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Qt5: decrease memory amount needed for QtQWebkit

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On 64-bit platforms Qt's JavaScript engine tries to reserve 1GiB of
virtual memory via 'mmap()', to be backed by physical memory on demand.
Genode's 'mmap()' implementation currently does not support on-demand
allocation of physical memory and tries to allocate the whole amount at
once, which is usually far more than needed.

With this patch, the amount to be reserved gets decreased to 32MiB.

Fixes #1041.
This commit is contained in:
Christian Prochaska 2014-01-30 22:48:02 +01:00 committed by Christian Helmuth
parent 4b420f6e71
commit 7008013625
1 changed files with 22 additions and 1 deletions
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23
libports/src/lib/qt5/patches/qt5_qtwebkit.patch
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@ -5,6 +5,7 @@ From: Christian Prochaska <christian.prochaska@genode-labs.com>
---
.../Source/JavaScriptCore/dfg/DFGOperations.cpp | 1 +
.../JavaScriptCore/jit/ExecutableAllocator.h | 8 ++++++++
qtwebkit/Source/WTF/wtf/Assertions.h | 11 ++++++++++
qtwebkit/Source/WTF/wtf/FastMalloc.cpp | 2 +-
qtwebkit/Source/WTF/wtf/InlineASM.h | 4 ++--
@ -14,7 +15,7 @@ From: Christian Prochaska <christian.prochaska@genode-labs.com>
qtwebkit/Source/WTF/wtf/StackBounds.cpp | 12 +++++++++++
qtwebkit/Source/WTF/wtf/TCSystemAlloc.cpp | 21 ++++++++++++++++++++
.../platform/graphics/qt/MediaPlayerPrivateQt.cpp | 3 +++
10 files changed, 88 insertions(+), 6 deletions(-)
11 files changed, 96 insertions(+), 6 deletions(-)
diff --git a/qtwebkit/Source/JavaScriptCore/dfg/DFGOperations.cpp b/qtwebkit/Source/JavaScriptCore/dfg/DFGOperations.cpp
index bb9ccc3..077cbed 100644
@ -28,6 +29,26 @@ index bb9ccc3..077cbed 100644
".globl " SYMBOL_STRING(getHostCallReturnValue) "\n"
HIDE_SYMBOL(getHostCallReturnValue) "\n"
SYMBOL_STRING(getHostCallReturnValue) ":" "\n"
diff --git a/qtwebkit/Source/JavaScriptCore/jit/ExecutableAllocator.h b/qtwebkit/Source/JavaScriptCore/jit/ExecutableAllocator.h
index 85779e6..231ba3b 100644
--- a/qtwebkit/Source/JavaScriptCore/jit/ExecutableAllocator.h
+++ b/qtwebkit/Source/JavaScriptCore/jit/ExecutableAllocator.h
@@ -107,7 +107,15 @@ class DemandExecutableAllocator;
#if CPU(ARM)
static const size_t fixedExecutableMemoryPoolSize = 16 * 1024 * 1024;
#elif CPU(X86_64)
+#if OS(GENODE)
+/*
+ * Genode's 'mmap()' implementation currently does not support on-demand
+ * allocation of physical memory and tries to allocate the whole amount at once.
+ */
+static const size_t fixedExecutableMemoryPoolSize = 32 * 1024 * 1024;
+#else
static const size_t fixedExecutableMemoryPoolSize = 1024 * 1024 * 1024;
+#endif
#else
static const size_t fixedExecutableMemoryPoolSize = 32 * 1024 * 1024;
#endif
diff --git a/qtwebkit/Source/WTF/wtf/Assertions.h b/qtwebkit/Source/WTF/wtf/Assertions.h
index 7e079ab..cac10fc 100644
--- a/qtwebkit/Source/WTF/wtf/Assertions.h