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* There was no reason to copy the "userland calls exit_thread()" stub with interrupts

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turned off - accessing userland memory. Now, arch_thread_enter_userspace() does that
  job, and as a result, may also fail.
* dump_thread() now directly prints the info of the current thread when used without
  argument (rather than iterating the thread list to look for the current thread).
* If arch_thread_init_tls() fails upon thread creation, the function will now return
  an error.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19775 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Axel Dörfler
2007-01-12 18:26:32 +00:00
parent f5fa54f798
commit 8fc075ac5c
7 changed files with 43 additions and 46 deletions
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src/system/kernel/thread.c
+9 -10
View File
@@ -309,9 +309,10 @@ _create_user_thread_kentry(void)
thread_at_kernel_exit();
// jump to the entry point in user space
arch_thread_enter_uspace(thread, (addr_t)thread->entry, thread->args1, thread->args2);
arch_thread_enter_userspace(thread, (addr_t)thread->entry,
thread->args1, thread->args2);
// never get here
// only get here if the above call fails
return 0;
}
@@ -462,14 +463,12 @@ create_thread(const char *name, team_id teamID, thread_entry_func entry,
(void **)&thread->user_stack_base, B_BASE_ADDRESS,
thread->user_stack_size + TLS_SIZE, B_NO_LOCK,
B_READ_AREA | B_WRITE_AREA | B_STACK_AREA);
if (thread->user_stack_area < 0) {
// great, we have a fully running thread without a stack
dprintf("create_thread: unable to create user stack!\n");
if (thread->user_stack_area < B_OK
|| arch_thread_init_tls(thread) < B_OK) {
// great, we have a fully running thread without a (usable) stack
dprintf("create_thread: unable to create proper user stack!\n");
status = thread->user_stack_area;
kill_thread(thread->id);
} else {
// now that the TLS area is allocated, initialize TLS
arch_thread_init_tls(thread);
}
// copy the user entry over to the args field in the thread struct
@@ -603,8 +602,8 @@ dump_thread_info(int argc, char **argv)
}
if (argc == 1) {
name = NULL;
id = thread_get_current_thread()->id;
_dump_thread_info(thread_get_current_thread());
return 0;
} else {
name = argv[1];
id = strtoul(argv[1], NULL, 0);