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* wait_for_child() now behaves correctly when waiting for children of a specific

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process group. This fixes bug #996.
* As a result, the process group stuff and wait_for_child() got much simpler;
  get_death_entry() and update_wait_for_any() could go away completely.
* If a team goes away, all of its children are now "reparented" to the kernel team,
  instead of the team's parent - this follows common implementations (and POSIX if
  I understand it correctly), but not BeOS anymore. The OpenGroup Base says this
  about this topic: "If a parent process terminates without waiting for all of its
  child processes to terminate, the remaining child processes shall be assigned a
  new parent process ID corresponding to an implementation-defined system process."
* We wait too long in wait_test_4 which at least puts us on par with Linux; see
  comment in _user_setpgid().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20010 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2007-01-29 15:33:31 +00:00
parent 56a16fd0f9
commit 2e27874523
3 changed files with 60 additions and 163 deletions
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headers/private/kernel/thread_types.h
+6 -9
View File
@@ -1,5 +1,5 @@
/*
* Copyright 2004-2006, Haiku Inc.
* Copyright 2004-2007, Haiku Inc.
* Distributed under the terms of the MIT License.
*
* Thread definition and structures
@@ -48,7 +48,7 @@ struct image;
struct death_entry {
struct list_link link;
team_id team;
pid_t group_id;
thread_id thread;
status_t status;
uint16 reason;
@@ -61,19 +61,16 @@ struct process_session {
};
struct process_group {
struct process_group *next; // next in hash
struct process_group *next; // next in hash
struct process_session *session;
pid_t id;
sem_id dead_child_sem;
int32 wait_for_any;
int32 dead_child_waiters; // count of threads waiting for sem
struct team *teams;
};
struct team_loading_info {
struct thread *thread; // the waiting thread
status_t result; // the result of the loading
bool done; // set when loading is done/aborted
struct thread *thread; // the waiting thread
status_t result; // the result of the loading
bool done; // set when loading is done/aborted
};
struct team_watcher {