61 lines
1.8 KiB
Bash
Executable File
61 lines
1.8 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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"$resurrect_save_script_path" "quiet" >/dev/null 2>&1 &
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set_last_save_timestamp
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fi
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}
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acquire_lock() {
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# Sometimes tmux starts multiple saves in parallel. We want only one
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# save to be running, otherwise we can get corrupted saved state.
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local lockdir_prefix="/tmp/tmux-continuum-$(current_tmux_server_pid)-lock-"
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# The following implements a lock that auto-expires after 100...200s.
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local lock_generation=$((`date +%s` / 100))
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local lockdir1="${lockdir_prefix}${lock_generation}"
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local lockdir2="${lockdir_prefix}$(($lock_generation + 1))"
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if mkdir "$lockdir1"; then
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trap "rmdir "$lockdir1"" EXIT
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if mkdir "$lockdir2"; then
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trap "rmdir "$lockdir1" "$lockdir2"" EXIT
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return 0
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fi
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fi
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return 1 # Someone else has the lock.
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}
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main() {
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if supported_tmux_version_ok && auto_save_not_disabled && enough_time_since_last_run_passed && acquire_lock; then
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fetch_and_run_tmux_resurrect_save_script
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fi
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}
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main
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