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Improve synchronization of debug library

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This commit is contained in:
James Roseborough
2015-03-18 15:52:49 +00:00
parent 237c384d55
commit 87f19030cb
1 changed files with 12 additions and 11 deletions
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21
src/core/org/luaj/vm2/lib/DebugLib.java
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@@ -490,11 +490,11 @@ public class DebugLib extends TwoArgFunction {
CallStack() {}
int currentline() {
synchronized int currentline() {
return calls > 0? frame[calls-1].currentline(): -1;
}
private CallFrame pushcall() {
private synchronized CallFrame pushcall() {
if (calls >= frame.length) {
int n = Math.max(4, frame.length * 3 / 2);
CallFrame[] f = new CallFrame[n];
@@ -508,20 +508,21 @@ public class DebugLib extends TwoArgFunction {
return frame[calls++];
}
final void onCall(LuaFunction function) {
final synchronized void onCall(LuaFunction function) {
pushcall().set(function);
}
final void onCall(LuaClosure function, Varargs varargs, LuaValue[] stack) {
final synchronized void onCall(LuaClosure function, Varargs varargs, LuaValue[] stack) {
pushcall().set(function, varargs, stack);
}
final void onReturn() {
final synchronized void onReturn() {
if (calls > 0)
frame[--calls].reset();
}
final void onInstruction(int pc, Varargs v, int top) {
final synchronized void onInstruction(int pc, Varargs v, int top) {
if (calls > 0)
frame[calls-1].instr(pc, v, top);
}
@@ -530,7 +531,7 @@ public class DebugLib extends TwoArgFunction {
* @param level
* @return String containing the traceback.
*/
String traceback(int level) {
synchronized String traceback(int level) {
StringBuffer sb = new StringBuffer();
sb.append( "stack traceback:" );
for (DebugLib.CallFrame c; (c = getCallFrame(level++)) != null; ) {
@@ -555,13 +556,13 @@ public class DebugLib extends TwoArgFunction {
return sb.toString();
}
DebugLib.CallFrame getCallFrame(int level) {
synchronized DebugLib.CallFrame getCallFrame(int level) {
if (level < 1 || level > calls)
return null;
return frame[calls-level];
}
DebugLib.CallFrame findCallFrame(LuaValue func) {
synchronized DebugLib.CallFrame findCallFrame(LuaValue func) {
for (int i = 1; i <= calls; ++i)
if (frame[calls-i].f == func)
return frame[i];
@@ -569,7 +570,7 @@ public class DebugLib extends TwoArgFunction {
}
DebugInfo auxgetinfo(String what, LuaFunction f, CallFrame ci) {
synchronized DebugInfo auxgetinfo(String what, LuaFunction f, CallFrame ci) {
DebugInfo ar = new DebugInfo();
for (int i = 0, n = what.length(); i < n; ++i) {
switch (what.charAt(i)) {