Rollback of r11015, r11014, r11011, r11010 in trunk branch.

src/gdb-jit.cc

Index: src/gdb-jit.cc
diff --git a/src/gdb-jit.cc b/src/gdb-jit.cc
index d3cd44707c59150aaf261e519abb792b43d64f54..4192222f90e426d99cb8524279613123eda5b90a 100644
--- a/src/gdb-jit.cc
+++ b/src/gdb-jit.cc
@@ -33,7 +33,6 @@
 #include "compiler.h"
 #include "global-handles.h"
 #include "messages.h"
-#include "platform.h"
 #include "natives.h"
 #include "scopeinfo.h"
 
@@ -2036,7 +2035,7 @@ static void AddUnwindInfo(CodeDescription* desc) {
 }
 
 
-static LazyMutex mutex = LAZY_MUTEX_INITIALIZER;
+Mutex* GDBJITInterface::mutex_ = OS::CreateMutex();
 
 
 void GDBJITInterface::AddCode(const char* name,
@@ -2046,7 +2045,7 @@ void GDBJITInterface::AddCode(const char* name,
                               CompilationInfo* info) {
   if (!FLAG_gdbjit) return;
 
-  ScopedLock lock(mutex.Pointer());
+  ScopedLock lock(mutex_);
   AssertNoAllocation no_gc;
 
   HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true);
@@ -2127,7 +2126,7 @@ void GDBJITInterface::AddCode(GDBJITInterface::CodeTag tag, Code* code) {
 void GDBJITInterface::RemoveCode(Code* code) {
   if (!FLAG_gdbjit) return;
 
-  ScopedLock lock(mutex.Pointer());
+  ScopedLock lock(mutex_);
   HashMap::Entry* e = GetEntries()->Lookup(code,
                                            HashForCodeObject(code),
                                            false);
@@ -2147,7 +2146,7 @@ void GDBJITInterface::RemoveCode(Code* code) {
 
 void GDBJITInterface::RegisterDetailedLineInfo(Code* code,
                                                GDBJITLineInfo* line_info) {
-  ScopedLock lock(mutex.Pointer());
+  ScopedLock lock(mutex_);
   ASSERT(!IsLineInfoTagged(line_info));
   HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true);
   ASSERT(e->value == NULL);