Add an SB API SBFrame::WatchValue() and exported to the Python interface to
set a watchpoint Pythonically. If the find-and-watch-a-variable operation
fails, an invalid SBValue is returned, instead.
Example Python usage:
value = frame0.WatchValue('global',
lldb.eValueTypeVariableGlobal,
lldb.LLDB_WATCH_TYPE_READ|lldb.LLDB_WATCH_TYPE_WRITE)
Add TestSetWatchpoint.py to exercise this API.
We have 400 test cases now.
git-svn-id: https://llvm.org/svn/llvm-project/llvdb/trunk@140436 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/source/API/SBFrame.cpp b/source/API/SBFrame.cpp
index f72f8bf..c4fc392 100644
--- a/source/API/SBFrame.cpp
+++ b/source/API/SBFrame.cpp
@@ -14,6 +14,7 @@
#include "lldb/lldb-types.h"
+#include "lldb/Breakpoint/WatchpointLocation.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/ConstString.h"
#include "lldb/Core/Log.h"
@@ -405,6 +406,48 @@
return value;
}
+/// Find and watch a variable using the frame as the scope.
+/// You can use LLDB_WATCH_TYPE_READ | LLDB_WATCH_TYPE_WRITE for 'rw' watch.
+SBValue
+SBFrame::WatchValue (const char *name, ValueType value_type, uint32_t watch_type)
+{
+ SBValue sb_value_empty;
+
+ if (!IsValid())
+ return sb_value_empty;
+
+ // Acquire the API locker, to be released at the end of the method call.
+ Mutex::Locker api_locker (m_opaque_sp->GetThread().GetProcess().GetTarget().GetAPIMutex());
+
+ switch (value_type) {
+ case eValueTypeVariableGlobal: // global variable
+ case eValueTypeVariableStatic: // static variable
+ case eValueTypeVariableArgument: // function argument variables
+ case eValueTypeVariableLocal: // function local variables
+ break;
+ default:
+ return sb_value_empty; // these are not eligible for watching
+ }
+
+ SBValue sb_value = FindValue(name, value_type);
+ // If the SBValue is not valid, there's no point in even trying to watch it.
+ if (!sb_value.IsValid())
+ return sb_value;
+
+ addr_t addr = sb_value.GetLoadAddress();
+ size_t size = sb_value.GetByteSize();
+
+ WatchpointLocationSP wp_loc_sp = m_opaque_sp->GetThread().GetProcess().GetTarget().
+ CreateWatchpointLocation(addr, size, watch_type);
+
+ LogSP log(GetLogIfAllCategoriesSet (LIBLLDB_LOG_API));
+ if (log)
+ log->Printf ("SBFrame(%p)::WatchValue (name=\"%s\", value_type=%i, watch_type=%i) => SBValue(%p) & wp_loc(%p)",
+ m_opaque_sp.get(), name, value_type, watch_type, sb_value.get(), wp_loc_sp.get());
+
+ return wp_loc_sp ? sb_value : sb_value_empty;
+}
+
SBValue
SBFrame::FindValue (const char *name, ValueType value_type, lldb::DynamicValueType use_dynamic)
{