github.com/maruel/nin@v0.0.0-20220112143044-f35891e3ce7e/subprocess_posix_test.go (about)

     1  // Copyright 2012 Google Inc. All Rights Reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  //go:build !windows
    16  // +build !windows
    17  
    18  package nin
    19  
    20  import (
    21  	"syscall"
    22  	"testing"
    23  )
    24  
    25  func subprocessTestFixUlimit(t *testing.T, numHandles int) {
    26  	var r syscall.Rlimit
    27  	if err := syscall.Getrlimit(syscall.RLIMIT_NOFILE, &r); err != nil {
    28  		t.Fatal("error getting rlimit ", err)
    29  	}
    30  	if r.Cur < uint64(numHandles) {
    31  		if r.Max < uint64(numHandles) {
    32  			t.Fatal("raise [ulimit -n] above %u (currently %lu) to make this test go", uint64(numHandles), r.Cur)
    33  		}
    34  		// Lots of test cases open files, so make it a bit larger.
    35  		r.Cur = 4 * uint64(numHandles)
    36  		if err := syscall.Setrlimit(syscall.RLIMIT_NOFILE, &r); err != nil {
    37  			t.Fatal(err)
    38  		}
    39  	}
    40  }