'/opt/jdk/oracle-jdk-8/jre/bin/java'                       | '/opt/jdk/oracle-jdk-8/bin/jstack'
    }

    @Requires(UnitTestPreconditions.Windows)
    def 'can locate jstack on Windows'() {
        expect:
        new JavaProcessStackTracesMonitor.JavaProcessInfo('0', javaCommand).jstackCommand == jstackCommand

        where:

                return javaPath.resolve("../../../bin/jstack").normalize().toString();
            } else {
                return javaPath.resolve("../../bin/jstack").normalize().toString();
            }
        }

        String jstack() {
            try {
                ExecResult result = run(getJstackCommand(), pid);

            def jdkBinDir = new File(System.getProperty("java.home"), "../bin").canonicalFile
            if (jdkBinDir.isDirectory() && new File(jdkBinDir, "jstack").exists()) {
                println "--------------------------------------------------"
                def jstackOutput = ["${jdkBinDir}/jstack", pid].execute().text
                println jstackOutput
                println "--------------------------------------------------"
            }

            }
        } finally {
            httpExchange.close();
        }
    }

    // Dump all JVMs' threads on the machine to troubleshoot deadlock issues
    // We observed jstack hanging on windows, so for now we only enable it for Linux
    private void dumpThreadsUponTimeout(String stacktrace) {

	// allocation.
	if newsize < fixedStack {
		return
	}
	// Compute how much of the stack is currently in use and only
	// shrink the stack if gp is using less than a quarter of its
	// current stack. The currently used stack includes everything
	// down to the SP plus the stack guard space that ensures
	// there's room for nosplit functions.
	avail := gp.stack.hi - gp.stack.lo

)

func StackNosplit(race bool) int {
	// This arithmetic must match that in runtime/stack.go:stackNosplit.
	return abi.StackNosplitBase * stackGuardMultiplier(race)
}

// stackGuardMultiplier returns a multiplier to apply to the default
// stack guard size. Larger multipliers are used for non-optimized
// builds that have larger stack frames or for specific targets.
func stackGuardMultiplier(race bool) int {

// license that can be found in the LICENSE file.

package codegen

import "runtime"

// This file contains code generation tests related to the use of the
// stack.

// Check that stack stores are optimized away.

// 386:"TEXT\t.*, [$]0-"
// amd64:"TEXT\t.*, [$]0-"
// arm:"TEXT\t.*, [$]-4-"
// arm64:"TEXT\t.*, [$]0-"
// mips:"TEXT\t.*, [$]-4-"
// ppc64x:"TEXT\t.*, [$]0-"

	//
	// This value must be multiplied by the stack guard multiplier, so do not
	// use it directly. See runtime/stack.go:stackNosplit and
	// cmd/internal/objabi/stack.go:StackNosplit.
	StackNosplitBase = 800

	// We have three different sequences for stack bounds checks, depending on
	// whether the stack frame of a function is small, big, or huge.

	// After a stack split check the SP is allowed to be StackSmall bytes below

)

// PrintStack prints to standard error the stack trace returned by runtime.Stack.
func PrintStack() {
	os.Stderr.Write(Stack())
}

// Stack returns a formatted stack trace of the goroutine that calls it.
// It calls [runtime.Stack] with a large enough buffer to capture the entire trace.
func Stack() []byte {
	buf := make([]byte, 1024)
	for {
		n := runtime.Stack(buf, false)
		if n < len(buf) {
			return buf[:n]
		}

				inlined := (j != len(loc.Line)-1)
				stack.Sources = append(stack.Sources, getSrc(line, inlined))
			}
		}

		leaf := stack.Sources[len(stack.Sources)-1]
		s.Sources[leaf].Self += value
		s.Stacks = append(s.Stacks, stack)
	}
}

func (s *StackSet) fillPlaces() {
	for i, stack := range s.Stacks {
		seenSrcs := map[int]bool{}
		for j, src := range stack.Sources {
			if seenSrcs[src] {
				continue