mirror of
https://github.com/tmux-plugins/tmux-continuum.git
synced 2024-11-14 22:28:47 +00:00
721890d22f
Fixes the case where multiple tmux sessions call auto-save at the same time, which occasionally results in multiple instances of save_all() running in parallel and causing issues like #3 and tmux-plugins/tmux-resurrect#294. The sequence in main() is: 1. Check enough_time_since_last_run_passed 2. Save 3. Update last_save_timestamp. The race here is: * process A finishes step 1 and is busy with step 2. The timestamp is not updated yet. * process B comes to step 1, sees the old timestamp and proceeds to step 2, too.
46 lines
1.3 KiB
Bash
Executable File
46 lines
1.3 KiB
Bash
Executable File
#!/usr/bin/env bash
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CURRENT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
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source "$CURRENT_DIR/helpers.sh"
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source "$CURRENT_DIR/variables.sh"
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source "$CURRENT_DIR/shared.sh"
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supported_tmux_version_ok() {
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"$CURRENT_DIR/check_tmux_version.sh" "$SUPPORTED_VERSION"
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}
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get_interval() {
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get_tmux_option "$auto_save_interval_option" "$auto_save_interval_default"
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}
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auto_save_not_disabled() {
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[ "$(get_interval)" -gt 0 ]
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}
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enough_time_since_last_run_passed() {
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local last_saved_timestamp="$(get_tmux_option "$last_auto_save_option" "0")"
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local interval_minutes="$(get_interval)"
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local interval_seconds="$((interval_minutes * 60))"
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local next_run="$((last_saved_timestamp + $interval_seconds))"
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[ "$(current_timestamp)" -ge "$next_run" ]
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}
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fetch_and_run_tmux_resurrect_save_script() {
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local resurrect_save_script_path="$(get_tmux_option "$resurrect_save_path_option" "")"
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if [ -n "$resurrect_save_script_path" ]; then
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"$resurrect_save_script_path" "quiet" >/dev/null 2>&1 &
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set_last_save_timestamp
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fi
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}
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main() {
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(
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flock -n 101 || return # The code below is not thread-safe.
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if supported_tmux_version_ok && auto_save_not_disabled && enough_time_since_last_run_passed; then
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fetch_and_run_tmux_resurrect_save_script
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fi
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) 101>/tmp/tmux-continuum-autosave.lockfile
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}
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main
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