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Condition variables changes:

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* Removed left-over commented C implementation.
* It is now possible for a thread to wait for more than one condition
  variable at a time.
* Made waiting for condition variables optionally interruptable.
* Renamed Notify() method to NotifyAll() and added a NotifyOne(), so
  that it is now possible to wake up only one of the waiting threads.
Pretty much untested at the moment.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22081 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Ingo Weinhold
2007-08-26 23:53:12 +00:00
parent 61b50eed27
commit ff308b0b49
5 changed files with 250 additions and 195 deletions
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src/system/kernel/thread.cpp
+13 -4
View File
@@ -11,6 +11,7 @@
#include <OS.h>
#include <condition_variable.h>
#include <cpu.h>
#include <int.h>
#include <kimage.h>
@@ -222,7 +223,7 @@ create_thread_struct(struct thread *inthread, const char *name,
thread->team = NULL;
thread->cpu = cpu;
thread->sem.blocking = -1;
thread->condition_variable = NULL;
thread->condition_variable_entry = NULL;
thread->fault_handler = 0;
thread->page_faults_allowed = 1;
thread->kernel_stack_area = -1;
@@ -871,7 +872,15 @@ _dump_thread_info(struct thread *thread)
kprintf(" sem.count: 0x%lx\n", thread->sem.count);
kprintf(" sem.acquire_status: 0x%lx\n", thread->sem.acquire_status);
kprintf(" sem.flags: 0x%lx\n", thread->sem.flags);
kprintf("condition variable: %p\n", thread->condition_variable);
kprintf("condition variables:");
PrivateConditionVariableEntry* entry = thread->condition_variable_entry;
while (entry != NULL) {
kprintf(" %p", entry->Variable());
entry = entry->ThreadNext();
}
kprintf("\n");
kprintf("fault_handler: %p\n", (void *)thread->fault_handler);
kprintf("args: %p %p\n", thread->args1, thread->args2);
kprintf("entry: %p\n", (void *)thread->entry);
@@ -993,8 +1002,8 @@ dump_thread_list(int argc, char **argv)
// does it block on a semaphore or a condition variable?
if (thread->state == B_THREAD_WAITING) {
if (thread->condition_variable)
kprintf("%p ", thread->condition_variable);
if (thread->condition_variable_entry)
kprintf("%p ", thread->condition_variable_entry->Variable());
else
kprintf("%10lx ", thread->sem.blocking);
} else