Add unit tests for WorkerPool and add a working but poor implementation for Linux.

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@1466 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 40 insertions, 0 deletions

diff --git a/base/worker_pool.cc b/base/worker_pool.cc
index fb64c85..b2c8c2b 100644
--- a/base/worker_pool.cc
+++ b/base/worker_pool.cc
@@ -6,6 +6,9 @@
 
 #include "base/task.h"
 
+// TODO(dsh): Split this file into worker_pool_win.cc and worker_pool_posix.cc.
+#if defined(OS_WIN)
+
 namespace {
 
 DWORD CALLBACK WorkItemCallback(void* param) {
@@ -34,3 +37,40 @@ bool WorkerPool::PostTask(const tracked_objects::Location& from_here,
   return true;
 }
 
+#elif defined(OS_LINUX)
+
+namespace {
+
+void* PThreadCallback(void* param) {
+  Task* task = static_cast<Task*>(param);
+  task->Run();
+  delete task;
+  return 0;
+}
+
+}  // namespace
+
+bool WorkerPool::PostTask(const tracked_objects::Location& from_here,
+                          Task* task, bool task_is_slow) {
+  task->SetBirthPlace(from_here);
+  pthread_t thread;
+  pthread_attr_t attr;
+
+  // POSIX does not have a worker thread pool implementation.  For now we just
+  // create a thread for each task, and ignore |task_is_slow|.
+  // TODO(dsh): Implement thread reuse.
+  pthread_attr_init(&attr);
+  pthread_attr_setdetachstate(&attr, PTHREAD_CREATE_DETACHED);
+
+  int err = pthread_create(&thread, &attr, PThreadCallback, task);
+  pthread_attr_destroy(&attr);
+  if (err) {
+    DLOG(ERROR) << "pthread_create failed: " << err;
+    delete task;
+    return false;
+  }
+
+  return true;
+}
+
+#endif  // OS_LINUX