feat(process): add timer cleanup on process exit#1797
Merged
fslongjin merged 2 commits intoDragonOS-Community:masterfrom Mar 1, 2026
Merged
feat(process): add timer cleanup on process exit#1797fslongjin merged 2 commits intoDragonOS-Community:masterfrom
fslongjin merged 2 commits intoDragonOS-Community:masterfrom
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- Implement`exit_timers()`method to clean up alarm, itimer, and POSIX timers - Add`timer_ids()`method to iterate over POSIX timer IDs - Refactor alarm timer to use weak reference to PCB for safety Signed-off-by: longjin <longjin@DragonOS.org>
do_lookup_follow_symlink() previously followed symlinks via recursive calls to lookup_follow_symlink2(), with up to 40 levels of recursion. Each stack frame allocated a 256-byte read buffer, multiple Strings, and metadata queries, causing kernel stack overflow when deeply nested symlinks were encountered (e.g. gVisor ExecTest.SymlinkLimitExceeded). Replace the recursive approach with an iterative loop that updates result, rest_path, and a symlink_follows_remaining counter in-place. Absolute symlink targets restart resolution from process_root_inode; relative targets continue from the current directory. Stack usage is now O(1) regardless of symlink nesting depth. Signed-off-by: longjin <longjin@DragonOS.org>
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exit_timers()method to clean up alarm, itimer, and POSIX timerstimer_ids()method to iterate over POSIX timer IDs