Mesa (master): clover: Wrap event:: _status in a method to prevent unlocked access.

[Francisco Jerez]

Module: Mesa
Branch: master
Commit: 4022a468b2976c65e0d2afe9c9ac5804729e8641
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=4022a468b2976c65e0d2afe9c9ac5804729e8641

Author: Francisco Jerez <currojerez at riseup.net>
Date:   Sat May  9 16:22:33 2015 +0300

clover: Wrap event::_status in a method to prevent unlocked access.

Tested-by: Tom Stellard <thomas.stellard at amd.com>
CC: 10.5 <mesa-stable at lists.freedesktop.org>

---

 src/gallium/state_trackers/clover/core/event.cpp |   15 ++++++++++-----
 src/gallium/state_trackers/clover/core/event.hpp |    4 ++--
 2 files changed, 12 insertions(+), 7 deletions(-)

diff --git a/src/gallium/state_trackers/clover/core/event.cpp b/src/gallium/state_trackers/clover/core/event.cpp
index d03e0b4..969d19a 100644
--- a/src/gallium/state_trackers/clover/core/event.cpp
+++ b/src/gallium/state_trackers/clover/core/event.cpp
@@ -27,7 +27,7 @@ using namespace clover;
 
 event::event(clover::context &ctx, const ref_vector<event> &deps,
              action action_ok, action action_fail) :
-   context(ctx), _status(0), wait_count(1),
+   context(ctx), wait_count(1), _status(0),
    action_ok(action_ok), action_fail(action_fail) {
    for (auto &ev : deps)
       ev.chain(*this);
@@ -84,6 +84,11 @@ event::signalled() const {
    return !wait_count;
 }
 
+cl_int
+event::status() const {
+   return _status;
+}
+
 void
 event::chain(event &ev) {
    if (wait_count) {
@@ -122,8 +127,8 @@ cl_int
 hard_event::status() const {
    pipe_screen *screen = queue()->device().pipe;
 
-   if (_status < 0)
-      return _status;
+   if (event::status() < 0)
+      return event::status();
 
    else if (!_fence)
       return CL_QUEUED;
@@ -213,8 +218,8 @@ soft_event::soft_event(clover::context &ctx, const ref_vector<event> &deps,
 
 cl_int
 soft_event::status() const {
-   if (_status < 0)
-      return _status;
+   if (event::status() < 0)
+      return event::status();
 
    else if (!signalled() ||
             any_of([](const event &ev) {
diff --git a/src/gallium/state_trackers/clover/core/event.hpp b/src/gallium/state_trackers/clover/core/event.hpp
index f638c5b..6469e48 100644
--- a/src/gallium/state_trackers/clover/core/event.hpp
+++ b/src/gallium/state_trackers/clover/core/event.hpp
@@ -66,7 +66,7 @@ namespace clover {
       void abort(cl_int status);
       bool signalled() const;
 
-      virtual cl_int status() const = 0;
+      virtual cl_int status() const;
       virtual command_queue *queue() const = 0;
       virtual cl_command_type command() const = 0;
       virtual void wait() const;
@@ -80,7 +80,6 @@ namespace clover {
    protected:
       void chain(event &ev);
 
-      cl_int _status;
       std::vector<intrusive_ref<event>> deps;
 
    private:
@@ -88,6 +87,7 @@ namespace clover {
       std::vector<intrusive_ref<event>> abort_self(cl_int status);
 
       unsigned wait_count;
+      cl_int _status;
       action action_ok;
       action action_fail;
       std::vector<intrusive_ref<event>> _chain;