2,257
edits
Changes
Jump to navigation
Jump to search
Line 15:
Line 15: + +
→Collect process tree and freeze it
=== Collect process tree and freeze it ===
=== Collect process tree and freeze it ===
The '''$pid''' of a process group leader is obtained from the command line (<code>--tree</code> option). By using this '''$pid''' the dumper walks though '''/proc/$pid/task/''' directory collecting threads and through the '''/proc/$pid/task/$tid/children''' to gathers children recursively. While walking tasks are stopped using the <code>ptrace</code>'s <code>PTRACE_SEIZE</code> command.
The '''$pid''' of a process group leader is obtained from the command line (<code>--tree</code> option). By using this '''$pid''' the dumper walks though '''/proc/$pid/task/''' directory collecting threads and through the '''/proc/$pid/task/$tid/children''' to gathers children recursively. While walking tasks are stopped using the <code>ptrace</code>'s <code>PTRACE_SEIZE</code> command.
''See also: [[Freezing the tree]]''
=== Collect tasks' resources and dump them ===
=== Collect tasks' resources and dump them ===