Adding a number of utilities

LocHeap, LocThread, LocTimer, and moved MsgTask to
utils. Also added are LocRankable and LocRunnable
abstract classes.

Change-Id: I76975455d24f2c84a95dcc1b04f79fea562ea5ba
CRs-Fixed: 855222

1 files changed, 132 insertions, 0 deletions

diff --git a/utils/MsgTask.cpp b/utils/MsgTask.cpp
new file mode 100644
index 0000000..8b645dd
--- /dev/null
+++ b/utils/MsgTask.cpp
@@ -0,0 +1,132 @@
+/* Copyright (c) 2011-2013,2015 The Linux Foundation. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *     * Redistributions of source code must retain the above copyright
+ *       notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ *       copyright notice, this list of conditions and the following
+ *       disclaimer in the documentation and/or other materials provided
+ *       with the distribution.
+ *     * Neither the name of The Linux Foundation, nor the names of its
+ *       contributors may be used to endorse or promote products derived
+ *       from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
+ * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+#define LOG_NDDEBUG 0
+#define LOG_TAG "LocSvc_MsgTask"
+
+#include <cutils/sched_policy.h>
+#include <unistd.h>
+#include <MsgTask.h>
+#include <msg_q.h>
+#include <log_util.h>
+#include <loc_log.h>
+
+namespace loc_core {
+
+static void LocMsgDestroy(void* msg) {
+    delete (LocMsg*)msg;
+}
+
+MsgTask::MsgTask(const char* threadName, bool joinable) :
+    mQ(msg_q_init2()), mThread(new LocThread()) {
+    if (!mThread->start(threadName, this, joinable)) {
+        delete mThread;
+        mThread = NULL;
+    }
+}
+
+MsgTask::~MsgTask() {
+    msg_q_flush((void*)mQ);
+    msg_q_destroy((void**)&mQ);
+}
+
+void MsgTask::destroy() {
+    msg_q_unblock((void*)mQ);
+    if (mThread) {
+        LocThread* thread = mThread;
+        mThread = NULL;
+        delete thread;
+    } else {
+        delete this;
+    }
+}
+
+void MsgTask::sendMsg(const LocMsg* msg) const {
+    msg_q_snd((void*)mQ, (void*)msg, LocMsgDestroy);
+}
+
+void MsgTask::prerun() {
+    // make sure we do not run in background scheduling group
+    set_sched_policy(gettid(), SP_FOREGROUND);
+}
+
+bool MsgTask::run() {
+    LOC_LOGD("MsgTask::loop() listening ...\n");
+    LocMsg* msg;
+    msq_q_err_type result = msg_q_rcv((void*)mQ, (void **)&msg);
+    if (eMSG_Q_SUCCESS != result) {
+        LOC_LOGE("%s:%d] fail receiving msg: %s\n", __func__, __LINE__,
+                 loc_get_msg_q_status(result));
+        return false;
+    }
+
+    msg->log();
+    // there is where each individual msg handling is invoked
+    msg->proc();
+
+    delete msg;
+
+    return true;
+}
+
+// TODO: remove the below in the next patch
+void MsgTask::associate(tAssociate tAssociator) const {
+    struct LocAssociateMsg : public LocMsg {
+        tAssociate mAssociator;
+        LocAssociateMsg(tAssociate associator) :
+            mAssociator(associator) {}
+        inline virtual void proc() const {
+            static bool sAssociated = false;
+            if (!sAssociated) {
+                sAssociated = true;
+                mAssociator();
+            }
+        }
+    };
+    sendMsg(new LocAssociateMsg(tAssociator));
+}
+
+MsgTask::MsgTask(tCreate tCreator, const char* threadName) :
+    mQ(msg_q_init2()), mThread(new LocThread()) {
+    if (!mThread->start(threadName, this, false)) {
+        delete mThread;
+        mThread = NULL;
+    }
+}
+
+MsgTask::MsgTask(tAssociate tAssociator, const char* threadName)  :
+    mQ(msg_q_init2()), mThread(new LocThread()) {
+    if (!mThread->start(threadName, this, false)) {
+        delete mThread;
+        mThread = NULL;
+    } else {
+        associate(tAssociator);
+    }
+}
+
+} // namespace loc_core