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[packages/trusty/cirros-testvm.git] / cirros-testvm / src-cirros / buildroot-2015.05 / package / qt / 0004-pthread_getattr_np.patch

diff --git a/cirros-testvm/src-cirros/buildroot-2015.05/package/qt/0004-pthread_getattr_np.patch b/cirros-testvm/src-cirros/buildroot-2015.05/package/qt/0004-pthread_getattr_np.patch
new file mode 100644 (file)
index 0000000..28f0c84
--- /dev/null
+++ b/cirros-testvm/src-cirros/buildroot-2015.05/package/qt/0004-pthread_getattr_np.patch
@@ -0,0 +1,107 @@
+Add pthred_getattr_np / phread_attr_getstrack alternatives for uClibc
+
+Based on https://dev.openwrt.org/log/packages/Xorg/lib/qt4/patches/100-fix-webkit-for-uclibc.patch?rev=20371
+
+Signed-off-by: Johan Sagaert <sagaert.johan@skynet.be>
+---
+ src/3rdparty/javascriptcore/JavaScriptCore/runtime/Collector.cpp |   61 ++++++++++
+ 1 file changed, 61 insertions(+)
+
+Index: qt-everywhere-opensource-src-4.8.1/src/3rdparty/javascriptcore/JavaScriptCore/runtime/Collector.cpp
+===================================================================
+--- qt-everywhere-opensource-src-4.8.1.orig/src/3rdparty/javascriptcore/JavaScriptCore/runtime/Collector.cpp
++++ qt-everywhere-opensource-src-4.8.1/src/3rdparty/javascriptcore/JavaScriptCore/runtime/Collector.cpp
+@@ -70,6 +70,23 @@
+ #endif
+ #include <unistd.h>
+ 
++#if defined(QT_LINUXBASE)
++#include <dlfcn.h>
++#endif
++
++#if defined(__UCLIBC__)
++// versions of uClibc 0.9.32 and below with linuxthreads.old do not have
++// pthread_getattr_np or pthread_attr_getstack.
++#if __UCLIBC_MAJOR__ == 0 && \
++    (__UCLIBC_MINOR__ < 9 || \
++    (__UCLIBC_MINOR__ == 9 && __UCLIBC_SUBLEVEL__ <= 32)) && \
++    defined(__LINUXTHREADS_OLD__)
++#define UCLIBC_USE_PROC_SELF_MAPS 1
++#include <stdio_ext.h>
++extern int *__libc_stack_end;
++#endif
++#endif
++
+ #if OS(SOLARIS)
+ #include <thread.h>
+ #else
+@@ -648,6 +665,37 @@
+     get_thread_info(find_thread(NULL), &threadInfo);
+     return threadInfo.stack_end;
+ #elif OS(UNIX)
++#ifdef UCLIBC_USE_PROC_SELF_MAPS
++    // Read /proc/self/maps and locate the line whose address
++    // range contains __libc_stack_end.
++    FILE *file = fopen("/proc/self/maps", "r");
++    if (!file)
++        return 0;
++    __fsetlocking(file, FSETLOCKING_BYCALLER);
++    char *line = NULL;
++    size_t lineLen = 0;
++    while (!feof_unlocked(file)) {
++        if (getdelim(&line, &lineLen, '\n', file) <= 0)
++            break;
++
++        long from;
++        long to;
++        if (sscanf (line, "%lx-%lx", &from, &to) != 2)
++            continue;
++        if (from <= (long)__libc_stack_end && (long)__libc_stack_end < to) {
++            fclose(file);
++            free(line);
++#ifdef _STACK_GROWS_UP
++            return (void *)from;
++#else
++            return (void *)to;
++#endif
++        }
++    }
++    fclose(file);
++    free(line);
++    return 0;
++#else
+     AtomicallyInitializedStatic(Mutex&, mutex = *new Mutex);
+     MutexLocker locker(mutex);
+     static void* stackBase = 0;
+@@ -655,11 +703,23 @@
+     static pthread_t stackThread;
+     pthread_t thread = pthread_self();
+     if (stackBase == 0 || thread != stackThread) {
++
++#if defined(QT_LINUXBASE)
++        // LinuxBase is missing pthread_getattr_np - resolve it once at runtime instead
++        // see http://bugs.linuxbase.org/show_bug.cgi?id=2364
++        typedef int (*GetAttrPtr)(pthread_t, pthread_attr_t *);
++        static int (*pthread_getattr_np_ptr)(pthread_t, pthread_attr_t *) = 0;
++        if (!pthread_getattr_np_ptr)
++            *(void **)&pthread_getattr_np_ptr = dlsym(RTLD_DEFAULT, "pthread_getattr_np");
++#endif
+         pthread_attr_t sattr;
+         pthread_attr_init(&sattr);
+ #if HAVE(PTHREAD_NP_H) || OS(NETBSD)
+         // e.g. on FreeBSD 5.4, neundorf@kde.org
+         pthread_attr_get_np(thread, &sattr);
++#elif defined(QT_LINUXBASE)
++        if (pthread_getattr_np_ptr)
++            pthread_getattr_np_ptr(thread, &sattr);
+ #else
+         // FIXME: this function is non-portable; other POSIX systems may have different np alternatives
+         pthread_getattr_np(thread, &sattr);
+@@ -671,6 +731,7 @@
+         stackThread = thread;
+     }
+     return static_cast<char*>(stackBase) + stackSize;
++#endif
+ #else
+ #error Need a way to get the stack base on this platform
+ #endif