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new method update() to generage MemoryChangedEvents.

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This commit is contained in:
Alain Magloire 2002-10-19 19:20:35 +00:00
parent 70ceb04d59
commit fe3137c647
1 changed files with 97 additions and 15 deletions
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112
debug/org.eclipse.cdt.debug.mi.core/src/org/eclipse/cdt/debug/mi/core/cdi/MemoryManager.java
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@ -16,6 +16,8 @@ import org.eclipse.cdt.debug.mi.core.MIFormat;
import org.eclipse.cdt.debug.mi.core.MISession;
import org.eclipse.cdt.debug.mi.core.command.CommandFactory;
import org.eclipse.cdt.debug.mi.core.command.MIDataReadMemory;
import org.eclipse.cdt.debug.mi.core.event.MIEvent;
import org.eclipse.cdt.debug.mi.core.event.MIMemoryChangedEvent;
import org.eclipse.cdt.debug.mi.core.output.MIDataReadMemoryInfo;
/**
@ -29,6 +31,95 @@ public class MemoryManager extends SessionObject implements ICDIMemoryManager {
blockList = new ArrayList();
}
/**
* This method will be call by the eventManager.processSuspended() every time the
* inferior comes to a Stop/Suspended. It will allow to look at the blocks that
* are registered and fired any event if changed.
* Note: Frozen blocks are not updated.
*/
public void update() {
MISession mi = getCSession().getMISession();
MemoryBlock[] blocks = listMemoryBlocks();
List eventList = new ArrayList(blocks.length);
for (int i = 0; i < blocks.length; i++) {
if (! blocks[i].isFrozen()) {
try {
MemoryBlock block = cloneBlock(blocks[i]);
Long[] array = compareBlocks(blocks[i], block);
if (array.length > 0) {
eventList.add(new MIMemoryChangedEvent(array));
}
// Update the block MIDataReadMemoryInfo.
blocks[i].setMIDataReadMemoryInfo(block.getMIDataReadMemoryInfo());
} catch (CDIException e) {
}
}
}
MIEvent[] events = (MIEvent[])eventList.toArray(new MIEvent[0]);
mi.fireEvents(events);
}
/**
* @return the registers MemoryBlock.
*/
MemoryBlock[] listMemoryBlocks() {
return (MemoryBlock[])blockList.toArray(new MemoryBlock[0]);
}
/**
* Compare two blocks and return an array of all _addresses_ that are different.
* This method is not smart it always assume that:
* oldBlock.getStartAddress() == newBlock.getStartAddress;
* oldBlock.getLength() == newBlock.getLength();
* @return Long[] array of modified addresses.
*/
Long[] compareBlocks (MemoryBlock oldBlock, MemoryBlock newBlock) throws CDIException {
if (oldBlock.getStartAddress() != newBlock.getStartAddress()) {
return new Long[0];
}
byte[] oldBytes = oldBlock.getBytes();
byte[] newBytes = newBlock.getBytes();
List aList = new ArrayList(oldBytes.length);
for (int i = 0; i < oldBytes.length; i++) {
if (i < newBytes.length) {
if (oldBytes[i] != newBytes[i]) {
aList.add(new Long(oldBlock.getStartAddress() + i));
}
}
}
return (Long[])aList.toArray(new Long[0]);
}
/**
* Use the same expression and length of the original block
* to create a new MemoryBlock. The new block is not register
* with the MemoryManager.
*/
MemoryBlock cloneBlock(MemoryBlock block) throws CDIException {
String exp = block.getExpression();
MIDataReadMemoryInfo info = createMIDataReadMemoryInfo(exp, (int)block.getLength());
return new MemoryBlock(getCSession().getCTarget(), exp, info);
}
/**
* Post a -data-read-memory to gdb/mi.
*/
MIDataReadMemoryInfo createMIDataReadMemoryInfo(String exp, int length) throws CDIException {
MISession mi = getCSession().getMISession();
CommandFactory factory = mi.getCommandFactory();
MIDataReadMemory mem = factory.createMIDataReadMemory(0, exp, MIFormat.HEXADECIMAL, 1, 1, length, null);
try {
mi.postCommand(mem);
MIDataReadMemoryInfo info = mem.getMIDataReadMemoryInfo();
if (info == null) {
throw new CDIException("No answer");
}
return info;
} catch (MIException e) {
throw new CDIException(e.getMessage());
}
}
/**
* @see org.eclipse.cdt.debug.core.cdi.ICDIMemoryManager#createMemoryBlock(long, int)
*/
@ -41,27 +132,18 @@ public class MemoryManager extends SessionObject implements ICDIMemoryManager {
/**
* @see org.eclipse.cdt.debug.core.cdi.ICDIMemoryManager#createMemoryBlock(string, int)
*/
public ICDIMemoryBlock createMemoryBlock(String address, int length)
throws CDIException {
MISession mi = getCSession().getMISession();
CommandFactory factory = mi.getCommandFactory();
MIDataReadMemory mem = factory.createMIDataReadMemory(0, address, MIFormat.HEXADECIMAL, 1, 1, length, null);
try {
mi.postCommand(mem);
MIDataReadMemoryInfo info = mem.getMIDataReadMemoryInfo();
MemoryBlock block = new MemoryBlock(getCSession().getCTarget(), info);
blockList.add(block);
return block;
} catch (MIException e) {
throw new CDIException(e.getMessage());
}
public ICDIMemoryBlock createMemoryBlock(String address, int length) throws CDIException {
MIDataReadMemoryInfo info = createMIDataReadMemoryInfo(address, length);
ICDIMemoryBlock block = new MemoryBlock(getCSession().getCTarget(), address, info);
blockList.add(block);
return block;
}
/**
* @see org.eclipse.cdt.debug.core.cdi.ICDIMemoryManager#getBlocks()
*/
public ICDIMemoryBlock[] getMemoryBlocks() throws CDIException {
return (ICDIMemoryBlock[])blockList.toArray(new ICDIMemoryBlock[0]);
return (ICDIMemoryBlock[])listMemoryBlocks();
}
/**