[OE-core] [PATCH] recipes-qt: add fix for QWSLock on qt4e
Eric Nelson
eric.nelson at boundarydevices.com
Sat Aug 24 16:49:12 UTC 2013
This patch adds a patch for Qt-Embedded to only
destroy semaphores in the process which created
them.
Original patch by Neil Jerram for the OpenMoko project:
http://lists.openmoko.org/pipermail/community/2012-November/067806.html
See also Bug 31254:
https://bugreports.qt-project.org/browse/QTBUG-31254
Signed-off-by: Eric Nelson <eric.nelson at boundarydevices.com>
---
meta/recipes-qt/qt4/qt4-4.8.5.inc | 1 +
...-Only-destroy-semaphores-in-process-owner.patch | 77 ++++++++++++++++++++++
2 files changed, 78 insertions(+)
create mode 100644 meta/recipes-qt/qt4/qt4-4.8.5/0028-QWSLock-Only-destroy-semaphores-in-process-owner.patch
diff --git a/meta/recipes-qt/qt4/qt4-4.8.5.inc b/meta/recipes-qt/qt4/qt4-4.8.5.inc
index 95a14f3..be16bff 100644
--- a/meta/recipes-qt/qt4/qt4-4.8.5.inc
+++ b/meta/recipes-qt/qt4/qt4-4.8.5.inc
@@ -24,6 +24,7 @@ SRC_URI = "http://download.qt-project.org/official_releases/qt/4.8/${PV}/qt-ever
file://0022-Fix-drawing-of-0-width-polylines-from-outside-the-de.patch \
file://0023-QHttpMultiPart-fix-data-corruption-in-readData-metho.patch \
file://0027-tools.pro-disable-qmeegographicssystemhelper.patch \
+ file://0028-QWSLock-Only-destroy-semaphores-in-process-owner.patch \
file://g++.conf \
file://linux.conf \
"
diff --git a/meta/recipes-qt/qt4/qt4-4.8.5/0028-QWSLock-Only-destroy-semaphores-in-process-owner.patch b/meta/recipes-qt/qt4/qt4-4.8.5/0028-QWSLock-Only-destroy-semaphores-in-process-owner.patch
new file mode 100644
index 0000000..d67a746
--- /dev/null
+++ b/meta/recipes-qt/qt4/qt4-4.8.5/0028-QWSLock-Only-destroy-semaphores-in-process-owner.patch
@@ -0,0 +1,77 @@
+From 9af565935d16ecf8a8c04b5ea850ddb34a7c1294 Mon Sep 17 00:00:00 2001
+From: Eric Nelson <eric.nelson at boundarydevices.com>
+Date: Mon, 12 Aug 2013 11:54:05 -0700
+Subject: [PATCH] QWSLock: Only destroy semaphores in process owner
+
+This fixes the case when QT_POSIX_IPC is not defined.
+
+Original patch by Neil Jerram for the OpenMoko project:
+ http://lists.openmoko.org/pipermail/community/2012-November/067806.html
+
+See also Bug 31254:
+ https://bugreports.qt-project.org/browse/QTBUG-31254
+
+Signed-off-by: Eric Nelson <eric.nelson at boundarydevices.com>
+---
+ src/gui/embedded/qwslock.cpp | 13 +++++++++----
+ src/gui/embedded/qwslock_p.h | 2 +-
+ 2 files changed, 10 insertions(+), 5 deletions(-)
+
+diff --git a/src/gui/embedded/qwslock.cpp b/src/gui/embedded/qwslock.cpp
+index 3f8f306..cd6a48d 100644
+--- a/src/gui/embedded/qwslock.cpp
++++ b/src/gui/embedded/qwslock.cpp
+@@ -83,9 +83,12 @@ QWSLock::QWSLock(int id) : semId(id)
+ QWSSignalHandler::instance()->addWSLock(this);
+ #endif
+
++ owned = false;
++
+ #ifndef QT_POSIX_IPC
+ if (semId == -1) {
+ semId = semget(IPC_PRIVATE, 3, IPC_CREAT | 0666);
++ owned = true;
+ if (semId == -1) {
+ perror("QWSLock::QWSLock");
+ qFatal("Unable to create semaphore");
+@@ -100,7 +103,6 @@ QWSLock::QWSLock(int id) : semId(id)
+ }
+ #else
+ sems[0] = sems[1] = sems[2] = SEM_FAILED;
+- owned = false;
+
+ if (semId == -1) {
+ // ### generate really unique IDs
+@@ -134,9 +136,12 @@ QWSLock::~QWSLock()
+
+ if (semId != -1) {
+ #ifndef QT_POSIX_IPC
+- qt_semun semval;
+- semval.val = 0;
+- semctl(semId, 0, IPC_RMID, semval);
++
++ if (owned) {
++ qt_semun semval;
++ semval.val = 0;
++ semctl(semId, 0, IPC_RMID, semval);
++ }
+ semId = -1;
+ #else
+ // emulate the SEM_UNDO behavior for the BackingStore lock
+diff --git a/src/gui/embedded/qwslock_p.h b/src/gui/embedded/qwslock_p.h
+index ead7b89..d16b3d5 100644
+--- a/src/gui/embedded/qwslock_p.h
++++ b/src/gui/embedded/qwslock_p.h
+@@ -86,8 +86,8 @@ private:
+ int lockCount[2];
+ #ifdef QT_POSIX_IPC
+ sem_t *sems[3];
+- bool owned;
+ #endif
++ bool owned;
+ };
+
+ QT_END_NAMESPACE
+--
+1.8.1.2
+
--
1.8.1.2
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