// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Tests a many interesting cases (network, syscalls, a little GC, busy goroutines,
// blocked goroutines, LockOSThread, pipes, and GOMAXPROCS).

//go:build ignore

package main

import (
	"log"
	"net"
	"os"
	"runtime"
	"runtime/trace"
	"sync"
	"time"
)

 * these function calls.
 */

// argset_t matches runtime/cgocall.go:argset.
typedef struct {
	uintptr_t* args;
	uintptr_t retval;
} argset_t;

// libc backed posix-compliant syscalls.

#define SET_RETVAL(fn) \
  uintptr_t ret = (uintptr_t) fn ; \
  if (ret == (uintptr_t) -1) {	   \
    x->retval = (uintptr_t) errno; \
  } else                           \
    x->retval = ret

void

				filelock.Unlock(f)
				f.Close()
				return nil, err
			}
		}
	}

	return f, nil
}

func closeFile(f *os.File) error {
	// Since locking syscalls operate on file descriptors, we must unlock the file
	// while the descriptor is still valid — that is, before the file is closed —
	// and avoid unlocking files that are already closed.
	err := filelock.Unlock(f)

# let it know that a system call is running.
#
# * syscall_${GOOS}.go
#
# This hand-written Go file implements system calls that need
# special handling and lists "//sys" comments giving prototypes
# for ones that can be auto-generated.  Mksyscall reads those
# comments to generate the stubs.
#
# * syscall_${GOOS}_${GOARCH}.go
#
# Same as syscall_${GOOS}.go except that it contains code specific

// Copyright 2023 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Tests a many interesting cases (network, syscalls, a little GC, busy goroutines,
// blocked goroutines, LockOSThread, pipes, and GOMAXPROCS).

//go:build ignore

package main

import (
	"bytes"
	"io"
	"log"
	"net"
	"os"
	"runtime"
	"runtime/trace"
	"sync"

	// calculate the rectangular box size.
	maxContentWidth := max(line1Length, line2Length)

	// termWidth is set to a default one to use when we are
	// not able to calculate terminal width via OS syscalls
	termWidth := 25
	if width, err := pb.GetTerminalWidth(); err == nil {
		termWidth = width
	}

	// Box cannot be printed if terminal width is small than maxContentWidth
	if maxContentWidth > termWidth {

	EvGoSysCall         = 28 // syscall enter [timestamp, stack]
	EvGoSysExit         = 29 // syscall exit [timestamp, goroutine id, seq, real timestamp]
	EvGoSysBlock        = 30 // syscall blocks [timestamp]
	EvGoWaiting         = 31 // denotes that goroutine is blocked when tracing starts [timestamp, goroutine id]
	EvGoInSyscall       = 32 // denotes that goroutine is in syscall when tracing starts [timestamp, goroutine id]

		if strings.Contains(s, frag) {
			return true
		}
	}

	return false
}

func openFile(name string, flag int, perm fs.FileMode) (*os.File, error) {
	// Plan 9 uses a mode bit instead of explicit lock/unlock syscalls.
	//
	// Per http://man.cat-v.org/plan_9/5/stat: “Exclusive use files may be open
	// for I/O by only one fid at a time across all clients of the server. If a
	// second open is attempted, it draws an error.”
	//

	}
	if from == trace.GoSyscall && to != trace.GoRunning {
		// Exiting blocked syscall.
		gs.syscallEnd(ev.Time(), true, ctx)
		gs.blockedSyscallEnd(ev.Time(), ev.Stack(), ctx)
	} else if from == trace.GoSyscall {
		// Check if we're exiting a syscall in a non-blocking way.
		gs.syscallEnd(ev.Time(), false, ctx)
	}

	// Handle syscalls.
	if to == trace.GoSyscall {
		start := ev.Time()

	origLimit := syscall.OrigRlimitNofile()
	origRlimitNofile := syscall.GetInternalOrigRlimitNofile()

	if origLimit == nil {
		defer origRlimitNofile.Store(origLimit)
		origRlimitNofile.Store(&syscall.Rlimit{
			Cur: 1024,
			Max: 65536,
		})
	}

	// Get current process's nofile limit
	var lim syscall.Rlimit
	if err := syscall.Prlimit(0, syscall.RLIMIT_NOFILE, nil, &lim); err != nil {