thejoker.msk/iris-context
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perf: prevent memory leak, data race and speed up ComputeCursorCol processing (#15)

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- fix(wrapper): memory leak and data race
(https://github.com/versenilvis/IRIS/commit/4361febfc92858f34ff2a2b77df8298addbefa75)
- perf(overlay):speed up ComputeCursorCol processing
(https://github.com/versenilvis/IRIS/commit/918b067cfc9f71c4fa52e1573865ab3612acb7d8)
This commit is contained in:
VERSE
2026-07-02 16:53:42 +07:00
committed by GitHub
parent c7960aac46
commit 8f89c15e72
2 changed files with 45 additions and 37 deletions
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root/wrapper.go
+40 -37
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@@ -82,7 +82,7 @@ func runWrapper() {
var naiveBuffer string
cursorOffset := 0
var bufferMu sync.Mutex
var userNavigated bool
var userNavigated atomic.Bool
var renderMenuNow func()
r, w, err := os.Pipe() // pipe for ipc communication from shell to iris
@@ -164,8 +164,8 @@ func runWrapper() {
}
if c.Process != nil {
cwd, err := os.Readlink(fmt.Sprintf("/proc/%d/cwd", c.Process.Pid))
if err != nil {
cwd, linkErr := os.Readlink(fmt.Sprintf("/proc/%d/cwd", c.Process.Pid))
if linkErr != nil {
ctx, cancel := context.WithTimeout(context.Background(), 500*time.Millisecond)
out, errCmd := exec.CommandContext(ctx, "lsof", "-p", fmt.Sprintf("%d", c.Process.Pid), "-a", "-d", "cwd", "-F", "n").Output()
cancel()
@@ -173,13 +173,13 @@ func runWrapper() {
for _, line := range strings.Split(string(out), "\n") {
if strings.HasPrefix(line, "n") {
cwd = strings.TrimSpace(line[1:])
err = nil
linkErr = nil
break
}
}
}
}
if err == nil {
if linkErr == nil {
_ = os.Chdir(cwd)
}
_ = syscall.Kill(c.Process.Pid, syscall.SIGKILL)
@@ -188,9 +188,9 @@ func runWrapper() {
restoreTerminal()
execArgs := []string{os.Args[0]}
if logDir, err := config.CachePath(); err == nil {
if logDir, pathErr := config.CachePath(); pathErr == nil {
argsFile := filepath.Join(logDir, "reload-args")
if data, err := os.ReadFile(argsFile); err == nil {
if data, readErr := os.ReadFile(argsFile); readErr == nil {
lines := strings.Split(string(data), "\n")
for _, line := range lines {
trimmed := strings.TrimSpace(line)
@@ -216,6 +216,18 @@ func runWrapper() {
pendingUpdate = startBackgroundUpdateCheck()
updatePrinted := false
shellPGID, err := unix.Getpgid(core.ShellPID)
if err != nil {
shellPGID = core.ShellPID
}
isExecuting := func() bool {
pgrp, err := unix.IoctlGetInt(int(ptmx.Fd()), unix.TIOCGPGRP)
if err != nil {
return false
}
return pgrp != shellPGID
}
// bridge pty output to actual stdout
go func() {
defer func() {
@@ -242,9 +254,12 @@ func runWrapper() {
bufferMu.Lock()
nbEmpty := naiveBuffer == ""
navigated := userNavigated.Load()
bufferMu.Unlock()
if nbEmpty && !userNavigated {
if isExecuting() {
lastPromptBuf = nil
} else if nbEmpty && !navigated {
lastPromptBuf = append(lastPromptBuf, buf[:n]...)
if idx := bytes.LastIndexByte(lastPromptBuf, '\n'); idx >= 0 {
lastPromptBuf = append([]byte(nil), lastPromptBuf[idx+1:]...)
@@ -261,18 +276,6 @@ func runWrapper() {
disableGhostText.Store(!config.Get().UI.GhostText)
var renderOverlay func()
isExecuting := func() bool {
pgrp, err := unix.IoctlGetInt(int(ptmx.Fd()), unix.TIOCGPGRP)
if err != nil {
return false
}
shellPGID, err := unix.Getpgid(core.ShellPID)
if err != nil {
return pgrp != core.ShellPID
}
return pgrp != shellPGID
}
// listen for suggestion requests from shell scripts via the ipc pipe
go func() {
defer func() {
@@ -376,7 +379,7 @@ func runWrapper() {
modeCopy := activeMode
activeModeMu.RUnlock()
navCopy := userNavigated
navCopy := userNavigated.Load()
runes := []rune(bufCopy)
if offsetCopy > 0 && offsetCopy <= len(runes) {
@@ -435,7 +438,7 @@ func runWrapper() {
return
}
if userNavigated {
if userNavigated.Load() {
return
}
@@ -505,7 +508,7 @@ func runWrapper() {
if overlay.Visible && (inputSlice[i+2] == 'A' || inputSlice[i+2] == 'B') {
intercepted = true
userNavigated = true
userNavigated.Store(true)
overlay.UserNavigated = true
// clear ghost text synchronously
@@ -596,7 +599,7 @@ func runWrapper() {
cursorOffset = 0
bufferMu.Unlock()
userNavigated = true
userNavigated.Store(true)
overlay.UserNavigated = true
writeStdout([]byte(overlay.Render()))
@@ -648,7 +651,7 @@ func runWrapper() {
cursorOffset = len(naiveBuffer)
}
shouldOverlayDraw = true
userNavigated = false
userNavigated.Store(false)
}
bufferMu.Unlock()
isLeftRightArrow = true
@@ -668,7 +671,7 @@ func runWrapper() {
cursorOffset = 0
}
shouldOverlayDraw = true
userNavigated = false
userNavigated.Store(false)
}
bufferMu.Unlock()
isLeftRightArrow = true
@@ -710,14 +713,14 @@ func runWrapper() {
saveMode(activeMode)
activeModeMu.Unlock()
logger.Debugf("Intercepted Ctrl+R, toggled mode to %q", activeMode)
if userNavigated {
if userNavigated.Load() {
bufferMu.Lock()
naiveBuffer = overlay.TypedQuery
cursorOffset = 0
bufferMu.Unlock()
_, _ = ptmx.Write(append([]byte{0x15}, overlay.TypedQuery...))
}
userNavigated = false
userNavigated.Store(false)
overlay.UserNavigated = false
shouldOverlayDraw = true
// enter: enter behavior is a bit different from tab suggestions in code editor
@@ -746,7 +749,7 @@ func runWrapper() {
bufferMu.Unlock()
disableGhostText.Store(false)
shouldOverlayDraw = false
userNavigated = false
userNavigated.Store(false)
continue
} else if b == 0x09 { // tab: select suggestions
intercepted = true
@@ -776,7 +779,7 @@ func runWrapper() {
shouldOverlayDraw = true // <- rerender after tab to choose, if you set to false,
// when you press tab continually, it will print all folder from menu suggestions
// and make the cursor jump to next line
userNavigated = false
userNavigated.Store(false)
}
continue
}
@@ -793,7 +796,7 @@ func runWrapper() {
shouldOverlayDraw = true
}
bufferMu.Unlock()
userNavigated = false
userNavigated.Store(false)
case 0x05: // ctrl+e: move to end of line
bufferMu.Lock()
cursorOffset = 0
@@ -801,7 +804,7 @@ func runWrapper() {
shouldOverlayDraw = true
}
bufferMu.Unlock()
userNavigated = false
userNavigated.Store(false)
case 127, 0x08: // backspace: remove character
bufferMu.Lock()
@@ -824,7 +827,7 @@ func runWrapper() {
}
bufferMu.Unlock()
shouldOverlayDraw = true
userNavigated = false
userNavigated.Store(false)
case 0x17: // ctrl+w: delete the last word in the buffer
bufferMu.Lock()
trimBuf := strings.TrimRight(naiveBuffer, " ")
@@ -837,10 +840,10 @@ func runWrapper() {
cursorOffset = 0
bufferMu.Unlock()
shouldOverlayDraw = true
userNavigated = false
userNavigated.Store(false)
case 0x0c: // ctrl+l: clear screen but keep buffer and redraw menu
shouldOverlayDraw = true
userNavigated = false
userNavigated.Store(false)
case '\r', '\n', 0x03, 0x15: // enter, ctrl+c, ctrl+u: clear buffer on line reset
bufferMu.Lock()
naiveBuffer = ""
@@ -851,7 +854,7 @@ func runWrapper() {
activeModeMu.Unlock()
disableGhostText.Store(false)
writeStdout([]byte(overlay.ClearAndDisable()))
userNavigated = false
userNavigated.Store(false)
default:
// track normal printable characters in the buffer for matching
if b >= 32 && b <= 126 {
@@ -892,7 +895,7 @@ func runWrapper() {
}
bufferMu.Unlock()
shouldOverlayDraw = true
userNavigated = false
userNavigated.Store(false)
overlay.UserNavigated = false
}
}