return nil
+}
+
+// getFdLimit retrieves the number of file descriptors allowed to be opened by this
+// process.
+func getFdLimit() (int, error) {
+ // Please see raiseFdLimit for the reason why we use hard coded 16K as the limit
+ return 16384, nil
+}