infernap12/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2026-03-06 14:10:36 +00:00
Code Issues Packages Projects Releases Wiki Activity

8043508: JVM core dumps with very long text in tooltip

Browse Source 
Reviewed-by: bae, jgodinez
This commit is contained in:
Phil Race 2014-06-26 16:14:54 -07:00
parent 1573a33089
commit 462198fc26
2 changed files with 74 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
jdk/src/share/native/sun/font/DrawGlyphList.c
View File

@ -52,7 +52,8 @@
GlyphBlitVector* setupBlitVector(JNIEnv *env, jobject glyphlist) {
int g, bytesNeeded;
int g;
size_t bytesNeeded;
jlong *imagePtrs;
jfloat* positions = NULL;
GlyphInfo *ginfo;
@ -71,6 +72,9 @@ GlyphBlitVector* setupBlitVector(JNIEnv *env, jobject glyphlist) {
bytesNeeded = sizeof(GlyphBlitVector)+sizeof(ImageRef)*len;
gbv = (GlyphBlitVector*)malloc(bytesNeeded);
if (gbv == NULL) {
return NULL;
}
gbv->numGlyphs = len;
gbv->glyphs = (ImageRef*)((unsigned char*)gbv+sizeof(GlyphBlitVector));
@ -479,7 +483,8 @@ Java_sun_java2d_loops_DrawGlyphListLCD_DrawGlyphListLCD
*/
GlyphBlitVector* setupLCDBlitVector(JNIEnv *env, jobject glyphlist) {
int g, bytesNeeded;
int g;
size_t bytesNeeded;
jlong *imagePtrs;
jfloat* positions = NULL;
GlyphInfo *ginfo;
@ -500,6 +505,9 @@ GlyphBlitVector* setupLCDBlitVector(JNIEnv *env, jobject glyphlist) {
bytesNeeded = sizeof(GlyphBlitVector)+sizeof(ImageRef)*len;
gbv = (GlyphBlitVector*)malloc(bytesNeeded);
if (gbv == NULL) {
return NULL;
}
gbv->numGlyphs = len;
gbv->glyphs = (ImageRef*)((unsigned char*)gbv+sizeof(GlyphBlitVector));

64
jdk/test/java/awt/Graphics2D/DrawString/DrawStringCrash.java Normal file
View File

@ -0,0 +1,64 @@
/*
* Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8043508
* @summary Drawing a very long string crashes VM
*/
import java.awt.*;
import java.awt.image.*;
public class DrawStringCrash {
public static void main(String[] args) {
StringBuffer sb = new StringBuffer();
String s = "abcdefghijklmnopqrstuzwxyz";
for (int x = 0; x < 100000 ; x++) {
sb.append(s);
}
// Now have a string which uses approx 5Mb memory
// Loop again drawing doubling each time until
// we reach 8 billion chars or get OOME which means we can't
// go any further.
// Often there is no crash because Java OOM happens
// long before native heap runs out.
long maxLen = 8L * 1024 * 1024 * 1024;
int len = sb.length();
BufferedImage bi =
new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
Graphics2D g2d = bi.createGraphics();
while (len < maxLen) {
try {
g2d.drawString(s, 20, 20);
} catch (OutOfMemoryError e) {
return;
}
sb.append(sb);
len *= 2;
}
return;
}
}