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runtime: extract canGenerateCore

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This commit is contained in:
zzkcode 2023-11-30 00:03:43 +08:00
parent 9e171360ce
commit 2a9f9e22d3
1 changed files with 43 additions and 72 deletions
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115
src/runtime/runtime-gdb_unix_test.go
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@ -20,6 +20,43 @@ import (
"testing"
)
func canGenerateCore(t *testing.T) bool {
// Ensure there is enough RLIMIT_CORE available to generate a full core.
var lim syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_CORE, &lim)
if err != nil {
t.Fatalf("error getting rlimit: %v", err)
}
// Minimum RLIMIT_CORE max to allow. This is a conservative estimate.
// Most systems allow infinity.
const minRlimitCore = 100 << 20 // 100 MB
if lim.Max < minRlimitCore {
t.Skipf("RLIMIT_CORE max too low: %#+v", lim)
}
// Make sure core pattern will send core to the current directory.
b, err := os.ReadFile("/proc/sys/kernel/core_pattern")
if err != nil {
t.Fatalf("error reading core_pattern: %v", err)
}
if string(b) != "core\n" {
t.Skipf("Unexpected core pattern %q", string(b))
}
coreUsesPID := false
b, err = os.ReadFile("/proc/sys/kernel/core_uses_pid")
if err == nil {
switch string(bytes.TrimSpace(b)) {
case "0":
case "1":
coreUsesPID = true
default:
t.Skipf("unexpected core_uses_pid value %q", string(b))
}
}
return coreUsesPID
}
const coreSignalSource = `
package main
@ -81,45 +118,12 @@ func TestGdbCoreSignalBacktrace(t *testing.T) {
t.Parallel()
checkGdbVersion(t)
// Ensure there is enough RLIMIT_CORE available to generate a full core.
var lim syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_CORE, &lim)
if err != nil {
t.Fatalf("error getting rlimit: %v", err)
}
// Minimum RLIMIT_CORE max to allow. This is a conservative estimate.
// Most systems allow infinity.
const minRlimitCore = 100 << 20 // 100 MB
if lim.Max < minRlimitCore {
t.Skipf("RLIMIT_CORE max too low: %#+v", lim)
}
// Make sure core pattern will send core to the current directory.
b, err := os.ReadFile("/proc/sys/kernel/core_pattern")
if err != nil {
t.Fatalf("error reading core_pattern: %v", err)
}
if string(b) != "core\n" {
t.Skipf("Unexpected core pattern %q", string(b))
}
coreUsesPID := false
b, err = os.ReadFile("/proc/sys/kernel/core_uses_pid")
if err == nil {
switch string(bytes.TrimSpace(b)) {
case "0":
case "1":
coreUsesPID = true
default:
t.Skipf("unexpected core_uses_pid value %q", string(b))
}
}
dir := t.TempDir()
coreUsesPID := canGenerateCore(t)
// Build the source code.
dir := t.TempDir()
src := filepath.Join(dir, "main.go")
err = os.WriteFile(src, []byte(coreSignalSource), 0644)
err := os.WriteFile(src, []byte(coreSignalSource), 0644)
if err != nil {
t.Fatalf("failed to create file: %v", err)
}
@ -296,45 +300,12 @@ func TestGdbCoreCrashThreadBacktrace(t *testing.T) {
t.Parallel()
checkGdbVersion(t)
// Ensure there is enough RLIMIT_CORE available to generate a full core.
var lim syscall.Rlimit
err := syscall.Getrlimit(syscall.RLIMIT_CORE, &lim)
if err != nil {
t.Fatalf("error getting rlimit: %v", err)
}
// Minimum RLIMIT_CORE max to allow. This is a conservative estimate.
// Most systems allow infinity.
const minRlimitCore = 100 << 20 // 100 MB
if lim.Max < minRlimitCore {
t.Skipf("RLIMIT_CORE max too low: %#+v", lim)
}
// Make sure core pattern will send core to the current directory.
b, err := os.ReadFile("/proc/sys/kernel/core_pattern")
if err != nil {
t.Fatalf("error reading core_pattern: %v", err)
}
if string(b) != "core\n" {
t.Skipf("Unexpected core pattern %q", string(b))
}
coreUsesPID := false
b, err = os.ReadFile("/proc/sys/kernel/core_uses_pid")
if err == nil {
switch string(bytes.TrimSpace(b)) {
case "0":
case "1":
coreUsesPID = true
default:
t.Skipf("unexpected core_uses_pid value %q", string(b))
}
}
dir := t.TempDir()
coreUsesPID := canGenerateCore(t)
// Build the source code.
dir := t.TempDir()
src := filepath.Join(dir, "main.go")
err = os.WriteFile(src, []byte(coreCrashThreadSource), 0644)
err := os.WriteFile(src, []byte(coreCrashThreadSource), 0644)
if err != nil {
t.Fatalf("failed to create file: %v", err)
}