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* [SCM] master: Throw/catch UserExceptions, not RuntimeExceptions in unwinder.
@ 2008-06-20 19:23 cagney
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From: cagney @ 2008-06-20 19:23 UTC (permalink / raw)
To: frysk-cvs
The branch, master has been updated
via 75e76209d2bde38c31b45978fcda6aa863547aeb (commit)
from 50ae71ea90cbbb3d8822fa7929a08322247cd24c (commit)
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- Log -----------------------------------------------------------------
commit 75e76209d2bde38c31b45978fcda6aa863547aeb
Author: Andrew Cagney <cagney@redhat.com>
Date: Fri Jun 20 15:21:02 2008 -0400
Throw/catch UserExceptions, not RuntimeExceptions in unwinder.
This first gets the stack code catching just user (i.e., not bad frysk
code) exceptions; and secondly, for jni, gets it catching them
correctly.
frysk-core/frysk/proc/dead/ChangeLog
2008-06-20 Andrew Cagney <cagney@redhat.com>
* CorefileByteBuffer.java: Throw UserException, not
RuntimeException.
frysk-sys/lib/unwind/ChangeLog
2008-06-20 Andrew Cagney <cagney@redhat.com>
* jni/UnwindH.hxx (access_mem): Catch Throwable and then use
instanceof to identify a UserException.
* cni/UnwindH.hxx (access_mem): Ditto.
-----------------------------------------------------------------------
Summary of changes:
frysk-core/frysk/proc/dead/ChangeLog | 5 ++
frysk-core/frysk/proc/dead/CorefileByteBuffer.java | 46 ++++++++++---------
frysk-sys/lib/unwind/ChangeLog | 6 +++
frysk-sys/lib/unwind/cni/UnwindH.hxx | 15 ++++--
frysk-sys/lib/unwind/jni/UnwindH.hxx | 14 ++++--
5 files changed, 54 insertions(+), 32 deletions(-)
First 500 lines of diff:
diff --git a/frysk-core/frysk/proc/dead/ChangeLog b/frysk-core/frysk/proc/dead/ChangeLog
index 83851a5..d2b8beb 100644
--- a/frysk-core/frysk/proc/dead/ChangeLog
+++ b/frysk-core/frysk/proc/dead/ChangeLog
@@ -1,3 +1,8 @@
+2008-06-20 Andrew Cagney <cagney@redhat.com>
+
+ * CorefileByteBuffer.java: Throw UserException, not
+ RuntimeException.
+
2008-06-11 Andrew Cagney <cagney@redhat.com>
* TestLinuxCore.java: Update to match stack trace output.
diff --git a/frysk-core/frysk/proc/dead/CorefileByteBuffer.java b/frysk-core/frysk/proc/dead/CorefileByteBuffer.java
index 0abed3b..86274e6 100644
--- a/frysk-core/frysk/proc/dead/CorefileByteBuffer.java
+++ b/frysk-core/frysk/proc/dead/CorefileByteBuffer.java
@@ -39,6 +39,7 @@
package frysk.proc.dead;
+import frysk.UserException;
import frysk.sys.StatelessFile;
import java.io.File;
import java.util.ArrayList;
@@ -92,10 +93,9 @@ public class CorefileByteBuffer extends ByteBuffer {
closeCoreFileElf(elf);
}
- protected void poke(long arg0, int arg1)
- {
- throw new RuntimeException("Cannot poke into a corefile!");
- }
+ protected void poke(long arg0, int arg1) {
+ throw new UserException("Cannot poke into a corefile!");
+ }
protected int peek(long address)
{
@@ -120,20 +120,22 @@ public class CorefileByteBuffer extends ByteBuffer {
long offset = metaLine.solibOffset + (address - metaLine.vaddr);
temp.pread(offset, buffer,0,1);
} else {
- throw new RuntimeException("CorefileByteBuffer: Cannot peek() at address 0x"+
- Long.toHexString(address)+". Offset exists in file: " +
- metaLine.name+" but that file cannot be accessed.");
+ throw new UserException
+ ("CorefileByteBuffer: Cannot peek() at address 0x"
+ + Long.toHexString(address)+". Offset exists in file: "
+ + metaLine.name+" but that file cannot be accessed.");
}
}
}
- else
- throw new RuntimeException("CorefileByteBuffer: Cannot peek() " +
- "at address 0x" +
- Long.toHexString(address)+"." +
- " Address location is unknown " +
- " (not in corefile, executable or "+
- " mapped solibs).");
+ else {
+ throw new UserException("CorefileByteBuffer: Cannot peek() " +
+ "at address 0x" +
+ Long.toHexString(address)+"." +
+ " Address location is unknown " +
+ " (not in corefile, executable or "+
+ " mapped solibs).");
+ }
return buffer[0];
}
@@ -236,14 +238,14 @@ public class CorefileByteBuffer extends ByteBuffer {
//XXX: the boolean gate indicates offset not found.
if (!foundOffset)
- throw new RuntimeException("Cannot find file offset for given address 0x"
- + Long.toHexString(address));
+ throw new UserException("Cannot find file offset for given address 0x"
+ + Long.toHexString(address));
if (!presentInFile)
- throw new RuntimeException("Cannot read file offset for given address 0x"
- + Long.toHexString(address) +
- ". It is elided from the core file");
+ throw new UserException("Cannot read file offset for given address 0x"
+ + Long.toHexString(address) +
+ ". It is elided from the core file");
return offset;
}
@@ -295,9 +297,9 @@ public class CorefileByteBuffer extends ByteBuffer {
"",0x1000));
}
}
- }
- else
- throw new RuntimeException("Cannot IO access " + this.coreFile.getPath());
+ } else {
+ throw new UserException("Cannot IO access " + this.coreFile.getPath());
+ }
return (MapAddressHeader[]) localList.toArray(new MapAddressHeader[localList.size()]);
}
diff --git a/frysk-sys/lib/unwind/ChangeLog b/frysk-sys/lib/unwind/ChangeLog
index 39bcd79..5e72c59 100644
--- a/frysk-sys/lib/unwind/ChangeLog
+++ b/frysk-sys/lib/unwind/ChangeLog
@@ -1,3 +1,9 @@
+2008-06-20 Andrew Cagney <cagney@redhat.com>
+
+ * jni/UnwindH.hxx (access_mem): Catch Throwable and then use
+ instanceof to identify a UserException.
+ * cni/UnwindH.hxx (access_mem): Ditto.
+
2008-05-26 Andrew Cagney <cagney@redhat.com>
* jni/ElfImage.cxx: Delete.
diff --git a/frysk-sys/lib/unwind/cni/UnwindH.hxx b/frysk-sys/lib/unwind/cni/UnwindH.hxx
index 925b8af..1469bcd 100644
--- a/frysk-sys/lib/unwind/cni/UnwindH.hxx
+++ b/frysk-sys/lib/unwind/cni/UnwindH.hxx
@@ -62,6 +62,7 @@
#include <java/lang/ArrayIndexOutOfBoundsException.h>
#include "inua/eio/ByteBuffer.h"
+#include "frysk/UserException.h"
#include "frysk/rsl/Log.h"
#include "frysk/rsl/cni/Log.hxx"
#include "lib/dwfl/Dwfl.h"
@@ -149,11 +150,15 @@ access_mem(::unw_addr_space_t as, ::unw_word_t addr,
tmp, (jboolean) write);
memcpy(valp, elements(tmp), JvGetArrayLength(tmp));
return ret;
- } catch (RuntimeException *t) {
- // We have to catch all RuntimeExceptions here since there
- // is no indicator for just "invalid memory location".
- // Core files might have "holes" in their memory.
- return -UNW_EINVAL;
+ } catch (Throwable *t) {
+ if (frysk::UserException::class$.isInstance(t)) {
+ // We have to catch all RuntimeExceptions here since there
+ // is no indicator for just "invalid memory location".
+ // Core files might have "holes" in their memory.
+ return -UNW_EINVAL;
+ } else {
+ throw t;
+ }
}
}
diff --git a/frysk-sys/lib/unwind/jni/UnwindH.hxx b/frysk-sys/lib/unwind/jni/UnwindH.hxx
index 3f42723..76e57b7 100644
--- a/frysk-sys/lib/unwind/jni/UnwindH.hxx
+++ b/frysk-sys/lib/unwind/jni/UnwindH.hxx
@@ -147,11 +147,15 @@ access_mem(::unw_addr_space_t as, ::unw_word_t addr,
tmp.release();
jtmp.DeleteLocalRef(env);
return ret;
- } catch (RuntimeException *t) {
- // We have to catch all RuntimeExceptions here since there
- // is no indicator for just "invalid memory location".
- // Core files might have "holes" in their memory.
- return -UNW_EINVAL;
+ } catch (Throwable t) {
+ if (t.IsInstanceOf(env, frysk::UserException::_class_(env))) {
+ // We have to catch all RuntimeExceptions here since there is no
+ // indicator for just "invalid memory location". Core files
+ // might have "holes" in their memory.
+ return -UNW_EINVAL;
+ } else {
+ throw t;
+ }
}
}
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2008-06-20 19:23 [SCM] master: Throw/catch UserExceptions, not RuntimeExceptions in unwinder cagney
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